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From l..@apache.org
Subject svn commit: r959802 [5/10] - in /websites/production/commons/content/proper/commons-math/xref/org/apache/commons/math3: fraction/ geometry/euclidean/threed/ geometry/euclidean/twod/ ml/neuralnet/ ml/neuralnet/sofm/ ode/ ode/events/ special/ stat/infere...
Date Mon, 27 Jul 2015 19:40:45 GMT
Modified: websites/production/commons/content/proper/commons-math/xref/org/apache/commons/math3/ml/neuralnet/Neuron.html
==============================================================================
--- websites/production/commons/content/proper/commons-math/xref/org/apache/commons/math3/ml/neuralnet/Neuron.html (original)
+++ websites/production/commons/content/proper/commons-math/xref/org/apache/commons/math3/ml/neuralnet/Neuron.html Mon Jul 27 19:40:45 2015
@@ -28,199 +28,237 @@
 <a class="jxr_linenumber" name="L20" href="#L20">20</a>  <strong class="jxr_keyword">import</strong> java.io.Serializable;
 <a class="jxr_linenumber" name="L21" href="#L21">21</a>  <strong class="jxr_keyword">import</strong> java.io.ObjectInputStream;
 <a class="jxr_linenumber" name="L22" href="#L22">22</a>  <strong class="jxr_keyword">import</strong> java.util.concurrent.atomic.AtomicReference;
-<a class="jxr_linenumber" name="L23" href="#L23">23</a>  <strong class="jxr_keyword">import</strong> org.apache.commons.math3.util.Precision;
-<a class="jxr_linenumber" name="L24" href="#L24">24</a>  <strong class="jxr_keyword">import</strong> org.apache.commons.math3.exception.DimensionMismatchException;
-<a class="jxr_linenumber" name="L25" href="#L25">25</a>  
-<a class="jxr_linenumber" name="L26" href="#L26">26</a>  
-<a class="jxr_linenumber" name="L27" href="#L27">27</a>  <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L28" href="#L28">28</a>  <em class="jxr_javadoccomment"> * Describes a neuron element of a neural network.</em>
-<a class="jxr_linenumber" name="L29" href="#L29">29</a>  <em class="jxr_javadoccomment"> *</em>
-<a class="jxr_linenumber" name="L30" href="#L30">30</a>  <em class="jxr_javadoccomment"> * This class aims to be thread-safe.</em>
+<a class="jxr_linenumber" name="L23" href="#L23">23</a>  <strong class="jxr_keyword">import</strong> java.util.concurrent.atomic.AtomicLong;
+<a class="jxr_linenumber" name="L24" href="#L24">24</a>  
+<a class="jxr_linenumber" name="L25" href="#L25">25</a>  <strong class="jxr_keyword">import</strong> org.apache.commons.math3.exception.DimensionMismatchException;
+<a class="jxr_linenumber" name="L26" href="#L26">26</a>  <strong class="jxr_keyword">import</strong> org.apache.commons.math3.util.Precision;
+<a class="jxr_linenumber" name="L27" href="#L27">27</a>  
+<a class="jxr_linenumber" name="L28" href="#L28">28</a>  
+<a class="jxr_linenumber" name="L29" href="#L29">29</a>  <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L30" href="#L30">30</a>  <em class="jxr_javadoccomment"> * Describes a neuron element of a neural network.</em>
 <a class="jxr_linenumber" name="L31" href="#L31">31</a>  <em class="jxr_javadoccomment"> *</em>
-<a class="jxr_linenumber" name="L32" href="#L32">32</a>  <em class="jxr_javadoccomment"> * @since 3.3</em>
-<a class="jxr_linenumber" name="L33" href="#L33">33</a>  <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="L34" href="#L34">34</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/apache/commons/math3/ml/neuralnet/Neuron.html">Neuron</a> <strong class="jxr_keyword">implements</strong> Serializable {
-<a class="jxr_linenumber" name="L35" href="#L35">35</a>      <em class="jxr_javadoccomment">/** Serializable. */</em>
-<a class="jxr_linenumber" name="L36" href="#L36">36</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> serialVersionUID = 20130207L;
-<a class="jxr_linenumber" name="L37" href="#L37">37</a>      <em class="jxr_javadoccomment">/** Identifier. */</em>
-<a class="jxr_linenumber" name="L38" href="#L38">38</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> identifier;
-<a class="jxr_linenumber" name="L39" href="#L39">39</a>      <em class="jxr_javadoccomment">/** Length of the feature set. */</em>
-<a class="jxr_linenumber" name="L40" href="#L40">40</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> size;
-<a class="jxr_linenumber" name="L41" href="#L41">41</a>      <em class="jxr_javadoccomment">/** Neuron data. */</em>
-<a class="jxr_linenumber" name="L42" href="#L42">42</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> AtomicReference&lt;<strong class="jxr_keyword">double</strong>[]&gt; features;
-<a class="jxr_linenumber" name="L43" href="#L43">43</a>  
-<a class="jxr_linenumber" name="L44" href="#L44">44</a>      <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L45" href="#L45">45</a>  <em class="jxr_javadoccomment">     * Creates a neuron.</em>
-<a class="jxr_linenumber" name="L46" href="#L46">46</a>  <em class="jxr_javadoccomment">     * The size of the feature set is fixed to the length of the given</em>
-<a class="jxr_linenumber" name="L47" href="#L47">47</a>  <em class="jxr_javadoccomment">     * argument.</em>
-<a class="jxr_linenumber" name="L48" href="#L48">48</a>  <em class="jxr_javadoccomment">     * &lt;br/&gt;</em>
-<a class="jxr_linenumber" name="L49" href="#L49">49</a>  <em class="jxr_javadoccomment">     * Constructor is package-private: Neurons must be</em>
-<a class="jxr_linenumber" name="L50" href="#L50">50</a>  <em class="jxr_javadoccomment">     * {@link Network#createNeuron(double[]) created} by the network</em>
-<a class="jxr_linenumber" name="L51" href="#L51">51</a>  <em class="jxr_javadoccomment">     * instance to which they will belong.</em>
-<a class="jxr_linenumber" name="L52" href="#L52">52</a>  <em class="jxr_javadoccomment">     *</em>
-<a class="jxr_linenumber" name="L53" href="#L53">53</a>  <em class="jxr_javadoccomment">     * @param identifier Identifier (assigned by the {@link Network}).</em>
-<a class="jxr_linenumber" name="L54" href="#L54">54</a>  <em class="jxr_javadoccomment">     * @param features Initial values of the feature set.</em>
-<a class="jxr_linenumber" name="L55" href="#L55">55</a>  <em class="jxr_javadoccomment">     */</em>
-<a class="jxr_linenumber" name="L56" href="#L56">56</a>      <a href="../../../../../../org/apache/commons/math3/ml/neuralnet/Neuron.html">Neuron</a>(<strong class="jxr_keyword">long</strong> identifier,
-<a class="jxr_linenumber" name="L57" href="#L57">57</a>             <strong class="jxr_keyword">double</strong>[] features) {
-<a class="jxr_linenumber" name="L58" href="#L58">58</a>          <strong class="jxr_keyword">this</strong>.identifier = identifier;
-<a class="jxr_linenumber" name="L59" href="#L59">59</a>          <strong class="jxr_keyword">this</strong>.size = features.length;
-<a class="jxr_linenumber" name="L60" href="#L60">60</a>          <strong class="jxr_keyword">this</strong>.features = <strong class="jxr_keyword">new</strong> AtomicReference&lt;<strong class="jxr_keyword">double</strong>[]&gt;(features.clone());
-<a class="jxr_linenumber" name="L61" href="#L61">61</a>      }
-<a class="jxr_linenumber" name="L62" href="#L62">62</a>  
-<a class="jxr_linenumber" name="L63" href="#L63">63</a>      <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L64" href="#L64">64</a>  <em class="jxr_javadoccomment">     * Gets the neuron's identifier.</em>
-<a class="jxr_linenumber" name="L65" href="#L65">65</a>  <em class="jxr_javadoccomment">     *</em>
-<a class="jxr_linenumber" name="L66" href="#L66">66</a>  <em class="jxr_javadoccomment">     * @return the identifier.</em>
-<a class="jxr_linenumber" name="L67" href="#L67">67</a>  <em class="jxr_javadoccomment">     */</em>
-<a class="jxr_linenumber" name="L68" href="#L68">68</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> getIdentifier() {
-<a class="jxr_linenumber" name="L69" href="#L69">69</a>          <strong class="jxr_keyword">return</strong> identifier;
-<a class="jxr_linenumber" name="L70" href="#L70">70</a>      }
-<a class="jxr_linenumber" name="L71" href="#L71">71</a>  
-<a class="jxr_linenumber" name="L72" href="#L72">72</a>      <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L73" href="#L73">73</a>  <em class="jxr_javadoccomment">     * Gets the length of the feature set.</em>
-<a class="jxr_linenumber" name="L74" href="#L74">74</a>  <em class="jxr_javadoccomment">     *</em>
-<a class="jxr_linenumber" name="L75" href="#L75">75</a>  <em class="jxr_javadoccomment">     * @return the number of features.</em>
-<a class="jxr_linenumber" name="L76" href="#L76">76</a>  <em class="jxr_javadoccomment">     */</em>
-<a class="jxr_linenumber" name="L77" href="#L77">77</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> getSize() {
-<a class="jxr_linenumber" name="L78" href="#L78">78</a>          <strong class="jxr_keyword">return</strong> size;
-<a class="jxr_linenumber" name="L79" href="#L79">79</a>      }
-<a class="jxr_linenumber" name="L80" href="#L80">80</a>  
-<a class="jxr_linenumber" name="L81" href="#L81">81</a>      <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L82" href="#L82">82</a>  <em class="jxr_javadoccomment">     * Gets the neuron's features.</em>
-<a class="jxr_linenumber" name="L83" href="#L83">83</a>  <em class="jxr_javadoccomment">     *</em>
-<a class="jxr_linenumber" name="L84" href="#L84">84</a>  <em class="jxr_javadoccomment">     * @return a copy of the neuron's features.</em>
-<a class="jxr_linenumber" name="L85" href="#L85">85</a>  <em class="jxr_javadoccomment">     */</em>
-<a class="jxr_linenumber" name="L86" href="#L86">86</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">double</strong>[] getFeatures() {
-<a class="jxr_linenumber" name="L87" href="#L87">87</a>          <strong class="jxr_keyword">return</strong> features.get().clone();
-<a class="jxr_linenumber" name="L88" href="#L88">88</a>      }
-<a class="jxr_linenumber" name="L89" href="#L89">89</a>  
-<a class="jxr_linenumber" name="L90" href="#L90">90</a>      <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L91" href="#L91">91</a>  <em class="jxr_javadoccomment">     * Tries to atomically update the neuron's features.</em>
-<a class="jxr_linenumber" name="L92" href="#L92">92</a>  <em class="jxr_javadoccomment">     * Update will be performed only if the expected values match the</em>
-<a class="jxr_linenumber" name="L93" href="#L93">93</a>  <em class="jxr_javadoccomment">     * current values.&lt;br/&gt;</em>
-<a class="jxr_linenumber" name="L94" href="#L94">94</a>  <em class="jxr_javadoccomment">     * In effect, when concurrent threads call this method, the state</em>
-<a class="jxr_linenumber" name="L95" href="#L95">95</a>  <em class="jxr_javadoccomment">     * could be modified by one, so that it does not correspond to the</em>
-<a class="jxr_linenumber" name="L96" href="#L96">96</a>  <em class="jxr_javadoccomment">     * the state assumed by another.</em>
-<a class="jxr_linenumber" name="L97" href="#L97">97</a>  <em class="jxr_javadoccomment">     * Typically, a caller {@link #getFeatures() retrieves the current state},</em>
-<a class="jxr_linenumber" name="L98" href="#L98">98</a>  <em class="jxr_javadoccomment">     * and uses it to compute the new state.</em>
-<a class="jxr_linenumber" name="L99" href="#L99">99</a>  <em class="jxr_javadoccomment">     * During this computation, another thread might have done the same</em>
-<a class="jxr_linenumber" name="L100" href="#L100">100</a> <em class="jxr_javadoccomment">     * thing, and updated the state: If the current thread were to proceed</em>
-<a class="jxr_linenumber" name="L101" href="#L101">101</a> <em class="jxr_javadoccomment">     * with its own update, it would overwrite the new state (which might</em>
-<a class="jxr_linenumber" name="L102" href="#L102">102</a> <em class="jxr_javadoccomment">     * already have been used by yet other threads).</em>
-<a class="jxr_linenumber" name="L103" href="#L103">103</a> <em class="jxr_javadoccomment">     * To prevent this, the method does not perform the update when a</em>
-<a class="jxr_linenumber" name="L104" href="#L104">104</a> <em class="jxr_javadoccomment">     * concurrent modification has been detected, and returns {@code false}.</em>
-<a class="jxr_linenumber" name="L105" href="#L105">105</a> <em class="jxr_javadoccomment">     * When this happens, the caller should fetch the new current state,</em>
-<a class="jxr_linenumber" name="L106" href="#L106">106</a> <em class="jxr_javadoccomment">     * redo its computation, and call this method again.</em>
-<a class="jxr_linenumber" name="L107" href="#L107">107</a> <em class="jxr_javadoccomment">     *</em>
-<a class="jxr_linenumber" name="L108" href="#L108">108</a> <em class="jxr_javadoccomment">     * @param expect Current values of the features, as assumed by the caller.</em>
-<a class="jxr_linenumber" name="L109" href="#L109">109</a> <em class="jxr_javadoccomment">     * Update will never succeed if the contents of this array does not match</em>
-<a class="jxr_linenumber" name="L110" href="#L110">110</a> <em class="jxr_javadoccomment">     * the values returned by {@link #getFeatures()}.</em>
-<a class="jxr_linenumber" name="L111" href="#L111">111</a> <em class="jxr_javadoccomment">     * @param update Features's new values.</em>
-<a class="jxr_linenumber" name="L112" href="#L112">112</a> <em class="jxr_javadoccomment">     * @return {@code true} if the update was successful, {@code false}</em>
-<a class="jxr_linenumber" name="L113" href="#L113">113</a> <em class="jxr_javadoccomment">     * otherwise.</em>
-<a class="jxr_linenumber" name="L114" href="#L114">114</a> <em class="jxr_javadoccomment">     * @throws DimensionMismatchException if the length of {@code update} is</em>
-<a class="jxr_linenumber" name="L115" href="#L115">115</a> <em class="jxr_javadoccomment">     * not the same as specified in the {@link #Neuron(long,double[])</em>
-<a class="jxr_linenumber" name="L116" href="#L116">116</a> <em class="jxr_javadoccomment">     * constructor}.</em>
-<a class="jxr_linenumber" name="L117" href="#L117">117</a> <em class="jxr_javadoccomment">     */</em>
-<a class="jxr_linenumber" name="L118" href="#L118">118</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> compareAndSetFeatures(<strong class="jxr_keyword">double</strong>[] expect,
-<a class="jxr_linenumber" name="L119" href="#L119">119</a>                                          <strong class="jxr_keyword">double</strong>[] update) {
-<a class="jxr_linenumber" name="L120" href="#L120">120</a>         <strong class="jxr_keyword">if</strong> (update.length != size) {
-<a class="jxr_linenumber" name="L121" href="#L121">121</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/commons/math3/exception/DimensionMismatchException.html">DimensionMismatchException</a>(update.length, size);
-<a class="jxr_linenumber" name="L122" href="#L122">122</a>         }
-<a class="jxr_linenumber" name="L123" href="#L123">123</a> 
-<a class="jxr_linenumber" name="L124" href="#L124">124</a>         <em class="jxr_comment">// Get the internal reference. Note that this must not be a copy;</em>
-<a class="jxr_linenumber" name="L125" href="#L125">125</a>         <em class="jxr_comment">// otherwise the "compareAndSet" below will always fail.</em>
-<a class="jxr_linenumber" name="L126" href="#L126">126</a>         <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong>[] current = features.get();
-<a class="jxr_linenumber" name="L127" href="#L127">127</a>         <strong class="jxr_keyword">if</strong> (!containSameValues(current, expect)) {
-<a class="jxr_linenumber" name="L128" href="#L128">128</a>             <em class="jxr_comment">// Some other thread already modified the state.</em>
-<a class="jxr_linenumber" name="L129" href="#L129">129</a>             <strong class="jxr_keyword">return</strong> false;
-<a class="jxr_linenumber" name="L130" href="#L130">130</a>         }
-<a class="jxr_linenumber" name="L131" href="#L131">131</a> 
-<a class="jxr_linenumber" name="L132" href="#L132">132</a>         <strong class="jxr_keyword">if</strong> (features.compareAndSet(current, update.clone())) {
-<a class="jxr_linenumber" name="L133" href="#L133">133</a>             <em class="jxr_comment">// The current thread could atomically update the state.</em>
-<a class="jxr_linenumber" name="L134" href="#L134">134</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
-<a class="jxr_linenumber" name="L135" href="#L135">135</a>         } <strong class="jxr_keyword">else</strong> {
-<a class="jxr_linenumber" name="L136" href="#L136">136</a>             <em class="jxr_comment">// Some other thread came first.</em>
-<a class="jxr_linenumber" name="L137" href="#L137">137</a>             <strong class="jxr_keyword">return</strong> false;
-<a class="jxr_linenumber" name="L138" href="#L138">138</a>         }
-<a class="jxr_linenumber" name="L139" href="#L139">139</a>     }
+<a class="jxr_linenumber" name="L32" href="#L32">32</a>  <em class="jxr_javadoccomment"> * This class aims to be thread-safe.</em>
+<a class="jxr_linenumber" name="L33" href="#L33">33</a>  <em class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="L34" href="#L34">34</a>  <em class="jxr_javadoccomment"> * @since 3.3</em>
+<a class="jxr_linenumber" name="L35" href="#L35">35</a>  <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L36" href="#L36">36</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/apache/commons/math3/ml/neuralnet/Neuron.html">Neuron</a> <strong class="jxr_keyword">implements</strong> Serializable {
+<a class="jxr_linenumber" name="L37" href="#L37">37</a>      <em class="jxr_javadoccomment">/** Serializable. */</em>
+<a class="jxr_linenumber" name="L38" href="#L38">38</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> serialVersionUID = 20130207L;
+<a class="jxr_linenumber" name="L39" href="#L39">39</a>      <em class="jxr_javadoccomment">/** Identifier. */</em>
+<a class="jxr_linenumber" name="L40" href="#L40">40</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> identifier;
+<a class="jxr_linenumber" name="L41" href="#L41">41</a>      <em class="jxr_javadoccomment">/** Length of the feature set. */</em>
+<a class="jxr_linenumber" name="L42" href="#L42">42</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> size;
+<a class="jxr_linenumber" name="L43" href="#L43">43</a>      <em class="jxr_javadoccomment">/** Neuron data. */</em>
+<a class="jxr_linenumber" name="L44" href="#L44">44</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> AtomicReference&lt;<strong class="jxr_keyword">double</strong>[]&gt; features;
+<a class="jxr_linenumber" name="L45" href="#L45">45</a>      <em class="jxr_javadoccomment">/** Number of attempts to update a neuron. */</em>
+<a class="jxr_linenumber" name="L46" href="#L46">46</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> AtomicLong numberOfAttemptedUpdates = <strong class="jxr_keyword">new</strong> AtomicLong(0);
+<a class="jxr_linenumber" name="L47" href="#L47">47</a>      <em class="jxr_javadoccomment">/** Number of successful updates  of a neuron. */</em>
+<a class="jxr_linenumber" name="L48" href="#L48">48</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> AtomicLong numberOfSuccessfulUpdates = <strong class="jxr_keyword">new</strong> AtomicLong(0);
+<a class="jxr_linenumber" name="L49" href="#L49">49</a>  
+<a class="jxr_linenumber" name="L50" href="#L50">50</a>      <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L51" href="#L51">51</a>  <em class="jxr_javadoccomment">     * Creates a neuron.</em>
+<a class="jxr_linenumber" name="L52" href="#L52">52</a>  <em class="jxr_javadoccomment">     * The size of the feature set is fixed to the length of the given</em>
+<a class="jxr_linenumber" name="L53" href="#L53">53</a>  <em class="jxr_javadoccomment">     * argument.</em>
+<a class="jxr_linenumber" name="L54" href="#L54">54</a>  <em class="jxr_javadoccomment">     * &lt;br/&gt;</em>
+<a class="jxr_linenumber" name="L55" href="#L55">55</a>  <em class="jxr_javadoccomment">     * Constructor is package-private: Neurons must be</em>
+<a class="jxr_linenumber" name="L56" href="#L56">56</a>  <em class="jxr_javadoccomment">     * {@link Network#createNeuron(double[]) created} by the network</em>
+<a class="jxr_linenumber" name="L57" href="#L57">57</a>  <em class="jxr_javadoccomment">     * instance to which they will belong.</em>
+<a class="jxr_linenumber" name="L58" href="#L58">58</a>  <em class="jxr_javadoccomment">     *</em>
+<a class="jxr_linenumber" name="L59" href="#L59">59</a>  <em class="jxr_javadoccomment">     * @param identifier Identifier (assigned by the {@link Network}).</em>
+<a class="jxr_linenumber" name="L60" href="#L60">60</a>  <em class="jxr_javadoccomment">     * @param features Initial values of the feature set.</em>
+<a class="jxr_linenumber" name="L61" href="#L61">61</a>  <em class="jxr_javadoccomment">     */</em>
+<a class="jxr_linenumber" name="L62" href="#L62">62</a>      <a href="../../../../../../org/apache/commons/math3/ml/neuralnet/Neuron.html">Neuron</a>(<strong class="jxr_keyword">long</strong> identifier,
+<a class="jxr_linenumber" name="L63" href="#L63">63</a>             <strong class="jxr_keyword">double</strong>[] features) {
+<a class="jxr_linenumber" name="L64" href="#L64">64</a>          <strong class="jxr_keyword">this</strong>.identifier = identifier;
+<a class="jxr_linenumber" name="L65" href="#L65">65</a>          <strong class="jxr_keyword">this</strong>.size = features.length;
+<a class="jxr_linenumber" name="L66" href="#L66">66</a>          <strong class="jxr_keyword">this</strong>.features = <strong class="jxr_keyword">new</strong> AtomicReference&lt;<strong class="jxr_keyword">double</strong>[]&gt;(features.clone());
+<a class="jxr_linenumber" name="L67" href="#L67">67</a>      }
+<a class="jxr_linenumber" name="L68" href="#L68">68</a>  
+<a class="jxr_linenumber" name="L69" href="#L69">69</a>      <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L70" href="#L70">70</a>  <em class="jxr_javadoccomment">     * Gets the neuron's identifier.</em>
+<a class="jxr_linenumber" name="L71" href="#L71">71</a>  <em class="jxr_javadoccomment">     *</em>
+<a class="jxr_linenumber" name="L72" href="#L72">72</a>  <em class="jxr_javadoccomment">     * @return the identifier.</em>
+<a class="jxr_linenumber" name="L73" href="#L73">73</a>  <em class="jxr_javadoccomment">     */</em>
+<a class="jxr_linenumber" name="L74" href="#L74">74</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> getIdentifier() {
+<a class="jxr_linenumber" name="L75" href="#L75">75</a>          <strong class="jxr_keyword">return</strong> identifier;
+<a class="jxr_linenumber" name="L76" href="#L76">76</a>      }
+<a class="jxr_linenumber" name="L77" href="#L77">77</a>  
+<a class="jxr_linenumber" name="L78" href="#L78">78</a>      <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L79" href="#L79">79</a>  <em class="jxr_javadoccomment">     * Gets the length of the feature set.</em>
+<a class="jxr_linenumber" name="L80" href="#L80">80</a>  <em class="jxr_javadoccomment">     *</em>
+<a class="jxr_linenumber" name="L81" href="#L81">81</a>  <em class="jxr_javadoccomment">     * @return the number of features.</em>
+<a class="jxr_linenumber" name="L82" href="#L82">82</a>  <em class="jxr_javadoccomment">     */</em>
+<a class="jxr_linenumber" name="L83" href="#L83">83</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> getSize() {
+<a class="jxr_linenumber" name="L84" href="#L84">84</a>          <strong class="jxr_keyword">return</strong> size;
+<a class="jxr_linenumber" name="L85" href="#L85">85</a>      }
+<a class="jxr_linenumber" name="L86" href="#L86">86</a>  
+<a class="jxr_linenumber" name="L87" href="#L87">87</a>      <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L88" href="#L88">88</a>  <em class="jxr_javadoccomment">     * Gets the neuron's features.</em>
+<a class="jxr_linenumber" name="L89" href="#L89">89</a>  <em class="jxr_javadoccomment">     *</em>
+<a class="jxr_linenumber" name="L90" href="#L90">90</a>  <em class="jxr_javadoccomment">     * @return a copy of the neuron's features.</em>
+<a class="jxr_linenumber" name="L91" href="#L91">91</a>  <em class="jxr_javadoccomment">     */</em>
+<a class="jxr_linenumber" name="L92" href="#L92">92</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">double</strong>[] getFeatures() {
+<a class="jxr_linenumber" name="L93" href="#L93">93</a>          <strong class="jxr_keyword">return</strong> features.get().clone();
+<a class="jxr_linenumber" name="L94" href="#L94">94</a>      }
+<a class="jxr_linenumber" name="L95" href="#L95">95</a>  
+<a class="jxr_linenumber" name="L96" href="#L96">96</a>      <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L97" href="#L97">97</a>  <em class="jxr_javadoccomment">     * Tries to atomically update the neuron's features.</em>
+<a class="jxr_linenumber" name="L98" href="#L98">98</a>  <em class="jxr_javadoccomment">     * Update will be performed only if the expected values match the</em>
+<a class="jxr_linenumber" name="L99" href="#L99">99</a>  <em class="jxr_javadoccomment">     * current values.&lt;br/&gt;</em>
+<a class="jxr_linenumber" name="L100" href="#L100">100</a> <em class="jxr_javadoccomment">     * In effect, when concurrent threads call this method, the state</em>
+<a class="jxr_linenumber" name="L101" href="#L101">101</a> <em class="jxr_javadoccomment">     * could be modified by one, so that it does not correspond to the</em>
+<a class="jxr_linenumber" name="L102" href="#L102">102</a> <em class="jxr_javadoccomment">     * the state assumed by another.</em>
+<a class="jxr_linenumber" name="L103" href="#L103">103</a> <em class="jxr_javadoccomment">     * Typically, a caller {@link #getFeatures() retrieves the current state},</em>
+<a class="jxr_linenumber" name="L104" href="#L104">104</a> <em class="jxr_javadoccomment">     * and uses it to compute the new state.</em>
+<a class="jxr_linenumber" name="L105" href="#L105">105</a> <em class="jxr_javadoccomment">     * During this computation, another thread might have done the same</em>
+<a class="jxr_linenumber" name="L106" href="#L106">106</a> <em class="jxr_javadoccomment">     * thing, and updated the state: If the current thread were to proceed</em>
+<a class="jxr_linenumber" name="L107" href="#L107">107</a> <em class="jxr_javadoccomment">     * with its own update, it would overwrite the new state (which might</em>
+<a class="jxr_linenumber" name="L108" href="#L108">108</a> <em class="jxr_javadoccomment">     * already have been used by yet other threads).</em>
+<a class="jxr_linenumber" name="L109" href="#L109">109</a> <em class="jxr_javadoccomment">     * To prevent this, the method does not perform the update when a</em>
+<a class="jxr_linenumber" name="L110" href="#L110">110</a> <em class="jxr_javadoccomment">     * concurrent modification has been detected, and returns {@code false}.</em>
+<a class="jxr_linenumber" name="L111" href="#L111">111</a> <em class="jxr_javadoccomment">     * When this happens, the caller should fetch the new current state,</em>
+<a class="jxr_linenumber" name="L112" href="#L112">112</a> <em class="jxr_javadoccomment">     * redo its computation, and call this method again.</em>
+<a class="jxr_linenumber" name="L113" href="#L113">113</a> <em class="jxr_javadoccomment">     *</em>
+<a class="jxr_linenumber" name="L114" href="#L114">114</a> <em class="jxr_javadoccomment">     * @param expect Current values of the features, as assumed by the caller.</em>
+<a class="jxr_linenumber" name="L115" href="#L115">115</a> <em class="jxr_javadoccomment">     * Update will never succeed if the contents of this array does not match</em>
+<a class="jxr_linenumber" name="L116" href="#L116">116</a> <em class="jxr_javadoccomment">     * the values returned by {@link #getFeatures()}.</em>
+<a class="jxr_linenumber" name="L117" href="#L117">117</a> <em class="jxr_javadoccomment">     * @param update Features's new values.</em>
+<a class="jxr_linenumber" name="L118" href="#L118">118</a> <em class="jxr_javadoccomment">     * @return {@code true} if the update was successful, {@code false}</em>
+<a class="jxr_linenumber" name="L119" href="#L119">119</a> <em class="jxr_javadoccomment">     * otherwise.</em>
+<a class="jxr_linenumber" name="L120" href="#L120">120</a> <em class="jxr_javadoccomment">     * @throws DimensionMismatchException if the length of {@code update} is</em>
+<a class="jxr_linenumber" name="L121" href="#L121">121</a> <em class="jxr_javadoccomment">     * not the same as specified in the {@link #Neuron(long,double[])</em>
+<a class="jxr_linenumber" name="L122" href="#L122">122</a> <em class="jxr_javadoccomment">     * constructor}.</em>
+<a class="jxr_linenumber" name="L123" href="#L123">123</a> <em class="jxr_javadoccomment">     */</em>
+<a class="jxr_linenumber" name="L124" href="#L124">124</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> compareAndSetFeatures(<strong class="jxr_keyword">double</strong>[] expect,
+<a class="jxr_linenumber" name="L125" href="#L125">125</a>                                          <strong class="jxr_keyword">double</strong>[] update) {
+<a class="jxr_linenumber" name="L126" href="#L126">126</a>         <strong class="jxr_keyword">if</strong> (update.length != size) {
+<a class="jxr_linenumber" name="L127" href="#L127">127</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/commons/math3/exception/DimensionMismatchException.html">DimensionMismatchException</a>(update.length, size);
+<a class="jxr_linenumber" name="L128" href="#L128">128</a>         }
+<a class="jxr_linenumber" name="L129" href="#L129">129</a> 
+<a class="jxr_linenumber" name="L130" href="#L130">130</a>         <em class="jxr_comment">// Get the internal reference. Note that this must not be a copy;</em>
+<a class="jxr_linenumber" name="L131" href="#L131">131</a>         <em class="jxr_comment">// otherwise the "compareAndSet" below will always fail.</em>
+<a class="jxr_linenumber" name="L132" href="#L132">132</a>         <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong>[] current = features.get();
+<a class="jxr_linenumber" name="L133" href="#L133">133</a>         <strong class="jxr_keyword">if</strong> (!containSameValues(current, expect)) {
+<a class="jxr_linenumber" name="L134" href="#L134">134</a>             <em class="jxr_comment">// Some other thread already modified the state.</em>
+<a class="jxr_linenumber" name="L135" href="#L135">135</a>             <strong class="jxr_keyword">return</strong> false;
+<a class="jxr_linenumber" name="L136" href="#L136">136</a>         }
+<a class="jxr_linenumber" name="L137" href="#L137">137</a> 
+<a class="jxr_linenumber" name="L138" href="#L138">138</a>         <em class="jxr_comment">// Increment attempt counter.</em>
+<a class="jxr_linenumber" name="L139" href="#L139">139</a>         numberOfAttemptedUpdates.incrementAndGet();
 <a class="jxr_linenumber" name="L140" href="#L140">140</a> 
-<a class="jxr_linenumber" name="L141" href="#L141">141</a>     <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L142" href="#L142">142</a> <em class="jxr_javadoccomment">     * Checks whether the contents of both arrays is the same.</em>
-<a class="jxr_linenumber" name="L143" href="#L143">143</a> <em class="jxr_javadoccomment">     *</em>
-<a class="jxr_linenumber" name="L144" href="#L144">144</a> <em class="jxr_javadoccomment">     * @param current Current values.</em>
-<a class="jxr_linenumber" name="L145" href="#L145">145</a> <em class="jxr_javadoccomment">     * @param expect Expected values.</em>
-<a class="jxr_linenumber" name="L146" href="#L146">146</a> <em class="jxr_javadoccomment">     * @throws DimensionMismatchException if the length of {@code expected}</em>
-<a class="jxr_linenumber" name="L147" href="#L147">147</a> <em class="jxr_javadoccomment">     * is not the same as specified in the {@link #Neuron(long,double[])</em>
-<a class="jxr_linenumber" name="L148" href="#L148">148</a> <em class="jxr_javadoccomment">     * constructor}.</em>
-<a class="jxr_linenumber" name="L149" href="#L149">149</a> <em class="jxr_javadoccomment">     * @return {@code true} if the arrays contain the same values.</em>
-<a class="jxr_linenumber" name="L150" href="#L150">150</a> <em class="jxr_javadoccomment">     */</em>
-<a class="jxr_linenumber" name="L151" href="#L151">151</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> containSameValues(<strong class="jxr_keyword">double</strong>[] current,
-<a class="jxr_linenumber" name="L152" href="#L152">152</a>                                       <strong class="jxr_keyword">double</strong>[] expect) {
-<a class="jxr_linenumber" name="L153" href="#L153">153</a>         <strong class="jxr_keyword">if</strong> (expect.length != size) {
-<a class="jxr_linenumber" name="L154" href="#L154">154</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/commons/math3/exception/DimensionMismatchException.html">DimensionMismatchException</a>(expect.length, size);
-<a class="jxr_linenumber" name="L155" href="#L155">155</a>         }
-<a class="jxr_linenumber" name="L156" href="#L156">156</a> 
-<a class="jxr_linenumber" name="L157" href="#L157">157</a>         <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; size; i++) {
-<a class="jxr_linenumber" name="L158" href="#L158">158</a>             <strong class="jxr_keyword">if</strong> (!Precision.equals(current[i], expect[i])) {
-<a class="jxr_linenumber" name="L159" href="#L159">159</a>                 <strong class="jxr_keyword">return</strong> false;
-<a class="jxr_linenumber" name="L160" href="#L160">160</a>             }
-<a class="jxr_linenumber" name="L161" href="#L161">161</a>         }
-<a class="jxr_linenumber" name="L162" href="#L162">162</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="L141" href="#L141">141</a>         <strong class="jxr_keyword">if</strong> (features.compareAndSet(current, update.clone())) {
+<a class="jxr_linenumber" name="L142" href="#L142">142</a>             <em class="jxr_comment">// The current thread could atomically update the state (attempt succeeded).</em>
+<a class="jxr_linenumber" name="L143" href="#L143">143</a>             numberOfSuccessfulUpdates.incrementAndGet();
+<a class="jxr_linenumber" name="L144" href="#L144">144</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="L145" href="#L145">145</a>         } <strong class="jxr_keyword">else</strong> {
+<a class="jxr_linenumber" name="L146" href="#L146">146</a>             <em class="jxr_comment">// Some other thread came first (attempt failed).</em>
+<a class="jxr_linenumber" name="L147" href="#L147">147</a>             <strong class="jxr_keyword">return</strong> false;
+<a class="jxr_linenumber" name="L148" href="#L148">148</a>         }
+<a class="jxr_linenumber" name="L149" href="#L149">149</a>     }
+<a class="jxr_linenumber" name="L150" href="#L150">150</a> 
+<a class="jxr_linenumber" name="L151" href="#L151">151</a>     <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L152" href="#L152">152</a> <em class="jxr_javadoccomment">     * Retrieves the number of calls to the</em>
+<a class="jxr_linenumber" name="L153" href="#L153">153</a> <em class="jxr_javadoccomment">     * {@link #compareAndSetFeatures(double[],double[]) compareAndSetFeatures}</em>
+<a class="jxr_linenumber" name="L154" href="#L154">154</a> <em class="jxr_javadoccomment">     * method.</em>
+<a class="jxr_linenumber" name="L155" href="#L155">155</a> <em class="jxr_javadoccomment">     * Note that if the caller wants to use this method in combination with</em>
+<a class="jxr_linenumber" name="L156" href="#L156">156</a> <em class="jxr_javadoccomment">     * {@link #getNumberOfSuccessfulUpdates()}, additional synchronization</em>
+<a class="jxr_linenumber" name="L157" href="#L157">157</a> <em class="jxr_javadoccomment">     * may be required to ensure consistency.</em>
+<a class="jxr_linenumber" name="L158" href="#L158">158</a> <em class="jxr_javadoccomment">     *</em>
+<a class="jxr_linenumber" name="L159" href="#L159">159</a> <em class="jxr_javadoccomment">     * @return the number of update attempts.</em>
+<a class="jxr_linenumber" name="L160" href="#L160">160</a> <em class="jxr_javadoccomment">     */</em>
+<a class="jxr_linenumber" name="L161" href="#L161">161</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> getNumberOfAttemptedUpdates() {
+<a class="jxr_linenumber" name="L162" href="#L162">162</a>         <strong class="jxr_keyword">return</strong> numberOfAttemptedUpdates.get();
 <a class="jxr_linenumber" name="L163" href="#L163">163</a>     }
 <a class="jxr_linenumber" name="L164" href="#L164">164</a> 
 <a class="jxr_linenumber" name="L165" href="#L165">165</a>     <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L166" href="#L166">166</a> <em class="jxr_javadoccomment">     * Prevents proxy bypass.</em>
-<a class="jxr_linenumber" name="L167" href="#L167">167</a> <em class="jxr_javadoccomment">     *</em>
-<a class="jxr_linenumber" name="L168" href="#L168">168</a> <em class="jxr_javadoccomment">     * @param in Input stream.</em>
-<a class="jxr_linenumber" name="L169" href="#L169">169</a> <em class="jxr_javadoccomment">     */</em>
-<a class="jxr_linenumber" name="L170" href="#L170">170</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> readObject(ObjectInputStream in) {
-<a class="jxr_linenumber" name="L171" href="#L171">171</a>         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException();
-<a class="jxr_linenumber" name="L172" href="#L172">172</a>     }
-<a class="jxr_linenumber" name="L173" href="#L173">173</a> 
-<a class="jxr_linenumber" name="L174" href="#L174">174</a>     <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L175" href="#L175">175</a> <em class="jxr_javadoccomment">     * Custom serialization.</em>
-<a class="jxr_linenumber" name="L176" href="#L176">176</a> <em class="jxr_javadoccomment">     *</em>
-<a class="jxr_linenumber" name="L177" href="#L177">177</a> <em class="jxr_javadoccomment">     * @return the proxy instance that will be actually serialized.</em>
-<a class="jxr_linenumber" name="L178" href="#L178">178</a> <em class="jxr_javadoccomment">     */</em>
-<a class="jxr_linenumber" name="L179" href="#L179">179</a>     <strong class="jxr_keyword">private</strong> Object writeReplace() {
-<a class="jxr_linenumber" name="L180" href="#L180">180</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/commons/math3/ml/neuralnet/Neuron.html">SerializationProxy</a>(identifier,
-<a class="jxr_linenumber" name="L181" href="#L181">181</a>                                       features.get());
-<a class="jxr_linenumber" name="L182" href="#L182">182</a>     }
-<a class="jxr_linenumber" name="L183" href="#L183">183</a> 
-<a class="jxr_linenumber" name="L184" href="#L184">184</a>     <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L185" href="#L185">185</a> <em class="jxr_javadoccomment">     * Serialization.</em>
-<a class="jxr_linenumber" name="L186" href="#L186">186</a> <em class="jxr_javadoccomment">     */</em>
-<a class="jxr_linenumber" name="L187" href="#L187">187</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/apache/commons/math3/ml/neuralnet/Neuron.html">SerializationProxy</a> <strong class="jxr_keyword">implements</strong> Serializable {
-<a class="jxr_linenumber" name="L188" href="#L188">188</a>         <em class="jxr_javadoccomment">/** Serializable. */</em>
-<a class="jxr_linenumber" name="L189" href="#L189">189</a>         <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> serialVersionUID = 20130207L;
-<a class="jxr_linenumber" name="L190" href="#L190">190</a>         <em class="jxr_javadoccomment">/** Features. */</em>
-<a class="jxr_linenumber" name="L191" href="#L191">191</a>         <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong>[] features;
-<a class="jxr_linenumber" name="L192" href="#L192">192</a>         <em class="jxr_javadoccomment">/** Identifier. */</em>
-<a class="jxr_linenumber" name="L193" href="#L193">193</a>         <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> identifier;
+<a class="jxr_linenumber" name="L166" href="#L166">166</a> <em class="jxr_javadoccomment">     * Retrieves the number of successful calls to the</em>
+<a class="jxr_linenumber" name="L167" href="#L167">167</a> <em class="jxr_javadoccomment">     * {@link #compareAndSetFeatures(double[],double[]) compareAndSetFeatures}</em>
+<a class="jxr_linenumber" name="L168" href="#L168">168</a> <em class="jxr_javadoccomment">     * method.</em>
+<a class="jxr_linenumber" name="L169" href="#L169">169</a> <em class="jxr_javadoccomment">     * Note that if the caller wants to use this method in combination with</em>
+<a class="jxr_linenumber" name="L170" href="#L170">170</a> <em class="jxr_javadoccomment">     * {@link #getNumberOfAttemptedUpdates()}, additional synchronization</em>
+<a class="jxr_linenumber" name="L171" href="#L171">171</a> <em class="jxr_javadoccomment">     * may be required to ensure consistency.</em>
+<a class="jxr_linenumber" name="L172" href="#L172">172</a> <em class="jxr_javadoccomment">     *</em>
+<a class="jxr_linenumber" name="L173" href="#L173">173</a> <em class="jxr_javadoccomment">     * @return the number of successful updates.</em>
+<a class="jxr_linenumber" name="L174" href="#L174">174</a> <em class="jxr_javadoccomment">     */</em>
+<a class="jxr_linenumber" name="L175" href="#L175">175</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> getNumberOfSuccessfulUpdates() {
+<a class="jxr_linenumber" name="L176" href="#L176">176</a>         <strong class="jxr_keyword">return</strong> numberOfSuccessfulUpdates.get();
+<a class="jxr_linenumber" name="L177" href="#L177">177</a>     }
+<a class="jxr_linenumber" name="L178" href="#L178">178</a> 
+<a class="jxr_linenumber" name="L179" href="#L179">179</a>     <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L180" href="#L180">180</a> <em class="jxr_javadoccomment">     * Checks whether the contents of both arrays is the same.</em>
+<a class="jxr_linenumber" name="L181" href="#L181">181</a> <em class="jxr_javadoccomment">     *</em>
+<a class="jxr_linenumber" name="L182" href="#L182">182</a> <em class="jxr_javadoccomment">     * @param current Current values.</em>
+<a class="jxr_linenumber" name="L183" href="#L183">183</a> <em class="jxr_javadoccomment">     * @param expect Expected values.</em>
+<a class="jxr_linenumber" name="L184" href="#L184">184</a> <em class="jxr_javadoccomment">     * @throws DimensionMismatchException if the length of {@code expected}</em>
+<a class="jxr_linenumber" name="L185" href="#L185">185</a> <em class="jxr_javadoccomment">     * is not the same as specified in the {@link #Neuron(long,double[])</em>
+<a class="jxr_linenumber" name="L186" href="#L186">186</a> <em class="jxr_javadoccomment">     * constructor}.</em>
+<a class="jxr_linenumber" name="L187" href="#L187">187</a> <em class="jxr_javadoccomment">     * @return {@code true} if the arrays contain the same values.</em>
+<a class="jxr_linenumber" name="L188" href="#L188">188</a> <em class="jxr_javadoccomment">     */</em>
+<a class="jxr_linenumber" name="L189" href="#L189">189</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> containSameValues(<strong class="jxr_keyword">double</strong>[] current,
+<a class="jxr_linenumber" name="L190" href="#L190">190</a>                                       <strong class="jxr_keyword">double</strong>[] expect) {
+<a class="jxr_linenumber" name="L191" href="#L191">191</a>         <strong class="jxr_keyword">if</strong> (expect.length != size) {
+<a class="jxr_linenumber" name="L192" href="#L192">192</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/commons/math3/exception/DimensionMismatchException.html">DimensionMismatchException</a>(expect.length, size);
+<a class="jxr_linenumber" name="L193" href="#L193">193</a>         }
 <a class="jxr_linenumber" name="L194" href="#L194">194</a> 
-<a class="jxr_linenumber" name="L195" href="#L195">195</a>         <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L196" href="#L196">196</a> <em class="jxr_javadoccomment">         * @param identifier Identifier.</em>
-<a class="jxr_linenumber" name="L197" href="#L197">197</a> <em class="jxr_javadoccomment">         * @param features Features.</em>
-<a class="jxr_linenumber" name="L198" href="#L198">198</a> <em class="jxr_javadoccomment">         */</em>
-<a class="jxr_linenumber" name="L199" href="#L199">199</a>         <a href="../../../../../../org/apache/commons/math3/ml/neuralnet/Neuron.html">SerializationProxy</a>(<strong class="jxr_keyword">long</strong> identifier,
-<a class="jxr_linenumber" name="L200" href="#L200">200</a>                            <strong class="jxr_keyword">double</strong>[] features) {
-<a class="jxr_linenumber" name="L201" href="#L201">201</a>             <strong class="jxr_keyword">this</strong>.identifier = identifier;
-<a class="jxr_linenumber" name="L202" href="#L202">202</a>             <strong class="jxr_keyword">this</strong>.features = features;
-<a class="jxr_linenumber" name="L203" href="#L203">203</a>         }
-<a class="jxr_linenumber" name="L204" href="#L204">204</a> 
-<a class="jxr_linenumber" name="L205" href="#L205">205</a>         <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L206" href="#L206">206</a> <em class="jxr_javadoccomment">         * Custom serialization.</em>
-<a class="jxr_linenumber" name="L207" href="#L207">207</a> <em class="jxr_javadoccomment">         *</em>
-<a class="jxr_linenumber" name="L208" href="#L208">208</a> <em class="jxr_javadoccomment">         * @return the {@link Neuron} for which this instance is the proxy.</em>
-<a class="jxr_linenumber" name="L209" href="#L209">209</a> <em class="jxr_javadoccomment">         */</em>
-<a class="jxr_linenumber" name="L210" href="#L210">210</a>         <strong class="jxr_keyword">private</strong> Object readResolve() {
-<a class="jxr_linenumber" name="L211" href="#L211">211</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/commons/math3/ml/neuralnet/Neuron.html">Neuron</a>(identifier,
-<a class="jxr_linenumber" name="L212" href="#L212">212</a>                               features);
-<a class="jxr_linenumber" name="L213" href="#L213">213</a>         }
-<a class="jxr_linenumber" name="L214" href="#L214">214</a>     }
-<a class="jxr_linenumber" name="L215" href="#L215">215</a> }
+<a class="jxr_linenumber" name="L195" href="#L195">195</a>         <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; size; i++) {
+<a class="jxr_linenumber" name="L196" href="#L196">196</a>             <strong class="jxr_keyword">if</strong> (!Precision.equals(current[i], expect[i])) {
+<a class="jxr_linenumber" name="L197" href="#L197">197</a>                 <strong class="jxr_keyword">return</strong> false;
+<a class="jxr_linenumber" name="L198" href="#L198">198</a>             }
+<a class="jxr_linenumber" name="L199" href="#L199">199</a>         }
+<a class="jxr_linenumber" name="L200" href="#L200">200</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="L201" href="#L201">201</a>     }
+<a class="jxr_linenumber" name="L202" href="#L202">202</a> 
+<a class="jxr_linenumber" name="L203" href="#L203">203</a>     <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L204" href="#L204">204</a> <em class="jxr_javadoccomment">     * Prevents proxy bypass.</em>
+<a class="jxr_linenumber" name="L205" href="#L205">205</a> <em class="jxr_javadoccomment">     *</em>
+<a class="jxr_linenumber" name="L206" href="#L206">206</a> <em class="jxr_javadoccomment">     * @param in Input stream.</em>
+<a class="jxr_linenumber" name="L207" href="#L207">207</a> <em class="jxr_javadoccomment">     */</em>
+<a class="jxr_linenumber" name="L208" href="#L208">208</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> readObject(ObjectInputStream in) {
+<a class="jxr_linenumber" name="L209" href="#L209">209</a>         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException();
+<a class="jxr_linenumber" name="L210" href="#L210">210</a>     }
+<a class="jxr_linenumber" name="L211" href="#L211">211</a> 
+<a class="jxr_linenumber" name="L212" href="#L212">212</a>     <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L213" href="#L213">213</a> <em class="jxr_javadoccomment">     * Custom serialization.</em>
+<a class="jxr_linenumber" name="L214" href="#L214">214</a> <em class="jxr_javadoccomment">     *</em>
+<a class="jxr_linenumber" name="L215" href="#L215">215</a> <em class="jxr_javadoccomment">     * @return the proxy instance that will be actually serialized.</em>
+<a class="jxr_linenumber" name="L216" href="#L216">216</a> <em class="jxr_javadoccomment">     */</em>
+<a class="jxr_linenumber" name="L217" href="#L217">217</a>     <strong class="jxr_keyword">private</strong> Object writeReplace() {
+<a class="jxr_linenumber" name="L218" href="#L218">218</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/commons/math3/ml/neuralnet/Neuron.html">SerializationProxy</a>(identifier,
+<a class="jxr_linenumber" name="L219" href="#L219">219</a>                                       features.get());
+<a class="jxr_linenumber" name="L220" href="#L220">220</a>     }
+<a class="jxr_linenumber" name="L221" href="#L221">221</a> 
+<a class="jxr_linenumber" name="L222" href="#L222">222</a>     <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L223" href="#L223">223</a> <em class="jxr_javadoccomment">     * Serialization.</em>
+<a class="jxr_linenumber" name="L224" href="#L224">224</a> <em class="jxr_javadoccomment">     */</em>
+<a class="jxr_linenumber" name="L225" href="#L225">225</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/apache/commons/math3/ml/neuralnet/Neuron.html">SerializationProxy</a> <strong class="jxr_keyword">implements</strong> Serializable {
+<a class="jxr_linenumber" name="L226" href="#L226">226</a>         <em class="jxr_javadoccomment">/** Serializable. */</em>
+<a class="jxr_linenumber" name="L227" href="#L227">227</a>         <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> serialVersionUID = 20130207L;
+<a class="jxr_linenumber" name="L228" href="#L228">228</a>         <em class="jxr_javadoccomment">/** Features. */</em>
+<a class="jxr_linenumber" name="L229" href="#L229">229</a>         <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong>[] features;
+<a class="jxr_linenumber" name="L230" href="#L230">230</a>         <em class="jxr_javadoccomment">/** Identifier. */</em>
+<a class="jxr_linenumber" name="L231" href="#L231">231</a>         <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> identifier;
+<a class="jxr_linenumber" name="L232" href="#L232">232</a> 
+<a class="jxr_linenumber" name="L233" href="#L233">233</a>         <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L234" href="#L234">234</a> <em class="jxr_javadoccomment">         * @param identifier Identifier.</em>
+<a class="jxr_linenumber" name="L235" href="#L235">235</a> <em class="jxr_javadoccomment">         * @param features Features.</em>
+<a class="jxr_linenumber" name="L236" href="#L236">236</a> <em class="jxr_javadoccomment">         */</em>
+<a class="jxr_linenumber" name="L237" href="#L237">237</a>         <a href="../../../../../../org/apache/commons/math3/ml/neuralnet/Neuron.html">SerializationProxy</a>(<strong class="jxr_keyword">long</strong> identifier,
+<a class="jxr_linenumber" name="L238" href="#L238">238</a>                            <strong class="jxr_keyword">double</strong>[] features) {
+<a class="jxr_linenumber" name="L239" href="#L239">239</a>             <strong class="jxr_keyword">this</strong>.identifier = identifier;
+<a class="jxr_linenumber" name="L240" href="#L240">240</a>             <strong class="jxr_keyword">this</strong>.features = features;
+<a class="jxr_linenumber" name="L241" href="#L241">241</a>         }
+<a class="jxr_linenumber" name="L242" href="#L242">242</a> 
+<a class="jxr_linenumber" name="L243" href="#L243">243</a>         <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L244" href="#L244">244</a> <em class="jxr_javadoccomment">         * Custom serialization.</em>
+<a class="jxr_linenumber" name="L245" href="#L245">245</a> <em class="jxr_javadoccomment">         *</em>
+<a class="jxr_linenumber" name="L246" href="#L246">246</a> <em class="jxr_javadoccomment">         * @return the {@link Neuron} for which this instance is the proxy.</em>
+<a class="jxr_linenumber" name="L247" href="#L247">247</a> <em class="jxr_javadoccomment">         */</em>
+<a class="jxr_linenumber" name="L248" href="#L248">248</a>         <strong class="jxr_keyword">private</strong> Object readResolve() {
+<a class="jxr_linenumber" name="L249" href="#L249">249</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/commons/math3/ml/neuralnet/Neuron.html">Neuron</a>(identifier,
+<a class="jxr_linenumber" name="L250" href="#L250">250</a>                               features);
+<a class="jxr_linenumber" name="L251" href="#L251">251</a>         }
+<a class="jxr_linenumber" name="L252" href="#L252">252</a>     }
+<a class="jxr_linenumber" name="L253" href="#L253">253</a> }
 </pre>
 <hr/>
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