horn-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From edwardy...@apache.org
Subject incubator-horn git commit: add missed files
Date Mon, 25 Apr 2016 04:33:23 GMT
Repository: incubator-horn
Updated Branches:
  refs/heads/master 5f001cf9a -> 277773c0a


add missed files


Project: http://git-wip-us.apache.org/repos/asf/incubator-horn/repo
Commit: http://git-wip-us.apache.org/repos/asf/incubator-horn/commit/277773c0
Tree: http://git-wip-us.apache.org/repos/asf/incubator-horn/tree/277773c0
Diff: http://git-wip-us.apache.org/repos/asf/incubator-horn/diff/277773c0

Branch: refs/heads/master
Commit: 277773c0ac56725e306b87e24dd92cc71e4bd25c
Parents: 5f001cf
Author: Edward J. Yoon <edwardyoon@apache.org>
Authored: Mon Apr 25 13:29:21 2016 +0900
Committer: Edward J. Yoon <edwardyoon@apache.org>
Committed: Mon Apr 25 13:31:31 2016 +0900

----------------------------------------------------------------------
 .../org/apache/horn/funcs/FunctionFactory.java  | 68 ++++++++++++++++++++
 .../org/apache/horn/funcs/IdentityFunction.java | 38 +++++++++++
 2 files changed, 106 insertions(+)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/incubator-horn/blob/277773c0/src/main/java/org/apache/horn/funcs/FunctionFactory.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/horn/funcs/FunctionFactory.java b/src/main/java/org/apache/horn/funcs/FunctionFactory.java
new file mode 100644
index 0000000..9b38a0d
--- /dev/null
+++ b/src/main/java/org/apache/horn/funcs/FunctionFactory.java
@@ -0,0 +1,68 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.horn.funcs;
+
+import org.apache.hama.commons.math.DoubleDoubleFunction;
+import org.apache.hama.commons.math.DoubleFunction;
+
+/**
+ * Factory to create the functions.
+ * 
+ */
+public class FunctionFactory {
+
+  /**
+   * Create a double function with specified name.
+   * 
+   * @param functionName
+   * @return an appropriate double function.
+   */
+  public static DoubleFunction createDoubleFunction(String functionName) {
+    if (functionName.equalsIgnoreCase(Sigmoid.class.getSimpleName())) {
+      return new Sigmoid();
+    } else if (functionName.equalsIgnoreCase(Tanh.class.getSimpleName())) {
+      return new Tanh();
+    } else if (functionName.equalsIgnoreCase(IdentityFunction.class
+        .getSimpleName())) {
+      return new IdentityFunction();
+    }
+
+    throw new IllegalArgumentException(String.format(
+        "No double function with name '%s' exists.", functionName));
+  }
+
+  /**
+   * Create a double double function with specified name.
+   * 
+   * @param functionName
+   * @return an appropriate double double function.
+   */
+  public static DoubleDoubleFunction createDoubleDoubleFunction(
+      String functionName) {
+    if (functionName.equalsIgnoreCase(SquaredError.class.getSimpleName())) {
+      return new SquaredError();
+    } else if (functionName
+        .equalsIgnoreCase(CrossEntropy.class.getSimpleName())) {
+      return new CrossEntropy();
+    }
+
+    throw new IllegalArgumentException(String.format(
+        "No double double function with name '%s' exists.", functionName));
+  }
+
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/incubator-horn/blob/277773c0/src/main/java/org/apache/horn/funcs/IdentityFunction.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/horn/funcs/IdentityFunction.java b/src/main/java/org/apache/horn/funcs/IdentityFunction.java
new file mode 100644
index 0000000..01e2e67
--- /dev/null
+++ b/src/main/java/org/apache/horn/funcs/IdentityFunction.java
@@ -0,0 +1,38 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.horn.funcs;
+
+import org.apache.hama.commons.math.DoubleFunction;
+
+/**
+ * The identity function f(x) = x.
+ * 
+ */
+public class IdentityFunction extends DoubleFunction {
+
+  @Override
+  public double apply(double value) {
+    return value;
+  }
+
+  @Override
+  public double applyDerivative(double value) {
+    return 1;
+  }
+
+}
\ No newline at end of file


Mime
View raw message