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From "Karl Wettin (JIRA)" <j...@apache.org>
Subject [jira] Updated: (LUCENE-626) Extended spell checker with phrase support and adaptive user session analysis.
Date Tue, 23 Oct 2007 20:18:50 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-626?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Karl Wettin updated LUCENE-626:
-------------------------------

       Assignee:     (was: Karl Wettin)
    Description: 
Extensive javadocs available in patch, but I also try to keep it compiled here: http://ginandtonique.org/~kalle/javadocs/didyoumean/org/apache/lucene/search/didyoumean/package-summary.html#package_description

A semi-retarded reinforcement learning thingy backed by algorithmic second level suggestion
schemes that learns from and adapts to user behavior as queries change, suggestions are accepted
or declined, etc.

Except for detecting spelling errors it considers context, composition/decomposition and a
few other things.

heroes of light and magik -> heroes of might and magic
vinci da code -> da vinci code
java docs -> javadocs
blacksabbath -> black sabbath

Depends on LUCENE-550

  was:
Extensive java docs available in patch, but I try to keep it compiled here: http://ginandtonique.org/~kalle/javadocs/didyoumean/org/apache/lucene/search/didyoumean/package-summary.html#package_description

Example:
{code:java}
public void testImportData() throws Exception {

    // load 200 000 user queries with session data and time stamp. no goals specified.

    System.out.println("Processing http://ginandtonique.org/~kalle/data/pirate.data.gz");
    importFile(new InputStreamReader(new GZIPInputStream(new URL("http://ginandtonique.org/~kalle/data/pirate.data.gz").openStream())));
    System.out.println("Processing http://ginandtonique.org/~kalle/data/hero.data.gz");
    importFile(new InputStreamReader(new GZIPInputStream(new URL("http://ginandtonique.org/~kalle/data/hero.data.gz").openStream())));
    System.out.println("Done.");

    // run some tests without the second level suggestions,
    // i.e. user behavioral data only. no ngrams or so.
    
    assertEquals("pirates of the caribbean", facade.didYouMean("pirates ofthe caribbean"));

    assertEquals("pirates of the caribbean", facade.didYouMean("pirates of the carribbean"));

    assertEquals("pirates caribbean", facade.didYouMean("pirates carricean"));
    assertEquals("pirates of the caribbean", facade.didYouMean("pirates of the carriben"));
    assertEquals("pirates of the caribbean", facade.didYouMean("pirates of the carabien"));
    assertEquals("pirates of the caribbean", facade.didYouMean("pirates of the carabbean"));

    assertEquals("pirates of the caribbean", facade.didYouMean("pirates og carribean"));

    assertEquals("pirates of the caribbean soundtrack", facade.didYouMean("pirates of the
caribbean music"));
    assertEquals("pirates of the caribbean score", facade.didYouMean("pirates of the caribbean
soundtrack"));

    assertEquals("pirate of caribbean", facade.didYouMean("pirate of carabian"));
    assertEquals("pirates of caribbean", facade.didYouMean("pirate of caribbean"));
    assertEquals("pirates of caribbean", facade.didYouMean("pirates of caribbean"));

    // depening on how many hits and goals are noted with these two queries
    // perhaps the delta should be added to a synonym dictionary? 
    assertEquals("homm iv", facade.didYouMean("homm 4"));

    // not yet known.. and we have no second level yet.
    assertNull(facade.didYouMean("the pilates"));

    // use the dictionary built from user queries to build the token phrase and ngram suggester.
     
    facade.getDictionary().getPrioritesBySecondLevelSuggester().put(Factory.ngramTokenPhraseSuggesterFactory(facade.getDictionary()),
1d);

    // now it's learned
    assertEquals("the pirates", facade.didYouMean("the pilates"));

    // typos
    assertEquals("heroes of might and magic", facade.didYouMean("heroes of fight and magic"));
    assertEquals("heroes of might and magic", facade.didYouMean("heroes of right and magic"));
    assertEquals("heroes of might and magic", facade.didYouMean("heroes of magic and light"));

    // composite dictionary key not learned yet..
    assertEquals(null, facade.didYouMean("heroesof lightand magik"));
    // learn
    assertEquals("heroes of might and magic", facade.didYouMean("heroes of light and magik"));
    // test
    assertEquals("heroes of might and magic", facade.didYouMean("heroesof lightand magik"));


    // wrong term order
    assertEquals("heroes of might and magic", facade.didYouMean("heroes of magic and might"));

  }
{code}



> Extended spell checker with phrase support and adaptive user session analysis.
> ------------------------------------------------------------------------------
>
>                 Key: LUCENE-626
>                 URL: https://issues.apache.org/jira/browse/LUCENE-626
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Search
>            Reporter: Karl Wettin
>            Priority: Minor
>         Attachments: LUCENE-626_20071023.txt
>
>
> Extensive javadocs available in patch, but I also try to keep it compiled here: http://ginandtonique.org/~kalle/javadocs/didyoumean/org/apache/lucene/search/didyoumean/package-summary.html#package_description
> A semi-retarded reinforcement learning thingy backed by algorithmic second level suggestion
schemes that learns from and adapts to user behavior as queries change, suggestions are accepted
or declined, etc.
> Except for detecting spelling errors it considers context, composition/decomposition
and a few other things.
> heroes of light and magik -> heroes of might and magic
> vinci da code -> da vinci code
> java docs -> javadocs
> blacksabbath -> black sabbath
> Depends on LUCENE-550

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