[jira] Updated: (LUCENE-1910) Extension to MoreLikeThis to use tag information
[ https://issues.apache.org/jira/browse/LUCENE-1910?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Thomas D'Silva updated LUCENE-1910: --- Attachment: (was: LUCENE-1910.patch) Extension to MoreLikeThis to use tag information Key: LUCENE-1910 URL: https://issues.apache.org/jira/browse/LUCENE-1910 Project: Lucene - Java Issue Type: New Feature Components: contrib/* Reporter: Thomas D'Silva Priority: Minor I would like to contribute a class based on the MoreLikeThis class in contrib/queries that generates a query based on the tags associated with a document. The class assumes that documents are tagged with a set of tags (which are stored in the index in a seperate Field). The class determines the top document terms associated with a given tag using the information gain metric. While generating a MoreLikeThis query for a document the tags associated with document are used to determine the terms in the query. This class is useful for finding similar documents to a document that does not have many relevant terms but was tagged. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online. - To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org For additional commands, e-mail: java-dev-h...@lucene.apache.org
[jira] Commented: (LUCENE-1910) Extension to MoreLikeThis to use tag information
[ https://issues.apache.org/jira/browse/LUCENE-1910?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=12783010#action_12783010 ] Thomas D'Silva commented on LUCENE-1910: Mark, I refactored the code so that the tag and document probabilities are computed and used to find the most important document terms corresponding to a given tag term during the index creation phase. These most important document terms (ranked by information gain) for a given tag term is stored as meta information in the index when the index is created. I added a class TagIndexWriter which extends IndexWriter which is used to create an index which can be used to run MoreLikeThisUsingTags queries. I recreated a test index with one million documents, and assigned tags (tag_0,...tag_4) to 10%,20%.. and so on of the documents. The time taken to generate a query on an index created using TagIndexWriter: tag name, number of documents, time in ms tag_0, 10134, 22 tag_1, 19996, 29 tag_2, 30010, 6 tag_3, 39907, 6 tag_4, 50148, 9 Since the document terms corresponding to a tag term is computed during the indexing phase, the time taken to generate a MoreLikeThisUsingTags query is constant. Thanks, Thomas Extension to MoreLikeThis to use tag information Key: LUCENE-1910 URL: https://issues.apache.org/jira/browse/LUCENE-1910 Project: Lucene - Java Issue Type: New Feature Components: contrib/* Reporter: Thomas D'Silva Priority: Minor I would like to contribute a class based on the MoreLikeThis class in contrib/queries that generates a query based on the tags associated with a document. The class assumes that documents are tagged with a set of tags (which are stored in the index in a seperate Field). The class determines the top document terms associated with a given tag using the information gain metric. While generating a MoreLikeThis query for a document the tags associated with document are used to determine the terms in the query. This class is useful for finding similar documents to a document that does not have many relevant terms but was tagged. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online. - To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org For additional commands, e-mail: java-dev-h...@lucene.apache.org
[jira] Updated: (LUCENE-1910) Extension to MoreLikeThis to use tag information
[ https://issues.apache.org/jira/browse/LUCENE-1910?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Thomas D'Silva updated LUCENE-1910: --- Attachment: LUCENE-1910.patch Extension to MoreLikeThis to use tag information Key: LUCENE-1910 URL: https://issues.apache.org/jira/browse/LUCENE-1910 Project: Lucene - Java Issue Type: New Feature Components: contrib/* Reporter: Thomas D'Silva Priority: Minor Attachments: LUCENE-1910.patch I would like to contribute a class based on the MoreLikeThis class in contrib/queries that generates a query based on the tags associated with a document. The class assumes that documents are tagged with a set of tags (which are stored in the index in a seperate Field). The class determines the top document terms associated with a given tag using the information gain metric. While generating a MoreLikeThis query for a document the tags associated with document are used to determine the terms in the query. This class is useful for finding similar documents to a document that does not have many relevant terms but was tagged. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online. - To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org For additional commands, e-mail: java-dev-h...@lucene.apache.org
[jira] Issue Comment Edited: (LUCENE-1910) Extension to MoreLikeThis to use tag information
[ https://issues.apache.org/jira/browse/LUCENE-1910?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=12761997#action_12761997 ] Thomas D'Silva edited comment on LUCENE-1910 at 10/4/09 10:21 AM: -- Mark, I refactored the class to include more descriptive variable names. I also modified the code so that while calculating information gain only terms belonging to documents that have been tagged with the given tag and used (and not all the terms in the index). I tested this class on a test index containing one million documents. The documents were tagged with five tags (tag_0...tag_4). tag_0 was assigned to approximately 10% of the documents, tag_1 to 20% and so on. tag name, number of documents, time in ms tag_0, 10134, 137314 tag_1, 19996, 219527 tag_2, 30010, 315336 tag_3, 39907, 413615 tag_4, 50148, 507350 The time taken to generate the query for a tag depends on the number of documents in the index containing the tag and scales linearly with the number of documents. The top document terms for a given are cached in a hashmap once they have been generated in order to speed up subsequent lookups. Thanks, Thomas was (Author: twdsi...@gmail.com): I refactored the class to include more descriptive variable names. I also modified the code so that while calculating information gain only terms belonging to documents that have been tagged with the given tag and used (and not all the terms in the index). I tested this class on a test index containing one million documents. The documents were tagged with five tags (tag_0...tag_4). tag_0 was assigned to approximately 10% of the documents, tag_1 to 20% and so on. tag name, number of documents, time in ms tag_0, 10134, 137314 tag_1, 19996, 219527 tag_2, 30010, 315336 tag_3, 39907, 413615 tag_4, 50148, 507350 The time taken to generate the query for a tag depends on the number of documents in the index containing the tag and scales linearly with the number of documents. The top document terms for a given are cached in a hashmap once they have been generated in order to speed up subsequent lookups. Extension to MoreLikeThis to use tag information Key: LUCENE-1910 URL: https://issues.apache.org/jira/browse/LUCENE-1910 Project: Lucene - Java Issue Type: New Feature Components: contrib/* Reporter: Thomas D'Silva Priority: Minor Attachments: LUCENE-1910.patch, LUCENE-1910.patch I would like to contribute a class based on the MoreLikeThis class in contrib/queries that generates a query based on the tags associated with a document. The class assumes that documents are tagged with a set of tags (which are stored in the index in a seperate Field). The class determines the top document terms associated with a given tag using the information gain metric. While generating a MoreLikeThis query for a document the tags associated with document are used to determine the terms in the query. This class is useful for finding similar documents to a document that does not have many relevant terms but was tagged. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online. - To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org For additional commands, e-mail: java-dev-h...@lucene.apache.org
[jira] Updated: (LUCENE-1910) Extension to MoreLikeThis to use tag information
[ https://issues.apache.org/jira/browse/LUCENE-1910?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Thomas D'Silva updated LUCENE-1910: --- Attachment: (was: LUCENE-1910.patch) Extension to MoreLikeThis to use tag information Key: LUCENE-1910 URL: https://issues.apache.org/jira/browse/LUCENE-1910 Project: Lucene - Java Issue Type: New Feature Components: contrib/* Reporter: Thomas D'Silva Priority: Minor Attachments: LUCENE-1910.patch I would like to contribute a class based on the MoreLikeThis class in contrib/queries that generates a query based on the tags associated with a document. The class assumes that documents are tagged with a set of tags (which are stored in the index in a seperate Field). The class determines the top document terms associated with a given tag using the information gain metric. While generating a MoreLikeThis query for a document the tags associated with document are used to determine the terms in the query. This class is useful for finding similar documents to a document that does not have many relevant terms but was tagged. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online. - To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org For additional commands, e-mail: java-dev-h...@lucene.apache.org
[jira] Updated: (LUCENE-1910) Extension to MoreLikeThis to use tag information
[ https://issues.apache.org/jira/browse/LUCENE-1910?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Thomas D'Silva updated LUCENE-1910: --- Priority: Minor (was: Major) Extension to MoreLikeThis to use tag information Key: LUCENE-1910 URL: https://issues.apache.org/jira/browse/LUCENE-1910 Project: Lucene - Java Issue Type: New Feature Components: contrib/* Reporter: Thomas D'Silva Priority: Minor Attachments: LUCENE-1910.patch I would like to contribute a class based on the MoreLikeThis class in contrib/queries that generates a query based on the tags associated with a document. The class assumes that documents are tagged with a set of tags (which are stored in the index in a seperate Field). The class determines the top document terms associated with a given tag using the information gain metric. While generating a MoreLikeThis query for a document the tags associated with document are used to determine the terms in the query. This class is useful for finding similar documents to a document that does not have many relevant terms but was tagged. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online. - To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org For additional commands, e-mail: java-dev-h...@lucene.apache.org
[jira] Created: (LUCENE-1910) Extension to MoreLikeThis to use tag information
Extension to MoreLikeThis to use tag information Key: LUCENE-1910 URL: https://issues.apache.org/jira/browse/LUCENE-1910 Project: Lucene - Java Issue Type: New Feature Components: contrib/* Reporter: Thomas D'Silva I would like to contribute a class based on the MoreLikeThis class in contrib/queries that generates a query based on the tags associated with a document. The class assumes that documents are tagged with a set of tags (which are stored in the index in a seperate Field). The class determines the top document terms associated with a given tag using the information gain metric. While generating a MoreLikeThis query for a document the tags associated with document are used to determine the terms in the query. This class is useful for finding similar documents to a document that does not have many relevant terms but was tagged. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online. - To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org For additional commands, e-mail: java-dev-h...@lucene.apache.org
[jira] Updated: (LUCENE-1910) Extension to MoreLikeThis to use tag information
[ https://issues.apache.org/jira/browse/LUCENE-1910?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Thomas D'Silva updated LUCENE-1910: --- Attachment: LUCENE-1910.patch Extension to MoreLikeThis to use tag information Key: LUCENE-1910 URL: https://issues.apache.org/jira/browse/LUCENE-1910 Project: Lucene - Java Issue Type: New Feature Components: contrib/* Reporter: Thomas D'Silva Attachments: LUCENE-1910.patch I would like to contribute a class based on the MoreLikeThis class in contrib/queries that generates a query based on the tags associated with a document. The class assumes that documents are tagged with a set of tags (which are stored in the index in a seperate Field). The class determines the top document terms associated with a given tag using the information gain metric. While generating a MoreLikeThis query for a document the tags associated with document are used to determine the terms in the query. This class is useful for finding similar documents to a document that does not have many relevant terms but was tagged. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online. - To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org For additional commands, e-mail: java-dev-h...@lucene.apache.org
[jira] Updated: (LUCENE-1910) Extension to MoreLikeThis to use tag information
[ https://issues.apache.org/jira/browse/LUCENE-1910?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Thomas D'Silva updated LUCENE-1910: --- Attachment: (was: LUCENE-1910.patch) Extension to MoreLikeThis to use tag information Key: LUCENE-1910 URL: https://issues.apache.org/jira/browse/LUCENE-1910 Project: Lucene - Java Issue Type: New Feature Components: contrib/* Reporter: Thomas D'Silva Attachments: LUCENE-1910.patch I would like to contribute a class based on the MoreLikeThis class in contrib/queries that generates a query based on the tags associated with a document. The class assumes that documents are tagged with a set of tags (which are stored in the index in a seperate Field). The class determines the top document terms associated with a given tag using the information gain metric. While generating a MoreLikeThis query for a document the tags associated with document are used to determine the terms in the query. This class is useful for finding similar documents to a document that does not have many relevant terms but was tagged. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online. - To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org For additional commands, e-mail: java-dev-h...@lucene.apache.org
[jira] Updated: (LUCENE-1910) Extension to MoreLikeThis to use tag information
[ https://issues.apache.org/jira/browse/LUCENE-1910?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Thomas D'Silva updated LUCENE-1910: --- Attachment: LUCENE-1910.patch Extension to MoreLikeThis to use tag information Key: LUCENE-1910 URL: https://issues.apache.org/jira/browse/LUCENE-1910 Project: Lucene - Java Issue Type: New Feature Components: contrib/* Reporter: Thomas D'Silva Attachments: LUCENE-1910.patch I would like to contribute a class based on the MoreLikeThis class in contrib/queries that generates a query based on the tags associated with a document. The class assumes that documents are tagged with a set of tags (which are stored in the index in a seperate Field). The class determines the top document terms associated with a given tag using the information gain metric. While generating a MoreLikeThis query for a document the tags associated with document are used to determine the terms in the query. This class is useful for finding similar documents to a document that does not have many relevant terms but was tagged. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online. - To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org For additional commands, e-mail: java-dev-h...@lucene.apache.org
