NovelAnalyzer - wraps your choice of Lucene Analyzer and filters out all "boilerplate" text [LUCENE-725]

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This is a class I have found to be useful for analyzing small (in the hundreds) collections of documents and removing any duplicate content such as standard disclaimers or repeated text in an exchange of emails.
This has applications in sampling query results to identify key phrases, improving speed-reading of results with similar content (eg email threads/forum messages) or just removing duplicated noise from a search index.

To be more generally useful it needs to scale to millions of documents - in which case an alternative implementation is required. See the notes in the Javadocs for this class for more discussion on this

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Migrated from LUCENE-725 by Mark Harwood (@markharwood), updated Jul 24 2013
Attachments: NovelAnalyzer.java (versions: 4)

[asfimport]

Mark Harwood (@markharwood) (migrated from JIRA)

As per comment - a "novel text only" analyzer

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Mark Harwood (@markharwood) (migrated from JIRA)

Updated version - uses Stack as more efficient collection

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Mark Harwood (@markharwood) (migrated from JIRA)

Updated version can now process any number of documents and remove "boilerplate" text tokens such as copyright notices etc.
New version automatically maintains only a sliding window of content in which it searches for duplicate paragraphs enabling it to process unlimited numbers of documents.

[asfimport]

Karl Wettin (migrated from JIRA)

If you hang on for a week I too will be taking a closer look at this code.

http://www.nabble.com/Clustering-Demo-tt17127240.html#a17449440

[asfimport]

Mark Harwood (@markharwood) (migrated from JIRA)

Updated for new 3.0 APIs

[asfimport]

Mark Harwood (@markharwood) (migrated from JIRA)

Updated to work with Lucene 4 APIs.