I need to generate a vector of u开发者_JAVA百科nigrams, i.e. a vector of all the unique words which appear in a specific text field that I have stored as part of a broader JSON object in MongoDB.
I have a java webapp, built with Lucene, and I keep getting various \"file already closed\" exceptions - depending on which Directory implementation I use.I\'ve been able to get \"java.io.IOException
I\'m trying to figure out the way that payloads work in Lucene and I can\'t seem to grasp it. My situation is as follows:
I have 3 tables (urls, textnodes, and titles) with 3 columns each in mysql. My question was, could I create multiple indexes in lucene and would this be necessary? The reason I want to do this is that
I\'m learning Apache Lucene Solr4.0 syntax and functionality and would like to make a minimum number of requests on a single page.
I want to sort a result set by the minimum of several fields. So after reading the functionquery documentation this is what I came up with:
I am looking for a fast in-memory implementation of a generic inverted index. All I need is to store features with weights for a couple million entities and use the inverted index to compute similarit
When i add more than one Fieldable to my Document i get a nullpointer exception(without any exception description) when i try to add the document to the indexwriter.
I want to know when a term is boosted in lucene query ho开发者_运维技巧w does scores change? I mean what is the scoring algorithm of lucene for scoring documents when query has one or more term that b
I\'m using Lucene to index the values that I\'m storing in an object database. I\'m storing a reference (UUID) to the object along with the field names and their corresponding values (Lucene Fields) i
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