I have documents that are marked up with Taxonomy and Ontology terms separately. When I calculate the document similarity, I want to give higher weights to those Taxonomy terms and Ontology terms.
When I index the document, I have defined the Document content, Taxonomy and Ontology terms as Fields for each document like this in my program. *Field ontologyTerm= new Field("fiboterms", fiboTermList[curDocNo], Field.Store.YES, Field.Index.ANALYZED, Field.TermVector.YES);* *Field taxonomyTerm = new Field("taxoterms", taxoTermList[curDocNo], Field.Store.YES, Field.Index.ANALYZED, Field.TermVector.YES);* *Field document = new Field(docNames[curDocNo], strRdElt, Field.TermVector.YES);* I’m using Lucene index .TermFreqVector functions to calculate TFIDF values and, then calculate cosine similarity between two documents using TFIDF values. For give weights to Ontology and Taxonomy terms when calculating the cosine similarity, what I can do is, programmatically multiply the Taxonomy and Ontology term frequencies with defined weight factor before calculating the TFIDF scores. Will this give higher weight to Taxonomy and Ontology terms in document similarity calculation? Are there Lucene functions that can be used to give higher weights to the certain fields when calculating TFIDF values using TermFreqVector? can I just use the setboost() function for this purpose, then how? -- Regards Kasun Perera