Hi,
I tried to index bigrams from a documhe system gave and the system gave me
the following output with the frequencies of the bigrams(output 1):
array size:15
array terms are:{contents: /1, assist librarian/1, assist manjula/2, assist
sabaragamuwa/1, fine manjula/1, librari manjula/1, librarian
sabaragamuwa/1, main librari/2, manjula assist/4, manjula fine/1, manjula
name/1, name manjula/1, sabaragamuwa univers/3, univers main/2, univers
sabaragamuwa/1}
For this I used the follwing code in the createIndex() class:
ShingleAnalyzerWrapper sw=*new *ShingleAnalyzerWrapper(analyzer,2);
sw.setOutputUnigrams(*false*);
Then I tried search the indexed bigrams of the same document using the
following code in searchIndex()class:
IndexReader indexReader = IndexReader.open(directory);
IndexSearcher indexSearcher = *new* IndexSearcher(indexReader);
Analyzer analyzer = *new* WhitespaceAnalyzer();
QueryParser queryParser = *new* QueryParser(*FIELD_CONTENTS*, analyzer);
Query query = queryParser.parse(terms[pos[freqs.length-q1]]);
System.*out*.println("Query: " +query);
Hits hits = indexSearcher.search(query);
System.*out*.println("Number of hits: " + hits.length());
For this, the system gave me the following output (output2):
Query: contents:manjula contents:assist
Number of hits: 0
Query: contents:sabaragamuwa contents:univers
Number of hits: 0
Query: contents:univers contents:main
Number of hits: 0
Query: contents:main contents:librari
Number of hits: 0
If someone can please explain me;
(1)why 'contents: /1' is included in the array as an array element? (output
1)
(2) why the system return me the query as 'contents:manjula
contents:assist' instead of 'manjula assist'? (output 2)
(3) why the number of hits given as 0 instead of their frequencies? (output
2)
I highly appreciate your kind reply.
Manjula.
