Hi there,
I have an issue with the QueryScorer(query) method at the moment and I need
some assistance.
I was indexing my e-book "lucene in action" and based on this index-db I
started to play around with some boolean queries like:
(contents:+term contents:+query)
As a result I'm expecting as a perfect match for the phrase "term query" four
hits.
But when I run my sample to highlight this phrase in the context then I get a
lot more results. It also finds all the matches for "term" and "query"
independently.
I think the problem is the QueryScorer() which softens the former exact boolean
query.
Then I was trying the following:
private static Highlighter GetHits(Query query, Formatter formatter)
{
string filed = "contents"
BooleanQuery termsQuery = new BooleanQuery();
WeightedTerm[] terms = QueryTermExtractor.GetTerms(query, true, field);
foreach (WeightedTerm term in terms)
{
TermQuery termQuery = new TermQuery(new Term(field, term.GetTerm()));
termsQuery.Add(termQuery, BooleanClause.Occur.MUST);
}
// create query scorer based on term queries (field specific)
QueryScorer scorer = new QueryScorer(termsQuery);
Highlighter highlighter = new Highlighter(formatter, scorer);
highlighter.SetTextFragmenter(new SimpleFragmenter(20));
return highlighter;
}
to rewrite the query and set the term attribute from SHOULD to MUST
But the result was the same.
Do you have any example how I can use the QueryScorer() in exactly the same way
as to mimic a BooleanSearch??
thanks in advance
Christian
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
