“Optimize the parameter in different data source”版本间的差异
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==Definition== | ==Definition== | ||
| − | * [file:http://cslt.riit.tsinghua.edu.cn/mediawiki/images/5/59/11.png] | + | * [[file:http://cslt.riit.tsinghua.edu.cn/mediawiki/images/5/59/11.png]] |
==boost some specific field in lucene== | ==boost some specific field in lucene== | ||
2014年11月21日 (五) 02:36的版本
method
Definition
boost some specific field in lucene
- Here is how you can do that[1]
Query titleQuery, viewsQuery; titleQuery.setBoost(0.8); viewsQuery.setBoost(0.2); BooleanQuery query = new BooleanQuery(); query.add(titleQuery, Occur.MUST); // or Occur.SHOULD if this clause is optional query.add(viewsQuery, Occur.SHOULD); // or Occur.MUST if this clause is required // use query to search documents
The score will be proportional to 0.8*score(titleQuery) + 0.2*score(viewsQuery) (to a multiplicative constant). To leverage your views field, you will probably need to use a ValueSourceQuery
