分类： Java
2013-02-01 09:02:46
NORM: store the index-time boost information. it can be ignored by Index.ANALYZED_NO_NORMS and Index.NOT_ANALYZED_NO_NORMS.
Field.setOmitTermFreqAndPositions(true): skip indexing TF and positions
Term vector: http://blog.chinaunix.net/uid-14368760-id-2817141.html keyed first by doc id, secondarily by term.
