document length in lucene 4.0

Question

as I\'ve read the documentation of the lucene 4.0, now this library stores some statistics as in order to compute different scoring models, one of them bm25. Is there a way, bes

Answer 1

You can store whatever you want from FieldInvertState into the 'norm', and it doesn't have to be a 8 bit float either.

The default is a lossy storage of the length, if you want the actual exact length, maybe you choose to use a short (16bits) per document or something else instead.

See Similarity.computeNorm