search for: doclengh

...found some data needed for BM25 in Xapian are not existed in Lucene: 1. doclength_lower_bound?doclength_upper_bound 2. wdf_lower_bound?wdf_uppper_bound 3. total_length 4. doclength(for each document) 1-3 are statistics data, can be caculated when doing copydatabase, and store them in somewhere. But doclengh is hard to do this way. 1. some other data instead of doclength? 2. Xapian support other rank algorithm which does not need doclength? Is there some suggestions to solve this problem? And the demo patch is here: https://github.com/white127/xapian-patch/blob/master/xapian_lucene_demo.patch Regard...