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...3. The implemented fixed length encoding uses 4 bytes as fixed length. This is not optimal and can be further optimized in PFD. 4. The program generates uniform random doc id gap and doc len to make posting list. *You can access the code via my github: https://github.com/zwxxx/pfd_simple_test* -- Weixian Zhou Department of Computer Science and Engineering University at Buffalo, SUNY -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.xapian.org/pipermail/xapian-devel/attachments/20120419/72da0ab2/attachment.html> -------------- next part -------------...

Hi Xapianers: My name is Weixian Zhou, Computer Science student of University at Buffalo, State University of New York. I am interested in the project of posting list encoding improvements and weighting schemes. I have some questions toward them. 1) After read the comments in brass_postlist.cc, I am still not very clear about the...

...e the query is the most difficult. Here?s some idea. a. documents contain more consecutive matching words rank higher. b. different words have different weight (e.g., tf-idf), documents with bigger weight rank higher. c. use k-gram to divide long query and limit the query times. Thank you. -- Weixian Zhou Department of Computer Science and Engineering University at Buffalo, SUNY -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.xapian.org/pipermail/xapian-devel/attachments/20120401/32fdeaff/attachment.html>

...I fixed a bug in brass_database.cc. The bug is: *FIXME: this should be done by checking memory usage, not the number of* *changes. We could also look at the amount of data the inverter object* *currently holds.* I also modified the simpleindex.cc so that it now supports batch files indexing. -- Weixian Zhou Department of Computer Science and Engineering University at Buffalo, SUNY -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.xapian.org/pipermail/xapian-devel/attachments/20120414/689f53a9/attachment.html> -------------- next part -------------...