search for: xapian_leaning

...>You may find that's faster because it'll mean sorting by doubles instead >of strings. We realise our score function using PostingSource instead of using KeyMaker, we reference your python example and source code of xapian, the simple demo is here. https://github.com/xiangqianzsh/xapian_leaning/blob/master/postingsource/ExternalWeightPostingSource.h But we found that using PostingSource is more slower than KeyMaker. I think the reason maybe: We only use one Xapian::Query of PostingSource and the upper bound of our get_weight() can not work on a single PostingSource. So some optimizing...

On Tue, Jan 23, 2018 at 12:55:31AM +0800, 张少华 wrote: > We realise our score function using PostingSource instead of using > KeyMaker, we reference your python example and source code of xapian, > the simple demo is here. > https://github.com/xiangqianzsh/xapian_leaning/blob/master/postingsource/ExternalWeightPostingSource.h I'd just put the get_weight() and get_maxweight() implementations into your ExternalWeightPostingSource class - the WeightSource class doesn't seem to serve a useful purpose and just adds virtual method call overheads (and those can a...

...ctQuery() { Xapian::Query black_list("BLt1"); return std::make_shared<Xapian::Query>(Xapian::Query::OP_AND_NOT, Xapian::Query::MatchAll, black_list); } I have wrote a demo to reproduce our problems, you can click this link for the detail. https://github.com/xiangqianzsh/xapian_leaning/tree/master/matchall_coredump How we solve this problems?

HI, all, I am a user of Xapian, and now I have a problem in using it. After using boolean terms to get some candidates of documents (still too much), we want sorted them by self-defined function which is used in Xapian::KeyMaker->operator(). But how can I get the serialise score in Xapian::MSetIterator object. c++ code likes this: class SortKeyMaker : public Xapian::KeyMaker { std::string

Hi, I have read the concurrency webpage from the Xapian documentation: http://getting-started-with-xapian.readthedocs.io/en/latest/concepts/concurrency.html But it is still not clear to me how to ensure thread-safety when using libxapian (C++ API). Usually when doing multi-threading many threads can read the same variable concurrently without locking provided none of the threads modifies the