search for: externalweightpostingsourc

...se 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 don't work, but waste time oppositely. How do yo...

...n 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 add up, unless the compiler can devirtualise the calls...

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