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2016 Jul 24
2
Weighting Schemes: Evaluation results
....0752646 Here, PL2+ indeed does a better job at retrieving relevant documents although by a small margin. I believe this should produce much better results at scale in practical use. At this point, we might want to consider replacing PL2 with PL2+ in Xapian to put it in practical use. 3. LMWeight_Dirplus: 0.100168 and LMWeight_Dir: 0.100168 These results are for LMWeight with smoothing Dir and Dirplus respectively. Interestingly identical results. Ideally, LMWeight_dirplus should perform better and I'm having similar thoughts for it as for BM25+ and BM25 results. Last addtion in weighting sch...