nordlys.logic.fusion.late_fusion_scorer module¶

Late Fusion Scorer¶

Class for late fusion scorer (i.e., document-centric model).

Authors:	Shuo Zhang, Krisztian Balog, Dario Garigliotti

class nordlys.logic.fusion.late_fusion_scorer.LateFusionScorer(index_name, retr_model, retr_params, num_docs=None, field='content', run_id='fusion', num_objs=100, assoc_mode=1, assoc_file=None)[source]¶

Bases: nordlys.logic.fusion.fusion_scorer.FusionScorer

Parameters:

index_name – name of index
assoc_file – document-object association file
assoc_mode – document-object weight mode, uniform or binary
retr_model – the retrieval model; valid values: “lm”, “bm25”
retr_params – config including smoothing method and parameter
num_objs – the number of ranked objects for a query
assoc_mode – the fusion weights, which could be binary or uniform
assoc_file – object-doc association file

score_query(query, assoc_fun=None)[source]¶

Scores a given query.

Parameters:	query – query string.
Returns:	a RetrievalResults instance.
Func assoc_fun:	function to return a list of docs for an obeject