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1. (WO2016058485) METHODS AND DEVICES FOR CALCULATING RANKING SCORE AND CREATING MODEL, AND PRODUCT RECOMMENDATION SYSTEM

Pub. No.:    WO/2016/058485    International Application No.:    PCT/CN2015/091216
Publication Date: Fri Apr 22 01:59:59 CEST 2016 International Filing Date: Thu Oct 01 01:59:59 CEST 2015
IPC: G06F 17/30
Applicants: ALIBABA GROUP HOLDING LIMITED
阿里巴巴集团控股有限公司
LIU, Rui
刘睿
LV, Tao
吕韬
SUN, Chao
孙超
YANG, Zhixiong
杨志雄
Inventors: LIU, Rui
刘睿
LV, Tao
吕韬
SUN, Chao
孙超
YANG, Zhixiong
杨志雄
Title: METHODS AND DEVICES FOR CALCULATING RANKING SCORE AND CREATING MODEL, AND PRODUCT RECOMMENDATION SYSTEM
Abstract:
A method and device for calculating a ranking score of an object to be evaluated, a method and device for creating a ranking score calculation model, and a product recommendation system. The method for calculating a ranking score of an object to be evaluated comprises: obtaining for an object to be evaluated initial evaluation score data and additional ranking factor values, as well as actual behavior data extracted from past behavior data in an actual interaction behavior system (101); minimizing to an optimal target the difference between the actual ranking distribution obtained on the basis of actual behavior data and the predicted ranking distribution obtained on the basis of a pre-set ranking score calculation model, and solving for the weight coefficients of additional ranking factors in the ranking score calculation model (102); using said ranking score calculation model to calculate the ranking score of the object (103). In the present invention, additional ranking factors may be quickly and conveniently factored into calculations, and ranking scores resulting from said calculations can objectively and accurately predict the ranking of an object.