...Jiangmei Chen; Wende Zhang; Qishan Zhang Purpose The purpose of the paper is to improve the rating prediction accuracy in recommender systems (RSs) by metric learning (ML) method. The similarity metric of user and item is calculated with gray relational analysis. Design/methodology/approach...

... effectively improves the stability of the classification decision model based on sample information. Gray relational analysis Interval gray number Information diffusion Brownfield redevelopment Case-based classification National Office for Philosophy and Social Sciences 10.13039...

... as a competitive advantage for internationalization. Design/methodology/approach From a resource-based view (RBV), 35 different factors grouped into four categories were identified and presented to 24 companies. The data were analyzed through a gray relational analysis to establish all factors’ order...