title: A new method for E-government procurement using collaborative filtering and Bayesian approach.
abstract: Nowadays, as the Internet services increase faster than ever before, government systems are reinvented as E-government services. Therefore, government procurement sectors have to face challenges brought by the explosion of service information. This paper presents a novel method for E-government procurement (eGP) to search for the optimal procurement scheme (OPS). Item-based collaborative filtering and Bayesian approach are used to evaluate and select the candidate services to get the top-M recommendations such that the involved computation load can be alleviated. A trapezoidal fuzzy number similarity algorithm is applied to support the item-based collaborative filtering and Bayesian approach, since some of the services' attributes can be hardly expressed as certain and static values but only be easily represented as fuzzy values. A prototype system is built and validated with an illustrative example from eGP to confirm the feasibility of our approach.
authors.affiliation: School of Information, Zhejiang University of Finance and Economics, Hangzhou 310000, China.
authors.forename: Shuai
authors.initials: S
authors.lastname: Zhang
authors.affiliation: School of Information, Zhejiang University of Finance and Economics, Hangzhou 310000, China.
authors.forename: Chengyu
authors.initials: C
authors.lastname: Xi
authors.affiliation: School of Information, Zhejiang University of Finance and Economics, Hangzhou 310000, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Wang
authors.affiliation: School of Information, Zhejiang University of Finance and Economics, Hangzhou 310000, China.
authors.forename: Wenyu
authors.initials: W
authors.lastname: Zhang
authors.affiliation: School of Information, Zhejiang University of Finance and Economics, Hangzhou 310000, China.
authors.forename: Yanhong
authors.initials: Y
authors.lastname: Chen
mesh_terms: D000465:Algorithms; D001499:Bayes Theorem; D003196:Computer Graphics; D003198:Computer Simulation; D003199:Computer Systems; D003661:Decision Support Techniques; D004867:Equipment Design; D005376:Financial Management; D017143:Fuzzy Logic; D006076:Government; D020407:Internet; D012984:Software; D014584:User-Computer Interface