One of the main problems of collaborative filtering recommenders is the sparsity of the ratings in the users-items matrix, and its negative effect on the prediction accuracy. This ...
—This paper introduces an integrated modeling and analysis formalism based on colored Petri nets (CPNs) for supply chain configuration and evaluation. The structural changes of d...
Lianfeng Zhang, Xiao You, Jianxin Jiao, Petri Helo
The nonnegative matrix factorization (NMF) has been shown recently to be useful for clustering. Various extensions of NMF have also been proposed. In this paper we present an over...
Recently, the concept of behavioral media using a mobile robot has emerged in tele-robotics, where the mobile robot behaves as a user’s second body or an agent in a remote site....
We give a quick overview of some key issues in (quantitative) call center management: building realistic models, developing efficient tools to simulate these models, finding qui...