Recommendation plays an increasingly important role in our daily lives. Recommender systems automatically suggest to a user items that might be of interest to her. Recent studies demonstrate that information from social networks can be exploited to improve accuracy of recommendations. In this paper, we present a survey of Collaborative Filtering(CF) based social recommender systems. We provide ...

Groupware systems let physically dispersed teams collaborate on common tasks over distance and time. A real-time groupware system requires all users to be present at their respective sites at the same time. A non-real-time groupware system, however, lets users work on common tasks at different times. Real-time collaborative editing systems that enable groups of geographically distributed users ...

Collaborative logistics is increasingly emerging as a new opportunity for cost reduction through internal and cross chains coordination. This paper presents different coordination mechanisms to support collaborative logistics. These mechanisms are differentiated by their planning function, their sharing approach and the information, decision and financial flows. Often, the logistics planning is...

Well-informed network participants are a necessity for successful collaboration in business networks. The widespread knowledge of the many aspects of the network is an effective vehicle to promote trust within the network, successfully resolve conflicts, and build a prospering collaboration climate. Despite their natural interest in being well informed about all the different aspects of the net...

For several years, Value Systems have been studied by two distinct scientific disciplines: economy and psycho-sociology. Each discipline developed a different concept of Value System, based on distinct assumptions about value. On one hand, economists assume that value means how much (usually money) a product or service is worth to someone, relative to other things; on the other hand socio-psych...

A Context-Aware Groupware System (CAGS) enables the members of a team to communicate, cooperate and coordinate their activities to achieve a common goal, by providing them tools that are aware of their current execution context and adapt accordingly. CAGS can be found in several domains such as entertainment, particularly Collaborative First-Person-Shooter (FPS) video games. In CAGS, the means ...

This paper refers to the project GPM-SME – FP6-005857, included within the 6th Framework Programme of the European Commission, in its CRAFT Programme. The goal of this document is to present the main concepts of Global Performance Management and how the GPM-SME consortium pursues to develop a framework to improve the competitive capability of companies and their network visibility, specially de...

Organizations today make radical use of the IT resources to sustain or better their existing competitive position. One such initiative is forming alliances on a shared IT backbone with partners of their value chain. We term these alliances the collaborative organizational structures (COS). Regardless of the nature of engagement with IT resources, organizations will require unique competencies t...

Collaborative reflection helps groups to learn from work experiences for future work. Although its potential has been recognized and initial work is available, insights on how tools support people in collaborative reflection at work are scarce. We present an approach to analyze collaborative reflection support based on content analysis and an initial study in which it was applied to four cases ...

In this paper we explore how two existing collaborative filtering algorithms can be enhanced by the calculation of demographic correlations among the members of user or item neighborhoods. Experiments are executed to evaluate the performance of the proposed approach. Their results show that demographic data can, in some cases, lead to the generation of more accurate predictions.