This paper considers the information that can be captured about users and groups from a collaborative filtering data set with a view to creating user models and group models. The approach outlined defines a number of user and group features which are represented using a graph model where links exist between users and items, between users and users, and between items and items. The main focus of...

The evolution of the global economy can be characterized through ever shorter life cycles for products and services while, at the same time, development costs increase and the time to bring a new idea into the market reduces. Collaboration has introduced itself as a promising approach to address various challenges enterprises are faced with in such a context. The paper presents a number of obse...

In teamwork when a user and an agent are working together on a joint task it may be important to share information in order to determine the appropriate course of action. However, communication between agents and users can constitute costly user interruptions. One of the most important issue concerning the initiation of information sharing in teamwork is the ability to accurately estimate the c...

A brief review of the paper, “Collaborative Filtering for Implicit Feedback Datasets” by Y. Hu, Y. Koren and C. Volinsky [1]. A Bayesian interpretation of the method described is developed that makes the some parameters easier to interpret.

This paper harnesses collaborative annotations by students as learning feedback on online formative assessments to improve the learning achievements of students. Through the developed Web platform, students can conduct formative assessments, collaboratively annotate, and review historical records in a convenient way, while teachers can generate formative assessments, manage collaborative annota...

Collaboration provides numerous possibilities for realisation of active learning/teaching concepts in e-learning. For this reason it is recomendable to determine the optimal way in which to develop collaborative activities, with the possibility of adapting the appropriate modules’ use in accordance with learners’ characteristics. The paper presents a description of a behaviour pattern analysis,...

In recent years, security solutions have increasingly focused on actively predicting future attacks. Since prediction accuracy can improve with more information about the attackers, sharing securityrelevant data among organizations is often being advocated. However, collaborative security approaches are rarely implemented due to related trust, privacy, and liability concerns. In this paper, we ...