Recommender systems are widely used online to support users in finding relevant information. They can be based on different techniques such as content-based and collaborative filtering. In this paper, we introduce a new way of similarity calculation for item-based collaborative filtering. Thereby we focus on the usage of an object and not on the object’s users as we claim the hypothesis that si...

10 11 Abstract Developing shared understanding is essential to productive collaboration where a 12 product is jointly constructed. This is especially true when the different collaborators’ 13 contributions need to build coherently on one another, as, for example, when making a story 14 together. This study investigated whether encouraging children to engage in discussion 15 though a Guided Reci...

We describe CFW, a computationally effi­ cient algorithm for collaborative filtering that uses posteriors over weights of evidence. In experiments on real data, we show that this method predicts as well or better than other methods in situations where the size of the user query is small. The new approach works particularly well when the user's query con­ tains low frequency (unpopular) items. T...

As the use of recommender systems becomes more consolidated on the Net, an increasing need arises to develop some kind of evaluation framework for collaborative filtering measures and methods which is capable of not only testing the prediction and recommendation results, but also of other purposes which until now were considered secondary, such as novelty in the recommendations and the users' t...

In all industries, competition between business organizations is vital to utilize collaborative logistics for planning, forecasting and efficient customer response to optimize the supply chain. Consequently, numerous business organizations build coalitions among themselves making their partnerships

While personalized feeds and collaborative filtering have become extremely popular on media websites, content personalization has received much less attention. Automatically modifying the textual and multimedia features of an article offers significant opportunities. Doing so has potential benefit for journalists, media sites, and readers. However, personalizing content in a news context poses ...

Multi-player Role-Playing Games form rare examples of interactive, collaborative storytelling systems, especially within the tabletop format. However, despite recent advances in the theory and general knowledge of the field, models of the operation of the storytelling process in multi-player nondigital role-playing games remains relatively unspecific. In this paper, a critical synthesis of the ...

During the execution of large scale construction projects performed by Virtual Organizations (VO), relatively complex technical models have to be exchanged between the VO members. For linking the trade and transfer of these models, a so-called multi-model container format was developed. Considering the different skills and tasks of the involved partners, it is not necessary for them to know all...