Group Recommendations: Survey and Perspectives

The popularity of group recommender systems has increased in the last years. More and more social activity is generated by users over the Web and thus not only domains as TV, music or holidays are used and researched anymore for group recommendation, but also collaborative learning support, digital libraries and other domains seems to be promising for group recommendation. Moreover, principles of group recommenders can be used in order to overcome some single user recommendation shortcomings, such as cold start problem. Numerous group recommenders have been proposed, they differ in application domains which are specific in group characteristics. Today's group recommenders do not include and use the power of social aspects (group structure, social status etc.), which can be extracted and derived from the group. We provide a survey of group recommendation principles for the Web domain and discuss trends and perspectives in this field

Considering temporal aspects in recommender systems: a survey

Under embargo until: 2023-07-04The widespread use of temporal aspects in user modeling indicates their importance, and their consideration showed to be highly effective in various domains related to user modeling, especially in recommender systems. Still, past and ongoing research, spread over several decades, provided multiple ad-hoc solutions, but no common understanding of the issue. There is no standardization and there is often little commonality in considering temporal aspects in different applications. This may ultimately lead to the problem that application developers define ad-hoc solutions for their problems at hand, sometimes missing or neglecting aspects that proved to be effective in similar cases. Therefore, a comprehensive survey of the consideration of temporal aspects in recommender systems is required. In this work, we provide an overview of various time-related aspects, categorize existing research, present a temporal abstraction and point to gaps that require future research. We anticipate this survey will become a reference point for researchers and practitioners alike when considering the potential application of temporal aspects in their personalized applications.acceptedVersio

Factors Shaping the Employment of Military Force from the Perspective of the War in Ukraine

The study presents a meritorious view of the traditional operational factors of space, time and force. On the background of the first and second phases of the War in Ukraine, it examines how the relevant factors shape the use of military force in operations, clarifies their mutual correlation, interference, application connections and also causality. The results of the study demonstrate the necessity of a correct and holistic perception of operational factors for effective deployment and employment of military forces in the contemporary operating environment. The main benefit of the study, applying the heuristic and inventive function of analogy from the open sources of available identified knowledge from the deployment of military forces in the War in Ukraine, is the mediation of model examples of a comprehensive vision of the effects of how operational factors shape the use of military force in contemporary high-intensity warfare operations

News Article Classification Based on a Vector Representation Including Words’ Collocations

In this paper we present a proposal including collocations into the pre-processing of the text mining, which we use for the fast news article recommendation and experiments based on real data from the biggest Slovak newspaper. The news article section can be predicted based on several article’s characteristics as article name, content, keywords etc. We provided experiments aimed at comparison of several approaches and algorithms including expressive vector representation, with considering most popular words collocations obtained from Slovak National Corpus