47,228 research outputs found

    Collaborative recommendations with content-based filters for cultural activities via a scalable event distribution platform

    Get PDF
    Nowadays, most people have limited leisure time and the offer of (cultural) activities to spend this time is enormous. Consequently, picking the most appropriate events becomes increasingly difficult for end-users. This complexity of choice reinforces the necessity of filtering systems that assist users in finding and selecting relevant events. Whereas traditional filtering tools enable e.g. the use of keyword-based or filtered searches, innovative recommender systems draw on user ratings, preferences, and metadata describing the events. Existing collaborative recommendation techniques, developed for suggesting web-shop products or audio-visual content, have difficulties with sparse rating data and can not cope at all with event-specific restrictions like availability, time, and location. Moreover, aggregating, enriching, and distributing these events are additional requisites for an optimal communication channel. In this paper, we propose a highly-scalable event recommendation platform which considers event-specific characteristics. Personal suggestions are generated by an advanced collaborative filtering algorithm, which is more robust on sparse data by extending user profiles with presumable future consumptions. The events, which are described using an RDF/OWL representation of the EventsML-G2 standard, are categorized and enriched via smart indexing and open linked data sets. This metadata model enables additional content-based filters, which consider event-specific characteristics, on the recommendation list. The integration of these different functionalities is realized by a scalable and extendable bus architecture. Finally, focus group conversations were organized with external experts, cultural mediators, and potential end-users to evaluate the event distribution platform and investigate the possible added value of recommendations for cultural participation

    Semantic user profiling techniques for personalised multimedia recommendation

    Get PDF
    Due to the explosion of news materials available through broadcast and other channels, there is an increasing need for personalised news video retrieval. In this work, we introduce a semantic-based user modelling technique to capture users’ evolving information needs. Our approach exploits implicit user interaction to capture long-term user interests in a profile. The organised interests are used to retrieve and recommend news stories to the users. In this paper, we exploit the Linked Open Data Cloud to identify similar news stories that match the users’ interest. We evaluate various recommendation parameters by introducing a simulation-based evaluation scheme

    Dominant Search Engines: An Essential Cultural & Political Facility

    Get PDF
    When American lawyers talk about essential facilities, they are usually referring to antitrust doctrine that has required certain platforms to provide access on fair and nondiscriminatory terms to all comers. Some have recently characterized Google as an essential facility. Antitrust law may shape the search engine industry in positive ways. However, scholars and activists must move beyond the crabbed vocabulary of competition policy to develop a richer normative critique of search engine dominance. In this chapter, I sketch a new concept of essential cultural and political facility, which can help policymakers recognize and address situations where a bottleneck has become important enough that special scrutiny is warranted. This scrutiny may not always culminate in regulation. However, it clearly suggests a need for publicly funded alternatives to the concentrated conduits and content providers colonizing the web

    An Approach for Assessment of Electronic Offers

    Get PDF
    Internet and mobile technology enable businesses to invent new business models by applying new forms of organization or offering new products and services. In order to assess these new business models there has to be a methodology that allows identifying advantages that are caused by electronic and mobile commerce. The proposed approach builds upon the theory of informational added values that provides a classification of gains produced by information work. This theory is extended by the definition of categories of technology inherent added values that result in informational added values. These informational added values can be perceived by users of information products and services and therefore be used to assess electronic offers. The relationship between technology inherent and informational added values will be clarified with examples of real business models. Furthermore, a classification of basic business model types will be provided.
    • …
    corecore