Search for dissertations about: "collaborative filtering"

Found 5 swedish dissertations containing the words collaborative filtering.

  2. 1. Algorithmic and Ethical Aspects of Recommender Systems in e-Commerce

    Author : Dimitris Paraschakis; Jan Persson; Malmö universitet; []
    Keywords : recommender systems; e-commerce; recommendation ethics; collaborative filtering; thompson sampling; multi-arm bandits; reinforcement learning;

    Abstract : Recommender systems have become an integral part of virtually every e-commerce application on the web. These systems enable users to quickly discover relevant products, at the same time increasing business value. Over the past decades, recommender systems have been modeled using numerous machine learning techniques. READ MORE

  4. 2. Algorithms and Representations for Personalised Information Access

    Author : Rickard Cöster; Lars Asker; Haym Hirsh; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Computer science; Datavetenskap;

    Abstract : Personalised information access systems use historical feedback data, such as implicit and explicit ratings for textual documents and other items, to better locate the right or relevant information for individual users.Three topics in personalised information access are addressed: learning from relevance feedback and document categorisation by the use of concept-based text representations, the need for scalable and accurate algorithms for collaborative filtering, and the integration of textual and collaborative information access. READ MORE

  5. 3. On weighted egocentric graphs and social group communication

    Author : Juwel Rana; Georg Groh; Luleå tekniska universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Pervasive Mobile Computing; Distribuerade datorsystem;

    Abstract : Electronic communication has a profound impact on our society, where for instance social media now is almost ubiquitously used to share information. This has led to several major challenges, including how to overcome information overload and privacy concerns, how to utilize social context based on multiple data sources from both the virtual and physical worlds, and subsequently how to improve group communication. READ MORE

  6. 4. Non-Gaussian Statistical Modelsand Their Applications

    Author : Zhanyu Ma; Arne Leijon; Cédric Févotte; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Statistical modeling plays an important role in various research areas. It provides away to connect the data with the statistics. Based on the statistical properties of theobserved data, an appropriate model can be chosen that leads to a promising practicalperformance. READ MORE

  7. 5. Dynamic Optimization for Agent-Based Systems and Inverse Optimal Control

    Author : Yibei Li; Xiaoming Hu; Per Enqvist; Yishao Zhou; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Inverse optimal control; formation control; differential game; credit scoring; Mathematics; Matematik;

    Abstract : This dissertation is concerned with three problems within the field of optimization for agent--based systems. Firstly, the inverse optimal control problem is investigated for the single-agent system. Given a dynamic process, the goal is to recover the quadratic cost function from the observation of optimal control sequences. READ MORE