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    Computer Science, Universidad Autonoma de Madrid, Madrid

    Contextual Information Retrieval based on Algorithmic Information Theory and Statistical Outlier Detection

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    The main contribution of this paper is to design an Information Retrieval (IR) technique based on Algorithmic Information Theory (using the Normalized Compression Distance- NCD), statistical techniques (outliers), and novel organization of data base structure. The paper shows how they can be integrated to retrieve information from generic databases using long (text-based) queries. Two important problems are analyzed in the paper. On the one hand, how to detect "false positives" when the distance among the documents is very low and there is actual similarity. On the other hand, we propose a way to structure a document database which similarities distance estimation depends on the length of the selected text. Finally, the experimental evaluations that have been carried out to study previous problems are shown.

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    Description

    Title : Contextual Information Retrieval based on Algorithmic Information Theory and Statistical Outlier Detection
    Author(s) : Rafael Martinez, Manuel Cebrian, Francisco De Borja Rodriguez, David Camacho
    Abstract : The main contribution of this paper is to design an Information Retrieval (IR) technique based on Algorithmic Information Theory (using the Normalized Compression Distance- NCD), statistical techniques (outliers), and novel organization of data base structure. The paper shows how they can be integrated to retrieve information from generic databases using long (text-based) queries. Two important problems are analyzed in the paper. On the one hand, how to detect "false positives" when the distance among the documents is very low and there is actual similarity. On the other hand, we propose a way to structure a document database which similarities distance estimation depends on the length of the selected text. Finally, the experimental evaluations that have been carried out to study previous problems are shown.
    Subject : unspecified
    Area : Other
    Language : English
    Year : 2007

    Affiliations Computer Science, Universidad Autonoma de Madrid, Madrid
    Journal : 07114388
    Pages : 6
    Url : http://arxiv.org/abs/0711.4388

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    David's Peer Evaluation activity

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