Börkur Sigurbjörnsson

Research Projects

My first research projects at the University of Amsterdam were on information retrieval, mostly on XML retrieval and multilingual retrieval. At Yahoo! I studied mostly photo tagging and multimedia browsing.

  • Photo tagging

    While at Yahoo! Research I was involved in various projects on analyzing, extending and utilizing tagging of Flickr photos. We analyzed what type of tags users applied to their photos and devised a method for classifying those tags into semantic categories. We developed two prototypes, one for tag recommendation and and one for tag based…

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  • Point of Interest Exploration with Yahoo! Image Search

    One of my most fruitful project while working at Yahoo! Research was a collaboration with the Yahoo! Image Search team. We built system for extracting and ranking points of interest for towns, countries and regions. The points of interest were extracted from Wikipedia, Yahoo! GeoPlanet and Yahoo! Travel. The ranking was based on co-occurrence statistics…

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  • Focused Information Access

    The main research topic during my PhD research was XML Element Retrieval [1]. I took a corpus of scientific articles in XML format and built a search engine on top of it to run experiments. For a given user query, the task was to go below the document level and return the XML elements that…

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