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Most information retrieval systems and tasks are now embedded in a rich context. Documents no longer exist on their own; they are connected to other documents, they are associated with users and their position in a social network, and they can be mapped onto a variety of ontologies. Similarly, retrieval tasks have become more interactive and are solidly embedded in a user's geospatial, social, and historical context. We conjecture that new breakthroughs in information retrieval will not come<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1145/2093346.2093355">doi:10.1145/2093346.2093355</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/77mxfekktbhqtfhwpldmkovs6m">fatcat:77mxfekktbhqtfhwpldmkovs6m</a> </span>
more »... m smarter algorithms that better exploit existing information sources, but from new retrieval algorithms that can intelligently use and combine new sources of contextual metadata. The goal of the Enriching Information Retrieval workshop at SIGIR 2011 was to explore how new and emerging sources of contextual metadata can be used for improving information retrieval, including ranking, personalization, diversification, and faceted search. In particular, we focused the workshop on three themes: • The identification of novel types and sources of contextual metadata (e.g., new ontologies, usage patterns, locality information, readability, temporal). • The automatic acquisition and distillation of metadata (e.g., via learning or through implicit data). • The design of methods for exploiting new metadata sources in IR tasks. A special focus of the workshop was on metadata and retrieval tasks associated with social networks. The workshop program committee consisted of twenty researchers from across academia and industry, with experience in information retrieval, machine learning, evaluation methodology, natural language processing, recommender systems and social networks. Around 30 people attended the workshop in Beijing. The purpose of this report is to summarize the workshop, in particular to highlight the common themes that arose during our discussions and relate the outcomes of the discussions to future directions for research.
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