Abstract
Semantic information retrieval is based on calculating similarity between concepts in a query and documents of a corpus. In this regard, similarity between concept pairs is determined by using an ontology or a meta-thesaurus. Although semantic similarities often convey reasonable meaning, there are cases where calculated semantic similarity fails to detect semantic relevancy between concepts. This problem often occurs when concepts in a corpus have statistical dependencies while they are not conceptually similar. In this paper a concept-based pseudo relevance feedback approach is introduced for discovering statistical relations between concepts in an ontology. Proposed approach consists of adding extra concepts to each query based on the concepts in top ranked documents which are rendered as relevant to that query. Results show that using conceptual relevance feedback would increase mean average precision by 19 percent compared to keyword based approaches.
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Jalali, V., Borujerdi, M.R.M. (2009). Concept Based Pseudo Relevance Feedback in Biomedical Field. In: Lee, R., Ishii, N. (eds) Software Engineering, Artificial Intelligence, Networking and Parallel/Distributed Computing. Studies in Computational Intelligence, vol 209. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-01203-7_6
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DOI: https://doi.org/10.1007/978-3-642-01203-7_6
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