Abstract
This year, University ofWaterloo participated in four tracks; Ad Hoc, Book, Entity Ranking, and Link-the-Wiki tracks. In Ad Hoc and Book tracks, we implemented a variation of Okapi BM25F [20, 5, 18, 15] that gave substantial improvements over the baseline BM25 that ranked first in the previous year [12, 13], during the training and in the official Ad Hoc-focused results. In Entity ranking track, we used redundancy techniques [4] for question answering to retrieve entities. In Link-the- Wiki track, we employed topic-oriented PageRank with KL divergence in addition to the baseline described in [11].
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Itakura, K.Y., Clarke, C.L.A. (2010). University of Waterloo at INEX 2009: Ad Hoc, Book, Entity Ranking, and Link-the-Wiki Tracks. In: Geva, S., Kamps, J., Trotman, A. (eds) Focused Retrieval and Evaluation. INEX 2009. Lecture Notes in Computer Science, vol 6203. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-14556-8_33
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