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All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year Sort by creator [A → Z]' creator [Z → A]' publishing year ↑ (asc)' publishing year ↓ (desc)' title [A → Z]' title [Z → A]' Simple Search Hits 1 – 2 of 2 1 Efficient in-memory top-k document retrieval Matthias Petri; Falk Scholer In: http://goanna.cs.rmit.edu.au/~e76763/publications/cps12-sigir.pdf (2012) Abstract: For over forty years the dominant data structure for ranked document retrieval has been the inverted index. Inverted indexes are effective for a variety of document retrieval tasks, and particularly efficient for large data collection scenarios that require disk access and storage. However, many efficiency-bound search tasks can now easily be supported entirely in-memory as a result of recent hardware advances. In this paper we present a hybrid algorithmic framework for inmemory bag-of-words ranked document retrieval using a self-index derived from the FM-Index, wavelet tree, and the compressed suffix tree data structures, and evaluate the various algorithmic trade-offs for performing efficient queries entirely in-memory. We compare our approach with two classic approaches to bag-of-words queries using inverted indexes, term-at-a-time (TAAT) and document-at-atime (DAAT) query processing. We show that our framework is competitive with state-of-the-art indexing structures, and describe new capabilities provided by our algorithms that can be leveraged by future systems to improve effectiveness and efficiency for a variety of fundamental search operations. Keyword: Data Storage Representations; Experimentation; I.7.3 [Document and Text Processing; Measurement; Performance; query formulation; retrieval models; search process; Text Compression; Text Processing—index generation Keywords Text Indexing URL: http://goanna.cs.rmit.edu.au/~e76763/publications/cps12-sigir.pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.415.5098 BASE Hide details 2 Language independent ranked retrieval with NeWT Michiko Yasukawa; Falk Scholer In: http://goanna.cs.rmit.edu.au/~e76763/publications/cys11-adcs.pdf (2011) BASE Show details

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