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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 Page: 1 2 3 4 5 6 Hits 1 – 20 of 104 1 An Annotation Framework for Dense Event Ordering Cassidy, Taylor; McDowell, Bill; Chambers, Nathanel... In: DTIC (2014) BASE Show details 2 A Prototype of Multilevel Data Integration in the MYSEA Testbed Portner, Andrew D. In: DTIC (2007) BASE Show details 3 Science and Technology Text Mining: Wireless LANS Kostoff, Ronald N.; Tshiteya, Rene; Stump, Jesse... In: DTIC AND NTIS (2005) BASE Show details 4 Science and Technology Text Mining: Electric Power Sources Kostoff, Ronald N.; Tshiteya, Rene; Pfeil, Kirstin M.... In: DTIC AND NTIS (2004) BASE Show details 5 Science and Technology Text Mining: Nonlinear Dynamics Kostoff, Ronald N.; Shlesinger, Michael F.; Tshiteya, Rene In: DTIC AND NTIS (2004) BASE Show details 6 Implications of Multilingual Interoperability of Speech Technology for Military Use (Les implications de l'interoperabilite multilingue des technologies vocales pour applications militaires) (CD-ROM) In: DTIC (2004) BASE Show details 7 A Categorial Variation Database for English Habash, Nizar; Dorr, Bonnie In: DTIC (2003) BASE Show details 8 Spatio-Temporal Data Access for Information-Based Decision Making Ladner, Roy V.; Warner, Elizabeth G.; Petry, Frederick E. In: DTIC AND NTIS (2003) BASE Show details 9 Science and Technology Text Mining: Electrochemical Power Kostoff, Ronald N.; Tshiteya, Rene; Pfeil, Kirstin M.... In: DTIC AND NTIS (2003) BASE Show details 10 Science and Technology Text Mining: Near-Earth Space Kostoff, Ronald N.; Eberhart, Henry J.; Toothman, Darrell R. In: DTIC (2003) BASE Show details 11 Macromolecule Mass Spectrometry: Citation Mining of User Documents Kostoff, Ronald N.; Bedford, Clifford D.; Rio, Jesus A. del... In: DTIC AND NTIS (2003) BASE Show details 12 Science and Technology Text Mining: Comparative Analysis of the Research Impact Assessment Literature and the Journal of the American Chemical Society Kostoff, Ronald N.; Eberhart, Henry J.; Toothman, Darrel R.... In: DTIC AND NTIS (2003) BASE Show details 13 Dialogue Management for an Automated Multilingual Call Center Hardy, Hilda; Strzalkowski, Tomek; Wu, Min In: DTIC (2003) BASE Show details 14 Feasibility of Creating a Comprehensive Real Property Database for Colombia Demarest, Geoffrey B. In: DTIC AND NTIS (2002) BASE Show details 15 Mapping Lexical Entries in a Verbs Database to WordNet Senses Green, Rebecca; Pearl, Lisa; Dorr, Bonnie J. In: DTIC (2001) BASE Show details 16 Mapping WorldNet Senses to a Lexical Database of Verbs Green, Rebecca; Pearl, Lisa; Dorr, Bonnie J. In: DTIC (2001) BASE Show details 17 Advanced Search Technologies for Unfamiliar Metadata Gey, Fredric C.; Chen, Hui-Min; Norgard, Barbara... In: DTIC (2001) BASE Show details 18 Building Standardized 3D Face Data Base for Face Recognition Applications Vetter, Thomas; Blanz, Volker In: DTIC AND NTIS (2001) BASE Show details 19 Databases for Assessment of Military Speech Technology Equipment. (les Bases de donnees pour l'evatuation des equipements de technologie vocale militaire) South, Allan In: DTIC (2000) BASE Show details 20 Improving Efficiency of Indexing by Using a Hierarchical Merge Approach Du, Aiqun; Callan, Jamie In: DTIC (1998) Abstract: As electronic collections become larger and more numerous, systems capable of working with very large collections will be more and more in demand. On the other hand, computer main memory is relatively limited and constrained compared to the amount of data in a large collection. The requirement for larger memory while building big databases can sometimes make this resource a bottleneck for an information indexing system. INQUERY is a state-of-the-art, widely used, full-text information retrieval system. The INQUERY document indexing system consists of two main operations: parsing and merging. The subsystem responsible for parsing is called the Parser. It creates partial inverted lists by scanning, lexically analyzing, and inverting documents. A partial inverted list contains document entries for a subset of the documents in the collection. It must be combined with other partial inverted lists for the same term to create a final inverted list for the document collection. The Parser buffers partial inverted lists in main memory and flushes them to intermediate files when the buffer is full. The subsystem responsible for merging is called the Merger. After all of the documents have been parsed, the Merger combines the intermediate files to produce the final inverted lists for the collection. The aim of this project is to solve the efficiency and scalability problem of the Merger for the INQUERY indexing system. The speed performance of the old Merger (merge_btl) degrades significantly when used in building big databases under tight memory space limitations. The authors have found a better solution by using a hierarchical merge approach. Timing tests on the new Merger indicates that merge time can be significantly reduced. Hierarchical merge nicely solves the problem of scalability and greatly improves the efficiency of building very large databases for information retrieval systems. ; Sponsored in part by the National Science Foundation, Library of Congress, and Department of Commerce under cooperative agreement no. EEC-9209623. Keyword: *DATA BASES; *DOCUMENT INDEXING SYSTEMS; *DOCUMENTS; *EXPERT SYSTEMS; *FULL-TEXT DATABASES; *INFORMATION RETRIEVAL; *MACHINE AIDED INDEXING; *MERGE TIME REDUCTION; *QUICK REACTION; Cybernetics; EFFICIENCY; EXPERIMENTAL DATA; FULL-TEXT RETRIEVAL; HIERARCHICAL MERGE APPROACH; HIERARCHIES; INDEX TERMS; Information Science; INFORMATION SYSTEMS; INVERTED LISTS; Linguistics; MERGING; PARSERS; SCALABILITY URL: http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA478134 http://www.dtic.mil/docs/citations/ADA478134 BASE Hide details Page: 1 2 3 4 5 6

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