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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 Hits 1 – 20 of 30 1 Structure and infrastructure of infectious agent research literature: SARS Kostoff, Ronald N.; Morse, Stephen A.. - : Springer Netherlands, 2010 BASE Show details 2 Assessment of Breadth and Utility of India's Research Literature (2005-2006) Miller, Robert; Kostoff, Ronald N. In: DTIC (2007) BASE Show details 3 Text Mining the Biomedical Literature Kostoff, Ronald N. In: DTIC (2007) BASE Show details 4 Clustering methodologies for identifying country core competencies Kostoff, Ronald N.; del Rio, J. Antonio; Cortes, Héctor D.. - : Sage Publications Ltd, 2007 BASE Show details 5 The Structure and Infrastructure of Chinese Science and Technology Kostoff, Ronald N.; Briggs, Michael B.; Rushenberg, Robert L.... In: DTIC (2006) BASE Show details 6 Assessment of India's Research Literature Kostoff, Ronald N.; Johnson, Dustin; Bowles, Christine A.... In: DTIC (2006) BASE Show details 7 Structure of the Anthrax Research Literature Kostoff, Ronald N.; Morse, Stephen A.; Oncu, Serkan In: DTIC (2006) BASE Show details 8 Structure of the Global Nanoscience and Nanotechnology Research Literature Kostoff, Ronald N.; Koytcheff, Ray; Lau, Clifford G. In: DTIC (2006) BASE Show details 9 The Structure and Infrastructure of the Finnish Research Literature Kostoff, Ronald N.; Tshiteya, Rene; Bowles, Christine A.... In: DTIC (2006) BASE Show details 10 Science and Technology Text Mining: Wireless LANS Kostoff, Ronald N.; Tshiteya, Rene; Stump, Jesse... In: DTIC AND NTIS (2005) BASE Show details 11 The Structure and Infrastructure of the Global Nanotechnology Literature Kostoff, Ronald N.; Stump, Jesse A.; Johnson, Dustin... In: DTIC AND NTIS (2005) BASE Show details 12 The structure and infrastructure of Mexico's science and technology Kostoff, Ronald N.; del Rio, J. Antonio; Cortes, Héctor D.. - : Elsevier Science Inc, 2005 BASE Show details 13 Science and Technology Text Mining: Electric Power Sources Kostoff, Ronald N.; Tshiteya, Rene; Pfeil, Kirstin M.... In: DTIC AND NTIS (2004) BASE Show details 14 Context-Dependent Conflation, Text Filtering and Clustering Kostoff, Ronald N.; Block, Joel A. In: DTIC AND NTIS (2004) Abstract: The presence of trivial words in text databases can impact record or concept (words or phrases) clustering adversely. Additionally, the determination of whether a word or phrase is trivial is context-dependent. The objective of the present paper is to demonstrate a context-dependent trivial word filter to improve clustering quality. Factor analysis was used as a context-dependent trivial word filter for subsequent term clustering. Medline records for Raynaud's Phenomenon were used as the database, and words were extracted from the record abstracts. A factor matrix of these words was generated, and the words that had low factor loadings across all factors were identified and eliminated. The remaining words, which had high factor loading values for at least one factor and therefore were influential in determining the theme of that factor, were input to the clustering algorithm. Both quantitative and qualitative analyses were used to show that factor matrix filtering leads to higher quality clusters and subsequent taxonomies. Additionally, a fractals database obtained from the Science Citation Index was used to demonstrate the value of factor matrices to determine the interchangeability of word variants, and show the context dependency requirements for conflation. (8 figures, approx. 90 refs.) ; The original document contains color images. Keyword: *CLUSTERING; *COMPUTATIONAL LINGUISTICS; *FACTOR ANALYSIS; *FACTOR MATRIX FILTERING; *INFORMATION RETRIEVAL; *MATHEMATICAL FILTERS; *TEXT FILTERING; *TEXT PROCESSING; ALGORITHMS; COMPUTER APPLICATIONS; CONCEPT CLUSTERING; CONFLATION; CONTEXT-DEPENDENT TRIVIAL WORDS; DATA BASES; DEMONSTRATIONS; DOCUMENT CLUSTERING; FACTOR LOADING; FRACTALS; Information Science; Numerical Mathematics; QUALITATIVE ANALYSIS; QUANTITATIVE ANALYSIS; RAYNAUD'S DISEASE; RAYNAUD'S PHENOMENON; RAYNAUD'S SYNDROME; Statistics and Probability; STEMMING; STOP WORD LISTS; TAXONOMY; TRIVIAL WORD FILTERING; WORDS(LANGUAGE) URL: http://www.dtic.mil/docs/citations/ADA426072 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA426072 BASE Hide details 15 Science and Technology Text Mining: Nonlinear Dynamics Kostoff, Ronald N.; Shlesinger, Michael F.; Tshiteya, Rene In: DTIC AND NTIS (2004) BASE Show details 16 How useful are 'key words' in scientific journals? Hartley, James; Kostoff, Ronald N. In: Journal of information science. - London [u.a.] : Sage Publ. 29 (2003) 5, 433-438 BLLDB Show details 17 Science and Technology Text Mining: Electrochemical Power Kostoff, Ronald N.; Tshiteya, Rene; Pfeil, Kirstin M.... In: DTIC AND NTIS (2003) BASE Show details 18 Science and Technology Text Mining: Near-Earth Space Kostoff, Ronald N.; Eberhart, Henry J.; Toothman, Darrell R. In: DTIC (2003) BASE Show details 19 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 20 Science and Technology Text Mining: Citation Mining of Dynamic Granular Systems Kostoff, Ronald N.; Rio, J. A. del; Garcia, Esther O.... In: DTIC AND NTIS (2003) BASE Show details Page: 1 2

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