-
Hu, D.; Kaza, S.; Chen, H.: Identifying significant facilitators of dark network evolution (2009)
0.02
0.022237131 = product of:
0.044474263 = sum of:
0.044474263 = sum of:
0.009150138 = weight(_text_:d in 2753) [ClassicSimilarity], result of:
0.009150138 = score(doc=2753,freq=2.0), product of:
0.0871823 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.045888513 = queryNorm
0.104954086 = fieldWeight in 2753, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.0390625 = fieldNorm(doc=2753)
0.004237824 = weight(_text_:s in 2753) [ClassicSimilarity], result of:
0.004237824 = score(doc=2753,freq=4.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = queryNorm
0.08494043 = fieldWeight in 2753, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0390625 = fieldNorm(doc=2753)
0.0310863 = weight(_text_:22 in 2753) [ClassicSimilarity], result of:
0.0310863 = score(doc=2753,freq=2.0), product of:
0.16069375 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045888513 = queryNorm
0.19345059 = fieldWeight in 2753, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=2753)
0.5 = coord(1/2)
- Date
- 22. 3.2009 18:50:30
- Source
- Journal of the American Society for Information Science and Technology. 60(2009) no.4, S.655-665
-
Chung, W.; Chen, H.: Browsing the underdeveloped Web : an experiment on the Arabic Medical Web Directory (2009)
0.01
0.013633157 = product of:
0.027266314 = sum of:
0.027266314 = product of:
0.04089947 = sum of:
0.0035959128 = weight(_text_:s in 2733) [ClassicSimilarity], result of:
0.0035959128 = score(doc=2733,freq=2.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = queryNorm
0.072074346 = fieldWeight in 2733, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046875 = fieldNorm(doc=2733)
0.03730356 = weight(_text_:22 in 2733) [ClassicSimilarity], result of:
0.03730356 = score(doc=2733,freq=2.0), product of:
0.16069375 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045888513 = queryNorm
0.23214069 = fieldWeight in 2733, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046875 = fieldNorm(doc=2733)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 22. 3.2009 17:57:50
- Source
- Journal of the American Society for Information Science and Technology. 60(2009) no.3, S.595-607
-
Carmel, E.; Crawford, S.; Chen, H.: Browsing in hypertext : a cognitive study (1992)
0.01
0.011774708 = product of:
0.023549415 = sum of:
0.023549415 = product of:
0.035324123 = sum of:
0.004237824 = weight(_text_:s in 7469) [ClassicSimilarity], result of:
0.004237824 = score(doc=7469,freq=4.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = queryNorm
0.08494043 = fieldWeight in 7469, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0390625 = fieldNorm(doc=7469)
0.0310863 = weight(_text_:22 in 7469) [ClassicSimilarity], result of:
0.0310863 = score(doc=7469,freq=2.0), product of:
0.16069375 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045888513 = queryNorm
0.19345059 = fieldWeight in 7469, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=7469)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Source
- IEEE transactions on systems, man and cybernetics. 22(1992) no.5, S.865-884
-
Leroy, G.; Chen, H.: Genescene: an ontology-enhanced integration of linguistic and co-occurrence based relations in biomedical texts (2005)
0.01
0.011360965 = product of:
0.02272193 = sum of:
0.02272193 = product of:
0.034082893 = sum of:
0.0029965942 = weight(_text_:s in 5259) [ClassicSimilarity], result of:
0.0029965942 = score(doc=5259,freq=2.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = queryNorm
0.060061958 = fieldWeight in 5259, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0390625 = fieldNorm(doc=5259)
0.0310863 = weight(_text_:22 in 5259) [ClassicSimilarity], result of:
0.0310863 = score(doc=5259,freq=2.0), product of:
0.16069375 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045888513 = queryNorm
0.19345059 = fieldWeight in 5259, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=5259)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 22. 7.2006 14:26:01
- Source
- Journal of the American Society for Information Science and Technology. 56(2005) no.5, S.457-468
-
Zheng, R.; Li, J.; Chen, H.; Huang, Z.: ¬A framework for authorship identification of online messages : writing-style features and classification techniques (2006)
0.01
0.011360965 = product of:
0.02272193 = sum of:
0.02272193 = product of:
0.034082893 = sum of:
0.0029965942 = weight(_text_:s in 5276) [ClassicSimilarity], result of:
0.0029965942 = score(doc=5276,freq=2.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = queryNorm
0.060061958 = fieldWeight in 5276, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0390625 = fieldNorm(doc=5276)
0.0310863 = weight(_text_:22 in 5276) [ClassicSimilarity], result of:
0.0310863 = score(doc=5276,freq=2.0), product of:
0.16069375 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045888513 = queryNorm
0.19345059 = fieldWeight in 5276, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=5276)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 22. 7.2006 16:14:37
- Source
- Journal of the American Society for Information Science and Technology. 57(2006) no.3, S.378-393
-
Chen, H.: Semantic research for digital libraries (1999)
0.00
0.004858693 = product of:
0.009717386 = sum of:
0.009717386 = product of:
0.014576078 = sum of:
0.010980166 = weight(_text_:d in 1247) [ClassicSimilarity], result of:
0.010980166 = score(doc=1247,freq=2.0), product of:
0.0871823 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.045888513 = queryNorm
0.1259449 = fieldWeight in 1247, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.046875 = fieldNorm(doc=1247)
0.0035959128 = weight(_text_:s in 1247) [ClassicSimilarity], result of:
0.0035959128 = score(doc=1247,freq=2.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = queryNorm
0.072074346 = fieldWeight in 1247, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046875 = fieldNorm(doc=1247)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Source
- D-Lib magazine. 5(1999) no.10, xx S
-
Chen, H.: Intelligence and security informatics : Introduction to the special topic issue (2005)
0.00
0.00439719 = product of:
0.00879438 = sum of:
0.00879438 = product of:
0.01319157 = sum of:
0.011093954 = weight(_text_:d in 3232) [ClassicSimilarity], result of:
0.011093954 = score(doc=3232,freq=6.0), product of:
0.0871823 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.045888513 = queryNorm
0.12725008 = fieldWeight in 3232, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.02734375 = fieldNorm(doc=3232)
0.002097616 = weight(_text_:s in 3232) [ClassicSimilarity], result of:
0.002097616 = score(doc=3232,freq=2.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = queryNorm
0.04204337 = fieldWeight in 3232, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.02734375 = fieldNorm(doc=3232)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Abstract
- Making the Nation Safer: The Role of Science and Technology in Countering Terrorism The commitment of the scientific, engineering, and health communities to helping the United States and the world respond to security challenges became evident after September 11, 2001. The U.S. National Research Council's report an "Making the Nation Safer: The Role of Science and Technology in Countering Terrorism," (National Research Council, 2002, p. 1) explains the context of such a new commitment: Terrorism is a serious threat to the Security of the United States and indeed the world. The vulnerability of societies to terrorist attacks results in part from the proliferation of chemical, biological, and nuclear weapons of mass destruction, but it also is a consequence of the highly efficient and interconnected systems that we rely an for key services such as transportation, information, energy, and health care. The efficient functioning of these systems reflects great technological achievements of the past century, but interconnectedness within and across systems also means that infrastructures are vulnerable to local disruptions, which could lead to widespread or catastrophic failures. As terrorists seek to exploit these vulnerabilities, it is fitting that we harness the nation's exceptional scientific and technological capabilities to Counter terrorist threats. A committee of 24 of the leading scientific, engineering, medical, and policy experts in the United States conducted the study described in the report. Eight panels were separately appointed and asked to provide input to the committee. The panels included: (a) biological sciences, (b) chemical issues, (c) nuclear and radiological issues, (d) information technology, (e) transportation, (f) energy facilities, Cities, and fixed infrastructure, (g) behavioral, social, and institutional issues, and (h) systems analysis and systems engineering. The focus of the committee's work was to make the nation safer from emerging terrorist threats that sought to inflict catastrophic damage an the nation's people, its infrastructure, or its economy. The committee considered nine areas, each of which is discussed in a separate chapter in the report: nuclear and radiological materials, human and agricultural health systems, toxic chemicals and explosive materials, information technology, energy systems, transportation systems, Cities and fixed infrastructure, the response of people to terrorism, and complex and interdependent systems. The chapter an information technology (IT) is particularly relevant to this special issue. The report recommends that "a strategic long-term research and development agenda should be established to address three primary counterterrorismrelated areas in IT: information and network security, the IT needs of emergency responders, and information fusion and management" (National Research Council, 2002, pp. 11 -12). The MD in information and network security should include approaches and architectures for prevention, identification, and containment of cyber-intrusions and recovery from them. The R&D to address IT needs of emergency responders should include ensuring interoperability, maintaining and expanding communications capability during an emergency, communicating with the public during an emergency, and providing support for decision makers. The R&D in information fusion and management for the intelligence, law enforcement, and emergency response communities should include data mining, data integration, language technologies, and processing of image and audio data. Much of the research reported in this special issue is related to information fusion and management for homeland security.
- Source
- Journal of the American Society for Information Science and Technology. 56(2005) no.3, S.217-220
-
Chen, H.; Yim, T.; Fye, D.: Automatic thesaurus generation for an electronic community system (1995)
0.00
0.004048911 = product of:
0.008097822 = sum of:
0.008097822 = product of:
0.012146732 = sum of:
0.009150138 = weight(_text_:d in 2918) [ClassicSimilarity], result of:
0.009150138 = score(doc=2918,freq=2.0), product of:
0.0871823 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.045888513 = queryNorm
0.104954086 = fieldWeight in 2918, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.0390625 = fieldNorm(doc=2918)
0.0029965942 = weight(_text_:s in 2918) [ClassicSimilarity], result of:
0.0029965942 = score(doc=2918,freq=2.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = queryNorm
0.060061958 = fieldWeight in 2918, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0390625 = fieldNorm(doc=2918)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Source
- Journal of the American Society for Information Science. 46(1995) no.3, S.175-193
-
Chen, H.; Fan, H.; Chau, M.; Zeng, D.: MetaSpider : meta-searching and categorization on the Web (2001)
0.00
0.004048911 = product of:
0.008097822 = sum of:
0.008097822 = product of:
0.012146732 = sum of:
0.009150138 = weight(_text_:d in 6849) [ClassicSimilarity], result of:
0.009150138 = score(doc=6849,freq=2.0), product of:
0.0871823 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.045888513 = queryNorm
0.104954086 = fieldWeight in 6849, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.0390625 = fieldNorm(doc=6849)
0.0029965942 = weight(_text_:s in 6849) [ClassicSimilarity], result of:
0.0029965942 = score(doc=6849,freq=2.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = queryNorm
0.060061958 = fieldWeight in 6849, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0390625 = fieldNorm(doc=6849)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Source
- Journal of the American Society for Information Science and technology. 52(2001) no.13, S.1134-1147
-
Marshall, B.; McDonald, D.; Chen, H.; Chung, W.: EBizPort: collecting and analyzing business intelligence information (2004)
0.00
0.004048911 = product of:
0.008097822 = sum of:
0.008097822 = product of:
0.012146732 = sum of:
0.009150138 = weight(_text_:d in 2505) [ClassicSimilarity], result of:
0.009150138 = score(doc=2505,freq=2.0), product of:
0.0871823 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.045888513 = queryNorm
0.104954086 = fieldWeight in 2505, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.0390625 = fieldNorm(doc=2505)
0.0029965942 = weight(_text_:s in 2505) [ClassicSimilarity], result of:
0.0029965942 = score(doc=2505,freq=2.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = queryNorm
0.060061958 = fieldWeight in 2505, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0390625 = fieldNorm(doc=2505)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Source
- Journal of the American Society for Information Science and Technology. 55(2004) no.10, S.873-891
-
Qu, B.; Cong, G.; Li, C.; Sun, A.; Chen, H.: ¬An evaluation of classification models for question topic categorization (2012)
0.00
0.004048911 = product of:
0.008097822 = sum of:
0.008097822 = product of:
0.012146732 = sum of:
0.009150138 = weight(_text_:d in 237) [ClassicSimilarity], result of:
0.009150138 = score(doc=237,freq=2.0), product of:
0.0871823 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.045888513 = queryNorm
0.104954086 = fieldWeight in 237, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.0390625 = fieldNorm(doc=237)
0.0029965942 = weight(_text_:s in 237) [ClassicSimilarity], result of:
0.0029965942 = score(doc=237,freq=2.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = queryNorm
0.060061958 = fieldWeight in 237, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0390625 = fieldNorm(doc=237)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Abstract
- We study the problem of question topic classification using a very large real-world Community Question Answering (CQA) dataset from Yahoo! Answers. The dataset comprises 3.9 million questions and these questions are organized into more than 1,000 categories in a hierarchy. To the best knowledge, this is the first systematic evaluation of the performance of different classification methods on question topic classification as well as short texts. Specifically, we empirically evaluate the following in classifying questions into CQA categories: (a) the usefulness of n-gram features and bag-of-word features; (b) the performance of three standard classification algorithms (naive Bayes, maximum entropy, and support vector machines); (c) the performance of the state-of-the-art hierarchical classification algorithms; (d) the effect of training data size on performance; and (e) the effectiveness of the different components of CQA data, including subject, content, asker, and the best answer. The experimental results show what aspects are important for question topic classification in terms of both effectiveness and efficiency. We believe that the experimental findings from this study will be useful in real-world classification problems.
- Source
- Journal of the American Society for Information Science and Technology. 63(2012) no.5, S.889-903
-
Benjamin, V.; Chen, H.; Zimbra, D.: Bridging the virtual and real : the relationship between web content, linkage, and geographical proximity of social movements (2014)
0.00
0.004048911 = product of:
0.008097822 = sum of:
0.008097822 = product of:
0.012146732 = sum of:
0.009150138 = weight(_text_:d in 1527) [ClassicSimilarity], result of:
0.009150138 = score(doc=1527,freq=2.0), product of:
0.0871823 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.045888513 = queryNorm
0.104954086 = fieldWeight in 1527, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.0390625 = fieldNorm(doc=1527)
0.0029965942 = weight(_text_:s in 1527) [ClassicSimilarity], result of:
0.0029965942 = score(doc=1527,freq=2.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = queryNorm
0.060061958 = fieldWeight in 1527, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0390625 = fieldNorm(doc=1527)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Source
- Journal of the Association for Information Science and Technology. 65(2014) no.11, S.2210-2222
-
Dumais, S.; Chen, H.: Hierarchical classification of Web content (2000)
0.00
0.0016951298 = product of:
0.0033902596 = sum of:
0.0033902596 = product of:
0.010170778 = sum of:
0.010170778 = weight(_text_:s in 492) [ClassicSimilarity], result of:
0.010170778 = score(doc=492,freq=4.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = queryNorm
0.20385705 = fieldWeight in 492, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.09375 = fieldNorm(doc=492)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Pages
- S.256-263
-
Chen, H.: Knowledge-based document retrieval : framework and design (1992)
0.00
0.0015981835 = product of:
0.003196367 = sum of:
0.003196367 = product of:
0.009589101 = sum of:
0.009589101 = weight(_text_:s in 5283) [ClassicSimilarity], result of:
0.009589101 = score(doc=5283,freq=2.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = queryNorm
0.19219826 = fieldWeight in 5283, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.125 = fieldNorm(doc=5283)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Source
- Journal of information science. 18(1992), S.293-314
-
Chen, H.: Generating, integrating and activating thesauri for concept-based document retrieval (1993)
0.00
0.0015981835 = product of:
0.003196367 = sum of:
0.003196367 = product of:
0.009589101 = sum of:
0.009589101 = weight(_text_:s in 7623) [ClassicSimilarity], result of:
0.009589101 = score(doc=7623,freq=2.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = queryNorm
0.19219826 = fieldWeight in 7623, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.125 = fieldNorm(doc=7623)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Source
- IEEE expert. 8(1993) no.2, S.25-34
-
Chen, H.; Lynch, K.J.; Bashu, K.; Ng, T.D.: Generating, integrating, and activating thesauri for concept-based document retrieval (1993)
0.00
0.0015981835 = product of:
0.003196367 = sum of:
0.003196367 = product of:
0.009589101 = sum of:
0.009589101 = weight(_text_:s in 8549) [ClassicSimilarity], result of:
0.009589101 = score(doc=8549,freq=2.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = queryNorm
0.19219826 = fieldWeight in 8549, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.125 = fieldNorm(doc=8549)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Source
- IEEE expert. 8(1993), April, S.25-34
-
Schatz, B.R.; Johnson, E.H.; Cochrane, P.A.; Chen, H.: Interactive term suggestion for users of digital libraries : using thesauri and co-occurrence lists for information retrieval (1996)
0.00
9.988648E-4 = product of:
0.0019977295 = sum of:
0.0019977295 = product of:
0.0059931884 = sum of:
0.0059931884 = weight(_text_:s in 6417) [ClassicSimilarity], result of:
0.0059931884 = score(doc=6417,freq=2.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = queryNorm
0.120123915 = fieldWeight in 6417, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.078125 = fieldNorm(doc=6417)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Pages
- S.126-133
-
Chen, H.: ¬An analysis of image queries in the field of art history (2001)
0.00
9.888257E-4 = product of:
0.0019776514 = sum of:
0.0019776514 = product of:
0.005932954 = sum of:
0.005932954 = weight(_text_:s in 5187) [ClassicSimilarity], result of:
0.005932954 = score(doc=5187,freq=4.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = queryNorm
0.118916616 = fieldWeight in 5187, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0546875 = fieldNorm(doc=5187)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Abstract
- Chen arranged with an Art History instructor to require 20 medieval art images in papers received from 29 students. Participants completed a self administered presearch and postsearch questionnaire, and were interviewed after questionnaire analysis, in order to collect both the keywords and phrases they planned to use, and those actually used. Three MLIS student reviewers then mapped the queries to Enser and McGregor's four categories, Jorgensen's 12 classes, and Fidel's 12 feature data and object poles providing a degree of match on a seven point scale (one not at all to 7 exact). The reviewers give highest scores to Enser and McGregor;'s categories. Modifications to both the Enser and McGregor and Jorgensen schemes are suggested
- Source
- Journal of the American Society for Information Science and technology. 52(2001) no.3, S.260-273
-
Jiang, S.; Gao, Q.; Chen, H.; Roco, M.C.: ¬The roles of sharing, transfer, and public funding in nanotechnology knowledge-diffusion networks (2015)
0.00
8.475649E-4 = product of:
0.0016951298 = sum of:
0.0016951298 = product of:
0.005085389 = sum of:
0.005085389 = weight(_text_:s in 1823) [ClassicSimilarity], result of:
0.005085389 = score(doc=1823,freq=4.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = queryNorm
0.101928525 = fieldWeight in 1823, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046875 = fieldNorm(doc=1823)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Source
- Journal of the Association for Information Science and Technology. 66(2015) no.5, S.1017-1029
-
Chen, H.; Dhar, V.: Cognitive process as a basis for intelligent retrieval system design (1991)
0.00
7.9909177E-4 = product of:
0.0015981835 = sum of:
0.0015981835 = product of:
0.0047945506 = sum of:
0.0047945506 = weight(_text_:s in 3845) [ClassicSimilarity], result of:
0.0047945506 = score(doc=3845,freq=2.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = queryNorm
0.09609913 = fieldWeight in 3845, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0625 = fieldNorm(doc=3845)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Source
- Information processing and management. 27(1991) no.5, S.405-432
