-
Hlava, M.M.K.: Automatic indexing : comparing rule-based and statistics-based indexing systems (2005)
0.02
0.024284663 = product of:
0.048569325 = sum of:
0.048569325 = product of:
0.09713865 = sum of:
0.09713865 = weight(_text_:22 in 6265) [ClassicSimilarity], result of:
0.09713865 = score(doc=6265,freq=2.0), product of:
0.17933457 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.051211677 = queryNorm
0.5416616 = fieldWeight in 6265, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.109375 = fieldNorm(doc=6265)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Information outlook. 9(2005) no.8, S.22-23
-
Hauer, M.: Automatische Indexierung (2000)
0.02
0.020815425 = product of:
0.04163085 = sum of:
0.04163085 = product of:
0.0832617 = sum of:
0.0832617 = weight(_text_:22 in 5887) [ClassicSimilarity], result of:
0.0832617 = score(doc=5887,freq=2.0), product of:
0.17933457 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.051211677 = queryNorm
0.46428138 = fieldWeight in 5887, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.09375 = fieldNorm(doc=5887)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Wissen in Aktion: Wege des Knowledge Managements. 22. Online-Tagung der DGI, Frankfurt am Main, 2.-4.5.2000. Proceedings. Hrsg.: R. Schmidt
-
Humphrey, S.M.; Névéol, A.; Browne, A.; Gobeil, J.; Ruch, P.; Darmoni, S.J.: Comparing a rule-based versus statistical system for automatic categorization of MEDLINE documents according to biomedical specialty (2009)
0.02
0.01663633 = product of:
0.03327266 = sum of:
0.03327266 = product of:
0.06654532 = sum of:
0.06654532 = weight(_text_:headings in 3300) [ClassicSimilarity], result of:
0.06654532 = score(doc=3300,freq=2.0), product of:
0.24837378 = queryWeight, product of:
4.849944 = idf(docFreq=940, maxDocs=44218)
0.051211677 = queryNorm
0.2679241 = fieldWeight in 3300, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.849944 = idf(docFreq=940, maxDocs=44218)
0.0390625 = fieldNorm(doc=3300)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- Automatic document categorization is an important research problem in Information Science and Natural Language Processing. Many applications, including, Word Sense Disambiguation and Information Retrieval in large collections, can benefit from such categorization. This paper focuses on automatic categorization of documents from the biomedical literature into broad discipline-based categories. Two different systems are described and contrasted: CISMeF, which uses rules based on human indexing of the documents by the Medical Subject Headings (MeSH) controlled vocabulary in order to assign metaterms (MTs), and Journal Descriptor Indexing (JDI), based on human categorization of about 4,000 journals and statistical associations between journal descriptors (JDs) and textwords in the documents. We evaluate and compare the performance of these systems against a gold standard of humanly assigned categories for 100 MEDLINE documents, using six measures selected from trec_eval. The results show that for five of the measures performance is comparable, and for one measure JDI is superior. We conclude that these results favor JDI, given the significantly greater intellectual overhead involved in human indexing and maintaining a rule base for mapping MeSH terms to MTs. We also note a JDI method that associates JDs with MeSH indexing rather than textwords, and it may be worthwhile to investigate whether this JDI method (statistical) and CISMeF (rule-based) might be combined and then evaluated showing they are complementary to one another.
-
Lepsky, K.; Vorhauer, J.: Lingo - ein open source System für die Automatische Indexierung deutschsprachiger Dokumente (2006)
0.01
0.01387695 = product of:
0.0277539 = sum of:
0.0277539 = product of:
0.0555078 = sum of:
0.0555078 = weight(_text_:22 in 3581) [ClassicSimilarity], result of:
0.0555078 = score(doc=3581,freq=2.0), product of:
0.17933457 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.051211677 = queryNorm
0.30952093 = fieldWeight in 3581, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0625 = fieldNorm(doc=3581)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 24. 3.2006 12:22:02
-
Probst, M.; Mittelbach, J.: Maschinelle Indexierung in der Sacherschließung wissenschaftlicher Bibliotheken (2006)
0.01
0.01387695 = product of:
0.0277539 = sum of:
0.0277539 = product of:
0.0555078 = sum of:
0.0555078 = weight(_text_:22 in 1755) [ClassicSimilarity], result of:
0.0555078 = score(doc=1755,freq=2.0), product of:
0.17933457 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.051211677 = queryNorm
0.30952093 = fieldWeight in 1755, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0625 = fieldNorm(doc=1755)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 22. 3.2008 12:35:19
-
Renz, M.: Automatische Inhaltserschließung im Zeichen von Wissensmanagement (2001)
0.01
0.012142331 = product of:
0.024284663 = sum of:
0.024284663 = product of:
0.048569325 = sum of:
0.048569325 = weight(_text_:22 in 5671) [ClassicSimilarity], result of:
0.048569325 = score(doc=5671,freq=2.0), product of:
0.17933457 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.051211677 = queryNorm
0.2708308 = fieldWeight in 5671, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0546875 = fieldNorm(doc=5671)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 22. 3.2001 13:14:48
-
Newman, D.J.; Block, S.: Probabilistic topic decomposition of an eighteenth-century American newspaper (2006)
0.01
0.012142331 = product of:
0.024284663 = sum of:
0.024284663 = product of:
0.048569325 = sum of:
0.048569325 = weight(_text_:22 in 5291) [ClassicSimilarity], result of:
0.048569325 = score(doc=5291,freq=2.0), product of:
0.17933457 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.051211677 = queryNorm
0.2708308 = fieldWeight in 5291, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0546875 = fieldNorm(doc=5291)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 22. 7.2006 17:32:00
-
Lorenz, S.: Konzeption und prototypische Realisierung einer begriffsbasierten Texterschließung (2006)
0.01
0.010407712 = product of:
0.020815425 = sum of:
0.020815425 = product of:
0.04163085 = sum of:
0.04163085 = weight(_text_:22 in 1746) [ClassicSimilarity], result of:
0.04163085 = score(doc=1746,freq=2.0), product of:
0.17933457 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.051211677 = queryNorm
0.23214069 = fieldWeight in 1746, 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=1746)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 22. 3.2015 9:17:30
-
Nohr, H.: Grundlagen der automatischen Indexierung : ein Lehrbuch (2003)
0.01
0.006938475 = product of:
0.01387695 = sum of:
0.01387695 = product of:
0.0277539 = sum of:
0.0277539 = weight(_text_:22 in 1767) [ClassicSimilarity], result of:
0.0277539 = score(doc=1767,freq=2.0), product of:
0.17933457 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.051211677 = queryNorm
0.15476047 = fieldWeight in 1767, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03125 = fieldNorm(doc=1767)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 22. 6.2009 12:46:51
