-
Berti, Jr., D.W.; Lima, G.; Maculan, B.; Soergel, D.: Computer-assisted checking of conceptual relationships in a large thesaurus (2018)
0.03
0.03222929 = product of:
0.06445858 = sum of:
0.06445858 = sum of:
0.014658477 = weight(_text_:d in 4721) [ClassicSimilarity], result of:
0.014658477 = score(doc=4721,freq=2.0), product of:
0.08729101 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.045945734 = queryNorm
0.16792654 = fieldWeight in 4721, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.0625 = fieldNorm(doc=4721)
0.049800098 = weight(_text_:22 in 4721) [ClassicSimilarity], result of:
0.049800098 = score(doc=4721,freq=2.0), product of:
0.16089413 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045945734 = queryNorm
0.30952093 = fieldWeight in 4721, 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=4721)
0.5 = coord(1/2)
- Date
- 17. 1.2019 19:04:22
-
Keyser, P. de: Indexing : from thesauri to the Semantic Web (2012)
0.01
0.009337518 = product of:
0.018675037 = sum of:
0.018675037 = product of:
0.037350073 = sum of:
0.037350073 = weight(_text_:22 in 3197) [ClassicSimilarity], result of:
0.037350073 = score(doc=3197,freq=2.0), product of:
0.16089413 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045945734 = queryNorm
0.23214069 = fieldWeight in 3197, 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=3197)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 24. 8.2016 14:03:22
-
Kless, D.; Milton, S.: Comparison of thesauri and ontologies from a semiotic perspective (2010)
0.00
0.0027484642 = product of:
0.0054969285 = sum of:
0.0054969285 = product of:
0.010993857 = sum of:
0.010993857 = weight(_text_:d in 756) [ClassicSimilarity], result of:
0.010993857 = score(doc=756,freq=2.0), product of:
0.08729101 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.045945734 = queryNorm
0.1259449 = fieldWeight in 756, 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=756)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Youlin, Z.; Baptista Nunes, J.M.; Zhonghua, D.: Construction and evolution of a Chinese Information Science and Information Service (CIS&IS) onto-thesaurus (2014)
0.00
0.0027484642 = product of:
0.0054969285 = sum of:
0.0054969285 = product of:
0.010993857 = sum of:
0.010993857 = weight(_text_:d in 1376) [ClassicSimilarity], result of:
0.010993857 = score(doc=1376,freq=2.0), product of:
0.08729101 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.045945734 = queryNorm
0.1259449 = fieldWeight in 1376, 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=1376)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Tudhope, D.; Binding, C.: Still quite popular after all those years : the continued relevance of the information retrieval thesaurus (2016)
0.00
0.0027484642 = product of:
0.0054969285 = sum of:
0.0054969285 = product of:
0.010993857 = sum of:
0.010993857 = weight(_text_:d in 2908) [ClassicSimilarity], result of:
0.010993857 = score(doc=2908,freq=2.0), product of:
0.08729101 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.045945734 = queryNorm
0.1259449 = fieldWeight in 2908, 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=2908)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Dextre Clarke, S.G.: ¬The Information Retrieval Thesaurus (2019)
0.00
0.0027484642 = product of:
0.0054969285 = sum of:
0.0054969285 = product of:
0.010993857 = sum of:
0.010993857 = weight(_text_:d in 5210) [ClassicSimilarity], result of:
0.010993857 = score(doc=5210,freq=2.0), product of:
0.08729101 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.045945734 = queryNorm
0.1259449 = fieldWeight in 5210, 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=5210)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- In the post-war period before computers were readily available, urgent demand for scientific and industrial develop-ment stimulated research and development (R&D) that led to the birth of the information retrieval thesaurus. This article traces the early history, speciation and progressive improvement of the thesaurus to reach the state now conveyed by guidelines in inter-national and national standards. Despite doubts about the effec-tiveness of the thesaurus throughout this period, and notwith-standing the dominance of Google and other search engines in the information retrieval (IR) scene today, the thesaurus still plays a complementary part in the organization of knowledge and in-formation resources. Success today depends on interoperability, and is opening up opportunities in linked data applications. At the same time, the IR demand from workers in the knowledge society drives interest in hybrid forms of knowledge organization system (KOS) that may pool the genes of thesauri with those of ontologies and classification schemes.
-
Tavakolizadeh-Ravari, M.: Analysis of the long term dynamics in thesaurus developments and its consequences (2017)
0.00
0.0025912772 = product of:
0.0051825545 = sum of:
0.0051825545 = product of:
0.010365109 = sum of:
0.010365109 = weight(_text_:d in 3081) [ClassicSimilarity], result of:
0.010365109 = score(doc=3081,freq=4.0), product of:
0.08729101 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.045945734 = queryNorm
0.118742 = fieldWeight in 3081, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.03125 = fieldNorm(doc=3081)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- Die Arbeit analysiert die dynamische Entwicklung und den Gebrauch von Thesaurusbegriffen. Zusätzlich konzentriert sie sich auf die Faktoren, die die Zahl von Indexbegriffen pro Dokument oder Zeitschrift beeinflussen. Als Untersuchungsobjekt dienten der MeSH und die entsprechende Datenbank "MEDLINE". Die wichtigsten Konsequenzen sind: 1. Der MeSH-Thesaurus hat sich durch drei unterschiedliche Phasen jeweils logarithmisch entwickelt. Solch einen Thesaurus sollte folgenden Gleichung folgen: "T = 3.076,6 Ln (d) - 22.695 + 0,0039d" (T = Begriffe, Ln = natürlicher Logarithmus und d = Dokumente). Um solch einen Thesaurus zu konstruieren, muss man demnach etwa 1.600 Dokumente von unterschiedlichen Themen des Bereiches des Thesaurus haben. Die dynamische Entwicklung von Thesauri wie MeSH erfordert die Einführung eines neuen Begriffs pro Indexierung von 256 neuen Dokumenten. 2. Die Verteilung der Thesaurusbegriffe erbrachte drei Kategorien: starke, normale und selten verwendete Headings. Die letzte Gruppe ist in einer Testphase, während in der ersten und zweiten Kategorie die neu hinzukommenden Deskriptoren zu einem Thesauruswachstum führen. 3. Es gibt ein logarithmisches Verhältnis zwischen der Zahl von Index-Begriffen pro Aufsatz und dessen Seitenzahl für die Artikeln zwischen einer und einundzwanzig Seiten. 4. Zeitschriftenaufsätze, die in MEDLINE mit Abstracts erscheinen erhalten fast zwei Deskriptoren mehr. 5. Die Findablity der nicht-englisch sprachigen Dokumente in MEDLINE ist geringer als die englische Dokumente. 6. Aufsätze der Zeitschriften mit einem Impact Factor 0 bis fünfzehn erhalten nicht mehr Indexbegriffe als die der anderen von MEDINE erfassten Zeitschriften. 7. In einem Indexierungssystem haben unterschiedliche Zeitschriften mehr oder weniger Gewicht in ihrem Findability. Die Verteilung der Indexbegriffe pro Seite hat gezeigt, dass es bei MEDLINE drei Kategorien der Publikationen gibt. Außerdem gibt es wenige stark bevorzugten Zeitschriften."
-
Kless, D.; Milton, S.; Kazmierczak, E.; Lindenthal, J.: Thesaurus and ontology structure : formal and pragmatic differences and similarities (2015)
0.00
0.002290387 = product of:
0.004580774 = sum of:
0.004580774 = product of:
0.009161548 = sum of:
0.009161548 = weight(_text_:d in 2036) [ClassicSimilarity], result of:
0.009161548 = score(doc=2036,freq=2.0), product of:
0.08729101 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.045945734 = queryNorm
0.104954086 = fieldWeight in 2036, 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=2036)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Martín-Moncunill, D.; García-Barriocanal, E.; Sicilia, M.-A.; Sánchez-Alonso, S.: Evaluating the practical applicability of thesaurus-based keyphrase extraction in the agricultural domain : insights from the VOA3R project (2015)
0.00
0.002290387 = product of:
0.004580774 = sum of:
0.004580774 = product of:
0.009161548 = sum of:
0.009161548 = weight(_text_:d in 2106) [ClassicSimilarity], result of:
0.009161548 = score(doc=2106,freq=2.0), product of:
0.08729101 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.045945734 = queryNorm
0.104954086 = fieldWeight in 2106, 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=2106)
0.5 = coord(1/2)
0.5 = coord(1/2)
