-
Li, J.; Shi, D.: Sleeping beauties in genius work : when were they awakened? (2016)
0.02
0.022825247 = product of:
0.045650493 = sum of:
0.045650493 = sum of:
0.010381345 = weight(_text_:d in 2647) [ClassicSimilarity], result of:
0.010381345 = score(doc=2647,freq=2.0), product of:
0.08242767 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.04338591 = queryNorm
0.1259449 = fieldWeight in 2647, 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=2647)
0.03526915 = weight(_text_:22 in 2647) [ClassicSimilarity], result of:
0.03526915 = score(doc=2647,freq=2.0), product of:
0.15193006 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04338591 = queryNorm
0.23214069 = fieldWeight in 2647, 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=2647)
0.5 = coord(1/2)
- Date
- 22. 1.2016 14:13:32
-
Zhu, Q.; Kong, X.; Hong, S.; Li, J.; He, Z.: Global ontology research progress : a bibliometric analysis (2015)
0.01
0.010391274 = product of:
0.020782547 = sum of:
0.020782547 = product of:
0.041565094 = sum of:
0.041565094 = weight(_text_:22 in 2590) [ClassicSimilarity], result of:
0.041565094 = score(doc=2590,freq=4.0), product of:
0.15193006 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04338591 = queryNorm
0.27358043 = fieldWeight in 2590, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=2590)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 20. 1.2015 18:30:22
17. 9.2018 18:22:23
-
Lin, X.; Li, J.; Zhou, X.: Theme creation for digital collections (2008)
0.01
0.010286836 = product of:
0.020573672 = sum of:
0.020573672 = product of:
0.041147344 = sum of:
0.041147344 = weight(_text_:22 in 2635) [ClassicSimilarity], result of:
0.041147344 = score(doc=2635,freq=2.0), product of:
0.15193006 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04338591 = queryNorm
0.2708308 = fieldWeight in 2635, 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=2635)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Metadata for semantic and social applications : proceedings of the International Conference on Dublin Core and Metadata Applications, Berlin, 22 - 26 September 2008, DC 2008: Berlin, Germany / ed. by Jane Greenberg and Wolfgang Klas
-
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
0.00734774 = product of:
0.01469548 = sum of:
0.01469548 = product of:
0.02939096 = sum of:
0.02939096 = weight(_text_:22 in 5276) [ClassicSimilarity], result of:
0.02939096 = score(doc=5276,freq=2.0), product of:
0.15193006 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04338591 = 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)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 22. 7.2006 16:14:37
-
Liu, X.; Bu, Y.; Li, M.; Li, J.: Monodisciplinary collaboration disrupts science more than multidisciplinary collaboration (2024)
0.00
0.00367036 = product of:
0.00734072 = sum of:
0.00734072 = product of:
0.01468144 = sum of:
0.01468144 = weight(_text_:d in 1202) [ClassicSimilarity], result of:
0.01468144 = score(doc=1202,freq=4.0), product of:
0.08242767 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.04338591 = queryNorm
0.178113 = fieldWeight in 1202, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.046875 = fieldNorm(doc=1202)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- Collaboration across disciplines is a critical form of scientific collaboration to solve complex problems and make innovative contributions. This study focuses on the association between multidisciplinary collaboration measured by coauthorship in publications and the disruption of publications measured by the Disruption (D) index. We used authors' affiliations as a proxy of the disciplines to which they belong and categorized an article into multidisciplinary collaboration or monodisciplinary collaboration. The D index quantifies the extent to which a study disrupts its predecessors. We selected 13 journals that publish articles in six disciplines from the Microsoft Academic Graph (MAG) database and then constructed regression models with fixed effects and estimated the relationship between the variables. The findings show that articles with monodisciplinary collaboration are more disruptive than those with multidisciplinary collaboration. Furthermore, we uncovered the mechanism of how monodisciplinary collaboration disrupts science more than multidisciplinary collaboration by exploring the references of the sampled publications.
-
Lin, N.; Li, D.; Ding, Y.; He, B.; Qin, Z.; Tang, J.; Li, J.; Dong, T.: ¬The dynamic features of Delicious, Flickr, and YouTube (2012)
0.00
0.0030586333 = product of:
0.0061172666 = sum of:
0.0061172666 = product of:
0.012234533 = sum of:
0.012234533 = weight(_text_:d in 4970) [ClassicSimilarity], result of:
0.012234533 = score(doc=4970,freq=4.0), product of:
0.08242767 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.04338591 = queryNorm
0.1484275 = fieldWeight in 4970, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.0390625 = fieldNorm(doc=4970)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- This article investigates the dynamic features of social tagging vocabularies in Delicious, Flickr, and YouTube from 2003 to 2008. Three algorithms are designed to study the macro- and micro-tag growth as well as the dynamics of taggers' activities, respectively. Moreover, we propose a Tagger Tag Resource Latent Dirichlet Allocation (TTR-LDA) model to explore the evolution of topics emerging from those social vocabularies. Our results show that (a) at the macro level, tag growth in all the three tagging systems obeys power law distribution with exponents lower than 1; at the micro level, the tag growth of popular resources in all three tagging systems follows a similar power law distribution; (b) the exponents of tag growth vary in different evolving stages of resources; (c) the growth of number of taggers associated with different popular resources presents a feature of convergence over time; (d) the active level of taggers has a positive correlation with the macro-tag growth of different tagging systems; and (e) some topics evolve into several subtopics over time while others experience relatively stable stages in which their contents do not change much, and certain groups of taggers continue their interests in them.
-
Zhang, C.; Zeng, D.; Li, J.; Wang, F.-Y.; Zuo, W.: Sentiment analysis of Chinese documents : from sentence to document level (2009)
0.00
0.0025953362 = product of:
0.0051906724 = sum of:
0.0051906724 = product of:
0.010381345 = sum of:
0.010381345 = weight(_text_:d in 3296) [ClassicSimilarity], result of:
0.010381345 = score(doc=3296,freq=2.0), product of:
0.08242767 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.04338591 = queryNorm
0.1259449 = fieldWeight in 3296, 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=3296)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Shi, D.; Rousseau, R.; Yang, L.; Li, J.: ¬A journal's impact factor is influenced by changes in publication delays of citing journals (2017)
0.00
0.0025953362 = product of:
0.0051906724 = sum of:
0.0051906724 = product of:
0.010381345 = sum of:
0.010381345 = weight(_text_:d in 3441) [ClassicSimilarity], result of:
0.010381345 = score(doc=3441,freq=2.0), product of:
0.08242767 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.04338591 = queryNorm
0.1259449 = fieldWeight in 3441, 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=3441)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Li, J.; Zhang, P.; Song, D.; Wu, Y.: Understanding an enriched multidimensional user relevance model by analyzing query logs (2017)
0.00
0.0025953362 = product of:
0.0051906724 = sum of:
0.0051906724 = product of:
0.010381345 = sum of:
0.010381345 = weight(_text_:d in 3961) [ClassicSimilarity], result of:
0.010381345 = score(doc=3961,freq=2.0), product of:
0.08242767 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.04338591 = queryNorm
0.1259449 = fieldWeight in 3961, 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=3961)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Xie, Z.; Ouyang, Z.; Li, J.; Dong, E.: Modelling transition phenomena of scientific coauthorship networks (2018)
0.00
0.0025953362 = product of:
0.0051906724 = sum of:
0.0051906724 = product of:
0.010381345 = sum of:
0.010381345 = weight(_text_:d in 4043) [ClassicSimilarity], result of:
0.010381345 = score(doc=4043,freq=2.0), product of:
0.08242767 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.04338591 = queryNorm
0.1259449 = fieldWeight in 4043, 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=4043)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Editor
- Yi, D.
