-
Chen, M.; Liu, X.; Qin, J.: Semantic relation extraction from socially-generated tags : a methodology for metadata generation (2008)
0.05
0.047498893 = product of:
0.094997786 = sum of:
0.05559624 = weight(_text_:processing in 2648) [ClassicSimilarity], result of:
0.05559624 = score(doc=2648,freq=4.0), product of:
0.175792 = queryWeight, product of:
4.048147 = idf(docFreq=2097, maxDocs=44218)
0.043425296 = queryNorm
0.3162615 = fieldWeight in 2648, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.048147 = idf(docFreq=2097, maxDocs=44218)
0.0390625 = fieldNorm(doc=2648)
0.039401546 = product of:
0.05910232 = sum of:
0.029684676 = weight(_text_:29 in 2648) [ClassicSimilarity], result of:
0.029684676 = score(doc=2648,freq=2.0), product of:
0.15275662 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.043425296 = queryNorm
0.19432661 = fieldWeight in 2648, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.0390625 = fieldNorm(doc=2648)
0.029417641 = weight(_text_:22 in 2648) [ClassicSimilarity], result of:
0.029417641 = score(doc=2648,freq=2.0), product of:
0.15206799 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.043425296 = queryNorm
0.19345059 = fieldWeight in 2648, 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=2648)
0.6666667 = coord(2/3)
0.5 = coord(2/4)
- Abstract
- The growing predominance of social semantics in the form of tagging presents the metadata community with both opportunities and challenges as for leveraging this new form of information content representation and for retrieval. One key challenge is the absence of contextual information associated with these tags. This paper presents an experiment working with Flickr tags as an example of utilizing social semantics sources for enriching subject metadata. The procedure included four steps: 1) Collecting a sample of Flickr tags, 2) Calculating cooccurrences between tags through mutual information, 3) Tracing contextual information of tag pairs via Google search results, 4) Applying natural language processing and machine learning techniques to extract semantic relations between tags. The experiment helped us to build a context sentence collection from the Google search results, which was then processed by natural language processing and machine learning algorithms. This new approach achieved a reasonably good rate of accuracy in assigning semantic relations to tag pairs. This paper also explores the implications of this approach for using social semantics to enrich subject metadata.
- Date
- 20. 2.2009 10:29:07
- 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
-
Liu, X.; Yu, S.; Janssens, F.; Glänzel, W.; Moreau, Y.; Moor, B.de: Weighted hybrid clustering by combining text mining and bibliometrics on a large-scale journal database (2010)
0.04
0.0448773 = product of:
0.0897546 = sum of:
0.04717497 = weight(_text_:processing in 3464) [ClassicSimilarity], result of:
0.04717497 = score(doc=3464,freq=2.0), product of:
0.175792 = queryWeight, product of:
4.048147 = idf(docFreq=2097, maxDocs=44218)
0.043425296 = queryNorm
0.26835677 = fieldWeight in 3464, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.048147 = idf(docFreq=2097, maxDocs=44218)
0.046875 = fieldNorm(doc=3464)
0.04257962 = product of:
0.06386943 = sum of:
0.02824782 = weight(_text_:science in 3464) [ClassicSimilarity], result of:
0.02824782 = score(doc=3464,freq=4.0), product of:
0.11438741 = queryWeight, product of:
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.043425296 = queryNorm
0.24694869 = fieldWeight in 3464, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.046875 = fieldNorm(doc=3464)
0.03562161 = weight(_text_:29 in 3464) [ClassicSimilarity], result of:
0.03562161 = score(doc=3464,freq=2.0), product of:
0.15275662 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.043425296 = queryNorm
0.23319192 = fieldWeight in 3464, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.046875 = fieldNorm(doc=3464)
0.6666667 = coord(2/3)
0.5 = coord(2/4)
- Abstract
- We propose a new hybrid clustering framework to incorporate text mining with bibliometrics in journal set analysis. The framework integrates two different approaches: clustering ensemble and kernel-fusion clustering. To improve the flexibility and the efficiency of processing large-scale data, we propose an information-based weighting scheme to leverage the effect of multiple data sources in hybrid clustering. Three different algorithms are extended by the proposed weighting scheme and they are employed on a large journal set retrieved from the Web of Science (WoS) database. The clustering performance of the proposed algorithms is systematically evaluated using multiple evaluation methods, and they were cross-compared with alternative methods. Experimental results demonstrate that the proposed weighted hybrid clustering strategy is superior to other methods in clustering performance and efficiency. The proposed approach also provides a more refined structural mapping of journal sets, which is useful for monitoring and detecting new trends in different scientific fields.
- Date
- 1. 6.2010 9:29:57
- Source
- Journal of the American Society for Information Science and Technology. 61(2010) no.6, S.1105-1119
-
Liu, X.; Guo, C.; Zhang, L.: Scholar metadata and knowledge generation with human and artificial intelligence (2014)
0.03
0.026916523 = product of:
0.053833045 = sum of:
0.04717497 = weight(_text_:processing in 1287) [ClassicSimilarity], result of:
0.04717497 = score(doc=1287,freq=2.0), product of:
0.175792 = queryWeight, product of:
4.048147 = idf(docFreq=2097, maxDocs=44218)
0.043425296 = queryNorm
0.26835677 = fieldWeight in 1287, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.048147 = idf(docFreq=2097, maxDocs=44218)
0.046875 = fieldNorm(doc=1287)
0.006658075 = product of:
0.019974224 = sum of:
0.019974224 = weight(_text_:science in 1287) [ClassicSimilarity], result of:
0.019974224 = score(doc=1287,freq=2.0), product of:
0.11438741 = queryWeight, product of:
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.043425296 = queryNorm
0.17461908 = fieldWeight in 1287, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.046875 = fieldNorm(doc=1287)
0.33333334 = coord(1/3)
0.5 = coord(2/4)
- Abstract
- Scholar metadata have traditionally centered on descriptive representations, which have been used as a foundation for scholarly publication repositories and academic information retrieval systems. In this article, we propose innovative and economic methods of generating knowledge-based structural metadata (structural keywords) using a combination of natural language processing-based machine-learning techniques and human intelligence. By allowing low-barrier participation through a social media system, scholars (both as authors and users) can participate in the metadata editing and enhancing process and benefit from more accurate and effective information retrieval. Our experimental web system ScholarWiki uses machine learning techniques, which automatically produce increasingly refined metadata by learning from the structural metadata contributed by scholars. The cumulated structural metadata add intelligence and automatically enhance and update recursively the quality of metadata, wiki pages, and the machine-learning model.
- Source
- Journal of the Association for Information Science and Technology. 65(2014) no.6, S.1187-1201
-
Zhang, X.; Fang, Y.; He, W.; Zhang, Y.; Liu, X.: Epistemic motivation, task reflexivity, and knowledge contribution behavior on team wikis : a cross-level moderation model (2019)
0.03
0.026916523 = product of:
0.053833045 = sum of:
0.04717497 = weight(_text_:processing in 5245) [ClassicSimilarity], result of:
0.04717497 = score(doc=5245,freq=2.0), product of:
0.175792 = queryWeight, product of:
4.048147 = idf(docFreq=2097, maxDocs=44218)
0.043425296 = queryNorm
0.26835677 = fieldWeight in 5245, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.048147 = idf(docFreq=2097, maxDocs=44218)
0.046875 = fieldNorm(doc=5245)
0.006658075 = product of:
0.019974224 = sum of:
0.019974224 = weight(_text_:science in 5245) [ClassicSimilarity], result of:
0.019974224 = score(doc=5245,freq=2.0), product of:
0.11438741 = queryWeight, product of:
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.043425296 = queryNorm
0.17461908 = fieldWeight in 5245, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.046875 = fieldNorm(doc=5245)
0.33333334 = coord(1/3)
0.5 = coord(2/4)
- Abstract
- A cross-level model based on the information processing perspective and trait activation theory was developed and tested in order to investigate the effects of individual-level epistemic motivation and team-level task reflexivity on three different individual contribution behaviors (i.e., adding, deleting, and revising) in the process of knowledge creation on team wikis. Using the Hierarchical Linear Modeling software package and the 2-wave data from 166 individuals in 51 wiki-based teams, we found cross-level interaction effects between individual epistemic motivation and team task reflexivity on different knowledge contribution behaviors on wikis. Epistemic motivation exerted a positive effect on adding, which was strengthened by team task reflexivity. The effect of epistemic motivation on deleting was positive only when task reflexivity was high. In addition, epistemic motivation was strongly positively related to revising, regardless of the level of task reflexivity involved.
- Source
- Journal of the Association for Information Science and Technology. 70(2019) no.5, S.448-461
-
Liu, X.; Zheng, W.; Fang, H.: ¬An exploration of ranking models and feedback method for related entity finding (2013)
0.01
0.00982812 = product of:
0.03931248 = sum of:
0.03931248 = weight(_text_:processing in 2714) [ClassicSimilarity], result of:
0.03931248 = score(doc=2714,freq=2.0), product of:
0.175792 = queryWeight, product of:
4.048147 = idf(docFreq=2097, maxDocs=44218)
0.043425296 = queryNorm
0.22363065 = fieldWeight in 2714, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.048147 = idf(docFreq=2097, maxDocs=44218)
0.0390625 = fieldNorm(doc=2714)
0.25 = coord(1/4)
- Source
- Information processing and management. 49(2013) no.5, S.995-1007
-
Liu, X.: ¬The standardization of Chinese library classification (1993)
0.01
0.009265972 = product of:
0.03706389 = sum of:
0.03706389 = product of:
0.055595834 = sum of:
0.019974224 = weight(_text_:science in 5588) [ClassicSimilarity], result of:
0.019974224 = score(doc=5588,freq=2.0), product of:
0.11438741 = queryWeight, product of:
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.043425296 = queryNorm
0.17461908 = fieldWeight in 5588, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.046875 = fieldNorm(doc=5588)
0.03562161 = weight(_text_:29 in 5588) [ClassicSimilarity], result of:
0.03562161 = score(doc=5588,freq=2.0), product of:
0.15275662 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.043425296 = queryNorm
0.23319192 = fieldWeight in 5588, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.046875 = fieldNorm(doc=5588)
0.6666667 = coord(2/3)
0.25 = coord(1/4)
- Abstract
- The standardization of Chinese materials classification was first proposed in the late-1970s in China. In December 1980, the CCDST, the Chinese Library Association and the Chinese Society for Information Science proposed that the Chinese Library Classification system be adopted as national standard. This marked the beginning of the standardization of Chinese materials classification. Later on, there were many conferences and workshops held and four draft national standards were discussed, those for the Chinese Library Classification systems, the Materials Classification System, the Rules for Thesaurus and Subject Headings, and the rules for Materials Classifying Color Recognition. This article gives a brief review on the historical development of the standardization on Chinese Library Classification. It also discusses its effects on automation, networking and resources sharing and the feasibility of adopting Chinese Library Classification as a National Standard. In addition, the main content of the standardization of materials classification, use of the national standard classification system and variations under the standard system are covered in this article
- Date
- 8.10.2000 14:29:26
-
Jiang, Z.; Liu, X.; Chen, Y.: Recovering uncaptured citations in a scholarly network : a two-step citation analysis to estimate publication importance (2016)
0.01
0.007721644 = product of:
0.030886576 = sum of:
0.030886576 = product of:
0.046329863 = sum of:
0.016645188 = weight(_text_:science in 3018) [ClassicSimilarity], result of:
0.016645188 = score(doc=3018,freq=2.0), product of:
0.11438741 = queryWeight, product of:
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.043425296 = queryNorm
0.1455159 = fieldWeight in 3018, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.0390625 = fieldNorm(doc=3018)
0.029684676 = weight(_text_:29 in 3018) [ClassicSimilarity], result of:
0.029684676 = score(doc=3018,freq=2.0), product of:
0.15275662 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.043425296 = queryNorm
0.19432661 = fieldWeight in 3018, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.0390625 = fieldNorm(doc=3018)
0.6666667 = coord(2/3)
0.25 = coord(1/4)
- Date
- 12. 6.2016 20:31:29
- Source
- Journal of the Association for Information Science and Technology. 67(2016) no.7, S.1722-1735
-
Chen, S.Y.; Liu, X.: ¬The contribution of data mining to information science : making sense of it all (2005)
0.00
0.00470797 = product of:
0.01883188 = sum of:
0.01883188 = product of:
0.05649564 = sum of:
0.05649564 = weight(_text_:science in 4655) [ClassicSimilarity], result of:
0.05649564 = score(doc=4655,freq=4.0), product of:
0.11438741 = queryWeight, product of:
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.043425296 = queryNorm
0.49389738 = fieldWeight in 4655, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.09375 = fieldNorm(doc=4655)
0.33333334 = coord(1/3)
0.25 = coord(1/4)
- Source
- Journal of information science. 30(2005) no.6, S.550-
-
Liu, X.; Bu, Y.; Li, M.; Li, J.: Monodisciplinary collaboration disrupts science more than multidisciplinary collaboration (2024)
0.00
0.0028830315 = product of:
0.011532126 = sum of:
0.011532126 = product of:
0.034596376 = sum of:
0.034596376 = weight(_text_:science in 1202) [ClassicSimilarity], result of:
0.034596376 = score(doc=1202,freq=6.0), product of:
0.11438741 = queryWeight, product of:
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.043425296 = queryNorm
0.30244917 = fieldWeight in 1202, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.046875 = fieldNorm(doc=1202)
0.33333334 = coord(1/3)
0.25 = coord(1/4)
- 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.
- Source
- Journal of the Association for Information Science and Technology. 75(2023) no.1, S.59-78
-
Clewley, N.; Chen, S.Y.; Liu, X.: Cognitive styles and search engine preferences : field dependence/independence vs holism/serialism (2010)
0.00
0.0024737231 = product of:
0.009894893 = sum of:
0.009894893 = product of:
0.029684676 = sum of:
0.029684676 = weight(_text_:29 in 3961) [ClassicSimilarity], result of:
0.029684676 = score(doc=3961,freq=2.0), product of:
0.15275662 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.043425296 = queryNorm
0.19432661 = fieldWeight in 3961, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.0390625 = fieldNorm(doc=3961)
0.33333334 = coord(1/3)
0.25 = coord(1/4)
- Date
- 29. 8.2010 13:11:47
-
Liu, X.; Chen, X.: Authors' noninstitutional emails and their correlation with retraction (2021)
0.00
0.0022193585 = product of:
0.008877434 = sum of:
0.008877434 = product of:
0.0266323 = sum of:
0.0266323 = weight(_text_:science in 152) [ClassicSimilarity], result of:
0.0266323 = score(doc=152,freq=2.0), product of:
0.11438741 = queryWeight, product of:
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.043425296 = queryNorm
0.23282544 = fieldWeight in 152, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.0625 = fieldNorm(doc=152)
0.33333334 = coord(1/3)
0.25 = coord(1/4)
- Source
- Journal of the Association for Information Science and Technology. 72(2021) no.4, S.449-4473-477
-
Liu, X.; Kaza, S.; Zhang, P.; Chen, H.: Determining inventor status and its effect on knowledge diffusion : a study on nanotechnology literature from China, Russia, and India (2011)
0.00
0.001961654 = product of:
0.007846616 = sum of:
0.007846616 = product of:
0.023539849 = sum of:
0.023539849 = weight(_text_:science in 4468) [ClassicSimilarity], result of:
0.023539849 = score(doc=4468,freq=4.0), product of:
0.11438741 = queryWeight, product of:
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.043425296 = queryNorm
0.20579056 = fieldWeight in 4468, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.0390625 = fieldNorm(doc=4468)
0.33333334 = coord(1/3)
0.25 = coord(1/4)
- Abstract
- In an increasingly global research landscape, it is important to identify the most prolific researchers in various institutions and their influence on the diffusion of knowledge. Knowledge diffusion within institutions is influenced by not just the status of individual researchers but also the collaborative culture that determines status. There are various methods to measure individual status, but few studies have compared them or explored the possible effects of different cultures on the status measures. In this article, we examine knowledge diffusion within science and technology-oriented research organizations. Using social network analysis metrics to measure individual status in large-scale coauthorship networks, we studied an individual's impact on the recombination of knowledge to produce innovation in nanotechnology. Data from the most productive and high-impact institutions in China (Chinese Academy of Sciences), Russia (Russian Academy of Sciences), and India (Indian Institutes of Technology) were used. We found that boundary-spanning individuals influenced knowledge diffusion in all countries. However, our results also indicate that cultural and institutional differences may influence knowledge diffusion.
- Source
- Journal of the American Society for Information Science and Technology. 62(2011) no.6, S.1166-1176
-
Frias-Martinez, E.; Chen, S.Y.; Liu, X.: Automatic cognitive style identification of digital library users for personalization (2007)
0.00
0.0016645187 = product of:
0.006658075 = sum of:
0.006658075 = product of:
0.019974224 = sum of:
0.019974224 = weight(_text_:science in 74) [ClassicSimilarity], result of:
0.019974224 = score(doc=74,freq=2.0), product of:
0.11438741 = queryWeight, product of:
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.043425296 = queryNorm
0.17461908 = fieldWeight in 74, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.046875 = fieldNorm(doc=74)
0.33333334 = coord(1/3)
0.25 = coord(1/4)
- Source
- Journal of the American Society for Information Science and Technology. 58(2007) no.2, S.237-251
-
Liu, X.: Generating metadata for cyberlearning resources through information retrieval and meta-search (2013)
0.00
0.0016645187 = product of:
0.006658075 = sum of:
0.006658075 = product of:
0.019974224 = sum of:
0.019974224 = weight(_text_:science in 676) [ClassicSimilarity], result of:
0.019974224 = score(doc=676,freq=2.0), product of:
0.11438741 = queryWeight, product of:
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.043425296 = queryNorm
0.17461908 = fieldWeight in 676, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.046875 = fieldNorm(doc=676)
0.33333334 = coord(1/3)
0.25 = coord(1/4)
- Source
- Journal of the American Society for Information Science and Technology. 64(2013) no.4, S.771-786
-
Liu, X.; Jia, H.: Answering academic questions for education by recommending cyberlearning resources (2013)
0.00
0.0016645187 = product of:
0.006658075 = sum of:
0.006658075 = product of:
0.019974224 = sum of:
0.019974224 = weight(_text_:science in 1012) [ClassicSimilarity], result of:
0.019974224 = score(doc=1012,freq=2.0), product of:
0.11438741 = queryWeight, product of:
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.043425296 = queryNorm
0.17461908 = fieldWeight in 1012, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.046875 = fieldNorm(doc=1012)
0.33333334 = coord(1/3)
0.25 = coord(1/4)
- Source
- Journal of the American Society for Information Science and Technology. 64(2013) no.8, S.1707-1722
-
Liu, X.; Turtle, H.: Real-time user interest modeling for real-time ranking (2013)
0.00
0.0016645187 = product of:
0.006658075 = sum of:
0.006658075 = product of:
0.019974224 = sum of:
0.019974224 = weight(_text_:science in 1035) [ClassicSimilarity], result of:
0.019974224 = score(doc=1035,freq=2.0), product of:
0.11438741 = queryWeight, product of:
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.043425296 = queryNorm
0.17461908 = fieldWeight in 1035, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.046875 = fieldNorm(doc=1035)
0.33333334 = coord(1/3)
0.25 = coord(1/4)
- Source
- Journal of the American Society for Information Science and Technology. 64(2013) no.8, S.1557-1576
-
Liu, X.; Croft, W.B.: Statistical language modeling for information retrieval (2004)
0.00
0.001387099 = product of:
0.005548396 = sum of:
0.005548396 = product of:
0.016645188 = sum of:
0.016645188 = weight(_text_:science in 4277) [ClassicSimilarity], result of:
0.016645188 = score(doc=4277,freq=2.0), product of:
0.11438741 = queryWeight, product of:
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.043425296 = queryNorm
0.1455159 = fieldWeight in 4277, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.0390625 = fieldNorm(doc=4277)
0.33333334 = coord(1/3)
0.25 = coord(1/4)
- Source
- Annual review of information science and technology. 39(2005), S.3-32
-
Zhang, C.; Liu, X.; Xu, Y.(C.); Wang, Y.: Quality-structure index : a new metric to measure scientific journal influence (2011)
0.00
0.001387099 = product of:
0.005548396 = sum of:
0.005548396 = product of:
0.016645188 = sum of:
0.016645188 = weight(_text_:science in 4366) [ClassicSimilarity], result of:
0.016645188 = score(doc=4366,freq=2.0), product of:
0.11438741 = queryWeight, product of:
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.043425296 = queryNorm
0.1455159 = fieldWeight in 4366, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.0390625 = fieldNorm(doc=4366)
0.33333334 = coord(1/3)
0.25 = coord(1/4)
- Source
- Journal of the American Society for Information Science and Technology. 62(2011) no.4, S.643-653
-
Liu, X.; Zhang, J.; Guo, C.: Full-text citation analysis : a new method to enhance scholarly networks (2013)
0.00
0.001387099 = product of:
0.005548396 = sum of:
0.005548396 = product of:
0.016645188 = sum of:
0.016645188 = weight(_text_:science in 1044) [ClassicSimilarity], result of:
0.016645188 = score(doc=1044,freq=2.0), product of:
0.11438741 = queryWeight, product of:
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.043425296 = queryNorm
0.1455159 = fieldWeight in 1044, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.0390625 = fieldNorm(doc=1044)
0.33333334 = coord(1/3)
0.25 = coord(1/4)
- Source
- Journal of the American Society for Information Science and Technology. 64(2013) no.9, S.1852-1863
-
Liu, X.; Qin, J.: ¬An interactive metadata model for structural, descriptive, and referential representation of scholarly output (2014)
0.00
0.001387099 = product of:
0.005548396 = sum of:
0.005548396 = product of:
0.016645188 = sum of:
0.016645188 = weight(_text_:science in 1253) [ClassicSimilarity], result of:
0.016645188 = score(doc=1253,freq=2.0), product of:
0.11438741 = queryWeight, product of:
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.043425296 = queryNorm
0.1455159 = fieldWeight in 1253, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.0390625 = fieldNorm(doc=1253)
0.33333334 = coord(1/3)
0.25 = coord(1/4)
- Source
- Journal of the Association for Information Science and Technology. 65(2014) no.5, S.964-983
