-
Li, Y.; Belkin, N.J.: ¬A faceted approach to conceptualizing tasks in information seeking (2008)
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- Date
- 22.11.2008 16:29:21
- Source
- Information processing and management. 44(2008) no.6, S.1822-1837
-
Li, Y.; Shawe-Taylor, J.: Advanced learning algorithms for cross-language patent retrieval and classification (2007)
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- Footnote
- Beitrag innerhalb eines Themenschwerpunkt "special issue on patent processing"
- Source
- Information processing and management. 43(2007) no.5, S.1183-1199
-
Xiao, D.; Ji, Y.; Li, Y.; Zhuang, F.; Shi, C.: Coupled matrix factorization and topic modeling for aspect mining (2018)
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- Abstract
- Aspect mining, which aims to extract ad hoc aspects from online reviews and predict rating or opinion on each aspect, can satisfy the personalized needs for evaluation of specific aspect on product quality. Recently, with the increase of related research, how to effectively integrate rating and review information has become the key issue for addressing this problem. Considering that matrix factorization is an effective tool for rating prediction and topic modeling is widely used for review processing, it is a natural idea to combine matrix factorization and topic modeling for aspect mining (or called aspect rating prediction). However, this idea faces several challenges on how to address suitable sharing factors, scale mismatch, and dependency relation of rating and review information. In this paper, we propose a novel model to effectively integrate Matrix factorization and Topic modeling for Aspect rating prediction (MaToAsp). To overcome the above challenges and ensure the performance, MaToAsp employs items as the sharing factors to combine matrix factorization and topic modeling, and introduces an interpretive preference probability to eliminate scale mismatch. In the hybrid model, we establish a dependency relation from ratings to sentiment terms in phrases. The experiments on two real datasets including Chinese Dianping and English Tripadvisor prove that MaToAsp not only obtains reasonable aspect identification but also achieves the best aspect rating prediction performance, compared to recent representative baselines.
- Source
- Information processing and management. 54(2018) no.6, S.861-873
-
Crespo, J.A.; Herranz, N.; Li, Y.; Ruiz-Castillo, J.: ¬The effect on citation inequality of differences in citation practices at the web of science subject category level (2014)
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- Abstract
- This article studies the impact of differences in citation practices at the subfield, or Web of Science subject category level, using the model introduced in Crespo, Li, and Ruiz-Castillo (2013a), according to which the number of citations received by an article depends on its underlying scientific influence and the field to which it belongs. We use the same Thomson Reuters data set of about 4.4 million articles used in Crespo et al. (2013a) to analyze 22 broad fields. The main results are the following: First, when the classification system goes from 22 fields to 219 subfields the effect on citation inequality of differences in citation practices increases from ?14% at the field level to 18% at the subfield level. Second, we estimate a set of exchange rates (ERs) over a wide [660, 978] citation quantile interval to express the citation counts of articles into the equivalent counts in the all-sciences case. In the fractional case, for example, we find that in 187 of 219 subfields the ERs are reliable in the sense that the coefficient of variation is smaller than or equal to 0.10. Third, in the fractional case the normalization of the raw data using the ERs (or subfield mean citations) as normalization factors reduces the importance of the differences in citation practices from 18% to 3.8% (3.4%) of overall citation inequality. Fourth, the results in the fractional case are essentially replicated when we adopt a multiplicative approach.
- Object
- Web of Science
- Source
- Journal of the Association for Information Science and Technology. 65(2014) no.6, S.1244-1256
-
Shen, J.; Yao, L.; Li, Y.; Clarke, M.; Wang, L.; Li, D.: Visualizing the history of evidence-based medicine : a bibliometric analysis (2013)
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- Abstract
- The aim of this paper is to visualize the history of evidence-based medicine (EBM) and to examine the characteristics of EBM development in China and the West. We searched the Web of Science and the Chinese National Knowledge Infrastructure database for papers related to EBM. We applied information visualization techniques, citation analysis, cocitation analysis, cocitation cluster analysis, and network analysis to construct historiographies, themes networks, and chronological theme maps regarding EBM in China and the West. EBM appeared to develop in 4 stages: incubation (1972-1992 in the West vs. 1982-1999 in China), initiation (1992-1993 vs. 1999-2000), rapid development (1993-2000 vs. 2000-2004), and stable distribution (2000 onwards vs. 2004 onwards). Although there was a lag in EBM initiation in China compared with the West, the pace of development appeared similar. Our study shows that important differences exist in research themes, domain structures, and development depth, and in the speed of adoption between China and the West. In the West, efforts in EBM have shifted from education to practice, and from the quality of evidence to its translation. In China, there was a similar shift from education to practice, and from production of evidence to its translation. In addition, this concept has diffused to other healthcare areas, leading to the development of evidence-based traditional Chinese medicine, evidence-based nursing, and evidence-based policy making.
- Date
- 28.10.2013 17:29:49
- Source
- Journal of the American Society for Information Science and Technology. 64(2013) no.10, S.2157-2172
-
Thomas, M.A.; Li, Y.; Sistenich, V.; Diango, K.N.; Kabongo, D.: ¬A multi-stakeholder engagement framework for knowledge management in ICT4D (2023)
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- Date
- 16.11.2023 18:55:29
- Source
- Journal of the Association for Information Science and Technology. 74(2023) no.12, S.1384-1400
-
Arora, S.K.; Li, Y.; Youtie, J.; Shapira, P.: Using the wayback machine to mine websites in the social sciences : a methodological resource (2016)
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- Abstract
- Websites offer an unobtrusive data source for developing and analyzing information about various types of social science phenomena. In this paper, we provide a methodological resource for social scientists looking to expand their toolkit using unstructured web-based text, and in particular, with the Wayback Machine, to access historical website data. After providing a literature review of existing research that uses the Wayback Machine, we put forward a step-by-step description of how the analyst can design a research project using archived websites. We draw on the example of a project that analyzes indicators of innovation activities and strategies in 300 U.S. small- and medium-sized enterprises in green goods industries. We present six steps to access historical Wayback website data: (a) sampling, (b) organizing and defining the boundaries of the web crawl, (c) crawling, (d) website variable operationalization, (e) integration with other data sources, and (f) analysis. Although our examples draw on specific types of firms in green goods industries, the method can be generalized to other areas of research. In discussing the limitations and benefits of using the Wayback Machine, we note that both machine and human effort are essential to developing a high-quality data set from archived web information.
- Source
- Journal of the Association for Information Science and Technology. 67(2016) no.8, S.1904-1915
-
Cao, Q.; Lu, Y.; Dong, D.; Tang, Z.; Li, Y.: ¬The roles of bridging and bonding in social media communities (2013)
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- Source
- Journal of the American Society for Information Science and Technology. 64(2013) no.8, S.1671-1681
-
Song, J.; Huang, Y.; Qi, X.; Li, Y.; Li, F.; Fu, K.; Huang, T.: Discovering hierarchical topic evolution in time-stamped documents (2016)
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- Source
- Journal of the Association for Information Science and Technology. 67(2016) no.4, S.915-927
-
Luo, P.; Chen, K.; Wu, C.; Li, Y.: Exploring the social influence of multichannel access in an online health community (2018)
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- Source
- Journal of the Association for Information Science and Technology. 69(2018) no.1, S.98-109
-
Liu, J.; Li, Y.; Hastings, S.K.: Simplified scheme of search task difficulty reasons (2019)
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- Source
- Journal of the Association for Information Science and Technology. 70(2019) no.5, S.526-529
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Li, Y.; Kobsa, A.: Context and privacy concerns in friend request decisions (2020)
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- Source
- Journal of the Association for Information Science and Technology. 71(2020) no.6, S.632-643
-
Zhang, Y.; Li, Y.: ¬A user-centered functional metadata evaluation of moving image collections (2008)
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- Source
- Journal of the American Society for Information Science and Technology. 59(2008) no.8, S.1331-1346
-
Li, Y.: Exploring the relationships between work task and search task in information search (2009)
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- Source
- Journal of the American Society for Information Science and Technology. 60(2009) no.2, S.275-291
-
Li, Y.; Belkin, N.J.: ¬An exploration of the relationships between work task and interactive information search behavior (2010)
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- Source
- Journal of the American Society for Information Science and Technology. 61(2010) no.9, S.1771-1789
-
Yang, M.; Kiang, M.; Chen, H.; Li, Y.: Artificial immune system for illicit content identification in social media (2012)
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- Source
- Journal of the American Society for Information Science and Technology. 63(2012) no.2, S.256-269
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Li, Y.; Xu, S.; Luo, X.; Lin, S.: ¬A new algorithm for product image search based on salient edge characterization (2014)
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- Source
- Journal of the Association for Information Science and Technology. 65(2014) no.12, S.2534-2551
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Li, Y.; Crescenzi, A.; Ward, A.R.; Capra, R.: Thinking inside the box : an evaluation of a novel search-assisting tool for supporting (meta)cognition during exploratory search (2023)
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- Source
- Journal of the Association for Information Science and Technology. 74(2023) no.9, S.1049-1066
