Article: Design and development of a concept-based multi-document summarization system for research abstracts

Ou, S., Khoo, C.S.G., & Goh, D. (2008). Design and development of a concept-based multi-document summarization system for research abstracts. Journal of Information Science, 34(3), 308-326. Summary: This paper describes a concept-based multi-document summarization system that was developed to summarize sets of dissertation abstracts in sociology that might be retrieved by an information retrieval system or Web search engine in response to a user query. The summarization method developed in this study is a hybrid method comprising four major steps: Macro-level discourse parsing: An automatic discourse parsing method was developed to segment a dissertation abstract into several macro-level sections and identify which sections contain important research information; Information extraction: An information extraction method was developed to extract research concepts and relationships as well as other kinds of information from the micro-level structure (within sentences); Information integration: An information integration method was developed to integrate similar concepts and relationships...
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Article: Automatic multi-document summarization of research abstracts: Design and user evaluation

Ou, S., Khoo, C.S.G., & Goh, D. (2007). Automatic multi-document summarization of research abstracts: Design and user evaluation. Journal of the American Society for Information Science & Technology, 58(10), 1419-1435. Summary: This study developed a method for multi-document summarization of sociology dissertation abstracts. We did not use traditional sentence extraction approaches. Instead, a hybrid summarization method involving both extractive and abstractive techniques was used. This method focused on extracting and integrating similarities and differences across different documents to summarize a set of related documents. The identification of similarities and differences was based more on identifying research concepts and relationships expressed in the text, rather than words, phrases or sentences and rhetorical relations used in previous studies. To do that, the macro-level discourse structure (between sentences and segments) peculiar to sociology dissertation abstracts was analyzed to identify which segments of the text contain more important research information. Then the micro-level...
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Conference paper: Framework for analyzing organizational stories

Lee, L.-P., Liu, H.-W., Shi, D.-M., Khoo, C.S.G., & Pang, N. (2013). Developing a framework for analyzing organizational stories. In The 5th International Conference on Asia-Pacific Library and Information Education and Practice (A-LIEP 2013): Proceedings (pp. 260-271). Khon Kaen City, Thailand: University of Khon Kaen, Faculty of Humanties and Social Sciences. Summary: Stories are becoming an increasingly important knowledge management and knowledge sharing tool to communicate ideas, values and experiences both to internal organizational members and to external stakeholders. This paper reports an initial effort to develop a framework for the analysis of organizational stories. The framework has two major parts: the story framework comprising six elements, and the interaction/communication framework. The six elements of a story are: Background to the story—the context in the story itself, the prior situation and events leading up to the story. Core of the story—the essence or summary of the story, the...
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Conference paper: Categories of friends on social networking sites

Zhang, X., Gao, Q., Khoo, C., & Wu, A. (2013). Categories of friends on social networking sites: An exploratory study. In The 5th International Conference on Asia-Pacific Library and Information Education and Practice (A-LIEP 2013): Proceedings (pp. 244-259). Khon Kaen City, Thailand: University of Khon Kaen, Faculty of Humanties and Social Sciences. Abstract: The widespread use of social networking sites has transformed the ways people make, communicate with and manage their friends. This study seeks to find out students’ perception of the types of friends they have on their social networking sites (SNS), such as Facebook and Twitter, in comparison to offline friends, and the quality of these friendships. A questionnaire survey was administered to 104 graduate students in the Division of Information Studies at the Nanyang Technological University, Singapore. It was found that the main categories of friends on SNS are school friends, work-related friends, friends sharing...
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Conference paper: A user study of the Singapore Memory Portal to derive a taxonomy for content organization

Srieedar, J., & Khoo, C.S.G. (2013). A user study of the Singapore Memory Portal to derive a taxonomy for content organization. In Proceedings of the 2013 Digital Heritage International Congress, 28 Oct-1 Nov 2013, Marseille, France (IEEE catalog no. CFP1308W-USB, pp. 297-305). Summary: This paper reports an initial user study of a cultural heritage portal called Singapore Memory Portal that was set up in Singapore to collect people’s memories related to the history, culture, society, life and landscape of Singapore’s past. The study sought to find out users’ expectations of the content of the portal, how they search and browse the portal, and what they learn about particular historical or cultural topics from reading postings in the portal. The goal is to derive a taxonomy to organize the portals’ content for browsing and learning. For this initial study, 12 Singapore citizens were interviewed to find out what topics...
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Introduction

Welcome to my research blog! This blog gives an overview of my research projects and research directions. There is a separate page listed on the menu bar for the following areas: Natural language processing & text mining: multidocument summarization, sentiment analysis and information extraction Academic writing and thinking, including writing analytics Knowledge organization: ontologies, taxonomies and metadata Health informatics: data mining of intensive care unit patient information, & text mining of consumer drug reviews Information behaviour in social media sites and heritage portals Brief cv and publication list Summaries of recent papers below:...
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