Browsing by Author "Yang, Seungwon"

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    Application Software
    Yang, Seungwon (2009-10-07)
    This module covers commonly used application software, which are specifically designed for the creation and development of digital library (DL) systems and similar types of collections and services, such as open access archives.
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    Automatic Identification of Topic Tags from Texts Based on Expansion-Extraction Approach
    Yang, Seungwon (Virginia Tech, 2014-01-22)
    Identifying topics of a textual document is useful for many purposes. We can organize the documents by topics in digital libraries. Then, we could browse and search for the documents with specific topics. By examining the topics of a document, we can quickly understand what the document is about. To augment the traditional manual way of topic tagging tasks, which is labor-intensive, solutions using computers have been developed. This dissertation describes the design and development of a topic identification approach, in this case applied to disaster events. In a sense, this study represents the marriage of research analysis with an engineering effort in that it combines inspiration from Cognitive Informatics with a practical model from Information Retrieval. One of the design constraints, however, is that the Web was used as a universal knowledge source, which was essential in accessing the required information for inferring topics from texts. Retrieving specific information of interest from such a vast information source was achieved by querying a search engine's application programming interface. Specifically, the information gathered was processed mainly by incorporating the Vector Space Model from the Information Retrieval field. As a proof of concept, we subsequently developed and evaluated a prototype tool, Xpantrac, which is able to run in a batch mode to automatically process text documents. A user interface of Xpantrac also was constructed to support an interactive semi-automatic topic tagging application, which was subsequently assessed via a usability study. Throughout the design, development, and evaluation of these various study components, we detail how the hypotheses and research questions of this dissertation have been supported and answered. We also present that our overarching goal, which was the identification of topics in a human-comparable way without depending on a large training set or a corpus, has been achieved.
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    Between a Rock and a Cell Phone: Social Media Use during Mass Protests in Iran, Tunisia and Egypt
    Kavanaugh, Andrea L.; Yang, Seungwon; Sheetz, Steven D.; Li, Lin Tzy; Fox, Edward A. (Department of Computer Science, Virginia Polytechnic Institute & State University, 2011-05-01)
    In this paper we examine the use of social media, and especially Twitter, in Iran, Tunisia and Egypt during the mass political demonstrations and protests in June 2009, December 2010 - January 2011, and February 2011, respectively. We compare this usage with methods and findings from other studies on the use of Twitter in emergency situations, such as natural and man-made disasters. We draw on our own experiences and participant-observations as an eyewitness in Iran (first author), and on Twitter data from Iran, Tunisia and Egypt. In these three cases, Twitter filled a unique technology and communication gap at least partially. We summarize suggested directions for future research with a view of placing this work in the larger context of social media use in conditions of crisis and social convergence.
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    Collaborative Research: Curriculum Development for Digital Library Education
    Fox, Edward A.; Yang, Seungwon; Wildemuth, Barbara M.; Pomerantz, Jeffrey P.; Oh, Sanghee (2006-05-01)
    This presentation provides an update on the Digital Library Curriculum Development project, including its development and evaluation plan, project timeline, and emerging objectives.
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    Collecting, Analyzing and Visualizing Tweets using Open Source Tools
    Yang, Seungwon; Kavanaugh, Andrea L. (Department of Computer Science, Virginia Polytechnic Institute & State University, 2011)
    This tutorial will teach participants how to collect, analyze and visualize results from twitter data. We will demonstrate several different free, open-source web-based tools that participants can use to collect twitter data (e.g., Archivist, 140kit.com, TwapperKeeper), and show them a few different methods, tools or programs they can use to analyze the data in a given collection. Finally, we will show participants visualization tools and programs they can use to present the analyses, such as tag clouds, graphs and other data clustering techniques. As much as possible this will be a hands-on tutorial, so participants can learn by making their own twitter data collection, analysis and visualization as part of the tutorial.
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    The Core: Digital Library Education in Library and Information Science Programs
    Pomerantz, Jeffrey P.; Oh, Sanghee; Yang, Seungwon; Fox, Edward A.; Wildemuth, Barbara M. (Corporation for National Research Initiatives, 2006-11-01)
    This paper identifies the "state of the art" in digital library education in Library and Information Science programs, by identifying the readings that are assigned in digital library courses and the topics of these readings. The most frequently-assigned readings are identified at multiple units of analysis, as are the topics on which readings are most frequently assigned. While no core set of readings emerged, there was significant consensus on the authors to be included in digital library course reading assignments, as well as the topics to be covered. Implications for the range of assigned readings and topics for digital library education in library science education are discussed.
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    Crawling
    Fox, Edward A.; Khandeparker, Ashwin S. (2012-11-28)
    This module covers the basic concepts of Web crawling, policies, techniques and how these can be applied to Digital Libraries.
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    Crisis, Tragedy, and Recovery Network Digital Library (CTRnet) + Web Archiving in Qatar and VT
    Fox, Edward A.; Yang, Seungwon; CTRnet Team (2013-07-01)
    This presentation describes the Crisis, Tragedy, and Recovery Network's digital library development and web archiving activities in Qatar and Virginia Tech. The presentation covers project goals, archiving tasks, dissemination efforts, and the IDEAL project.
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    Curriculum Development for Digital Libraries
    Pomerantz, Jeffrey P.; Wildemuth, Barbara M.; Oh, Sanghee; Fox, Edward A.; Yang, Seungwon (2006)
    The Virginia Tech Department of Computer Science (VT CS) and the University of North Carolina at Chapel Hill's School of Information and Library Science (UNC SILS) have launched a digital library curriculum development project. This presentation outlines the educational resources that will be developed based on the 2001 ACM/IEEE-CS Computing Curriculum. Lesson plans and modules will be developed, evaluated by subject specialists, and then pilot tested in computer science (CS) and library and information science (LIS) courses. An analysis of papers on digital library-related topics from several corpora was performed to identify the work that has been performed on these topics; this analysis will guide the initial stages of this curriculum development.
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    Digital Library Curriculum Development Progress report
    Fox, Edward A.; Yang, Seungwon; Wildemuth, Barbara M.; Pomerantz, Jeffrey P. (2006-08-11)
    This presentation provides an update on the Digital Library Curriculum Development project, specifically its development and evaluation plan, project timeline, and emerging objectives.
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    Digital Library Curriculum Development Project Overview
    Fox, Edward A.; Yang, Seungwon; Wildemuth, Barbara M.; Pomerantz, Jeffrey P.; Oh, Sanghee (2006)
    This presentation provides an update on the Digital Library Curriculum Development project. It describes the project's development and evaluation plan, timeline, and objectives.
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    Digital Library Curriculum Development: Enhancing Education and Comprehension of NDLTD
    Fox, Edward A.; Yang, Seungwon; Wildemuth, Barbara M.; Pomerantz, Jeffrey P. (2006)
    This slideshow describes the Digital Library Curriculum Development project, a collaborative effort between faculty and students from Virginia Tech's Department of Computer Science and the University of North Carolina at Chapel Hill's School of Library and Information Science. This presentation addresses the development of a digital library curriculum that incorporates content from various disciplines and covers the challenges of organizing digital library topics into logical groupings.
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    Digital Library Education in Computer Science Programs
    Pomerantz, Jeffrey P.; Oh, Sanghee; Wildemuth, Barbara M.; Yang, Seungwon; Fox, Edward A. (Department of Computer Science, Virginia Polytechnic Institute & State University, 2007)
    In an effort to identify the “state of the art” in digital library education in computer science (CS) programs, we analyzed CS courses on digital libraries and digital library-related topics. Fifteen courses that mention digital libraries in the title or short description were identified; of these, five are concerned with digital libraries as the primary topic of the course. The readings from these five courses were analyzed further, in terms of their authors and the journals in which they were published.
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    DL Architectures
    Yang, Seungwon; Fox, Edward A. (2009-10-07)
    This module covers digital library architectures, specifically federated architectures, distributed architectures, and service-oriented architectures.
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    Emergency Informatics and Digital Libraries: Workshop for JCDL 2012
    Yang, Seungwon; Fox, Edward A. (2012-06-01)
    There is growing global awareness of the need for information in connection with emergencies, crises, tragedies, disasters, and related recovery activities. Yet, there is little integration of the diverse types of related information, minimal connection with the digital library community, and almost no awareness of the need for related digital library research and development. This workshop will bring together key stakeholders from the many agencies and organizations in the area, as well as researchers with interdisciplinary perspectives, to explore these opportunities with those in the DL community who are interested. This will build upon work on the NSF-funded Crisis, Tragedy, and Recovery Network (www.ctrnet.net) DL project, and its collaboration with the Internet Archive, to identify, capture, preserve, and make accessible information about worldwide natural and manmade disasters as they occur. The CTRnet team will help with accomplishing the objectives listed below, ensuring a permanent record of findings and information shared during or after the meeting.
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    Evaluation of a Curriculum for Digital Libraries
    Pomerantz, Jeffrey P.; Wildemuth, Barbara M.; Oh, Sanghee; Yang, Seungwon; Fox, Edward A. (2008)
    This poster discusses the purpose and mission of the Digital Libraries Curriculum Development project. The project aims to evaluate digital library curricula, develop course instruction modules for digital library programs, provide expert-led course evaluations, and organize field evaluations by instructors and students.
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    Extending the 5S Framework of Digital Libraries to support Complex Objects, Superimposed Information, and Content-Based Image Retrieval Services
    Murthy, Uma; Kozievitch, Nadia; Leidig, Jonathan; Torres, Ricardo da Silva; Yang, Seungwon; Goncalves, Marcos A.; Delcambre, Lois M. L.; Archer, David W.; Fox, Edward A. (Department of Computer Science, Virginia Polytechnic Institute & State University, 2010)
    Advanced services in digital libraries (DLs) have been developed and widely used to address the required capabilities of an assortment of systems as DLs expand into diverse application domains. These systems may require support for images (e.g., Content-Based Image Retrieval), Complex (information) Objects, and use of content at fine grain (e.g., Superimposed Information). Due to the lack of consensus on precise theoretical definitions for those services, implementation efforts often involve ad hoc development, leading to duplication and interoperability problems. This article presents a methodology to address those problems by extending a precisely specified minimal digital library (in the 5S framework) with formal definitions of aforementioned services. The theoretical extensions of digital library functionality presented here are reinforced with practical case studies as well as scenarios for the individual and integrative use of services to balance theory and practice. This methodology has implications that other advanced services can be continuously integrated into our current extended framework whenever they are identified. The theoretical definitions and case study we present may impact future development efforts and a wide range of digital library researchers, designers, and developers.
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    Further Development of a Digital Library Curriculum: Evaluation Approaches and New Tools
    Yang, Seungwon; Wildemuth, Barbara M.; Kim, Seonho; Murthy, Uma; Pomerantz, Jeffrey P.; Oh, Sanghee; Fox, Edward A. (2007)
    This presentation is a follow-up to our ICADL 2006 paper and discusses our progress over the past year in developing a digital library curriculum. It presents and describes the current curriculum framework, which now includes ten modules and 41 sub-modules. It provides an overview of the curriculum development lifecycle, and our progress through that lifecycle. In particular, it reports on our evaluation of the modules that have been drafted. It concludes with a description of two new technologies: Superimposed Information (SI) to help resource presentation in a module and Visual User model Data Mining (VUDM) to help long-term module upgrade by visualizing the user community and its trends.
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    Half-Day Tutorial: Collecting, Analyzing, and Visualizing Tweets Using Open Source Tools
    Yang, Seungwon; Kavanaugh, Andrea L. (2011-06-01)
    This tutorial introduces various open source tools and methods to archive tweets on a user's local machine and convert them into topic clouds for quick content analysis. For more in-depth techniques such as n-grams and term extraction are introduced along with PHP/Python scripting.
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    I-Schools as a Natural Home for Digital Libraries Education
    Wildemuth, Barbara M.; Pomerantz, Jeffrey P.; Oh, Sanghee; Yang, Seungwon; Fox, Edward A. (2009-01-19)
    Given that digital libraries (DLs) bring together technology, information, and people who use information, it can easily be argued that i-schools should play a central role in educating DL professionals. This study examines the existing roles that i-schools play in DL education from two different vantage points: their offering of DL courses and their participation in a DL curriculum development project. In addition, we explore the potential to expand the iSchools Caucus by recruiting those schools that a reactive in DL education efforts (i.e., those that offer courses or participate in curriculum development) but are not yet members of the Caucus. DL courses in the i-schools were further analyzed, in terms of the topics covered, the textbooks used, and the types of assignments used. This analysis was based on the seven course syllabi available on the open Web.