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1School of Information Management of Nanjing University, Peoples Republic of China; 2Jiangsu Key Laboratory of Data Engineering and Knowledge Service, Nanjing University, Peoples Republic of China
[Purpose/significance] To optimize the term hierarchy in the manual e-government thesaurus, we combine the mainstream knowledge organization technology to form a complete set of ontology automation construction scheme. [Method/process] We build an e-government knowledge base by using subject words in the Comprehensive E-government Thesaurus as the term set and encyclopedia text as the corpus. The specific work includes the extraction of semantic features from the bag-of-words model, determination of the number of clusters by linear and nonlinear dimensionality reduction, division of terms by spectral clustering, social network analysis to determine the class label, and storing knowledge ontology via OWL. [Result/Conclusion] The recall rate of term hierarchy in the ontology is excellent, indicating the ontology has good knowledge extensibility, and also proving the efficiency of the scheme proposed in this work. Besides, the application model of a term hierarchy in information retrieval can show a richer semantic relation than the original thesaurus to guide the retrieval extension of government information resources.
4:15pm - 4:30pm ID: 284 / PS-15: 2 Long Papers Topics: Domain-Specific Informatics Keywords: Open Government Data (OGD); findability; accessibility; user behaviors; transaction log analysis
Understanding Users’ Accessing Behaviors to Local Open Government Data via Transaction Log Analysis
Fanghui Xiao, Zhendong Wang, Daqing He
University of Pittsburgh, USA
The rapid development of Open Government Data (OGD) and the increasing attention on data use/reuse have stimulated many studies on data-related issues. However, the findability of OGD is still one of the major challenges. Aiming to ameliorate the situation that “data is hard to find”, this paper examines OGD users’ needs and accessing behaviors when interacting with local OGD portals. Transaction log analysis and web content mining were used in order to obtain insights from large groups of OGD users in an unobtrusive manner. Through analyzing transaction log data from three local OGD portals, including Open Data Philly (opendataphilly.org), Western Pennsylvania Regional Data Center (wprdc.org) and Analyze Boston (data.boston.gov), our study shows that users relied on different channels to enter local OGD portals, and such channels have different impacts on user success in finding the sought-after data. We also find that OGD users prefer browsing over searching when inside the portals, the utilization of different browsing entries, and users’ data needs.
4:30pm - 4:45pm ID: 337 / PS-15: 3 Long Papers Topics: Archives; Data Curation; and Preservation Keywords: federal data curation, records schedules, digital preservation
Scientific Data Management in the Federal Government: A Case Study of NOAA and Responsibility for Preserving Digital Data
Adam Kriesberg, Jacob Kowall
Simmons University, USA
In this paper, we examine the ways in which the evolution of federal and agency-specific data management policies has affected and continues to affect the long-term preservation of digital scientific data produced by the United States government. After reviewing the existing literature on the role of archival theory and practice in the preservation of scientific data, we present the case of the National Oceanic and Atmospheric Administration (NOAA) to analyze how data management activities at this agency are shaped by legislative mandates as well as both government-wide and agency-specific information-management policies. Through the connected network of law, federal policy, agency policy, and the records schedules which govern recordkeeping practice in the federal government, we propose a number of further questions on how government agencies can effectively provide for the management of scientific data as federal records.
4:45pm - 4:55pm ID: 232 / PS-15: 4 Short Papers Topics: Social Media and Social Computing Keywords: Social Media Users, Information Sharing Behavior, Setting Limits, Influencing Factors
Social Media Users’ Behavior of Setting Limits in Information Sharing: A Heuristic Study Based on WeChat Moments
Guangchun Zheng, Zelong Zhao
Renmin University, People's Republic of China
Social media has become an important platform for users to share information in recent years. A large number of active users are sharing their daily lives and social issues in various platforms. At the same time, an interesting phenomenon is that functions like "three days visible" and "selected contacts visible" are also popular among users. In order to explore the information sharing behavior from the perspective of why users set these limits, we made a 15-day observation on 21 college students' sharing behavior on WeChat Moments and conducted in-depth interviews with 16 of them. The study summarizes the characteristics of users who set different types of limits from the observation. Sixteen factors influencing the behavior of setting limits were identified and categorized into three dimensions: social, psychological and technical.
4:55pm - 5:05pm ID: 320 / PS-15: 5 Short Papers Topics: Library and Information Science Keywords: open data, public libraries, data services, library services, government information
Open Data in Public Libraries: Gauging Activities and Supporting Ambitions
Kaitlin Fender Throgmorton, Bree Norlander, Carole L. Palmer
University of Washington, USA
As the open data movement grows, public libraries must assess if and how to invest resources in this new service area. This paper reports on a recent survey on open data in public libraries across Washington state, conducted by the Open Data Literacy project (ODL) in collaboration with the Washington State Library. Results document interests and activity in open data across small, medium, and large libraries in relation to traditional library services and priorities. Libraries are particularly active in open data through reference services and are beginning to release their own library data to the public. While capacity and resource challenges hinder progress for some, many libraries, large and small, are making progress on new initiatives, including strategic collaborations with local government agencies. Overall, the level and range of activity suggest that Washington state public libraries of all sizes recognize the value of open data for their communities, with a groundswell of libraries moving beyond ambition to action as they develop new services through evolution and innovation.