Diese Datenbank enthält über 40.000 Dokumente zu Themen aus den Bereichen Formalerschließung – Inhaltserschließung – Information Retrieval.
© 2015 W. Gödert, TH Köln, Institut für Informationswissenschaft / Powered by litecat, BIS Oldenburg (Stand: 28. April 2022)
1Lim, J. ; Kang, S. ; Kim, M.: Automatic user preference learning for personalized electronic program guide applications.
In: Journal of the American Society for Information Science and Technology. 58(2007) no.9, S.1346-1356.
Abstract: In this article, we introduce a user preference model contained in the User Interaction Tools Clause of the MPEG-7 Multimedia Description Schemes, which is described by a UserPreferences description scheme (DS) and a UsageHistory description scheme (DS). Then we propose a user preference learning algorithm by using a Bayesian network to which weighted usage history data on multimedia consumption is taken as input. Our user preference learning algorithm adopts a dynamic learning method for learning real-time changes in a user's preferences from content consumption history data by weighting these choices in time. Finally, we address a user preference-based television program recommendation system on the basis of the user preference learning algorithm and show experimental results for a large set of realistic usage-history data of watched television programs. The experimental results suggest that our automatic user reference learning method is well suited for a personalized electronic program guide (EPG) application.
Inhalt: In-depth articles: Applications of MPEG-7 tools
Anmerkung: Beitrag eines Themenschwerpunktes
2Heinrichs, J.H. ; Lim, K.-S. ; Lim, J.-S. ; Spangenberg, M.A.: Determining factors of academic library Web site usage.
In: Journal of the American Society for Information Science and Technology. 58(2007) no.14, S.2325-2334.
Abstract: This study develops three alternative models of academic library Web site usage based on the Technology Acceptance Model (TAM). The three alternative models depict relationships among various intrinsic and extrinsic determinant factors of an academic library's Web site usage. The four factors included in the models are perceived ease-of-use, perceived usefulness, service functionality, and task functionality. These four factors are hypothesized to affect directly or indirectly both factors of satisfaction and intention-to-use. LISREL analysis using survey data shows that the best-fit model is the Dual Mediation Impact Model. Research and managerial implications for the academic library are discussed. Future research directions and limitations also are provided.
Themenfeld: Internet ; Benutzerstudien
3Heinrichs, J.H. ; Lim, J.-S.: Model for organizational knowledge creation and strategic use of information.
In: Journal of the American Society for Information Science and Technology. 56(2005) no.6, S.620-629.
Abstract: Nimble competitors competing in a dynamic global marketspace increasingly characterize the current environment faced by many organizations. Providing the organization's knowledge workers with the tools and technology to mine information and generate insights has become a key issue facing organizations. In this study we investigate the potential combined impact of the use of organizational decision models and competitive intelligence tool proficiency an knowledge creation and strategic use of information competence. Regression analysis results show significant main and interaction effects of the organizational decision models and competitive intelligence tool proficiency an four identified factors of knowledge creation and strategic use of information competence: pattern discovery, strategy appraisal, insight generation, and solution formulation. Organizational implications and future research directions are discussed.