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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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The Journal of Society for e-Business Studies
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Journal DOI :
Society for e-Business Studies
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Volume & Issues
Volume 14, Issue 4 - Nov 2009
Volume 14, Issue 3 - Aug 2009
Volume 14, Issue 2 - May 2009
Volume 14, Issue 1 - Feb 2009
Selecting the target year
Collaborative Filtering by Consistency Based Trust Definition
Kim, Hyoung-Do ;
The Journal of Society for e-Business Studies, volume 14, issue 1, 2009, Pages 1~11
Many neighbors are needed for making the recommendation quality better and stable in collaborative filtering. Furthermore, the quality is not so good mainly due to a reason that high similarity between two users does not guarantee the same preference to items considered for recommendation. Dissimilar users who have consistency in item selection can be useful for predicting preferences. This paper proposes a new collaborative filtering method, defining trust based on consistency for improving this phenomenon. Empirical studies show that such a method reduces the number of neighbors required to make the recommendation quality stable and the recommendation quality itself is also significantly improved.
A Methodology for u-Service Business Model Diagram and Analysis
Lee, Nam-Yeon ; Kwon, Oh-Byung ;
The Journal of Society for e-Business Studies, volume 14, issue 1, 2009, Pages 13~34
As ubiquitous computing technology is proliferating, a wider range of u-services applying ubiquitous computing technology has been implemented and some of the u-services have been actively considered for commercialization. Accordingly, establishing corresponding business models based on u-services also have been increased. However, structured methodologies to build u-service business models are still in its very early age. Moreover, since most of the legacy business model formulation and analysis methodologies have stressed on conventional or digital services, not u-services. Hence, the purpose of this paper is to propose a structured methodology of formulating and analyzing business models for u-services. An illustrative example is described to show the feasibility of the proposed methodology. To do so, Business Model Diagram (BMD), which adopts model components for u-services, is newly developed.
Pattern-based Analysis of Ubiquitous Process Design Based on Active Rules
Jung, Jae-Yoon ; Park, Jong-Hun ;
The Journal of Society for e-Business Studies, volume 14, issue 1, 2009, Pages 35~56
Many process modeling techniques, such as Petri-net, UML Activity Diagram, and EPC, are used to design process models. In this paper, we analyze ubiquitous process design based on workflow patterns. In particular, we focus on process design using active rules that have the form of Event-Condition-Action, and deal with the WS-ECA language, which was devised for ubiquitous web services coordination. We first check whether workflow patterns can be designed with ECA rules, and we then provide WS-ECA representations for ECA rules of the patterns. The contribution of this paper is that ECA rule-based process models were presented based on workflow patterns and they can be a guideline for ubiquitous process modeling.
A Hybrid Method of Storing XML Data Using RDBMS
Jeon, Chan-Hoon ; Kang, Hyun-Chul ;
The Journal of Society for e-Business Studies, volume 14, issue 1, 2009, Pages 57~79
As the Web-based e-Business prevails, the volume of XML data on the Web is getting larger than ever. Although much research has been done on decomposing and storing XML data in RDB, which is now the most popular storage for XML, and on processing XML queries through their SQL counterparts, little attention was paid to how to alleviate the burden of storing massive volume of XML data. In this paper, we propose a hybrid method of storing XML data in RDB, whereby the unit of storage could be an XML subtree as well as an XML node. The part of XML data whose nodes were separately stored could be reformed into an XML subtree for storing when it gets rarely queried or less valuable for reference as time goes by. With this method, we designed and implemented a hybrid XML storage and query processing system, comparing it with the conventional system where an XML node is the only unit of storage. Through experiments, we compared storage efficiency and query processing performance, validating the effectiveness of our proposed system.
Logical Design of Product Ontology in Relational Databases
Lee, Hyun-Ja ; Shim, Jun-Ho ;
The Journal of Society for e-Business Studies, volume 14, issue 1, 2009, Pages 81~92
In order to use a RDBMS as the repository for product information, it is essential that the ontological query be processed effectively and answered properly, satisfying the user's expectations for an ontological query process. To be well-processed ontological queries, the key point is whether the various semantic relationships among the concepts of the product information are likewise well-processed. For feasibly processing a semantic query, we need to consider how the product ontology data is designed and stored in RDBMS. In this paper, we present how a RDB schema for the product ontology could be designed and queried.
Developing Price Response Functions for Internet Content Services
Lee, Jung-Woo ; Lee, Se-Yoon ;
The Journal of Society for e-Business Studies, volume 14, issue 1, 2009, Pages 93~120
Content services on the Internet is getting attention as a new business model, selling digital content in real-time on the web. However, most of these content-based business is based on advertisement model rather than direct-payment-based business model. One of the difficulty in setting up charge-based content service is that the pricing paradigm of digital content is different from traditional pricing of products or services. The objective of this study is to empirically derive the feasible price response functions for these content services. Based on conjoint analysis of popular attributes of digital content, several price response function models were fitted against the conjoint data, using online movie viewers' preferences for different attributes of the service. Fitted function models were linear, multiplicative, exponential, attraction, and Gutenberg models. attraction model was found to be well-fit with the data for several specific combinations of attributes. Implications for pricing strategy is discussed at the end.
A Study on Consumer's Acceptance of Medical Internet Marketing According to Medical Departments
Lee, Ki-Kwang ; Jung, You-Soo ; Han, Chang-Hee ;
The Journal of Society for e-Business Studies, volume 14, issue 1, 2009, Pages 121~142
In this study, the marketing activity of medical service providers via Internet was considered as a new technology for approaching this problem and the consumers' acceptance of the new marketing activity was analyzed through the TAM (Technology Acceptance Model) path analysis. The path analysis was conducted for the non-insured medical departments and the insured medical departments. The path analysis revealed that the consumers felt usefulness of the marketing activity of non-insured medical service providers, which means that they have intention to accept and are satisfied with the Internet marketing activity provided by non-insured medical service departments. On the other hand, in the case of insured medical service, it was clarified that the 'easy of use' preferentially affects the users' intention of accepting the marketing activity rather than 'usefulness'.
Efficient Storage Techniques for Materialized Views Using Multi-Zoned Disks in OLAP Environment
Chang, Jae-Young ;
The Journal of Society for e-Business Studies, volume 14, issue 1, 2009, Pages 143~160
In determining the performance of OLAP database applications, the structure and the effective access methods to the underlying disk system is a significant factor. In recent years, hard disks are designed with multiple physical zones where seek times and data transfer rates vary across the zones. However, there is little consideration of multi-zone disks in previous works. Instead, they assumed a traditional disk model that comes with many simplifying assumptions such as an average seek-time and a single data transfer rate. In this paper, we propose a technique storing a set of materialized views into the multi-zoned disks in OLAP environment dealing with large sets of data. We first present the disk zoning algorithm of materialized views according to the access probabilities of each views. Also, we address the problem of storing views in the dynamic environment where data are updated continuously. Finally, through experiments, we prove the performance improvement of the proposed algorithm against the conventional methods.