• The Journal of Information Technology and Database
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• v.8 no.2
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• pp.1-15
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• 2001

In trying to bring about online CRM(customer relationship management), companies have paid much attention to eCRM. The key of eCRM is a recommendation system, which is being used by E-commerce sites to find products to purchase. To maintain a constant flow of marketing information and feedback it is important to staying in touch with customers. In this respect, eCRM becomes a serious business tool for sales activities. In this article we present tee case of Kookmin Internet banking eCRM welch is one of the first examples of implementing eCRM in commercial web site in Korea. We examine how Kookmin Internet banking develops eCRM and how it provides customized services to customers. We also explore the role of eCRM in Internet banking and the level of personalization technology used in Kookmin eCRM case.

• Journal of Information Technology Applications and Management
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• v.23 no.2
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• pp.239-261
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• 2016

Wide use of smart and high performing mobile device makes consumers use diverse distribution channels, composed of online and offline channel. Smart companies are trying to deploy omni channel. In order to successfully integrate these diverse channels, it is necessary to understand consumers' preference of channel choice. Thus, this study was focused on the influencing factors of channel preference such as price sensitivity, consumer innovativeness, time pressure, and need-for-touch. And this study compared these influencing factors between Korea and China, and drew meaningful message for e-commerce companies and offline distribution companies.

• Journal of Computing Science and Engineering
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• v.5 no.1
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• pp.51-70
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• 2011

This paper introduces a new credit card payment scheme called No Number Credit Card that can significantly reduce the possibility of credit card fraud. The proposed payment system is loosely based on Kerberos, a cryptographic framework that has stood the test of time. In No Number Credit Card, instead of card numbers, only payment tokens are exchanged between the customers and merchants. The tokens are generated based on the payment amount, payment type, client information, and merchant information. However, it does not contain the credit card number, so the merchant or a database hacker cannot acquire and illegally use any credit card numbers. The No Number Credit Card system is ideal for online e-commerce transactions and can be used with any credit card that users possess. It can be used with minor modifications to the current card payment system. We provide the principles of its operation through scenario analysis, a sample implementation, and a security analysis

• Management Science and Financial Engineering
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• v.11 no.3
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• pp.19-45
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• 2005

Collaborative filtering is one of the most common methods that e-commerce sites and Internet information services use to personalize recommendations. Collaborative filtering has the advantage of being able to use even sparse evaluation data to predict preference scores for new products. To date, however, no in-depth investigation has been conducted on how the data sparsity effect in customers' evaluation data affects collaborative filtering-based recommendation performance. In this study, we analyzed the sparsity effect and used a hybrid method based on customers' evaluations and purchases collected from an online bookstore. Results indicated that recommendation performance decreased monotonically as sparsity increased, and that performance was more sensitive to sparsity in evaluation data rather than in purchase data. Results also indicated that the hybrid use of two different types of data (customers' evaluations and purchases) helped to improve the recommendation performance when evaluation data were highly sparse.

• The Journal of Information Systems
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• v.15 no.4
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• pp.189-209
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• 2006

The progress of mobile internet technologies has changed user access to information. The mobile internet allows to obtain contents and services from wireless networks via mobile devices. The purpose of this study is th find out important factors that influence on the customer purchase intention by mobile internet environment. Base on TAM(Technology Acceptance Model) and the latest literature, a comprehensive set of constructs and hypotheses were compiled with a methodology for testing them. We suggested five factors that effect purchase intention in mobile internet environment: Enjoyment Ease of use, Usefulness, Mobility, Trust To validate the research model, we collected data from cellular phone user using an online survey. The results of this study are as follows. First enjoyment ease of un, usefulness, and mobility had positive effects on trust. Second, Usefulness, ease of use, and trust had positive effects on purchase intention to use mobile internet. Third, enjoyment and mobility did not have positive effects on purchase intention to use mobile internet. Based on these results, we suggest marketing strategies.

• Journal of Communications and Networks
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• v.17 no.2
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• pp.145-156
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• 2015

In recent years, electronic commerce and online social networks (OSNs) have experienced fast growth, and as a result, recommendation systems (RSs) have become extremely common. Accuracy and robustness are important performance indexes that characterize customized information or suggestions provided by RSs. However, nefarious users may be present, and they can distort information within the RSs by creating fake identities (Sybils). Although prior research has attempted to mitigate the negative impact of Sybils, the presence of these fake identities remains an unsolved problem. In this paper, we introduce a new weighted link analysis and influence level for RSs resistant to Sybil attacks. Our approach is validated through simulations of a broad range of attacks, and it is found to outperform other state-of-the-art recommendation methods in terms of both accuracy and robustness.

• Proceedings of the Korean Information Science Society Conference
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• 2001.04a
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• pp.631-633
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• 2001

상거래의 상품 정보를 기술하는 카탈로그는 전자 상거래의 상품 인지단계에서도 중요한 역할을 하며 대부분의 인터넷 쇼핑 몰에서 전자 카탈로그 저장소의 구축과 유지를 위해 많은 비용을 소모한다. 전자 상거래가 활발해지고 인터넷 쇼핑 몰이 급격히 늘어남에 따라 구축과 유지에 많은 비용이 드는 전자 카탈로그 저장소를 고유할 필요가 생겨났으며, 그에 걸맞는 소프트웨어 아키텍처가 요구되고 있다. 이 논문에서는 서로 이질적인 전자 카탈로그 저장소들이 분산되어 있는 환경에서도 각각의 카탈로그들이 상호 연동할 수 있는 컴포넌트 기반 아키텍쳐를 제시한다. 이 아키텍쳐에서 컴포넌트들은 CORBA IDL을 통해 통신을 하며 이로써 이질적인 전자 카탈로그 저장소의 상호연동이 가능해지며 시스템의 신축성과 확장성 역시 높아지게 된다.

• Journal of the Korean Society of Clothing and Textiles
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• v.35 no.12
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• pp.1425-1439
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• 2011

The present research developed and empirically examined a theoretical model called a Mobile Channel Extension Model for consumer behavior toward mobile commerce. We proposed three antecedents: compatibility of, subjective norm regarding, and media influence regarding mobile use for communication purposes that influence the attitude toward the subjective norm and media influences of mobile use for shopping. These in turn positively influenced the consume's intention to use mobile devices for shopping. A Structural equation modeling analysis, using the data collected from a national online survey of 524 U. S. multichannel shoppers, confirmed the proposed model. The theoretical implications of these effects were discussed and managerial suggestions were made for both academicians and practitioners.

• International Journal of Internet, Broadcasting and Communication
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• v.11 no.3
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• pp.71-76
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• 2019

In this paper, we propose a simple one-click marketing solution for mobile devices which can advertise a product which is embedded in a mobile video while watching the video on a smartphone. If a specific product of interest appears in the video to the user, one can simply click on the product in the video and a pop-up window with information about the product is proposed. The implementation of the system is expected to enable users to gain real-time information about the product while watching the video without having to search for the product again after watching the movie, and thereby facilitating more mobile commerce. We use a two-fold system to prevent the failure of tracking which often occurs on a single online tracking system, so that the user cannot always get the commercial product information.

• Journal of the Korea Society of Computer and Information
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• v.24 no.1
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• pp.145-149
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• 2019

Various supplementary authentication methods are used to supplement user authentication and authorization provided by existing password verification online1. In recent years, authentication and authorization methods using user attribute information have been studied and utilized in various services. User attribute information can be divided into static information and dynamic information. The existing methods focus on research to identify users using dynamic information or to generate challenge questions for user reauthentication. Static information such as a user's home address, school, company, etc. is associated with dynamic information such as location information. We propose a method to verify user attribute information by using the association between two attribute information. For this purpose, the static information of the user is verified by using the user's location record which is dynamic information. The experiment of this paper collects the dynamic information of the actual user and extracts the static information to verify the user attributes. And we implemented the user attribute information authentication system using the proposal verification method and evaluated the utility based on applicability, convenience, and security.