• Journal of the Korean Society for information Management
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• v.16 no.4
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• pp.125-150
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• 1999

This study reviews various aspects of design of user interfaces in interactive information retrieval systems. Specially the study examines, 1) search related interfaces such as query processing, search strategies, and multilingual processing, and 2) browsing related interfaces such as document browsing and search result browsing. The main goals of this review are to characterize user interface techniques in information retrieval systems and to suggest potential future research direction and challenges.

• Journal of the Korean Society for information Management
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• v.41 no.1
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• pp.261-282
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• 2024

This study proposed and evaluated electroencephalography (EEG)-based and eye-tracking-based methods to determine relevance by utilizing users' implicit relevance feedback while navigating content in a digital library. For this, EEG/eye-tracking experiments were conducted on 32 participants using video, image, and text data. To assess the usefulness of the proposed methods, deep learning-based artificial intelligence (AI) techniques were used as a competitive benchmark. The evaluation results showed that EEG component-based methods (av_P600 and f_P3b components) demonstrated high classification accuracy in selecting relevant videos and images (faces/emotions). In contrast, AI-based methods, specifically object recognition and natural language processing, showed high classification accuracy for selecting images (objects) and texts (newspaper articles). Finally, guidelines for implementing a digital library interface based on EEG, eye-tracking, and artificial intelligence technologies have been proposed. Specifically, a system model based on implicit relevance feedback has been presented. Moreover, to enhance classification accuracy, methods suitable for each media type have been suggested, including EEG-based, eye-tracking-based, and AI-based approaches.

• Journal of the Korean Society for Library and Information Science
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• v.32 no.2
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• pp.259-276
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• 1998

This study is to contribute to develop adaptive information systems meeting inside information needs as well as represented information needs, and dealing with every levels of users and user's preferences. Also, this study is to present a method of developing adaptive information system through developing user profile using machine teaming and decision tree, applying relevance feedback using merged vector, and applying user feedback.

• Journal of rehabilitation welfare engineering & assistive technology
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• v.6 no.1
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• pp.37-43
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• 2012

We conducted a user-centered usability testing on the Android-based Mobile Augmentative Alternative Communication(AAC) Software. In this paper, we examined functionality, satisfaction, and ease of information searching for a specific function using a task scenario, and we investigated appropriateness of development purposes, contents, instructional strategies, usability, functions of management mode, and user interface of the mobile AAC to the communication needs of children who are nonverbal. We also examined user requirements, preference, satisfaction, and other personal opinions for the mobile AAC using an open feedback. In addition, we investigated users' preference for the size of mobile devices using 4.3", 5.0", and 7.0" mobile devices.

• 한국HCI학회:학술대회논문집
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• 2006.02a
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• pp.1305-1312
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• 2006

최근 들어 휴대성을 강조한 휴대폰이나 PDA 같은 다양한 모바일 기기의 등장으로 언제 어디서나 원하는 정보를 탐색할 수 있게 되었으나 기기는 점점 작아지는 반면, 기능은 증가하고, 많은 기기들이 데스크톱 인터페이스를 그대로 차용하여 작은 모바일 기기에는 적합하지 않은 결과를 낳고 있다. 따라서 본 연구는 청각 피드백을 이용한 공간정보 단서를 제공하여 작은 기기의 사용성을 높이는데 초점을 두고 있다. 이를 위하여, 실험 1에서는 두 가지 메뉴 구조에서 세 가지 청각 피드백의 영향을 조사하였는데, 격자메뉴와 한 줄 메뉴에서 각 청각피드백이 미치는 영향과 사용자의 선호도를 조사하였다. 실험 결과, 격자메뉴에서 수행이 좋았으나, 청각 피드백 유형별 수행 차이는 나타나지 않았고, 각 피드백에 대한 선호도에서도 차이가 나타나지 않았다. 실험 2에서는 실험 1에서 사용된 정보를 제공하는 청각적 피드백을 음 높이와 음의 개수 속성으로 세분화하여 PDA에서 메뉴 탐색 수행을 4블록으로 나누어 조사하도록 설계하였다. 실험 결과, 음 높이 속성만 갖는 피드백은 블록이 진행되면서 반응 시간에 있어서 피로도가 나타난 반면, 음 개수 속성만 갖는 피드백은 블록이 진행되어도 피로도가 나타나지 않았다. 한편, 두 속성을 모두 갖는 피드백은 블록이 진행되면서 보행 속도가 유의미하게 줄어드는 것을 발견하였다. 본 연구의 결과는 앞으로 유비쿼터스 환경에서 사용자에게 효율적인 청각 피드백을 통해 공간 정보를 제공함으로써 휴대기기의 사용성을 높일 수 있는 한 가지 가능성을 제시한다는 데 의의가 있다.

• The Journal of the Convergence on Culture Technology
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• v.7 no.1
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• pp.662-667
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• 2021

Vibrotactile feedback is a major function of the latest touch displays, which greatly improves the user's operability and immersion when interacting with the interface on the screen. In this study, we propose a vibrotactile actuator suitable for mounting on the back side of a mid- to large-sized display because it can generate a strong vibration output by applying an electrostatic force-based mechanism and can be manufactured in a thin flat panel type. The proposed actuator was developed in a structure capable of amplifying the vibration force by alternating up and down with electrostatic force by the upper and lower electrodes that are spaced apart from the electrically grounded mass suspended from a radial leaf spring. As a result of the performance evaluation, the developed bar-type module with two built-in actuators showed excellent vibration output of up to 3.3 g at 170 Hz, confirming the possibility of providing haptic feedback in medium and large touch displays.

• Archives of design research
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• v.13 no.4
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• pp.125-135
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• 2000

As computers have became popular and multimedia and internet are frequently used, the volume and exchange of information have explosively increased. Therefore, more organized information system is needed for a more efficient use of information. For this reason, the importance of information design and interface design is highly recognized. This thesis is to present the user-oriented interface design prototype based on the environmental analysis of the user and information design. For this purpose, the theoretical study of information design and the principle and elements of GUI (Graphic User Interface) design is preceded. Information design is to subdivide and organize information according to its characteristic, and to systemize information structure considering the interrelationship of information. GUI design, that is interface design based on graphics, should be made in consideration of GUI elements and principle for the user's easy access of information. As it is said, much information needs to be structurized systematically and also visualized as the interface design esthetically as well as functionally. In conclusion, this study presents the effectual user-oriented interface design prototype by researching many theories of information design and GUI design and applying such theories to GUI design.

• 한국정보교육학회:학술대회논문집
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• 2004.08a
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• pp.128-137
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• 2004

컨텐츠에 대한 처리 기술과 사용자 인터페이스의 발전으로 인해, 교육 현장에서 광범위하게 사용되는 교육도구로 컴퓨터가 자리매김하고 있다. 제한된 교실 환경에서 컴퓨터를 활용한 영어교육은 학습자들에게 흥미를 유발하고, 의사소통능력의 신장을 유도하는 등의 장점이 있으나, 수준에 따른 개별학습과 상호작용 유도, 개인차를 고려한 평가 등을 수행하기 어려운 문제점이 있다. 본 논문에서는 이러한 장점을 극대화하고 단점을 좌완하기 위해서 휴대폰의 국내 표준 플랫폼인 WIPI(Wireless Internet Platform for Interoperability)기반 영어 학습 시스템을 제안한다. 제안하는 시스템은 휴대 전화의 제한성을 극복하고, 이에 적합한 컨텐츠를 활용하면서, 교사의 역할을 대신해 줄 수 있는 지능형 교육 시스템을 도입하여 교사의 역할을 대신하여 피드백을 제공해 줄 수 있으며, 교사와 학생간의 상호작용을 유도하여 학습의 효과를 극대화 할 수 있을 것이다.

• The Journal of Society for e-Business Studies
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• v.18 no.2
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• pp.279-299
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• 2013

The problem of choosing the right product that will best fit a consumer's taste and preferences extends to the field of electronic commerce. However, e-commerce has been able to create a technological proxy for the social filtering process, known as online recommender systems (RSs). RSs aid users in filtering products and decisions on matters relating to personal taste. RSs have the potential to support and improve the quality of the decisions consumers make when searching for and selecting products and services online. However, most previous research on RSs has focused on the accuracy of the algorithms, with little emphasis on user interface and perspectives. This study identified transparency and feedback as possible ways to effectively evaluate RSs from the user's perspective. Thus, this research focused on examining and identifying the roles of transparency and feedback in recommender systems and how they affect users' attitudes toward the system. Results of the study showed that both transparency and feedback positively and significantly affected perceived trust, perceived value of the process, and perceived enjoyment. Furthermore, we found that perceived trust, perceived value of the process, and perceived enjoyment positively and directly affected users' intentions to use/reuse a recommender system.

• Archives of design research
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• v.13 no.3
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• pp.145-152
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• 2000

Since interactive systems that the user interaction is important factor can be very complex, its design process may have various testing and feedback based on continuous prototyping. The prototypes in this process function as medium to explore design problem and communicate opinions with another expert of project team. So prototyping strategy may be needed to enhance the design quality by focusing on the goals of project. This study clarifies critical issues around the prototypes and characteristics of interactive system to understand broad meaning of prototypes. And prototype model proposes as a framework for establishment of prototyping stategy.