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서비스 매쉬업 개발자를 위한 유사도 기반 서비스 추천 방법
김현승(HyunSeung Kim),고인영(InYoung Ko) Korean Institute of Information Scientists and Eng 2017 정보과학회논문지 Vol.44 No.9
As web service technologies are widely used, there have been many efforts to develop approaches for recommending appropriate web services to users in complex and dynamic service environments. In addition, for the effective development of service mashups, service recommender systems that are specialized for service composition have been developed. However, existing service recommender systems for service mashups are not effective at recommending services in a personalized manner that reflect developers’ preferences. To deal with this issue, we propose an approach that recommends services based on the similarities between mashup developers who have developed similar service mashups. The proposed approach is then evaluated by using the mashup data retrieved from ProgrammableWeb. The evaluation results clearly show that the proposed approach is an effective way of improving service recommendations compared to the traditional user-based collaborative filtering algorithm.
사물인터넷 환경에서 지리적 응집도를 고려한 동적 서비스 검색방법
백경덕(KyeongDeok Baek),김민협(MinHyeop Kim),고인영(InYoung Ko) Korean Institute of Information Scientists and Eng 2016 정보과학회논문지 Vol.43 No.8
In Internet of Things (IoT) environments, users are required to search for IoT devices necessary to access services for accomplishing their tasks. As IoT technologies advance, a user task will utilize various types of IoT-based services that are deployed in an IoT environment. Therefore, to accomplish a user task effectively, the services that utilize IoT devices need to be found in a certain geographical region. In addition, the service discovery needs to be accomplished in a stable manner while considering dynamically changing IoT environments. To deal with these issues, we propose two service discovery methods that consider geographic cohesiveness of services in IoT environments. We compare the effectiveness of the proposed methods against a traditional service discovery algorithm that does not consider geographic cohesiveness.
가사활동을 돕는 서비스 로봇(Personal Robot)의 시스템 설계
주정현(Junghyun Chu),노학종(Hakjong Noh),최문택(Mun-Taek Choi),김문상(Munsang Kim),고인영(Inyoung Ko),박종우(Chongwoo Park) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11
This paper aims one system to combine components that is Personal Robot to help housekeeping in complex environment of house. The needed skills are Cognitive environment, Navigation, Mobile Manipulation, Object recognition and FT(Force Torque) Sensor Value Control. This research is used by 2-differential-wheels platform robot. Various components make in one system that is difficult, because to make the perfect function is not easy. So this thesis describes how make up for a few problems is come from integrating of components.