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LOD-기반 추천 시스템에서 LOD 그래프에 가중치를 사용한 의미 거리 측정 모델

A Semantic Distance Measurement Model using Weights on the LOD Graph in an LOD-based Recommender System

  • 허원회 (성결대학교 미디어소프트웨어학부)
  • Huh, Wonwhoi (Division of Media Software, Sungkyul University)
  • 투고 : 2021.04.06
  • 심사 : 2021.07.20
  • 발행 : 2021.07.28

초록

LOD-기반 추천 시스템은 보통 DBpedia와 같은 LOD 데이터세트 내에서 사용가능한 데이터를 활용하여 최종 사용자에게 영화, 책, 음악과 같은 아이템을 추천한다. 이러한 시스템은 링크드 데이터 리소스 쌍 간의 일치 정도를 측정하는 의미 유사도 알고리즘을 사용한다. 이 논문에서는 LOD 그래프의 링크에 사용자 평가 등급을 변환한 가중치를 할당하여 LOD-기반 추천 시스템에서 의미 거리를 측정하는 새로운 접근방식을 제안했다. 이 논문에서 제안된 의미 거리 측정 모델은 가중치 계산을 통해 그래프가 사용자에게 개인화되는 처리 단계와 이러한 가중치를 LDSD에 적용하는 방법을 기반으로 한다. 실험 결과는 다른 유사한 방법들과 비교하여 제안된 방법이 더 높은 정확도를 보였으며, 추천 시스템의 의미 거리 측정의 범위를 넓혀서 유사도 향상에 기여하였다. 향후 연구로는 다른 방법의 LOD-기반 유사도 측정을 사용하여 모델에 미치는 영향을 분석하는 것을 목표로 한다.

LOD-based recommender systems usually leverage the data available within LOD datasets, such as DBpedia, in order to recommend items(movies, books, music) to the end users. These systems use a semantic similarity algorithm that calculates the degree of matching between pairs of Linked Data resources. In this paper, we proposed a new approach to measuring semantic distance in an LOD-based recommender system by assigning weights converted from user ratings to links in the LOD graph. The semantic distance measurement model proposed in this paper is based on a processing step in which a graph is personalized to a user through weight calculation and a method of applying these weights to LDSD. The Experimental results showed that the proposed method showed higher accuracy compared to other similar methods, and it contributed to the improvement of similarity by expanding the range of semantic distance measurement of the recommender system. As future work, we aim to analyze the impact on the model using different methods of LOD-based similarity measurement.

키워드

참고문헌

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