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Development of Personalized Recommendation System using RFM method and k-means Clustering

RFM기법과 k-means 기법을 이용한 개인화 추천시스템의 개발

  • Cho, Young-Sung (School of Computer Science & Information, DongYang Mirae University) ;
  • Gu, Mi-Sug (School of Electrical & Computer Enginnering, Chungbuk National University) ;
  • Ryu, Keun-Ho (School of Electrical & Computer Enginnering, Chungbuk National University)
  • 조영성 (동양미래대학 전산정보학부) ;
  • 구미숙 (충북대학교 전기전자컴퓨터공학부) ;
  • 류근호 (충북대학교 전기전자컴퓨터공학부)
  • Received : 2012.03.01
  • Accepted : 2012.04.10
  • Published : 2012.06.30

Abstract

Collaborative filtering which is used explicit method in a existing recommedation system, can not only reflect exact attributes of item but also still has the problem of sparsity and scalability, though it has been practically used to improve these defects. This paper proposes the personalized recommendation system using RFM method and k-means clustering in u-commerce which is required by real time accessablity and agility. In this paper, using a implicit method which is is not used complicated query processing of the request and the response for rating, it is necessary for us to keep the analysis of RFM method and k-means clustering to be able to reflect attributes of the item in order to find the items with high purchasablity. The proposed makes the task of clustering to apply the variable of featured vector for the customer's information and calculating of the preference by each item category based on purchase history data, is able to recommend the items with efficiency. To estimate the performance, the proposed system is compared with existing system. As a result, it can be improved and evaluated according to the criteria of logicality through the experiment with dataset, collected in a cosmetic internet shopping mall.

기존 추천시스템의 명시적((Explicit) 협력 필터링 방법은 실용화 되었으나 정확한 아이템의 속성이 반영되지 않는 문제와 희박성과 확장성 문제가 여전히 남아 있다. 본 논문에서는 실시간성과 민첩성이 요구되는 유비쿼터스 상거래에서 고객에게 번거로운 질의 응답 과정이 없이 묵시적인(Implicit) 방법을 이용하여 RFM(Recency, Frequency, Monetary)기법과 k-means 기법을 이용한 개인화 추천시스템을 제안한다. 구매 가능성이 높은 아이템을 추출하기 위해서 고객데이터와 구매이력 데이터를 기반으로 아이템의 속성 반영이 가능한 RFM기법과 k-means 클러스터링을 이용한다. 제안 방법으로 추천의 효율성이 높은 아이템 추천이 가능하도록 고객정보의 속성 변수의 특징 벡터가 적용된 클러스터링 작업과 군집내의 아이템 카테고리 선호도 계산 작업의 전처리를 수행한다. 성능평가를 위해 현업에서 사용하는 인터넷 화장품 아이템 쇼핑몰의 데이터를 기반으로 데이터 셋을 구성하여 기존 시스템과 비교 실험을 통해 성능을 평가하여 효용성과 타당성을 입증하였다.

Keywords

References

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  1. 연관규칙과 가중 선호도를 이용한 추천시스템 연구 vol.13, pp.3, 2012, https://doi.org/10.9716/kits.2014.13.3.309