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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2010.8
- 수록면
- 803 - 811 (9page)
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초록· 키워드
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This study analyzes the characteristics of preference ratings by dividing estimated values into four groups according to rank correlation coeffocient after obtaining pref-erence estimated value to user`s ratings by using collaborative filtering algorithm. It is known that the value of standard error of skewness and standard error of kurtosis lower in the group of higher rank correlation coefficient. This explains that the prefer-ence of higher rank correlation coefficient has lower extreme values and the differences of preference rating values. In addition, top n recommendation lists are made after obtaining rank fitting by using the result ranks of prediction value and the ranks of real rated values, and this top n is applied to the four groups. The value of top n recommendation is calculated higher in the group of higher rank correlation coefficient, and the recommendation accuracy in the group of higher rank correlation coefficient is higher than that in the group of lower rank correlation coefficient. Thus, when using standard error of skewness and standard error of kurtosis in recommender system, rank correlation coefficient can be higher, and so the accuracy of recommendation prediction can be increased.
목차
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참고문헌 (17)
참고문헌 신청
1. [학술지(정기간행물)] - Herlocker, J. / 2004 / Evaluating collaborative filtering recom-mender systems / ACM Transactions on Information Systems 22 : 5 ~ 53
2. [학술지(정기간행물)] - 김선옥 / 2008 / Improving the MAE by Removing Lower Rated Items in Recommender System / 한국데이터정보과학회지 19 (3) : 819 ~ 830
3. [학술지(정기간행물)] - 김선옥 / 2008 / 임계값에 따른 예측정확도 개선에 관한 연구 / Journal of The Korean Data Analysis Society 10 (1) : 591 ~ 601
4. [학술지(정기간행물)] - Konstan, B. / 1997 / GroupLens: Applying collaborative filtering to usenet news / Communications of the ACM 40 : 77 ~ 87
5. [학술지(정기간행물)] - 이희춘 / 2006 / 추천시스템에서 Top-N 추천을 위한 순위적합에 관한 연구 / Journal of The Korean Data Analysis Society 8 (6) : 2597 ~ 2607
2. [학술지(정기간행물)] - 김선옥 / 2008 / Improving the MAE by Removing Lower Rated Items in Recommender System / 한국데이터정보과학회지 19 (3) : 819 ~ 830
3. [학술지(정기간행물)] - 김선옥 / 2008 / 임계값에 따른 예측정확도 개선에 관한 연구 / Journal of The Korean Data Analysis Society 10 (1) : 591 ~ 601
4. [학술지(정기간행물)] - Konstan, B. / 1997 / GroupLens: Applying collaborative filtering to usenet news / Communications of the ACM 40 : 77 ~ 87
5. [학술지(정기간행물)] - 이희춘 / 2006 / 추천시스템에서 Top-N 추천을 위한 순위적합에 관한 연구 / Journal of The Korean Data Analysis Society 8 (6) : 2597 ~ 2607
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UCI(KEPA) : I410-ECN-0101-2018-041-001379831