The traditional k-prototypes algorithm is well versed in clustering data with mixed numeric and categorical attributes, while it is limited to complete data. In order to handle incomplete data set with missing values, an improved k-prototypes algorithm is proposed in this paper, which employs a new dissimilarity measure for incomplete data set with mixed numeric and categorical attributes and a new approach to select k objects as the initial prototypes based on the nearest neighbors. The improved k-prototypes algorithm can not only cluster incomplete data with no need to impute the missing values, but also avoid randomness in choosing initial prototypes. To illustrate the accuracy of the established algorithm, traditional k-prototypes algorithm and k-prototypes employing the new dissimilarity measure are compared to the improved k-prototypes algorithm by using data from UCI machine learning repository. The experimental results show that the improved k-prototypes algorithm is superior to the other two algorithms with higher clustering accuracy.
목차
Abstract 1. Introduction 2. Materials and Methods 2.1. Data Sets 2.2. Problem Description 2.3. Incomplete Set Mixed Dissimilarity (ISMD) 2.4. Improved Selection of Initial k Centers based on Nearest Neighbors 2.5. Improved k-prototypes Algorithm for Incomplete Data with Mixed Attributes 3. Numerical Results 3.1. Evaluation Indexes 3.2. Experimental Results 4. Conclusions and Discussion Acknowledgements References
키워드
Mixed numeric and categorical attributesk-prototypes algorithmInitial k prototypesMissing value imputation
저자
Wu Sen [ Dongling School of Economics and Management University of Science and Technology Beijing Beijing, 100083, P.R.China ]
Chen Hong [ Dongling School of Economics and Management University of Science and Technology Beijing Beijing, 100083, P.R.China ]
Feng Xiaodong [ Dongling School of Economics and Management University of Science and Technology Beijing Beijing, 100083, P.R.China ]
보안공학연구지원센터(IJDTA) [Science & Engineering Research Support Center, Republic of Korea(IJDTA)]
설립연도
2006
분야
공학>컴퓨터학
소개
1. 보안공학에 대한 각종 조사 및 연구
2. 보안공학에 대한 응용기술 연구 및 발표
3. 보안공학에 관한 각종 학술 발표회 및 전시회 개최
4. 보안공학 기술의 상호 협조 및 정보교환
5. 보안공학에 관한 표준화 사업 및 규격의 제정
6. 보안공학에 관한 산학연 협동의 증진
7. 국제적 학술 교류 및 기술 협력
8. 보안공학에 관한 논문지 발간
9. 기타 본 회 목적 달성에 필요한 사업
간행물
간행물명
International Journal of Database Theory and Application
간기
격월간
pISSN
2005-4270
수록기간
2008~2016
십진분류
KDC 505DDC 605
이 권호 내 다른 논문 / International Journal of Database Theory and Application Vol.6 No.5