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To explore the genus Bougainvilleaclassification criteria, comparative analysis of 15 morphological traits collected 18 varieties of Bougainvillea, in order to provide a reference for the promotion of Bougainvillea cultivation, breeding and classification, identification and other research. Q-type clustering results showed that 18Bougainvillea varieties can be divided into 3 categories, including...
Aim: provide referential comprehensive model for evaluation of beauty of the body type of female students in college. Methods: basing on the test data of series of body shape indicators of female students in college aged 18 to 23 and the subjective ratings of their beauty of body type by teachers, use statistics analysis to select typical indicators and build the mathematical model of evaluation of...
Define faces temporal width, bizygomatic breadth, mandibular breadth, maxilla-chin breadth, physiognomic facial length as the key characteristic parameters of face classification, which based on anthropometry, image feature and mathematical statistics theory. Characteristic data of face shapes for 201 cases of shanghai female college students are extracted through 3D non-contact image measurement...
Many cluster validity indices faced two problems. First, most of them neglect the variance of intra-cluster compactness between clusters. Second, some indices can not deal well with the clusters of arbitrary shapes. In this paper, we propose a new approach to solving these two problems: we define the validity indices for the whole clustering results upon the validity indices of single clusters. This...
Estimating the true number of clusters in a data set is one of the major challenges in cluster analysis. Yet in certain domains,knowing the true number of clusters is of high importance. For example, in medical research, detecting the true number of groups and sub-groups of cancer would be of utmost importance for their effective treatment. In this paper we propose a novel method to estimate the number...
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