Title: A new criterion for forming compact groups in hierarchical clustering
Authors: Dimitrios Karapistolis - Retired (Greece)
Theodoros Chatzipantelis - Research Committee, Aristotle University Thessaloniki (Greece) [presenting]
Abstract: Analysing the political culture, our model is based on the axiomatic assumption that individual worldviews of the good and the evil, and of the sacred and the profane in political matters derives, but is not determined, from hegemonic cosmological and ontological principles which constitute the public sphere of meaning. These principles define a given political culture, though they do not need to be internally cohesive or comprehensive. Data analysis for a sample of 900 students was based on Hierarchical Cluster Analysis (HCA) and Multiple Correspondence Analysis (MCA). In the first step, HCA was used to assign subjects into distinct groups according to their response patterns. Furthermore, for each group, the contribution of each question (variable) to the group formation was investigated, in order to reveal a typology of behavioural patterns. To determine the number of clusters, two methods were used: FACOR and KARAP. The main differences between the two methods are the algorithm for the internal constellations and juxtapositions defined by subjects and variables. By method KARAP we argue that we succeed to form compact groups connecting each subject in each group to the level of the variable that contributes to groups formation.