Browsing by Author "De Soete, Geert"
Now showing 1 - 2 of 2
Results Per Page
Sort Options
Item On the perceptual salience of features of Chernoff faces for representing multivariate data(1985) De Soete, Geert; De Corte, WilfriedIn order to assess the perceptual salience of features of Chernoff faces, a study was conducted in which subjects had to rate the similarity of pairs of Chernoff faces. It was found that the facial features differ considerably in perceptual salience. Highly salient features are the curvature of the mouth, the half-face height, the half-length of the eyes, and the length of the eyebrows, whereas the eccentricity of the lower ellipse of the face, the position of the center of the mouth, the separation and the slant of the eyes, and the height of the brows have little influence on the perception of Chemoff faces.Item A probabilistic multidimensional scaling vector model(1986) DeSarbo, Wayne S.; Oliver, Richard L.; De Soete, GeertThis article presents the development of a new stochastic multidimensional scaling (MDS) method, which operates on paired comparisons data and renders a spatial representation of subjects and stimuli. Subjects are represented as vectors and stimuli as points in a T-dimensional space, where the scalar products, or projections of the stimulus points onto the subject vectors, provide respective information as to the utility (or whatever latent construct is under investigation) of the stimuli to the subjects. The psychometric literature concerning related MDS methods that also operate on paired comparisons data is reviewed, and a technical description of the new method is provided. A small monte carlo analysis performed on synthetic data with the new method is also presented. To illustrate the versatility of the model, an application measuring consumer satisfaction and investigating the impact of hypothesized determinants, using one of the optional reparameterized models, is described. Future areas of further research are identified.