where i and j are the image coordinates, and I(·,·,t is the binary silhouette image obtained from the t th frame.
GEI is defined as the average of silhouettes in a gait cycle (composed of T frames): F ( i, j ) = 1 T ∑ t = 1 T I ( i, j, t ), (1) where i and j are the image coordinates, and I(·,·,t is the binary silhouette image obtained from the t th frame.
A negative Silhouette is obtained when the cluster assignment has been arbitrary, and the data point is actually closer to the neighbouring cluster than to the other data points within its own cluster [ 1].
The silhouettes were obtained from the study of Warschburger and Kröller [ 24], where sets of figures were developed to represent different age and gender groups of preschool children.
In the comparison between the enzymes, KlenThermase displayed the highest average Silhouette score, ThermoSequenase had the highest median Silhouette score and also obtained the highest Silhouette score most frequently (Table 1).
First, the top, bottom, and horizontal center of the silhouette regions are obtained for each frame.
Low-WHR silhouettes were usually obtained by narrowing the waist (rather than widening the hips) so the high ratings of silhouettes with marked waist incision obtained could reflect a preference for low BMI rather than low WHR (Rilling et al., 2009 ; Tovée et al., 1999 ).
As soon as all the obtained silhouettes fall inside the pre-defined ROI, reconstruction takes place.
We calculated the average silhouette values for clusterings obtained in successive steps of the hierarchical clustering and selected the clustering exhibiting a maximal silhouette value, among those clusterings that cluster more than 50% of the sequences in a dataset and contain more than one cluster.
Therefore, a higher or lower linear correlation between F1 and silhouette coefficient may be obtained for different templates of the same collection.
