Hierarchical Clustering Stephen P. Borgatti University of South Carolina Given a set of N items to be clustered, and an NxN distance (or similarity) matrix, the basic process of Johnson's (1967) hierarchical clustering is this: Start by assigning each item to its own cluster, so that if ...
Category clusteringThe measurement of individual differences in cognitive processes and the advancement of multinomial processing tree (MPT) models were two of William H. Batchelder's major research interests. Inspired by his work, we investigated developmental differences between 7-year-old children, 10...
We characterize the differential spread of SARS-CoV-2 along demographic lines by using US census data to annotate each CBG with its racial composition and median income, then tracking predicted infection rates in CBGs with different demographic compositions: for example, within each metro area, comp...
Over the last several years, the study of working memory (WM) for simple visual features (e.g., colors, orientations) has been dominated by perspectives that assume items in WM are stored independently of one another. Evidence has revealed, however, syst
theory, studies have also shown that its key variables operate similarly at the micro-scale (Dinesen and Sønderskov 2015; Weisburd et al. 2020), suggesting it can be applied to explain the association between demographic features and crime at smaller geographic scales in addition to tracts....
4C). Hierarchical clustering evaluation of differentially expressed miRNAs indicated that the control and PS NPs samples were clustered together (Fig. 4D). The relevant information is shown in Table S3. A total of 7 miRNAs were not homologous with humans, including miR-667–3p, miR-3084–3p, ...
Answer to: Explain the differences between public, private, and community clouds. What are some of the factors to consider when choosing which...
including those occurring in volcanic environments or associated with injection-induced seismicity, the stress transient is rather attributed to fluid migration processes. In these cases, the observation of anti-repeaters provides indirect evidence for the presence of fluid and its migration. This may al...
Its natural range is a 6000-km-wide belt through sub-Sahelian Africa covering a contrasted ecological environment. V. paradoxa is currently subdivided into two non-overlapping subspe- cies, paradoxa (from Senegal to Central African Republic) and nilotica (in Sudan and Uganda). A gap of 175 ...
The number of times a node touches \({O}_{1,i}\) increases with the degree of a node and its neighbors’ degree. However, the value of \({O}_{2,i}\) only depends on node degree; the higher the number of connections of a node, the higher the value of \({O}_{2,i}\). ...