Journal ArticleDOI
On the Application of Cluster Analysis to Growing Season Precipitation Data in North America East of the Rockies
Xiaofeng Gong,Michael B. Richman +1 more
TLDR
In this paper, an intercomparison of various cluster techniques was carried out on a well-studied dataset (7-day precipitation data from 1949 to 1987 in central and eastern North America).Abstract:
Cluster analysis (CA) has been applied to geophysical research for over two decades although its popularity has increased dramatically over the past few years. To date, systematic methodological reviews have not appeared in geophysical literature. In this paper, after a review of a large number of applications on cluster analysis, an intercomparison of various cluster techniques was carried out on a well-studied dataset (7-day precipitation data from 1949 to 1987 in central and eastern North America). The cluster methods tested were single linkage, complete linkage, average linkage between groups, average linkage within a new group, Ward's method, k means, the nucleated agglomerative method, and the rotated principal component analysis. Three different dissimilarity measures (Euclidean distance, inverse correlation, and theta angle) and three initial partition methods were also tested on the hierarchical and nonhierarchical methods, respectively. Twenty-two of the 23 cluster algorithms yielded na...read more
Citations
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Journal ArticleDOI
Absorptive capacity configurations in supply chains: gearing for partner-enabled market knowledge creation
TL;DR: This study uncovers and examines the variety of supply chain partnership configurations that exist based on differences in capability platforms, reflecting varying processes and information systems, and uses the absorptive capacity lens to build a conceptual framework that links these configurations with partner-enabled market knowledge creation.
Dissertação de mestrado
TL;DR: The presente estudo 3 as mentioned in this paper analyzes the condições de vida, trabalho, moradia, and escolarização of trabalhadores temporários nordestinos diante do crescimento das migraçóes na atualidade.
Journal ArticleDOI
Classifications of Atmospheric Circulation Patterns
Radan Huth,Christoph Beck,Andreas Philipp,Matthias Demuzere,Zbigniew Ustrnul,Monika Cahynová,Jan Kyselý,Ole Einar Tveito +7 more
TL;DR: It is mentioned a more extensive use in climate studies, both of past, present, and future climates, innovative applications in the ensemble forecasting, increasing variety of synoptic–climatological investigations, and steps above from the troposphere.
Journal ArticleDOI
Cost733cat - A database of weather and circulation type classifications
Andreas Philipp,Judit Bartholy,Christoph Beck,Michel Erpicum,Pere Esteban,Xavier Fettweis,Radan Huth,Paul James,Sylvie Jourdain,Frank Kreienkamp,Thomas Krennert,S. Lykoudis,Silas C. Michalides,Krystyna Pianko-Kluczyńska,Piia Post,Domingo Fernando Rasilla Álvarez,Reinhard Schiemann,Arne Spekat,Filippos Tymvios +18 more
TL;DR: It is shown that the types of subjective classifications compared to automated methods show higher persistence, inter-annual variation and long-term trends, while among the automated classifications optimization methods show a tendency for longer persistence and higher seasonal variation.
Journal ArticleDOI
Redefining the climate zones of turkey using cluster analysis
TL;DR: In this paper, the mathematical methodology of cluster analysis was used to define seven different climate zones of Turkey, as in conventional climate zones, but with considerable differences at the boundaries, and the stability of the clusters was also tested.
References
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Journal ArticleDOI
Confidence limits on phylogenies: an approach using the bootstrap.
TL;DR: The recently‐developed statistical method known as the “bootstrap” can be used to place confidence intervals on phylogenies and shows significant evidence for a group if it is defined by three or more characters.
Journal ArticleDOI
Hierarchical Grouping to Optimize an Objective Function
TL;DR: In this paper, a procedure for forming hierarchical groups of mutually exclusive subsets, each of which has members that are maximally similar with respect to specified characteristics, is suggested for use in large-scale (n > 100) studies when a precise optimal solution for a specified number of groups is not practical.
Book
Applied Multivariate Statistical Analysis
R. A. Johnson,Dean W. Wichern +1 more
TL;DR: In this article, the authors present an overview of the basic concepts of multivariate analysis, including matrix algebra and random vectors, as well as a strategy for analyzing multivariate models.
Book
Cluster Analysis
TL;DR: This fourth edition of the highly successful Cluster Analysis represents a thorough revision of the third edition and covers new and developing areas such as classification likelihood and neural networks for clustering.
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