Correlations In Clusters And Related Systems, New Perspectives On The Many-body Problem

Correlations In Clusters And Related Systems, New Perspectives On The Many-body Problem

Author: Jean-patrick Connerade

Publisher: World Scientific

Published: 1996-05-25

Total Pages: 274

ISBN-13: 9814547581

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This proceedings volume describes many-body effects in highly correlated systems with special emphasis on metal clusters and transition from the free atom to the solid state limit and on strong laser field effects. The interdisciplinary nature of the subject should be stressed: clusters are a novel area of research, involving atomic, molecular, solid state and nuclear physics.


Data Streams

Data Streams

Author: S. Muthukrishnan

Publisher: Now Publishers Inc

Published: 2005

Total Pages: 136

ISBN-13: 193301914X

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In the data stream scenario, input arrives very rapidly and there is limited memory to store the input. Algorithms have to work with one or few passes over the data, space less than linear in the input size or time significantly less than the input size. In the past few years, a new theory has emerged for reasoning about algorithms that work within these constraints on space, time, and number of passes. Some of the methods rely on metric embeddings, pseudo-random computations, sparse approximation theory and communication complexity. The applications for this scenario include IP network traffic analysis, mining text message streams and processing massive data sets in general. Researchers in Theoretical Computer Science, Databases, IP Networking and Computer Systems are working on the data stream challenges.


Correlation Clustering

Correlation Clustering

Author: Bonchi Francesco

Publisher: Springer Nature

Published: 2022-05-31

Total Pages: 133

ISBN-13: 3031792106

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Given a set of objects and a pairwise similarity measure between them, the goal of correlation clustering is to partition the objects in a set of clusters to maximize the similarity of the objects within the same cluster and minimize the similarity of the objects in different clusters. In most of the variants of correlation clustering, the number of clusters is not a given parameter; instead, the optimal number of clusters is automatically determined. Correlation clustering is perhaps the most natural formulation of clustering: as it just needs a definition of similarity, its broad generality makes it applicable to a wide range of problems in different contexts, and, particularly, makes it naturally suitable to clustering structured objects for which feature vectors can be difficult to obtain. Despite its simplicity, generality, and wide applicability, correlation clustering has so far received much more attention from an algorithmic-theory perspective than from the data-mining community. The goal of this lecture is to show how correlation clustering can be a powerful addition to the toolkit of a data-mining researcher and practitioner, and to encourage further research in the area.


Cluster Analysis for Applications

Cluster Analysis for Applications

Author: Michael R. Anderberg

Publisher: Academic Press

Published: 2014-05-10

Total Pages: 376

ISBN-13: 1483191397

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Cluster Analysis for Applications deals with methods and various applications of cluster analysis. Topics covered range from variables and scales to measures of association among variables and among data units. Conceptual problems in cluster analysis are discussed, along with hierarchical and non-hierarchical clustering methods. The necessary elements of data analysis, statistics, cluster analysis, and computer implementation are integrated vertically to cover the complete path from raw data to a finished analysis. Comprised of 10 chapters, this book begins with an introduction to the subject of cluster analysis and its uses as well as category sorting problems and the need for cluster analysis algorithms. The next three chapters give a detailed account of variables and association measures, with emphasis on strategies for dealing with problems containing variables of mixed types. Subsequent chapters focus on the central techniques of cluster analysis with particular reference to computational considerations; interpretation of clustering results; and techniques and strategies for making the most effective use of cluster analysis. The final chapter suggests an approach for the evaluation of alternative clustering methods. The presentation is capped with a complete set of implementing computer programs listed in the Appendices to make the use of cluster analysis as painless and free of mechanical error as is possible. This monograph is intended for students and workers who have encountered the notion of cluster analysis.


Nuclear Particle Correlations And Cluster Physics

Nuclear Particle Correlations And Cluster Physics

Author: Wolf-udo Schroeder

Publisher: World Scientific

Published: 2017-05-19

Total Pages: 572

ISBN-13: 9813209364

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A timely presentation of new results, challenges, and opportunities in the quickly developing field of nuclear cluster physics, presented by an international group of eminent theoretical and experimental scientists active in the field. Their work reveals how correlations of nucleons can appear spontaneously, propagate, and survive in nuclear matter at both low and high densities. Characteristic nuclear substructures, beyond those predicted by mean-field or collective scenarios, appear on microscopic and cosmic length scales. They can influence the dynamics of fusion of light nuclei and the decay of heavy, fissioning nuclei or of systems produced transiently in heavy-ion reactions. A must-read for young scientists entering the field and a valuable resource for more seasoned nuclear researchers!


Topology of Strongly Correlated Systems

Topology of Strongly Correlated Systems

Author: Pedro Bicudo

Publisher: World Scientific

Published: 2001

Total Pages: 270

ISBN-13: 9789810245726

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The XVIII Lisbon Autumn School brought together physicists from different areas, ranging from QCD to condensed matter. This subject will be of ever-growing importance in the coming years. The topics covered are: Anomalies, Physical Charges, Chiral Symmetry, Vortices (Superconductivity, Solitons, Kosterlitz-Thouless Transitions), Non-trivial Topology on the Lattice, Confinement (Wilson Loops and Strings, Instantons, Abelian Higgs Model, Dual QCD).


Structure and Dynamics of Strongly Interacting Colloids and Supramolecular Aggregates in Solution

Structure and Dynamics of Strongly Interacting Colloids and Supramolecular Aggregates in Solution

Author: Sow-Hsin Chen

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 848

ISBN-13: 9401125406

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During the last decade, various powerful experimental tools have been developed, such as small angle X-ray and neutron scattering, X-ray and neutron reflection from interfaces, neutron spin-echo spectroscopy and quasi-elastic multiple light scattering and large scale computer simulations. Due to the rapid progress brought about by these techniques, one witnesses a resurgence of interest in the physicochemical properties of colloids, surfactants and macromolecules in solution. Although these disciplines have a long history, they are at present rapidly transforming into a new, interdisciplinary research area generally known as complex liquids or soft condensed matter physics: names that reflect the considerable involvement of the chemical and condensed matter physicists. This book is based on lectures given at a NATO ASI held in the summer of 1991 and discusses these new developments, both in theory and experiment. It constitutes the most up-to-date and comprehensive summary of the entire field.


Correlations And Fluctuations In Qcd, Proceedings Of The 10th International Workshop On Multiparticle Production

Correlations And Fluctuations In Qcd, Proceedings Of The 10th International Workshop On Multiparticle Production

Author: Christos N Ktorides

Publisher: World Scientific

Published: 2003-09-05

Total Pages: 423

ISBN-13: 981448542X

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This book contains a wide spectrum of articles which report the current research progress in topics concerning the dynamics of multiparticle production in high energy collision processes, with emphasis on nonperturbative aspects of QCD. The topics covered are: the phase diagram of QCD and related transitions; correlations and fluctuations in a variety of experiments involving multiparticle production (e+e- annihilation, pp collisions and heavy ion collisions); recent theoretical and experimental developments in interferometry and particle correlations; event-by-event fluctuations in high energy experiments; concepts of chaos and complexity in multiparticle dynamics and related phenomenology; relevant theoretical ideas based on QCD as a field theory.


Agent and Multi-Agent Systems: Technologies and Applications

Agent and Multi-Agent Systems: Technologies and Applications

Author: Adam Grzech

Publisher: Springer

Published: 2007-07-07

Total Pages: 1066

ISBN-13: 3540728309

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This book constitutes the refereed proceedings of the First International Symposium on Agent and Multi-Agent Systems: Technologies and Applications, KES-AMSTA 2007, held in Wroclaw, Poland in May/June 2007. Coverage includes agent-oriented Web applications, mobility aspects of agent systems, agents for network management, agent approaches to robotic systems, as well as intelligent and secure agents for digital content management.