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Zachary's Karate Club
Zachary's karate club is a social network of a university karate club, described in the paper "An Information Flow Model for Conflict and Fission in Small Groups" by Wayne W. Zachary. The network became a popular example of community structure in networks after its use by Michelle Girvan and Mark Newman in 2002. Network description A social network of a karate club was studied by Wayne W. Zachary for a period of three years from 1970 to 1972. The network captures 34 members of a karate club, documenting links between pairs of members who interacted outside the club. During the study a conflict arose between the administrator "John A" and instructor "Mr. Hi" (pseudonyms), which led to the split of the club into two. Half of the members formed a new club around Mr. Hi; members from the other part found a new instructor or gave up karate. Based on collected data Zachary correctly assigned all but one member of the club to the groups they actually joined after the split. Zachary' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zachary Karate Club Social Network
Zachary is a male given name, a variant of Zechariah – the name of several Biblical characters. People * Pope Zachary (679–752), Pope of the Catholic Church from 741 to 752 * Zachary of Vienne (died 106), bishop of Vienne (France), martyr and Roman Catholic saint *Zachary Abel (born 1980), American actor *Zachary Armstrong (born 1984), American artist *Zachary Aston-Reese (born 1994), American ice hockey player *Zachary Babington (1690–1745), High Sheriff of Staffordshire and barrister *Zak Bagans (born 1977), American television host, author, documentary filmmaker and paranormal investigator * Zachary James Baker, stage name Zacky Vengeance, rhythm guitarist for American rock band Avenged Sevenfold *Zachary Bayly (military officer) (1841–1916), South African colonial military commander *Zachary Bayly (planter) (1721–1769), planter and politician in Jamaica *Zachary Bell (born 1982), Canadian racing cyclist *Zachary Bennett (born 1980), Canadian actor and musician *Zac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Community Structure
In the study of complex networks, a network is said to have community structure if the nodes of the network can be easily grouped into (potentially overlapping) sets of nodes such that each set of nodes is densely connected internally. In the particular case of ''non-overlapping'' community finding, this implies that the network divides naturally into groups of nodes with dense connections internally and sparser connections between groups. But ''overlapping'' communities are also allowed. The more general definition is based on the principle that pairs of nodes are more likely to be connected if they are both members of the same community(ies), and less likely to be connected if they do not share communities. A related but different problem is community search, where the goal is to find a community that a certain vertex belongs to. Properties In the study of networks, such as computer and information networks, social networks and biological networks, a number of different charac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michelle Girvan
Michelle Girvan (born 1977) is an American physicist and network scientist whose research combines methods from dynamical systems, graph theory, and statistical mechanics and applies them to problems including epidemiology, gene regulation, and the study of Information cascades. She is one of the namesakes of the Girvan–Newman algorithm, used to detect community structure in complex systems. Girvan is a professor of physics at the University of Maryland, College Park. Education and career Girvan graduated from the Massachusetts Institute of Technology in 1999, with a double major in mathematics and physics and a minor in political science. She completed a Ph.D. in physics at Cornell University in 2004. Her dissertation, ''The Structure and Dynamics of Complex Networks'', was supervised by Steven Strogatz. After postdoctoral research at the Santa Fe Institute The Santa Fe Institute (SFI) is an independent, nonprofit theoretical research institute located in Santa Fe, New ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mark Newman
Mark Newman is an English-American physicist and Anatol Rapoport Distinguished University Professor of Physics at the University of Michigan, as well as an external faculty member of the Santa Fe Institute. He is known for his fundamental contributions to the fields of complex networks and complex systems, for which he was awarded the 2014 Lagrange Prize. Career Mark Newman grew up in Bristol, England, where he was a pupil at Bristol Cathedral School, and earned both an undergraduate degree and a PhD in physics from the University of Oxford, before moving to the United States to conduct research first at Cornell University and later at the Santa Fe Institute, a private research institute in northern New Mexico devoted to the study of complex systems. In 2002 Newman moved to the University of Michigan, where he is currently the Anatol Rapoport Distinguished University Professor of Physics and a professor in the university's Center for the Study of Complex Systems. Research ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Data Set
A data set (or dataset) is a collection of data. In the case of tabular data, a data set corresponds to one or more database tables, where every column of a table represents a particular variable, and each row corresponds to a given record of the data set in question. The data set lists values for each of the variables, such as for example height and weight of an object, for each member of the data set. Data sets can also consist of a collection of documents or files. In the open data discipline, data set is the unit to measure the information released in a public open data repository. The European data.europa.eu portal aggregates more than a million data sets. Some other issues ( real-time data sources, non-relational data sets, etc.) increases the difficulty to reach a consensus about it. Properties Several characteristics define a data set's structure and properties. These include the number and types of the attributes or variables, and various statistical measures applic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cristopher Moore
Cristopher David Moore, known as Cris Moore, (born March 12, 1968 in New Brunswick, New Jersey)Curriculum vitae retrieved 2012-03-10. is an American computer scientist, mathematician, and physicist. He is resident faculty at the , and was formerly a full professor at the . Biography Moore did his undergraduate studies at , graduating in 1986.[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Santa Fe Institute
The Santa Fe Institute (SFI) is an independent, nonprofit theoretical research institute located in Santa Fe, New Mexico, United States and dedicated to the multidisciplinary study of the fundamental principles of complex adaptive systems, including physical, computational, biological, and social systems. The institute is ranked 24th among the world's "Top Science and Technology Think Tanks" and 24th among the world's "Best Transdisciplinary Research Think Tanks" according to the 2020 edition of the ''Global Go To Think Tank Index Reports'', published annually by the University of Pennsylvania. The institute consists of a small number of resident faculty and postdoctoral researchers, a large group of external faculty whose primary appointments are at other institutions, and a number of visiting scholars. The institute is advised by a group of eminent scholars, including several Nobel Prize-winning scientists. Although theoretical scientific research is the institute's primary focu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aric Hagberg
Aric Hagberg is an American applied mathematician and academic, working in nonlinear dynamics, pattern formation and complex systems. He is the deputy division leader of the computer, computational, and statistical sciences division at Los Alamos National Laboratory. He was educated at the University of Arizona (PhD, 1994). Aric is also one of the authors of the NetworkX NetworkX is a Python library for studying graphs and networks. NetworkX is free software released under the BSD-new license. Features * Classes for graphs and digraphs. * Conversion of graphs to and from several formats. * Ability to con ... package.Aric A. Hagberg, Daniel A. Schult, Pieter J. SwartExploring Network Structure, Dynamics, and Function using NetworkX ''Proceedings of the 7th Python in Science conference (SciPy 2008)'', G. Varoquaux, T. Vaught, J. Millman (Eds.), pp. 11–15. References External links Hagberg's Google Scholar ProfileHagberg's Page at LANL's Center for Nonlinear Studies ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manlio De Domenico
Manlio De Domenico is an Italian physicist and complex systems scientist, currently Professor of Physics at the University of Padua and previously at thFondazione Bruno Kesslerin Trento (Italy). In 2014 he has co-founded the Mediterranean School of Complex Networks, and in 2019 he has contributed to found the Italian Chapter of the Complex Systems Society. The focus of his research is on complex adaptive systems and big data analysis, where he is best known for his theoretical and computational work in network science, statistical physics and nonlinear dynamics of multilayer systems. Early life and education He was born in Messina in 1984. He got his Ph.D in Nuclear and Astroparticle physics from the University of Catania and the Scuola Superiore di Catania in 2012, proposing a data-driven model for the propagation of Ultra-High Energy Cosmic Rays (UHECR) in a magnetized Universe and a multiscale approach to analyze their anisotropic distribution at Earth, with visiting scho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tiago P
Tiago is a given and a family name, being one of the Portuguese equivalents of the names Jacob and James. Its archaic spelling, used mostly in Brazil, is Thiago. Tiago may also refer to: *Tiago (horse) (foaled 2004), an American racehorse * "Tiago" (song), by French singer Kendji Girac from his 2018 album ''Amigo'' *Tata Tiago, an Indian hatchback automobile Places * São Tiago, Brazilian city in the state of Minas * Santiago, Isabela, Philippines * Santiago de Chile, capital and largest city of Chile * Santiago de Compostela, city in Galicia, Spain * Santiago de Cuba, second largest city of Cuba * Santiago de los Caballeros, second largest city of the Dominican Republic * , m any applications People with the given name * Tiago Cardoso (other), many applications of Tiago Cardoso / Thiago Cardoso *Bebé (born 1990), real name Tiago Manuel Dias Correia, Portuguese football player * Tiago (footballer, born 1984), full name Tiago dos Santos Roberto, Brazilian football forw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mason Porter
Mason A. Porter is an American mathematician and physicist currently at the University of California, Los Angeles. He is an Elected Fellow of the American Physical Society. He was elected to the 2018 class of fellows of the American Mathematical Society. Early life and education Mason Porter was born in 1976 in Los Angeles. He completed his studies at Beverly Hills High School in 1994 as the Salutatorian of his class. Afterward, he attended California Institute of Technology, where he was a member of House System at the California Institute of Technology, Lloyd House. In 1998, he graduated in with a Bachelor of Science (Honours degree) in Applied Mathematics. For his graduate studies, he went to the Center for Applied Mathematics at Cornell University, where he worked on quantum billiards. He was supervised by Richard Liboff and graduated in 2002 with a PhD. Career Subsequently, Mason Porter had postdoctoral scholar positions at the Georgia Institute of Technology, the Mathema ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
