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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 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 *Zachary Blount (born 1977), American biologis ... [...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 chara ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michelle Girvan
Michelle Girvan (born 1977) is an American physicist and network science, 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, she joined the University of Maryland faculty in 2007. Recognition In 2017 Girvan was named a Fellow o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mark Newman
Mark Newman is a British 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 systems and complex networks, for which he was awarded the Lagrange Prize in 2014 and the APS Kadanoff Prize in 2024. Career Mark Newman grew up in Bristol, England, where he attended Bristol Cathedral School, and earned both an undergraduate degree and 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.Curriculum vitae retrieved 2022-12-26. In 2002 Newman moved to the |
Ford–Fulkerson Algorithm
The Ford–Fulkerson method or Ford–Fulkerson algorithm (FFA) is a greedy algorithm that computes the maximum flow in a flow network. It is sometimes called a "method" instead of an "algorithm" as the approach to finding augmenting paths in a residual graph is not fully specified or it is specified in several implementations with different running times. It was published in 1956 by L. R. Ford Jr. and D. R. Fulkerson. The name "Ford–Fulkerson" is often also used for the Edmonds–Karp algorithm, which is a fully defined implementation of the Ford–Fulkerson method. The idea behind the algorithm is as follows: as long as there is a path from the source (start node) to the sink (end node), with available capacity on all edges in the path, we send flow along one of the paths. Then we find another path, and so on. A path with available capacity is called an augmenting path. Algorithm Let G(V,E) be a graph, and for each edge from to , let c(u,v) be the capacity and f(u ... [...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 table (database), database tables, where every column (database), column of a table represents a particular Variable (computer science), variable, and each row (database), row corresponds to a given Record (computer science), 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, a dataset is a unit used to measure the amount of information released in a public open data repository. The European data.europa.eu portal aggregates more than a million data sets. 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 applicable to the ... [...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 2023-05-31. is an American computer scientist, mathematician, and physicist. He is resident faculty at the , and was formerly a full professor at the . He is an elected Fellow of the , the |
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 ... [...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 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 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 {{DEFAULTSORT:Hagberg, Aric Living people University of Arizona alumni Los Alamos National Laboratory personnel Year of birth missing (living people) ... [...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 the Fondazione Bruno Kessler in 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, for which he served as first President. 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tiago P
Tiago may refer to: Places * São Tiago, Minas, Brazil * Santiago, Isabela, Philippines * Santiago, Chile * Santiago de Compostela, Galicia, Spain * Santiago de Cuba, Cuba * Santiago de los Caballeros, Dominican Republic * , many applications People Given name * Tiago Banega (born 1999), Argentine footballer * Tiago Cardoso (other), many applications of Tiago Cardoso / Thiago Cardoso *Bebé (Tiago Manuel Dias Correia, born 1990), Portuguese football player * Tiago (footballer, born March 1983), full name Tiago de Oliveira Souza, Brazilian football right back * Tiago (footballer, born 1984), full name Tiago dos Santos Roberto, Brazilian football forward * Tiago Campagnaro (born 1983), Brazilian football goalkeeper * Tiago Casasola (born 1995), Argentine footballer *Tiago Ferreira (footballer, born 1975) (born 1975), Portuguese footballer * Tiago Ferreyra (born 2002), Argentine footballer * Tiago Geralnik (born 2003), Argentine footballer * Tiago Godinho (born 1984), Portu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mason Porter
Mason A. Porter is an American mathematician, physicist, and social scientist 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 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 Mathematical Sciences Research Institute ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
