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Signaling Games
In game theory, a signaling game is a type of a dynamic game, dynamic Bayesian game.Subsection 8.2.2 in Fudenberg Trole 1991, pp. 326–331 The essence of a signaling game is that one player takes action, the signal, to convey information to another player. Sending the signal is more costly if the information is false. A manufacturer, for example, might provide a warranty for its product to signal to consumers that it is unlikely to break down. A traditional example is a worker who acquires a college degree not because it increases their skill but because it conveys their ability to employers. A simple signaling game would have two players: the sender and the receiver. The sender has one of two types, which might be called "desirable" and "undesirable," with different payoff functions. The receiver knows the probability of each type but not which one this particular sender has. The receiver has just one possible type. The sender moves first, choosing an action called the "sign ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quiche
Quiche ( ) is a French tart consisting of a pastry crust filled with savoury custard and pieces of cheese, meat, seafood or vegetables. A well-known variant is quiche lorraine, which includes lardons or bacon. Quiche may be served hot, warm or cold. Overview Etymology The word is first attested in French in 1805, and in 1605 in Lorrain patois. The first English usage — "quiche lorraine" — was recorded in 1925. The further etymology is uncertain, but it may be related to the German ' meaning "cake" or "tart". History Recipes for eggs and cream baked in pastry containing meat, fish and fruit are referred to as ''Crustardes of flesh'' and ''Crustade'' in the 14th-century, English Cookbook, '' The Forme of Cury.'' As there have been other local medieval preparations in Central Europe, from the east of France to Austria, that resemble quiche. In 1586, a quiche like dish was served at a dinner for Charles III, Duke of Lorraine. The 19th century noun Quiche later being g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bird-of-paradise
The birds-of-paradise are members of the Family (biology), family Paradisaeidae of the order Passeriformes. The majority of species are found in eastern Indonesia, Papua New Guinea, and eastern Australia. The family has 45 species in 17 genera. The members of this family are perhaps best known for the plumage of the males of the species, the majority of which are sexually dimorphic. The males of these species tend to have very long, elaborate feathers extending from the beak, wings, tail, or head. For the most part, they are confined to dense rainforest habitats. The diet of all species is dominated by fruit and to a lesser extent arthropods. The birds-of-paradise have a variety of breeding systems, ranging from Monogamy in animals, monogamy to Lek (mating arena), lek-type Animal sexual behaviour#Polygamy, polygamy. A number of species are threatened by hunting and habitat loss. Taxonomy The family Paradisaeidae is introduced (as Paradiseidae) in 1825 with ''Paradisaea'' as the t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peacock
Peafowl is a common name for two bird species of the genus '' Pavo'' and one species of the closely related genus '' Afropavo'' within the tribe Pavonini of the family Phasianidae (the pheasants and their allies). Male peafowl are referred to as peacocks, and female peafowl are referred to as peahens. The two Asiatic species are the blue or Indian peafowl originally from the Indian subcontinent, and the green peafowl from Southeast Asia. The third peafowl species, the Congo peafowl, is native only to the Congo Basin. Male peafowl are known for their piercing calls and their extravagant plumage. The latter is especially prominent in the Asiatic species, which have an eye-spotted "tail" or "train" of covert feathers, which they display as part of a courtship ritual. The functions of the elaborate iridescent coloration and large "train" of peacocks have been the subject of extensive scientific debate. Charles Darwin suggested that they served to attract females, and the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Handicap Principle
The handicap principle is a hypothesis proposed by the Israeli biologist Amotz Zahavi in 1975. It is meant to explain how "signal selection" during mate choice may lead to Signalling theory, "honest" or reliable signalling between male and female animals which have an obvious motivation to bluff or deceive each other. The handicap principle suggests that secondary sexual characteristics are costly signals which must be reliable, as they cost the signaller resources that individuals with less of a particular trait could not afford. The handicap principle further proposes that animals of greater fitness (biology), biological fitness signal this through handicapping ethology, behaviour, or Morphology (biology), morphology that effectively lowers overall fitness. The central idea is that sexually selected traits function like conspicuous consumption, signalling the ability to afford to squander a resource. Receivers then know that the signal indicates quality, because inferior-quality ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alan Grafen
Alan Grafen is a Scottish ethologist and evolutionary biologist. He currently teaches and undertakes research at St John's College, Oxford. Along with regular contributions to scientific journals, Grafen is known publicly for his work as co-editor (with Mark Ridley) of the 2006 festschrift '' Richard Dawkins: How a Scientist Changed the Way We Think'', honouring the achievements of his colleague and former academic advisor. He has worked extensively in the field of biological game theory, and, in 1990, devised a model showing that Zahavi's well-known handicap principle could theoretically exist in natural populations. He also published a seminal paper in the field of phylogenetic comparative methods, in which he demonstrated how the tools of generalized least squares could be applied to perform phylogenetically informed statistical analyses. Grafen was elected a Fellow of the Royal Society Fellowship of the Royal Society (FRS, ForMemRS and HonFRS) is an award granted by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reputation Game
The reputation or prestige of a social entity (a person, a social group, an organization, or a place) is an opinion about that entity – typically developed as a result of social evaluation on a set of criteria, such as behavior or performance. Reputation is a ubiquitous, spontaneous, and highly efficient mechanism of social control. It is a subject of study in social, management, and technological sciences. Its influence ranges from competitive settings, like markets, to cooperative ones, like firms, organizations, institutions and communities. Furthermore, reputation acts on different levels of agency: individual and supra-individual. At the supra-individual level, it concerns groups, communities, collectives and abstract social entities (such as firms, corporations, organizations, countries, cultures and even civilizations). It affects phenomena of different scales, from everyday life to relationships between nations. Reputation is a fundamental instrument of social order, ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Education Game
Education is the transmission of knowledge and skills and the development of character traits. Formal education occurs within a structured institutional framework, such as public schools, following a curriculum. Non-formal education also follows a structured approach but occurs outside the formal schooling system, while informal education involves unstructured learning through daily experiences. Formal and non-formal education are categorized into levels, including early childhood education, primary education, secondary education, and tertiary education. Other classifications focus on teaching methods, such as teacher-centered and Student-centered learning, student-centered education, and on subjects, such as science education, language education, and physical education. Additionally, the term "education" can denote the mental states and qualities of educated individuals and the academic field studying educational phenomena. The precise definition of education is disputed, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norm (philosophy)
Norms are concepts ( sentences) of practical import, oriented to affecting an action, rather than conceptual abstractions that describe, explain, and express. Normative sentences imply "ought-to" (or "may", "may not") types of statements and assertions, in distinction to sentences that provide "is" (or "was", "will") types of statements and assertions. Common normative sentences include commands, permissions, and prohibitions; common normative abstract concepts include ''sincerity'', ''justification'', and ''honesty''. A popular account of norms describes them as reasons to take action, to believe, and to feel. Types of norms Orders and permissions express norms. Such norm sentences do not describe how the world ''is'', they rather prescribe how the world ''should be''. Imperative sentences are the most obvious way to express norms, but declarative sentences also may be norms, as is the case with laws or 'principles'. Generally, whether an expression is a norm depends on wha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philosophy Of Science (journal)
''Philosophy of Science'' is dedicated to the furthering of studies and free discussion from diverse standpoints in the philosophy of science. It is a peer-reviewed academic journal. Official affiliations In January 1934 ''Philosophy of Science'' announced itself as the chief external expression of the Philosophy of Science Association, which seems to have been the expectation of its founder, William Malisoff. The journal is currently the official journal of the Association, which Philipp Frank and C. West Churchman formally constituted in December 1947. Publication history Malisoff, who was independently wealthy, seems to have financed the launch of ''Philosophy of Science''. Correspondingly he became its first editor. In the first issue he sought papers ranging from studies on "the analysis of meaning, definition, symbolism," in scientific theories to those on "the nature and formulation of theoretical principles" and "in the function and significance of science within various ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Evolutionary Game Theory
Evolutionary game theory (EGT) is the application of game theory to evolving populations in biology. It defines a framework of contests, strategies, and analytics into which Darwinism, Darwinian competition can be modelled. It originated in 1973 with John Maynard Smith and George R. Price's formalisation of contests, analysed as strategies, and the mathematical criteria that can be used to predict the results of competing strategies. Evolutionary game theory differs from classical game theory in focusing more on the dynamics of strategy change. This is influenced by the frequency of the competing strategies in the population. Evolutionary game theory has helped to explain the basis of altruism (biology), altruistic behaviours in Darwinian evolution. It has in turn become of interest to economists, sociologists, anthropologists, and philosophers. History Classical game theory Classical non-cooperative game theory was conceived by John von Neumann to determine optimal strategies i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meaning (linguistics)
Semantics is the study of linguistic Meaning (philosophy), meaning. It examines what meaning is, how words get their meaning, and how the meaning of a complex expression depends on its parts. Part of this process involves the distinction between sense and reference. Sense is given by the ideas and concepts associated with an expression while reference is the object to which an expression points. Semantics contrasts with syntax, which studies the rules that dictate how to create grammatically correct sentences, and pragmatics, which investigates how people use language in communication. Lexical semantics is the branch of semantics that studies word meaning. It examines whether words have one or several meanings and in what lexical relations they stand to one another. Phrasal semantics studies the meaning of sentences by exploring the phenomenon of compositionality or how new meanings can be created by arranging words. Formal semantics (natural language), Formal semantics relies o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
