In probability and statistics, an urn problem is an idealized mental exercise in which some objects of real interest (such as atoms, people, cars, etc.) are represented as colored balls in an urn or other container. One pretends to remove one or more balls from the urn; the goal is to determine the probability of drawing one color or another,
or some other properties. A number of important variations are described below.
An urn model is either a set of probabilities that describe events within an urn problem, or it is a probability distribution, or a family of such distributions, of random variables associated with urn problems.[1]
^Dodge, Yadolah (2003) Oxford Dictionary of Statistical Terms, OUP. ISBN 0-19-850994-4
In probability and statistics, an urnproblem is an idealized mental exercise in which some objects of real interest (such as atoms, people, cars, etc...
An urn is a vase, often with a cover, with a typically narrowed neck above a rounded body and a footed pedestal. Describing a vessel as an "urn", as opposed...
In probability theory, the Mabinogion sheep problem or Mabinogian urn is a problem in stochastic control introduced by David Williams (1991, 15.3), who...
"Ode on a Grecian Urn" is a poem written by the English Romantic poet John Keats in May 1819, first published anonymously in Annals of the Fine Arts for...
visualized as a generalization of the urnproblem with replacement (where each item from the urn is returned to the original urn before the next step). Consider...
defines the format of magnet links, a de facto standard for identifying files (URN) by their content, via cryptographic hash value rather than by their location...
The Ashes urn is a small urn made of terracotta and standing 10.5 cm (4.1 inches) high, long believed to contain the ashes of a cricket bail or the burnt...
example, assume that there are 5 green and 45 red marbles in the urn. Standing next to the urn, you close your eyes and draw 10 marbles without replacement...
uniform resource name (URN) by prefixing it with "urn:ISSN:". For example, Rail could be referred to as "urn:ISSN:0953-4563". URN namespaces are case-sensitive...
count Unseen species problem Unsolved problems in statistics Upper and lower probabilities Upside potential ratio – finance Urnproblem Ursell function Utility...
fruit bodies have earned it the common names crater cup, devil's urn and the gray urn. The asexual (imperfect), or conidial stage of U. craterium is a...
for URNs, stating that: URN architecture assumes a DNS-based Resolution Discovery Service (RDS) to find the service appropriate to the given URN scheme...
The Well Wrought Urn: Studies in the Structure of Poetry is a 1947 collection of essays by Cleanth Brooks. It is considered a seminal text in the New...
charge, code is compatible with other identifiers, such as DOI, PII and URN. Prior to January 2009, SICIs were valid DOI suffixes for registration at...
silver urn" is the same as the small terracotta urn given to Marylebone Cricket Club (MCC) by Bligh's widow after his death in 1927. The Ashes urn has never...
provides a unique number for each species. The LSID for Homo sapiens is urn:lsid:catalogueoflife.org:taxon:4da6736d-d35f-11e6-9d3f-bc764e092680:col20170225...
plant in the Bromeliaceae family. It is commonly called the silver vase or urn plant and is native to Brazil. This plant is probably the best known species...
OID URN out of UUIDs, like urn:oid:2.25.113059749145936325402354257176981405696. In that case, the unsigned decimal format is used. The "uuid" URN is recommended...
the resource or information about it; these are Uniform Resource Names (URNs). The web technologies that use URIs are not limited to web browsers. URIs...
Credal set Cox's theorem Principle of maximum entropy Information entropy Urnproblems Extractor Free probability Exotic probability Schrödinger method Empirical...
theory, which are also known as The Two Child Problem, Mr. Smith's Children and the Mrs. Smith Problem. The initial formulation of the question dates...
bearing an urn, which led to his mantra, "the power of the urn," allowing his main protégé The Undertaker to revive strength. His keeper-of-the-urn gimmick...
experiments: the 2-urn 2-color scenario and the 1-urn 3-color scenario. There are two urns each containing 100 balls. It is known that urn A contains 50 red...
Notation (URN). In URN the AOP is over all the intentional elements. AOP can also be applied over requirement modelling that uses problem frames as a...
For example, the agent wants to predict the color of balls drawn from an urn containing only red and black balls without any information about the ratio...
"The Heresy of Paraphrase" is the title of a chapter in The Well-Wrought Urn, a seminal work of the New Criticism by Cleanth Brooks. Brooks argued that...
were alternated with decision problems based on the 3-ball Ellsberg urn. In these rounds, subjects were presented with an urn containing 90 balls, of which...
members of the House of Habsburg. The bones of 145 Habsburg royalty, plus urns containing the hearts or cremated remains of four others, are here, including...
Global Information