20 results found for: “random”.

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Randomness

In common usage, randomness is the apparent or actual lack of definite pattern or predictability in information. A random sequence of events, symbols or...

Last Update: 2024-02-01T16:10:43Z Word Count : 4307 Synonim Randomness

Random House

Random House is an American book publisher and the largest general-interest paperback publisher in the world. It has several independently managed subsidiaries...

Last Update: 2024-03-02T21:20:15Z Word Count : 2974 Synonim Random House

Random number generation

Random number generation is a process by which, often by means of a random number generator (RNG), a sequence of numbers or symbols that cannot be reasonably...

Last Update: 2024-03-28T13:48:36Z Word Count : 4332 Synonim Random number generation

Random-access memory

Random-access memory (RAM; /ræm/) is a form of electronic computer memory that can be read and changed in any order, typically used to store working data...

Last Update: 2024-02-24T13:24:34Z Word Count : 5788 Synonim Random-access memory

Random variable

A random variable (also called random quantity, aleatory variable, or stochastic variable) is a mathematical formalization of a quantity or object which...

Last Update: 2023-12-11T18:46:32Z Word Count : 6206 Synonim Random variable

Random walk

mathematics, a random walk, sometimes known as a drunkard's walk, is a random process that describes a path that consists of a succession of random steps on...

Last Update: 2024-03-05T14:02:14Z Word Count : 7055 Synonim Random walk

Random forest

Random forests or random decision forests is an ensemble learning method for classification, regression and other tasks that operates by constructing a...

Last Update: 2024-03-22T23:26:55Z Word Count : 6305 Synonim Random forest

Random access

Random access (more precisely and more generally called direct access) is the ability to access an arbitrary element of a sequence in equal time or any...

Last Update: 2023-04-15T04:55:16Z Word Count : 544 Synonim Random access

Random number

and statistics, a random number is either Pseudo-random or a number generated for, or part of, a set exhibiting statistical randomness. A 1964-developed...

Last Update: 2024-03-07T21:26:00Z Word Count : 380 Synonim Random number

Randomization

Randomization is a statistical process in which a random mechanism is employed to select a sample from a population or assign subjects to different groups...

Last Update: 2024-03-26T23:35:28Z Word Count : 2641 Synonim Randomization

Bob Random

Bob Random (born January 29, 1945) is a Canadian character actor who appeared in both movies and television from the mid-1960s to the late 1980s. Random's...

Last Update: 2023-06-02T20:33:14Z Word Count : 281 Synonim Bob Random

So Random!

So Random! is an American Disney Channel sketch comedy series that premiered on June 5, 2011. It was announced as an independent series after Demi Lovato...

Last Update: 2024-03-17T15:05:48Z Word Count : 3555 Synonim So Random!

Randomizer

Randomizer may refer to: Scrambler, a telecommunications device Video game randomizers Random number generator This disambiguation page lists articles...

Last Update: 2023-04-05T01:16:04Z Word Count : 45 Synonim Randomizer

Random glucose test

A random glucose test, also known as a random blood glucose test (RBG test) or a casual blood glucose test (CBG test) is a glucose test (test of blood...

Last Update: 2024-02-11T17:30:08Z Word Count : 214 Synonim Random glucose test

Penguin Random House

Penguin Random House LLC is an Anglo-American multinational conglomerate publishing company formed on July 1, 2013, with the merger of Penguin Books and...

Last Update: 2024-03-26T09:10:43Z Word Count : 2961 Synonim Penguin Random House

Random vibration

engineering, random vibration is motion which is non-deterministic, meaning that future behavior cannot be precisely predicted. The randomness is a characteristic...

Last Update: 2024-03-18T15:35:11Z Word Count : 463 Synonim Random vibration

Random hexamer

A random hexamer or random hexonucleotides are for various PCR applications such as rolling circle amplification to prime the DNA. They are oligonucleotide...

Last Update: 2022-09-26T22:00:12Z Word Count : 112 Synonim Random hexamer

Random seed

A random seed (or seed state, or just seed) is a number (or vector) used to initialize a pseudorandom number generator. For a seed to be used in a pseudorandom...

Last Update: 2023-12-27T15:53:16Z Word Count : 242 Synonim Random seed

Random assignment

Random assignment or random placement is an experimental technique for assigning human participants or animal subjects to different groups in an experiment...

Last Update: 2023-11-10T00:22:35Z Word Count : 1360 Synonim Random assignment

Random projection

In mathematics and statistics, random projection is a technique used to reduce the dimensionality of a set of points which lie in Euclidean space. According...

Last Update: 2024-03-26T12:16:59Z Word Count : 1487 Synonim Random projection

Main result

Randomness

In common usage, randomness is the apparent or actual lack of definite pattern or predictability in information. A random sequence of events, symbols or steps often has no order and does not follow an intelligible pattern or combination. Individual random events are, by definition, unpredictable, but if there is a known probability distribution, the frequency of different outcomes over repeated events (or "trials") is predictable. For example, when throwing two dice, the outcome of any particular roll is unpredictable, but a sum of 7 will tend to occur twice as often as 4. In this view, randomness is not haphazardness; it is a measure of uncertainty of an outcome. Randomness applies to concepts of chance, probability, and information entropy. The fields of mathematics, probability, and statistics use formal definitions of randomness, typically assuming that there is some 'objective' probability distribution. In statistics, a random variable is an assignment of a numerical value to each possible outcome of an event space. This association facilitates the identification and the calculation of probabilities of the events. Random variables can appear in random sequences. A random process is a sequence of random variables whose outcomes do not follow a deterministic pattern, but follow an evolution described by probability distributions. These and other constructs are extremely useful in probability theory and the various applications of randomness. Randomness is most often used in statistics to signify well-defined statistical properties. Monte Carlo methods, which rely on random input (such as from random number generators or pseudorandom number generators), are important techniques in science, particularly in the field of computational science. By analogy, quasi-Monte Carlo methods use quasi-random number generators. Random selection, when narrowly associated with a simple random sample, is a method of selecting items (often called units) from a population where the probability of choosing a specific item is the proportion of those items in the population. For example, with a bowl containing just 10 red marbles and 90 blue marbles, a random selection mechanism would choose a red marble with probability 1/10. A random selection mechanism that selected 10 marbles from this bowl would not necessarily result in 1 red and 9 blue. In situations where a population consists of items that are distinguishable, a random selection mechanism requires equal probabilities for any item to be chosen. That is, if the selection process is such that each member of a population, say research subjects, has the same probability of being chosen, then we can say the selection process is random.According to Ramsey theory, pure randomness (in the sense of there being no discernible pattern) is impossible, especially for large structures. Mathematician Theodore Motzkin suggested that "while disorder is more probable in general, complete disorder is impossible". Misunderstanding this can lead to numerous conspiracy theories. Cristian S. Calude stated that "given the impossibility of true randomness, the effort is directed towards studying degrees of randomness". It can be proven that there is infinite hierarchy (in terms of quality or strength) of forms of randomness.


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