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Population entropy
| Глоссарий по вычислительной технике |
Энтропия совокупности
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Entropy, английский
- Энтропия
- Entropy is a measure of the disorganization or information within a system. the entropy is lowest when there is a certain outcome or state, and highest when all the possible states are equally likely. for a discrete system with k states, it is defined as where pi is the probability of being in state i. see also: fuzzy entropy, maximum entropy principle.
- ->statistical entropy, a measure of variation, dispersion or diversity; ->thermodynamic entropy, a measure of unusable energy. the similarity between the two types of entropy is merely formal in that both are expressed as the logarithm of a probability. t
- The level of disorder in a system.
- From the second law of thermodynamics, the measure of disorder in a system.
- A measure of the level of disorder or randomness in a closed system. it can be thought of either in the sense of thermodynamic/metabolic processes or the increasing molecular disorder in a structure. it can be thought of as the same process by which erosion occurs when soil is exposed to rain and wind.
Entropy -, английский
Энтропийная диаграмма
Entropy forward approach, английский
Метод внесения неупорядоченности
Entropy per second, английский
Энтропия в секунду
Entropy per symbol, английский
Энтропия на символ
Entropy unit, английский
Единица энтропии
Populat ion equivalent, английский
Populate, английский
To import prepared data using a software procedure rather than the end user entering the information.
Populated area, английский
Populated board, английский
Плата с интегральными схемами; плата с микросхемами
Populated database, английский
Наполненная база данных
Populated place, английский
Populating, английский
Начальная загрузка данных; наполнение (бд или таблицы)
Populating (a database), английский
Adding entries to a database or filling in gaps.
Populatio, латинский
Populatio [onis, f], латинский
Population, английский
- A definable set of individual units to which the findings from statistical examination of a sample subset are intended to be applied. the population will generally much outnumber the sample. in re-randomisation statistics the process of applying inference
- See stock.
- A collection of units being studied. units can be people, places, objects, epochs, drugs, procedures, or many other things. much of statistics is concerned with estimating numerical properties (parameters) of an entire population from a random sample of units from the population.
- A group or number of people living within a specified area or sharing similar characteristics (such as occupation or age).
- Население; народонаселение; генеральная совокупность (в выборочном наблюдении); популяция (биол)
- Население
- 1. the number of people living in a country or town population statistics show that the birth rate is slowing down. the government has decided to screen the whole population of the area. 2. the number of patients in hospital the hospital population in the area has fallen below 10,000.
- Популяция
- Население; популяция -
- Популяция. в клинических исследованиях совокупность субъектов, обладающих какими-либо одинаковыми признаками (пол, возраст, диагноз).
- Население; популяция
- Any group of individuals, usually of a single species, occupying a given area at the same time; groups of organisms with homologue (same) alleles. p. cycle: changes in the numbers of individuals in a population which repeatedly oscillate between periods of high and low density. p. density: allowing a mathematically precise reflection - pd. • absolute: pd = number of individuals/unit area or volume [1/m2] or [1/m3] • relative: pd allows only a simple comparison (pd <, =, >, ? etc.). p. dynamics: the variations in time and space in the sizes and densities of populations; distribution due to changing food resources - the stability of a population depends upon abiotic factors, intraspecific competition (density dependent), natality, mortality etc. p. ecology: the study of the variations in time and space in the sizes and densities of populations, and of the factors causing those variations. p. fluctuation: variations over time in the size of a population. p. growth: is zero, when the birth rate equals the death rate (see carrying capacity). nt+1 = nt + r nt, current number of individuals r = (natality + immigration) - (mortality+emigration) r, intrinsic rate of growth (see density) p. pyramid: a means of illustrating the age structure of a population diagrammatically, by placing the youngest age class at the base and stacking successive age classes above it. p. regulation : a tendency in a population for some factor to cause density to increase when it is low and to decrease nt, momentary number of individuals when it is high. n0, number of individuals at start
- Generally, a collection of individuals with common characteristics. in statistics, a potentially infinite collection of independent (->independence) units that include all units of a specified type with attention paid only to the agggregate (->aggregation) property of the collection. a sample of data drawn from this population is a subset of the units constituting this population and scientific generalizations from such samples are limited by the size of the population originally specified (->model, ->representation).
- The process of scanning content to compile and maintain an index.
- Fish of the same species inhabiting a specified geographic area.
Population, английский
Population (d`une agglomeration) specifiee par le projet, французский
Population (of sample), английский
Population (or universe), английский
- Совокупность или генеральная совокупность. (теоретиче-ская) совокупность, описываемая как группа людей, объектов или событий, объеди-ненных по крайней мере одним общим признаком [16].
- Совокупность или генеральная совокупность. (теоретическая) совокупность, описываемая как группа людей, объектов или событий, объединенных по крайней мере одним общим признаком [16].
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Ad hoc access, английский
Эпизодический доступ; незапланированный доступ
Entropy per symbol, английский
Энтропия на символ
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