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Nonparametric
| Глоссарий по искусственному интеллекту |
A procedure is nonparametric if it does not rely upon "simple" parametric forms in the data, such as a gaussian, poisson, or binomial distributions. typically, a nonparametric distribution relies upon the data to form the distribution, and derives its properties from the way the data was sampled (selected) and the way in which it is manipulated (e.g., randomization tests, classification trees). this makes the procedure more robust, but less efficient when a parametric distribution is reasonable. for example, a tree-based classifier can outperform a logistic regression when the data are not linear, but will be less effective when the data do meet the linearity assumptions of a logistic regression. note that nonparametric procedures essentially treat the data as the distribution, so that the base distribution involved is the observed data distribution, which is a form of a tabular distribution. these procedures are sometimes called "distribution free," again meaning "doesn`t use a simple parametric form," rather than "doesn`t have any distribution." see also: parametric distribution. non-terminal symbol a symbol in a grammar that can be rewritten into further symbols when processing a statement. see also: production, terminal symbol. non-von a family of massively parallel computer architectures developed at columbia university in the mid-1980s. the systems are characterized by a special form of "active memory", consisting of many elements each with a small amount of local memory, a specialized cpu, and i/o switches that permit the machine to be dynamically reconfigured.
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Parametric, английский
Параметрический
Distributions, английский
- Cash or other assets paid from the vehicle to its investors as a share of income or gains from operations or a return of capital.
- Payments from fund or corporate cash flow. may include dividends from earnings, capital gains from sale of portfolio holdings and return of capital. fund distributions can be made by check or by investing in additional shares. funds are required to distribute realized capital gains (if any) to shareholders at least once per year if they are not to be taxed by the fund itself. some corporations offer dividend reinvestment plans (drp).
Distribution, английский
- Распределение. размещение.
- Распределение - рыночный процесс, при котором крупные рыночные трейдеры в основном продают бумаги мелким трейдерам;
- The distribution of a set of numerical data is how their values are distributed over the real numbers. it is completely characterized by the empirical distribution function. similarly, the probability distribution of a random variable is completely characterized by its probability distribution function. sometimes the word "distribution" is used as a synonym for the empirical distribution function or the probability distribution function. if two or more random variables are defined for the same experiment, they have a joint probability distribution.
- Refers to the spread and shape of a frequency curve of some variable. a histogram is one way to graphically display the distribution of test results by showing the frequency of observations on the y-axis versus the magnitude on the x-axis. the normal or gaussian curve is one form of a distribution.
- Распределение
- Торговля; сфера обращения; распределение
- A way to limit where your usenet postings go. handy for such things as for sale messages or discussions of regional politics.
- The movement of freshly mixed concrete toward the point of placement, either by motorized tools or by hand. distribution-bar reinforcement, distribution
- N дистрибуция complementary ~ дополнительная дистрибу- ция, отношение дополнительности5 contrastive ~ контрастная, контрастирущая дистрибуция non-contrastive ~ неконтрастная, неконтра- стирущая дистрибуция distribution(al)
- Распределение dna (deoxyribonucleic acid)
- Распределение. 1. распределение данных. данные могут иметь определенную форму (вид) распределения, которая зависит от их характеристик. например, рост имеет нормальное распределение (см. normal distribution), а результаты метания игральных костей следуют равномерному (случайному) распределению. 2. распределение (распространение) вещества и его метаболитов в организме после применения препарата. обычно описывается с помощью объема распределения (см. volume of distribution) и свободной фракции.
- Diamond pattern
- A payout of cash or property from a corporation to a shareholder.
- Распределение; размещение; распространение; разводка (труб) ~ of bending stresses over the cross
- Распределение. ранжирование значений переменной от наименьшего до наибольшего и результирующая совокупность характеристик или показателей, выстроенных в виде графика [20]. плотность распределения, например, показывает возможные значения параметра в зависимости от числа появлений каждого значения в выборке или совокупности. во многих случаях это характеризует разброс единич-ных значений выборки или совокупности вокруг среднего значения.
- The delivery of electricity to the retail customer’s home or business through low voltage distribution lines.
- The spatial range of a species, usually on a geographic but sometimes on a smaller scale, or the arrangement or spatial pattern of a species over its habitat. • food resources will lead to this distribution. d. over space: • altitude: species diversity less abundant in higher than lower altitudes. • latitude: ecosystems are more complex in equatorial regions than in higher latitudes (poles) • scale: the greater the sample the better interpretability. • spatial: • aggregated or clump d.: individuals form one or more clumps, attracted to areas with the greatest availability of food or shelter and avoiding less hospitable terrain. • random d.: individual spacing would be determined by chance. • regular or uniform spacing d.: individuals may also be drawn together by some social interaction, such as mating or parental care. in other cases, antagonistic interactions between individuals or scarce d. over time: • habitat: (see there). • succession (see there).
- The transport of low voltage electricity. this connects the transmission network with the majority of electricity consumers. the process is overseen by a distribution network operator. management of distribution is a natural monopoly due to the economies of scale inherent to it. reeep / sustainable energy regulation network – august 2004 - revised september 2010 4
- The set of values of a variable together with the probabilities (->probability) associated with each. a tabulation of the frequencies of tokens by types.
- The process of managing the flow of goods and services from the producer to the customer.
- Распределение. ранжирование значений переменной от наименьшего до наибольшего и результирующая совокупность характеристик или показателей, выстроенных в виде графика [20]. плотность распределения, например, показывает возможные значения параметра в зависимости от числа появлений каждого значения в выборке или совокупности. во многих случаях это характеризует разброс единичных значений выборки или совокупности вокруг среднего значения.
- The act or process of delivering electric energy from convenient points on the transmission system (usually a substation) to consumers.
- Выплата дивидендов
Properties, английский
- A dockable window that displays the properties that are set on the selected object. in most cases, the property values can be edited in the window.
- A ui element that users can click to display information about a selected object.
Randomization, английский
- Рандомизация. процесс назначения пациенту одного из нескольких возможных видов лечения на случайной основе с целью минимизировать исходные различия между группами. нс: процесс распределения субъектов исследования по группам лечения или контроля случайным образом, позволяющий свести к минимуму субъективность.
- Рандомизация
Classification, английский
- Assigning data (i e , cases or observations) cases to one of a fixed number of possible classes (represented by a nominal output variable)
- Классификация; систематизация; засекречивание
- Классификация (упорядоченная группировка явлений и объектов; может утверждаться в качестве стандарта, в том числе национального или международного), см. nomenclature
- The work of putting references or components into order so as to be able to refer to them again and identify them easily the abo classification of blood
- Классификация
- N классификация language typological ~ типологическая классификация classificatory a классификационный matrix classifying a классифицирующий article
- The placement of an item under the correct number in the customs tariff for duty purposes. at times this procedure becomes highly complicated; it is not uncommon for importers to resort to litigation over the correct duty to be assessed by the customs on a given item
- Классификация; категоризация; сортировка
- The process of assigning a set of records from a database (observations in a dataset) into (usually) one of ``small" number of pre-specified disjoint categories. related techniques include regression, which predicts a range of values and clustering, which (typically) allows the categories to form themselves. the classification can be "fuzzy" in several senses of the word. in usual sense, the classification technique can allow a single record to belong to multiple (disjoint) categories with a probability (estimated) of being in each class. the categories can also overlap when they are developed either through a hierarchical model or through an agglomerative technique. finally, the classification can be fuzzy in the sense of using "fuzzy logic" techniques. see also: clustering, fuzzy logic, regression. classification and regression trees (cart) classification and regression trees (cart) is a particular form of decision tree used in data mining and statistics.
- Классификация. для порошков (пыли)—разделение образца на фракции по размеру, форме и плотности частиц с помощью жидкости; основано, например, на различной скорости оседания фракций в жидкости или на разном поведении частиц в потоке жидкости.
- A systematic organization of classes.
- The placement of an incident into a hierarchy of descriptors that indicate what the incident is generally about. for example, an incident could be classified as being related to software, and then to microsoft, and then to word 2003.
- The type of updates that sce downloads from microsoft update during synchronization.
- An offender is classified for a particular security level and housed in an appropriate facility based on assessment of their crime, security risk and prison behavior.
- A code which provides a method for categorizing the invention.
- The code for a specific type of complementary work or variation.
- Классификация, номенклатура
Reasonable, английский
Razonable
Classifier, английский
- Классификатор
- A superclass that includes class, data type, and interface subclasses. because all classifier subclasses share the same syntax, they are all represented by the same rectangle model element.
Outperform, английский
- Превосходить по своим эксплуатационным качествам; выполнять с улучшенными качествами
- In general, this means to do better than some particular benchmark. mutual fund xyz is said to outperform the s&p500 if its return exceeds the s&p500 return. however, this language does not take risk into account. that is, one might have a higher return than the benchmark in a particular year because of higher risk exposure. outperform is also a term used by analysts to describe the prospects of a particular company. usually, this means that the company will do better than its industry average. related: underperform.
Regression, английский
- Statistical technique used to evaluate relationships among variables (22).
- Регрессия
- 1. a stage where symptoms of a disease are disappearing and the person is getting better 2. (in psychiatry) the process of returning to a mental state which existed when the person was younger
- Regression commonly refers to the process of developing an empirical (data-driven) model to predict and/or explain one or more attributes in a database or set of data. it is most frequently associated with the simple linear model (y=mx+b) taught in most introductory statistics courses; the same ideas have been extended in many directions, including classification problems. when the emphasis is on hypothesis testing and simple models, the regression output is typically a few parameters that provide a direct linkage from the input variables to the predicted variables (or classification). in other situations the emphasis is on explaining as much of the variability in the output variables as is "reasonable" from the input variables. in this case, there are a number of "advanced" techniques, such as smoothing splines, decision trees, neural nets, and so forth, for which there are many "free" parameters. the meaning of any one of these parameters can be obscure. many data mining techniques are, at their core, variations on well-known regression techniques. see also: classification, clustering, decision trees, neural nets.
- The reappearance of a previously fixed problem.
- The statistical process of predicting one or more continuous variables, such as profit or loss, based on other attributes in the dataset.
- A mathematical technique used to explain and/or predict. the general form is y = a + bx + u, where y is the variable that we are trying to predict; x is the variable that we are using to predict y, a is the intercept; b is the slope, and u is the regression residual. the a and b are chosen in a way to minimize the squared sum of the residuals. the ability to fit or explain is measured by the r-square.
- A seaward retreat of a shoreline, generally expressed as a seaward
Procedures, английский
Standard, detailed steps that prescribe how to perform specific tasks.
Essentially, английский
- По существу; главным образом см. substantially
- No существу; главным образом
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Probability tree, английский
A probability tree is a tree of events or actions with probabilities attached to the arcs. it provides a convenient way to represent and compute the probabilities associated with complex events or states. probably approximately correct (pac) learning model a probably approximately correct (pac) learning model is a machine-learning model that attempts to bound the error rate of the model so that with probability p the error in the final rule for a concept is less than some specified value e. the model assumes it can learn from some external source that will present random samples from the attribute space, chosen according to some unknown distribution over the attribute space. the random sampling and the unknown distribution are required in order to calculate the value p. it is usually assumed that the distribution is stationary over time. pac models can efficiently learn concepts that can be represented by conjunctions of binary attributes. see also: machine learning.
Advice taker, английский
A program proposed by j. mccarthy that was intended to show commonsense and improvable behavior. the program was represented as a system of declarative and imperative sentances. it reasoned through immediate deduction. this system was a forerunner of the situational calculus suggested by mccarthy and hayes in a 1969 article in machine intelligence.
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