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Gradient descent
| Глоссарий по искусственному интеллекту |
Gradient descent, or hill climbing, is a common technique for estimating parameters in machine learning algorithms such as neural nets or other regression style techniques. these algorithms "learn" by adjusting their parameters to minimize some error measure. at any given point in the learning process, the algorithm evaluates how a change in the parameters could decrease the current error and moves in that direction. typically, the algorithm determines the direction as a function of the derivative of the error function (its gradient) with respect to the parameters or a weighted derivative, where the matrix of second derivatives (the hessian matrix) determines the weights. once the direction has been chosen, it is multiplied by a learning rate parameter and added to the current values of the parameter vector. see also: learning rate, machine learning. grammer, augmented transition network see: augmented transition network grammer.
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Descent, английский
- Снижение, спуск; опускание
- N 1 спуск, снижение; 2 переход к частностям, подробностям (в речи, изло- жении ); 3 лог. вывод частной пропозиции из общей parsing
- Спуск судов
- The landing of troops for the purpose of invading a country. the passage down a river.
- The pixel offset of the bottom of an element with respect to its baseline.
- Acquisition of property through inheritance laws when there is no will (when a person dies
Descent, английский
Descent advisor, английский
Descent and distrbution statutes, испанский
State laws that provide for the distribution of estate property of a person who dies without a will. same as intestacy laws
Descent form the cross, английский
Descent gradient, английский
Descent into hell, английский
Descent of the burden, английский
Descente de la charge
Descent of the burden, английский
Descent orbit insertion, английский
Выведение на орбиту спуска [нисходящую орбиту]
Descent rate indicator, английский
Указатель вертикальной скорости снижения [спуска]
Descent starting point, английский
Descent to and maintain, английский
Снижайтесь и выдерживайте (высоту ...)
Descente, французский
Descente a poissons, французский
Descente d'eau fluviale, французский
Descente de gaz, французский
Descente de la charge, французский
Descente de vent, французский
Descente de vent;porte-vent, французский
Descente des charges, французский
Estimating, английский
- The process of calculating the cost of a project. this can be a formal and exact process or a quick and imprecise process.
- Составление сметы
Parameters, английский
Параметры
Algorithms, английский
Complex mathematical formulae or rules used to solve complex problems in cctv they are used to achieve digital compression of a video picture.
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
Derivative, английский
- Производная; модификация, вариант
- A substance which is derived from another substance
- N производный secondary ~ вторичный производный
- Производная
- A financial contract whose value is based on, or "derived" from, a traditional security (such as a stock or bond), an asset (such as a commodity), or a market index.
Derivatives, английский
- Производные финансовые инструменты, которые представляют ценность не сами по себе, а благодаря тем составляющим, из которых они “произведены” (например, фьючерс, опцион, опцион на фьючерс, etc.). испоьзуются для спекулятивных сделок, а также в целях хеджи
- Производные финансовые инструменты, которые пред¬ставляют ценность не сами по себе, а благодаря тем составляющим, из которых они «произведены» (например, фьючерс, опцион, опцион на фьючерс, etc.). используются для спекулятивных сделок, а также в це¬лях хеджирования.
- In the energy sector this generic term refers to specialized securities including options, futures, and forwards.
- Производные ценные бумаги
Transition, английский
- Переучивание; переподготовка
- N переход closed ~ закрытый слог (ант. open ~) normal ~ обычный переход open ~ открытый переход (ант. closed ~) percussive ~ ударный переход
- Переход от пластичного состояния к хрупкому
- A change in gait.
- Upward or downward change between gaits, speed, direction, or maneuvers.
- A move from one license, product, or license model to another. some examples of transitions are: a step-up to a higher edition; a move from on-premises to the cloud, or cloud to on-premises; or a move to or from a license model that is a hybrid of an online service and an on-premises product.
- An allowed path from one state to another.
- An animation effect that specifies how the display changes as a user moves from one item (such as a slide or web page) to another.
- In a statechart or activity diagram, a relationship between two states or action states or between a state and itself.
- Переход
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Germ watcher, английский
Germwatcher is a clips-based expert system that can monitor laboratory data for evidence of nosocomial (hospital-acquired), for reporting to the center for disease control (cdc). see also: http://www-uk.hpl.hp.com/people/ewc/list-main.html.
Grobian, английский
Grobian is an experimental rough sets analysis program. in addition to the usual analysis offered by programs such as rosetta, it also includes some alternate measures of the quality of the rough sets approximations and some additional statistical tests. see also: http://www.infj.ulst.ac.uk/~cccz23/grobian/grobian.html g2 see: gain control.
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