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Weight decay
| Глоссарий по искусственному интеллекту |
A form of penalized minimization used to reduce overfitting in modeling techniques such as neural networks. rather than attempt to minimize just the error term of the model, the technique attempts to minimize a weighted sum of the errors and the model complexity. weight decay is a specialized form of complexity penalty, usually a sum of the squared weights in the model. this form of penalty tends to shrink the large coefficients in favor of smaller coefficients. the amount of shrinkage depends on the parameter that controls the tradeoff between error minimization and the penalty term. this is sometimes referred to as the decay constant.
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Сокращение веса, русский
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Decay, английский
- The decomposition of wood by fungi.
- Also known as radioactive decay . radioactive substances undergo radioactive decay, the rate of which is determined by the properties of the radionuclide. as decay proceeds the resulting activity of the parent nuclide reduces and will eventually disappear
- The decomposition of wood substance by fungi.
- 1. the process by which tissues become rotten, caused by the action of microorganisms and oxygen 2. damage caused to tissue or a tooth by the action of microorganisms, especially bacteria verb (of tissue) to rot the surgeon removed decayed matter from the wound.
- N отмирание language
- Гниение
- Разложение. в химии атмосферы—исчезновение загрязняющего вещества из воздуха в результате абсорбции или химической реакции на поверхности земли, удаления с дождем или превращения в какое-либо другое вещество.
- The segment of the envelope of a note in which the envelope goes from maximum to some mid-range level. also, the decline in level of reverberation over time.
Decay (burnout) stage of a fire, английский
The fire consumes available fuel, temperatures decrease, fire gets less intense (nfpa 921).
Decay (mt), английский
The falling off to zero of the current in an electrical circuit. magnetic fields can also decay in a similar manner. this is important in demagnetization.
Decay (rt), английский
Spontaneous change of a nucleus with emission of a particle or a photon. for a definite quality of a nuclide, the rate of decay is usually expressed in terms of half-life. decay curve (rt)
Decay chain, английский
Цепочка радиоактивных распадов (напр., в выгруженном из реактора облученном топливе)
Decay coefficient, английский
Коэффициент затухания
Decay constant, английский
- The decay constant represents the probability of a decay of a radioactive material per unit time.
- Коэффициент затухания; постоянная затухания; постоянная времени затухания
Decay cooling, английский
Охлаждение отработавших твэл (хранение отработавших твэл до момента, пока произойдет распад коротко- живущих изотопов
Decay curve, английский
- Graph showing radioactive intensity as a function of time for an isotope. decay curves are used in determining exposure times in radiologic testing. decibel (db): logarithmic unit for expressing relative signal power, such as the loudness of a sound, in proportion to the intensity of a reference signal. one tenth of a bel. decibel in signal amplitude is twice that in signal power. one decibel equals ten times the base ten logarithm of the ratio of two powers.
- График, показывающий интенсивность радиоактивности изотопа как функцию времени. кривые затухания используются для определения времени воздействия при радиологических испытаниях. децибел (дб): логарифмическая единица выражения относительной мощности сигнала, например громкости звука, пропорционально интенсивности опорного сигнала. одна десятая часть бел. амплитуда сигнала в децибелах вдвое превышает мощность сигнала. один децибел равен десятикратному логарифму по основанию десяти отношения двух степеней.
- In radiographic testing, graph showing activity as a function of time for an isotope. decay curves are used in determining exposure times. decibel (db): logarithmic unit for expressing relative acoustic signal power, such as the loudness of a sound, in proportion to the intensity of a reference signal. decibel in signal amplitude is twice that in signal power. twenty decibels is commensurate with ten-fold voltage amplification.
Decay distance, английский
Decay heat, английский
Decay rate, английский
Decay rate., английский
Decay time, английский
- Время распада (время выдерживания радиоактивных отходов с целью снижения их радиоактивности перед подачей на переработку)
- Время спада импульса
- Also known as `reverberation time` or `rt`, the time it takes for reverberation to decay to 60db below the original sustained level.
Decay waveform, английский
Импульс затухания
Decayed, английский
Decayed knot, английский
Decayed tooth, английский
Гнилой зуб
Decayed wood., английский
Decaying motion, английский
Движение с затухающей амплитудой
Weight, английский
- A handicap one player gives another in a money game
- Вес
- 1. how heavy someone or something is what’s the patient’s weight? her weight is only 105 pounds she weighs only 105 pounds to lose weight to get thinner she’s trying to lose weight before she goes on holiday. to put on weight to become fatter he’s put on a lot of weight in the last few months. to gain in weight to become fatter or heavier 2. something which is heavy don’t lift heavy weights, you may hurt your back.
- The weight of leather is measured in ounces per square foot. weft: the set of yarns running horizontally to and interlaced with the warp to produce a woven fabric. also called filling. warp the threads that run vertically in a length of fabric. looms are strung with warp threads that are interwoven with weft threads. welting: fabric-covered cord sewn into upholstery edge seams to firmly define edge. adds strength and finished appearance to seams. welting a fabric-covered cord that is sewn into an upholstery seam. welted edges define the silhouette of a piece of furniture and strengthen the seams. patterned fabric is typically bias-cut for welting. smooth welted seams are a sign of quality upholstery. wet blue leather
- The value of a scorecard element in relation to the values of other elements of the same type.
- Either gross weight, net weight, or tare weight.
- The measurement of a stroke’s width. common names for weights include demibold, light, and bold. some typeface families have several weights, including ultra-bold and extra-light. refers to the heaviness of the stroke for a specific font, such as light, regular, book, demi, heavy, black, and extra bold.
- Масса, вес, тяжесть, груз
- Вес, масса, груз
Minimization, английский
- Минимизация
- Минимизация; сведение к минимуму
Overfitting, английский
- A term used in neural networks, recursive partitioning, and other automated modeling areas. if the training data is considered to consist both signal and noise (i.e., noisy data), a modeling technique has begun to overfit when it begins capturing the "noise" instead of the "signal." this usually occurs when a model is allowed to increase its number of "parameters`` such as regression coefficients, splits in recursive partitioning schemes, or hidden units in neural networks. the effect of overfitting is to reduce the applicability of the model to other data sets, (i.e., to limit its generalizability). in the extreme, the model can only "predict" its input. the most straight-forward way to eliminate this effect is to require a very large number of observations per parameter in the model.
- A problem in data mining when random variations in data are misclassified as important patterns. overfitting often occurs when the data set is too small to represent the real world.
Complexity, английский
- Сложность
- Сложность; уровень сложности; комплексность
- Что-либо сложное
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Fassom, английский
A form of kohonen network. the name was derived from "feedback controlled supspace som." see also: assom, som, http://www.cis.hut.fi/nnrc/new_book.html. fastrak-apt fastrak-apt is a project scheduling expert system developed by hyundai engineering and construction. it is used for generation, verifying, and modifying construction project pert-cpm networks. it uses case based reasoning and constraint-based reasoning to assist human project planners. see also: case based reasoning.
Spectral analysis, английский
A form of time series analysis that treats the observed sequence of events or measurements as being analogous to a radio or similar signal. the signal is assumed to be a mix of "pure" signals at various frequencies and the model estimates the power (amplitude) at the various frequencies. typically the signals are represented by a fourier series, a mixture of sine and cosine functions. other basis functions can also be used, such as hadamard functions (which take on values of 1 and -1) or wavelets. see also: time series analysis, box-jenkins analysis.
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