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Specificity
| Глоссарий медицинских терминов |
- The rate of negative responses in a test from persons free from a disease. a high specificity means a low rate of false positives. compare sensitivity
- Специфичность
- The specificity of a classification rule is a measure of the rule`s ability to classify "negative" cases correctly. it is the ratio of the number of true negatives in a test set divided by the total number of negatives in that set. note that this is not the probability that a negative classification is actually a negative case. the latter depends on the proportion of positive and negative cases in the target set. see also: positive predictive value, sensitivity.
- Специфичность. для аналитического метода — степень избирательности данного метода по отношению толь- !130 :-
- The ability of the specific adaptive immune system to target specific pathogens or toxins
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Специфика, русский
- (от средневекового лат . specificus - особый, особенный), отличительные, характерные особенности, присущие только данному предмету, явлению.
- Особенность.
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Sensitivity, английский
- Change in the response of a measuring instrument divided by the corresponding change in the stimulus (1)
- The ratio of the output of an instrument to the input (i.e. -gain).
- Defines the smallest signal detectable in the presence of systems noise
- In television, a factor expressing the incident illumination upon a specified scene required to produce a specified picture signal at the output terminals of a television camera.
- For a camera usually specified in lux to provide indication of light level required to gain a full video signal from the camera.
- A measure of the amount of light required to provide a standard video signal. sensitivity values are stated in lux (see lux) or foot-candles.
- Lens iris aperture required to provide a video output signal of standard level at a specified light input. in general, sensitivity is measured using an 89.9% reflectance grey scale chart illuminated by a 3200? k illuminance at 2000 lux (color camera) or 400 lux (b/w camera), for a video output level of 100%.
- 1. the fact of being able to detect and respond to an outside stimulus 2. the rate of positive responses in a test from persons with a specific disease. a high rate of sensitivity means a low rate of people being incorrectly classed as negative. compare specificity
- Чувствительность; сенситивность; восприимчивость специфически измененная реактивность. вероятность возникновения реакции на введение антигенов. ср. susceptibility (восприимчивость (к болезни)).
- The sensitivity of classification rule is a measure of its ability to correctly classify observations into a particular category. it is defined to be the ratio of the number of true positives to the number of positives in a test set. this value is usually inversely related to the specificity of the test for a given set of data and a particular classification rule. note that this measure is different from the positive predictive value of a rule, which is a measure of the probability that a positive is a true positive. if multiple classification categories exist, each category will have its own sensitivity, specificity, and positive predictive value. see also: positive predictive value, specificity.
- Чувствительность: a) различие в концентрации аналита, соответствующее наименьшему обнару-живаемому различию в реакции метода. представляется наклоном калибровоч-ной кривой. иногда ошибочно используется для обозначения предела обнаружения. b) частота истинно положительных результатов, полученных при испытании проб, в которых, насколько известно, содержится аналит [55]. c) отношение изменения показаний измерительного прибора к соответствую-щему изменению измеряемой величины. измеряемой величиной может быть, например, количество исследуемого вещества, содержащееся в пробе.
- Чувствительность. в сенсорном анализе — способность различать, идентифицировать и/или дифференцировать (качественно и/или количественно) один или более раздражителей с помощью органов чувств (предварительный стандарт мос, 12). в аналитической химии — чувствительность метода, которая (для простого-метода)- характеризуется наклоном калибровочной кривой, т. е. является дифференциалом измеряемой величины по отношению к концентрации dx/dc. чувствительность не следует путать с наименьшим количеством или наиболее низкой концентрацией, которые можно обнаружить с помощью данного метода; правильный термин для обозначения этого понятия — предел чувствительности (см. limit of detection).
- The output of a microphone in volts for a given input in sound pressure level. sensitivity can also mean the sound pressure level (spl) a loudspeaker produces at one meter when driven with one watt of pink noise.
- The degree of confidentiality of an e-mail message or calendar item, ranging from normal to confidential.
- The significance level that must be reached before a notification is sent.
- Чувствительность:
- Measure of a sensor’s ability to detect small signals. see resolution.
- Ability of a sensor or system to distinguish a signal or indication from background noise. see also probability of detection.
- Ability of a sensor or system to distinguish a signal or indication from background noise. see also probability of detection. si (international system of units): international measurement system in which the following seven
- (1) performance characteristic of a penetrant system, of a developer, or of an entire penetrant process that provides a relative measure of the ability to detect discontinuities. (2) enumerated level of performance of a penetrant system determined by applying standardized processing procedures on reference standards with known defects. (3) ability of a sensor or system to distinguish a signal or indication from background noise. compare probability of detection.
- Probability of detection.
- Ability of signal to change with small changes of measured quantity.
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
Probability, английский
- Probability can be generally defined as a measure of how likely some event will occur. the event could be an explosion, a lottery win or perhaps cancer induction. mathematically speaking, the value of probability varies between 0 and 1 where 0 means an ev
- Вероятность. возможность.
- The probability of an event is a number between zero and 100%. the meaning (interpretation) of probability is the subject of theories of probability, which differ in their interpretations. however, any rule for assigning probabilities to events has to satisfy the axioms of probability.
- Вероятность
- Вероятность probability sample, syn. random sample
- Вероятность. мера случайности появления конкретного события. например, вероятность случайного выбора из популяции человека с конкретным качеством соответствует доле людей в популяции, обладающих этим качеством.
- Вероятность; возможность
- Вероятность; обеспеченность (гидрологической величины) ~ of no-failure вероятность безотказной работы
- Probability is a method for representing uncertainty about propositions or events. it represents the uncertainty about a proposition on a scale from 0 to 1, with a 0 representing complete certainty that the proposition is false or an event will not occur and a value of one will represent the opposite. formally, a probability measure is one that follows kolmogorov`s axioms. there are two main schools of thought on the meaning of probability. frequentists take a narrow interpretation of probability allowing only hypothetically repeatable events or experiments as being quantifiable by probability, while bayesians take a broader interpretation that allows reasoning about "one-shot" events and propositions based on the current knowledge about nature. the bayesian interpretation is most commonly used in artificial intelligence, while the frequentist interpretation is most commonly taught in statistics courses. the label "bayesian" arises from the central role that the bayes theorem plays in this use of probability. it allows one to reason from effects to causes and encourages the use of probability measures to describe supposedly fixed events or propositions which frequentists disallow. the probability for these events reflects one`s state of knowledge about the event, rather than being an assertion that the unknown event can vary. for example, a bayesian would have no qualms about making statements about the probability that a given die, rolled and hidden from his sight is, for example, a six. a frequentist would be unable to make such a statement, preferring to talk about his confidence in the method when applied to a hypothetically large number of repeated experiments. in the end, they would act in similar ways. when the long run data are available, bayesians and frequentists end up with the same estimates. see also: bayes theorem, kolmogorov`s axioms.
- Вероятность. математическое измерение возможности появления неко-его события, выраженное в виде дроби или процента [30]. значения статистической вероятности лежат в пределах от 1 или 100 процентов (всегда) до 0 или 0 процентов (никогда) [20]. наибольшее приближение к истинной вероятности дает относитель-ная частота события, полученная на основе большой серии измерений или результа-тов [33]. вероятность может быть также определена как выражение в некоторой неопределимой форме "степени уверенности" или как предельная частота события в бесконечной случайной последовательности [49].
- The likelihood of something happening. for example, sale being made.
- Вероятность. математическое измерение возможности появления некоего события, выраженное в виде дроби или процента [30]. значения статистической вероятности лежат в пределах от 1 или 100 процентов (всегда) до 0 или 0 процентов (никогда) [20]. наибольшее приближение к истинной вероятности дает относительная частота события, полученная на основе большой серии измерений или результатов [33]. вероятность может быть также определена как выражение в некоторой неопределимой форме "степени уверенности" или как предельная частота события в бесконечной случайной последовательности [49].
- The relative likelihood of a particular outcome among all possible outcomes.
- Likelihood that an event may occur, expressed as a number between 0 and 1.
Proportion, английский
- A quantity of something, especially as compared to the whole a high proportion of cancers can be treated by surgery. the proportion of outpatients to inpatients is increasing. ‘…the target cells for adult myeloid leukaemia are located in the bone marrow, and there is now evidence that a substantial proportion of childhood leukaemias also arise in the bone marrow’ [british medical journal]
- Доля; отношение; пропорция prospective (cohort) study
- Доля; отношение; пропорция
- In naval architecture, the length, breadth, and height of a vessel, having a due consideration to her rate, and the object she is intended for.
- Пропорция; состав (смеси и т.п.); пропорциональная часть || составлять, дозировать
Predictive, английский
Избирательности, русский
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Colour index, английский
The ratio between the amount of haemoglobin and the number of red blood cells in a specific amount of blood
Peak expiratory flow rate, английский
The rate at which someone can expel air from their lungs when they are full and with no time limit. abbr pefr
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