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isomorphism

Overview page. Subjects: Psychology — Mathematics.

The existence of two or more substances (isomorphs) that have the same crystal structure, so that they are able to form solid solutions.

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Kendall's tau

Overview page. Subjects: Probability and Statistics — Psychology.

In statistics, an index of the degree of association between two variables measured on an ordinal scale or transformed to ranks. Its computation involves examining every pair of items and...

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Kruskal–Wallis test

Overview page. Subjects: Probability and Statistics — Psychology.

A non-parametric test for comparisons between more than two medians, using the relative rankings within the different samples.

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Louis Leon Thurstone

Overview page. Subjects: Probability and Statistics — Psychology.

(1887–1955; b. Chicago, IL; d. Chapel Hill, TN)

American psychometrician. Thurstone graduated from Cornell U with a BS in electrical engineering in 1912. This led to employment...

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Mach band

Overview page. Subjects: Psychology — Computing.

Illusory light and dark bands that are seen at the transitions between uniformly illuminated regions of uniform density. Mach bands arise because the human visual system is good at...

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McNemar test

Overview page. Subjects: Probability and Statistics — Psychology.

In statistics, a distribution-free test of the significance of changes, especially applicable to before-after designs of the effects of particular treatments in which scores are dichotomous...

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multiple range test

Overview page. Subjects: Psychology — Computing.

Significance tests for differences between means of several samples. The significance levels are adjusted to take account of the fact that more than one comparison is being made.

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neural computer

Overview page. Subjects: Computing — Psychology.

A computer system based on a neural network.

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optical flow

Overview page. Subjects: Computing — Psychology.

The instantaneous velocity of points in a retinal image or visual field, resulting either from movements of objects or images in the visual field or from movements of the head or eyes. Also...

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perceptron

Overview page. Subjects: Psychology — Computing.

An early type of single-layer neural network. An input array is covered by a set of feature detectors whose outputs are weighted, summed, and then thresholded to give a single binary...

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