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Cautionary Note about R 2
Abstract The coefficient of determination (R 2) is perhaps the single most extensively used measure of goodness of fit for regression models. It is also widely misused. The primary source of the…
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Entropy and Correlation: Some Comments
  • T. O. Kvålseth
  • Computer Science
    IEEE Transactions on Systems, Man, and…
  • 1 May 1987
For measuring the degree of association or correlation between two nominal variables, a measure based on informational entropy is presented as being preferable to that proposed recently by Horibe…
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Note on Cohen's Kappa
Cohen's Kappa is a measure of the over-all agreement between two raters classifying items into a given set of categories. This communication describes a simple computational method of determining the…
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Evenness indices once again: critical analysis of properties
TLDR
One evenness index emerges as the preferred one, satisfying all properties and conditions, based directly on Euclidean distances between relevant species abundance distributions and has an intuitively meaningful interpretation in terms of relative distances between distributions.
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Coefficients of Variation for Nominal and Ordinal Categorical Data
Various measures of variation for categorical data which have been introduced suffer from the limitation that their numerical values generally appear to be unreasonable. This may cause their use to…
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Absolute judgment for one- and two-dimensional stimuli embedded in Gaussian noise.
TLDR
The results show that human performance, in terms of the information transmitted and rms error as functions of stimulus uncertainty, was significantly reduced as the noise variance increased.
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On Normalized Mutual Information: Measure Derivations and Properties
TLDR
This paper derives alternative upper bounds and extends those to the case of two discrete random variables and normalized mutual information (NMI) measures are then obtained from those bounds, emphasizing the use of least upper bounds.
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Note on biological diversity, evenness, and homogeneity measures
TLDR
Using the cocept of statistical odds, an alternative diversity measure with an appealing interpretation is formulated as a simple modification of the popular Simpson index.
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An alternative to Fitts’ law
A new power law of movement time for motor control tasks is proposed as an alternative to the classical Fitts’ law. A reanalysis of Fitts’ original data indicates that this power law may provide…
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Distribution of Movement Time in a Target-Aiming Task
TLDR
Various characteristics of the distribution of movement time were analyzed for a task involving serial and rotary arm movements aimed at a target, finding that the distribution tended to be unimodal and more peaked than a normal distribution, while the skewness and the kurtosis were not.
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