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pro vyhledávání: '"Tarald O. Kvålseth"'
Autor:
Tarald O. Kvålseth
Publikováno v:
Ecology and Evolution, Vol 14, Iss 9, Pp n/a-n/a (2024)
Abstract Richness and evenness, two important components of diversity, have been the subject of numerous studies exploring their potential dependence or lack thereof. The results have been contradictory and inconclusive, but tending to indicate only
Externí odkaz:
https://doaj.org/article/6bdd857c663f41fd9b91b0cf8b224a2d
Autor:
Tarald O. Kvålseth
Publikováno v:
PLoS ONE, Vol 17, Iss 7 (2022)
As measures of concentration, especially for market (industry) concentration based on market shares, a variety of different measures or indices have been proposed. However, the various indices, including the two most widely used ones, the concentrati
Externí odkaz:
https://doaj.org/article/1260817143874909b1aca6bb35efb145
Autor:
Tarald O. Kvålseth
Publikováno v:
Heliyon, Vol 4, Iss 10, Pp e00846- (2018)
While the two most widely used measures of market (industrial) concentration, the m-firm concentration ratio CRm and the Herfindahl-Hirschman index H, have no precise functional relationship, they can be related by means of boundary formulations. Suc
Externí odkaz:
https://doaj.org/article/bd34d86a160346d5accb502f4ff84fad
Autor:
Tarald O. Kvålseth
Publikováno v:
Entropy, Vol 16, Iss 9, Pp 4855-4873 (2014)
Besides its importance in statistical physics and information theory, the Boltzmann-Shannon entropy S has become one of the most widely used and misused summary measures of various attributes (characteristics) in diverse fields of study. It has also
Externí odkaz:
https://doaj.org/article/1dde766676fa4496a007c3a08da78916
Autor:
Tarald O. Kvålseth
Publikováno v:
Journal of Probability and Statistics, Vol 2015 (2015)
As measures of interobserver agreement for both nominal and ordinal categories, Cohen’s kappa coefficients appear to be the most widely used with simple and meaningful interpretations. However, for negative coefficient values when (the probability
Externí odkaz:
https://doaj.org/article/76edf271057b494183b01a31e2a10ce4
Autor:
Tarald O. Kvålseth
Publikováno v:
Entropy, Vol 19, Iss 11, p 631 (2017)
Starting with a new formulation for the mutual information (MI) between a pair of events, this paper derives alternative upper bounds and extends those to the case of two discrete random variables. Normalized mutual information (NMI) measures are the
Externí odkaz:
https://doaj.org/article/1cfc700895b5419d91fb16f899cb6a01
Autor:
Tarald O. Kvålseth
Publikováno v:
Entropy, Vol 18, Iss 5, p 159 (2016)
As a measure of randomness or uncertainty, the Boltzmann–Shannon entropy H has become one of the most widely used summary measures of a variety of attributes (characteristics) in different disciplines. This paper points out an often overlooked limi
Externí odkaz:
https://doaj.org/article/cf12ac161d314d8f97b7895cdd676bc6
Autor:
Tarald O. Kvålseth
Publikováno v:
Contemporary Economics. 16:51-60
The Herfindahl-Hirschman index (HHI) appears to be the most widely used index of market or industrial concentration. It is a summary measure that indicates the degree of competition, market power, and efficiency within a market or an industry. The HH
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d894842f39f8dd44408094d28f104a5
https://doi.org/10.5709/ce.1897-9254.468
https://doi.org/10.5709/ce.1897-9254.468
Autor:
Tarald O. Kvålseth
Publikováno v:
PloS one. 17(7)
As measures of concentration, especially for market (industry) concentration based on market shares, a variety of different measures or indices have been proposed. However, the various indices, including the two most widely used ones, the concentrati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::90f2fe11a8a01ac9f36dbcad2667dbda
https://pubmed.ncbi.nlm.nih.gov/35849576
https://pubmed.ncbi.nlm.nih.gov/35849576
Autor:
Tarald O. Kvålseth
Publikováno v:
The British journal of mathematical and statistical psychologyReferences. 74
Hick's law, one of the few law-like relationships involving human performance, expresses choice reaction time as a linear function of the mutual information between the stimulus and response events. However, since this law was first proposed in 1952,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df599be0941f7bab50724ddc6ff1f4fb
https://pubmed.ncbi.nlm.nih.gov/33569767
https://pubmed.ncbi.nlm.nih.gov/33569767