Timeline for How is the Herfindahl-Hirschman index different from entropy?
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 21, 2020 at 16:17 | comment | added | Nick Cox | (ctd) I suspect that many workers used it as an introduction early in their careers and then moved on to more specific papers, and either never noticed or don't care about its technical slips. | |
| Apr 21, 2020 at 16:14 | comment | added | Nick Cox | The popularity of various measures in any field seems to be related to whether its students, or even its practitioners, are all expected to understand logarithms. I have to flag that Magurran's book, while well known in ecology, was very carelessly copy edited and proof-read. As a technical guide it is unreliable. As a broad-brush introduction with engagement and enthusiasm about the topic as an ecological concept it arouses some affection in its field. | |
| Apr 21, 2020 at 16:11 | history | edited | Nick Cox | CC BY-SA 4.0 |
added 8 characters in body
|
| Apr 21, 2020 at 14:54 | history | edited | kjetil b halvorsen♦ | CC BY-SA 4.0 |
deleted 2 characters in body
|
| Apr 21, 2020 at 8:43 | comment | added | Nick Cox | Another general family is $\sum_i p_i^a [\ln (1/p_i)]^b$ so number of species is given by $a = b = 0$, HHI is $a = 2, b = 0$, Shannon entropy is $a = 1, b = 1$ (Good, Biometrika 1953). As others have flagged, HHI has been reinvented or rediscovered many times; among many other names, quadratic entropy is one I have seen. | |
| Apr 21, 2020 at 8:10 | history | bounty ended | bjarkemoensted | ||
| Apr 21, 2020 at 8:10 | vote | accept | bjarkemoensted | ||
| Apr 21, 2020 at 6:46 | history | answered | kjetil b halvorsen♦ | CC BY-SA 4.0 |