Probability vector: Revision history

21 February 2026

• curprev 13:4313:43, 21 February 2026 EloiseHardy talk contribs 13,179 bytes +12 Link suggestions feature: 3 links added. undo Tags: Visual edit Mobile edit Mobile web edit Newcomer task Suggested: add links

28 December 2025

• curprev 01:5501:55, 28 December 2025 FiveCubedIs125 talk contribs m 13,167 bytes +16 No edit summary undo Tag: Visual edit

25 November 2025

• curprev 02:0602:06, 25 November 2025 Timmy TRT talk contribs m 13,151 bytes −18 →Properties of the probability simplex: tried to reference the specific chapters in Cover and Gallier, and they appear as numbers without the name chapter? oh well undo
• curprev 01:5401:54, 25 November 2025 Timmy TRT talk contribs 13,169 bytes +1,661 →Properties of the probability simplex: added a bullet expressing the volume of the probability simplex as a function of the number of outcomes. undo

12 November 2025

• curprev 19:3619:36, 12 November 2025 ~2025-33203-08Temporary account has expired talk 11,508 bytes +10 →Properties of the probability simplex: added the word Euclidean to emphasize the difference in measure. undo

7 November 2025

• curprev 16:5316:53, 7 November 2025 Timmy TRT talk contribs m 11,498 bytes +16 →Properties of the probability simplex undo
• curprev 16:4216:42, 7 November 2025 Timmy TRT talk contribs 11,482 bytes +302 fixed some references and add a note on the meaning of space in a hypercube. undo

4 November 2025

• curprev 19:3919:39, 4 November 2025 Timmy TRT talk contribs 11,180 bytes +989 →Properties of the probability simplex: Added a description of the hypercube that contains the simplex to set up the logic of why the simplex becomes a vanishingly small proportion of the cubes content as n increases. undo

28 October 2025

• curprev 16:4916:49, 28 October 2025 Timmy TRT talk contribs 10,191 bytes +515 →Properties of the probability simplex: added a line to explicitly state the significance of affine independence for the simplex undo
• curprev 01:2401:24, 28 October 2025 Timmy TRT talk contribs 9,676 bytes +2,191 Started a section on the properties of the simplex, mostly just explaining so far its overall characteristics undo

25 October 2025

• curprev 19:1819:18, 25 October 2025 Timmy TRT talk contribs 7,485 bytes −230 →Geometry of the probability simplex: removed the formula for a general simplex and focused this section on the probability simplex undo

21 October 2025

• curprev 13:1613:16, 21 October 2025 Timmy TRT talk contribs m 7,715 bytes −1 →Geometry of the probability simplex: edited Boyd reference to include access date undo
• curprev 13:1313:13, 21 October 2025 Timmy TRT talk contribs m 7,716 bytes +91 →Geometry of the probability simplex: added pdf version of Boyd to the references undo
• curprev 13:0013:00, 21 October 2025 Timmy TRT talk contribs 7,625 bytes +1,891 Replaced the subsection on Geometry with Geometry of the probability simplex explaining the convex, affine, and probabilistic interpretation of the simplex; sources: Boyd & Vandenberghe (2004), Murphy (2012). undo

18 October 2025

• curprev 22:5822:58, 18 October 2025 Timmy TRT talk contribs 5,734 bytes +844 added section on the significance of the bounds on variance undo
• curprev 22:3322:33, 18 October 2025 Timmy TRT talk contribs 4,890 bytes +480 →Properties: added the bounds on the variance undo

17 October 2025

• curprev 18:1518:15, 17 October 2025 Timmy TRT talk contribs 4,410 bytes +267 rewrote to properties section with sources and moved it above the geometry section undo

16 October 2025

• curprev 21:5321:53, 16 October 2025 Timmy TRT talk contribs 4,143 bytes +226 Added Source: Calls the vector that sums to 1 and has non negative elements a probability vector, by implication the values are <1 undo

14 October 2025

• curprev 15:2915:29, 14 October 2025 Timmy TRT talk contribs m 3,917 bytes −116 took out redundancy in mentioning discrete random variable undo

13 October 2025

• curprev 23:2523:25, 13 October 2025 Timmy TRT talk contribs m 4,033 bytes +7 spell out prob undo
• curprev 23:2223:22, 13 October 2025 Timmy TRT talk contribs m 4,026 bytes 0 of to to undo
• curprev 23:2123:21, 13 October 2025 Timmy TRT talk contribs 4,026 bytes +928 introduces in an accessible way the idea of an experiment and the concept of a Discrete Random Variable which may not be familiar of every reader undo

11 October 2025

• curprev 20:4220:42, 11 October 2025 AnomieBOT talk contribs m 3,098 bytes +54 Dating maintenance tags: {{Unreferenced section}} undo
• curprev 20:2220:22, 11 October 2025 Jonesey95 talk contribs 3,044 bytes +75 unref sections undo
• curprev 20:2220:22, 11 October 2025 Jonesey95 talk contribs 2,969 bytes −4,101 rv to last working version before addition of unsourced text. Please see WP:V. undo Tag: Undo
• curprev 19:4019:40, 11 October 2025 Timmy TRT talk contribs 7,070 bytes +1,427 Added an exposition on the case of n=1 undo

10 October 2025

• curprev 20:1420:14, 10 October 2025 Timmy TRT talk contribs 5,643 bytes +390 added two more derivatives the ln||p||. might help those interested in info measures, and the 1/||p|| relevant to scaling, undo

9 October 2025

• curprev 22:4522:45, 9 October 2025 Timmy TRT talk contribs m 5,253 bytes −24 →Properties undo
• curprev 22:4522:45, 9 October 2025 Timmy TRT talk contribs m 5,277 bytes +68 made all bullets consistent undo
• curprev 22:4022:40, 9 October 2025 Timmy TRT talk contribs 5,209 bytes +132 added the derivative of the norm squared cuz its the simplest relationship between the geometry and the algebra, norm and variance. undo
• curprev 22:1322:13, 9 October 2025 Timmy TRT talk contribs 5,077 bytes +203 added the formula for the 2nd derivative in anticipation of a discussion of the curvature of the sensitivity of the norm to the variance. undo

7 October 2025

• curprev 20:3520:35, 7 October 2025 Timmy TRT talk contribs m 4,874 bytes −22 added vector arrow to norm in properties and kept the derivative formula inline. undo
• curprev 20:1820:18, 7 October 2025 Timmy TRT talk contribs m 4,896 bytes 0 →Properties undo
• curprev 20:1720:17, 7 October 2025 Timmy TRT talk contribs m 4,896 bytes +16 changed the designation of a probability vector to add an arrow above it in keeping with the theme of the page which is treating probability as a vector rather than as a mass or a Random Variable outcome. undo
• curprev 14:1114:11, 7 October 2025 Timmy TRT talk contribs m 4,880 bytes +16 changing the x_1 for just an indication that what follows is simply an example of a probability vector, not some sequence undo
• curprev 14:0714:07, 7 October 2025 Timmy TRT talk contribs m 4,864 bytes +18 →Geometric interpretation undo
• curprev 13:5713:57, 7 October 2025 Timmy TRT talk contribs 4,846 bytes +175 →Properties undo

3 October 2025

• curprev 15:1215:12, 3 October 2025 Timmy TRT talk contribs 4,671 bytes +665 Rewrote the introduction to introduce the idea of the underlying experiment and connecting it to discrete random variables. undo

2 October 2025

• curprev 22:0722:07, 2 October 2025 Timmy TRT talk contribs 4,006 bytes +130 added the formula for the derivative with respect to n of the maximum variance undo

1 October 2025

• curprev 17:0517:05, 1 October 2025 Timmy TRT talk contribs 3,876 bytes +816 Added a paragraph on the significance of the bounds on variance listed in the properties. undo
• curprev 01:4401:44, 1 October 2025 Timmy TRT talk contribs 3,060 bytes +91 →Properties: I added the bounds on the variance undo

26 November 2024

• curprev 23:4823:48, 26 November 2024 Obtuse Wombat talk contribs 2,969 bytes +3 Fix for parallel construction. undo
• curprev 23:4523:45, 26 November 2024 Obtuse Wombat talk contribs 2,966 bytes +18 Reword for clarity. undo

14 January 2022

• curprev 17:2517:25, 14 January 2022 Sebastianleroy talk contribs 2,948 bytes +74 #suggestededit-add 1.0 undo Tags: Mobile edit Mobile app edit Android app edit

18 May 2021

• curprev 06:0206:02, 18 May 2021 Breandan talk contribs m 2,874 bytes +29 Add Dirichlet distribution to see also undo

11 April 2021

• curprev 01:2001:20, 11 April 2021 Hellacioussatyr talk contribs m 2,845 bytes +34 →Properties: Inline markers undo Tag: Visual edit

26 March 2021

• curprev 21:0221:02, 26 March 2021 Hellacioussatyr talk contribs 2,811 bytes +37 →Examples undo Tags: Mobile edit Mobile web edit Advanced mobile edit

3 June 2020

• curprev 10:3010:30, 3 June 2020 Shhhnotsoloud talk contribs 2,774 bytes −26 Amend hatnote undo

28 August 2019

• curprev 18:2218:22, 28 August 2019 Bender235 talk contribs m 2,800 bytes +1 →Geometric interpretation: Typo fixing, typo(s) fixed: Therefore → Therefore, undo Tag: AWB

20 July 2016

• curprev 10:4810:48, 20 July 2016 Boriaj talk contribs 2,799 bytes −497 →Geometric interpretation: Corrected mistake about the standard simplex and added extra explanation. undo