User contributions for Randallbsmith

17:5317:53, 11 February 2022 diff hist −10‎ Velocity-addition formula ‎ →‎Properties
17:4917:49, 11 February 2022 diff hist +1,501‎ Talk:Velocity-addition formula ‎ →‎Velocity composition not linear
00:0100:01, 11 February 2022 diff hist −21‎ Velocity-addition formula ‎ →‎Properties: While the prior statement was true, it is not what is meant by being non-linear. For example, for real numbers x and y, ax + by ≠ ab (x+y). For a function of two 3-vectors to one 3-vector such as being discussed, linearity would normally refer to the behavior under the same scaling of each domain variable. Tag: Reverted

17:0217:02, 6 January 2020 diff hist +96‎ Altered chord ‎ →‎Alt chord: I changed the example of the problem with leaving the "G7 alt" open to interpretation. First of all, no musician worth his or her salt would even include a natural 13 in an alt chord. It is not even in the alt scale. I was startled to read this, and went on to verify it with 3 other practicing musicians, one who has taught jazz theory for 5 decades. Secondly a more common pair of interpretations would be those I have given in the changed text.

23:4723:47, 12 March 2019 diff hist +223‎ Online transaction processing ‎ Tried to clarify the opening two paragraphs, as the grammar was poor, and the intent a bit foggy. I hope this is an improvement! ~~~~

22:5622:56, 5 July 2016 diff hist +60‎ m User:Randallbsmith ‎ Update to say now working at Oracle. current

17:0717:07, 9 July 2015 diff hist +181‎ Probit ‎ Anyone with even modest mathematical training will want to know that the probit is the inverse of the standard normal CDF, so this should be first. That alone is likely all many readers will need to know.

16:4516:45, 17 June 2015 diff hist +51‎ Regression analysis ‎ The work that follows this line does not apply to the parabolic expression immediately preceding it.

20:3220:32, 31 July 2014 diff hist +724‎ Talk:Critical band ‎ Wondering if a cited value is correct, as implications are apparently nonsensical. Suggesting rechecking the value or explaining why it isn't as crazy as it appears.

22:2122:21, 1 May 2014 diff hist −3‎ m Natural logarithm of 2 ‎ The previous value was wrong in the last place if interpreted as an approximate 11=place value. I removed the trailing ellipses, as that implies the rest of the value which would be exact.
19:1319:13, 1 May 2014 diff hist +816‎ Talk:Analysis of variance ‎ →‎Improve or remove use of "treatment," "factor," "factor level": new section

17:2517:25, 24 March 2014 diff hist +86‎ M/M/c queue ‎ →‎Number of customers in the system: The meaning of the "pi" quantity was undefined. It may be somewhat standard, but the link to defining a "probability mass function" does not use a pi notation.

21:2921:29, 9 December 2013 diff hist 0‎ IBeacon ‎ Misplaced period moved.
21:2821:28, 9 December 2013 diff hist −70‎ IBeacon ‎ →‎Latest Developments: A number of edits, intended to remove semantically empty language, correct the grammar, and clean up the prose.
21:1621:16, 9 December 2013 diff hist +6‎ IBeacon ‎ →‎Latest Developments: changed "everybody" to "many observers" in order to improve factual accuracy, as "everybody" is simply not true.
18:3218:32, 9 December 2013 diff hist −17‎ IBeacon ‎ cahnged "a couple months back" to mid 2013. In general time references should not be relative to the date of posting.

18:4518:45, 11 November 2011 diff hist +99‎ Price elasticity of demand ‎ →‎Effect on total revenue: I felt an equation would help relate this section to the previous sections and be a useful presence as the visitor reads through the following paragraphs.
18:3318:33, 11 November 2011 diff hist +232‎ Price elasticity of demand ‎ →‎Effect on total revenue: As it was, this first sentence of paragraph 2 was only true for the inelastic case, and the statement about percentages is mathematically incorrect, the "approximately" is needed.
18:1418:14, 11 November 2011 diff hist +86‎ Price elasticity of demand ‎ →‎Effect on total revenue: The "price effect," I added the the qualifiers "for inelastic goods". Otherwise it directly contradicts the later statement "when the price is raised, the total revenue falls" for the elastic case.

21:1421:14, 11 August 2011 diff hist +1‎ Talk:Hash join ‎No edit summary
21:1221:12, 11 August 2011 diff hist +383‎ Talk:Hash join ‎No edit summary
21:0821:08, 11 August 2011 diff hist +273‎ Hash join ‎ I've expanded the text in the "Classis hash join" section, as the actual contents of the hash table were not deescribed. I aso thought it wise to mention the the benefit of using a hash table.