David

344 reputation

bio	website	plus.google.com/…
	location	Maryland
	age	41
visits	member for	2 years, 4 months
	seen	yesterday
stats	profile views	32

I'm a software engineer and system administrator at the University of Maryland.

	344 reputation	bio	website	plus.google.com/…	visits	member for	2 years, 4 months
19 badges		location	Maryland		seen	yesterday

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May 16	awarded	Popular Question
May 13	awarded	Caucus
Feb 7	revised	How to find bounds for $x$ and $y$ for this triple integral? fixed grammar in question title
Feb 7	suggested	suggested edit on How to find bounds for $x$ and $y$ for this triple integral?
Jan 4	comment	Bayes Theorem Example in Nate Silver's The Signal and the Noise "If we know that the first crash was a terrorist attack" .. but we don't know that. All we know is that there was a first crash. Knowing this, the probability that the first crash was a terrorist attack is not 100%. It's 38%. And the probability that we have just experienced an accidental crash is 61.5%.
Jan 4	comment	Bayes Theorem Example in Nate Silver's The Signal and the Noise Qiaochu: Regarding the first comment, APC and TPA aren't disjoint (mutually exclusive) when there have been 2 or more crashes, so the probabilities need not add up to 1. There is merit to your second comment. But the problem is that after the first plane crash, we don't know whether it was a terrorist attack or an accident. All we know is that a plane has crashed into a building. Later on, all we know is that two planes have crashed into buildings. The question after each crash is: how likely is it that a terrorist attack has occurred.
Jan 4	awarded	Editor
Jan 4	revised	Bayes Theorem Example in Nate Silver's The Signal and the Noise fixed spelling mistake
Jan 4	asked	Bayes Theorem Example in Nate Silver's The Signal and the Noise
Oct 17	awarded	Yearling
Sep 18	accepted	Counterexamples to “Naive Induction”
Sep 13	comment	Average Distance Between Random Points on a Line On the third line of the $\mathbb{E}(Y)$ derivation, shouldn't $d x_1$ and $d x_2$ be swapped? (Or the limits of the integrals.) Pedantic, I know.
Sep 13	awarded	Commentator
Sep 13	comment	Average Distance Between Random Points on a Line Care to elaborate, @Byron?
Sep 13	comment	Average Distance Between Random Points on a Line In the fourth sentence ("Moreover..") there are two places where on the RHS you wrote $x_2$ when you meant $x_1$, if I am not mistaken.
Sep 12	comment	Counterexamples to “Naive Induction” Thanks for the pointers, I missed those in my search. I now have enough material to keep me busy for awhile.
Sep 12	comment	Counterexamples to “Naive Induction” Thanks, André. These look great. I downloaded the AMM paper you referenced, too. They're interesting in their own right, but it will take some time to filter out those examples that are approachable to Eli (whom I'm babysitting tonight).
Sep 12	comment	Counterexamples to “Naive Induction” This is a good place to start, and very approachable. Thanks.
Sep 12	asked	Counterexamples to “Naive Induction”
May 1	accepted	Surjective Maps and right cancellation