olooney

21 ms·

151.
by olooney 6y ago
500 Error for me.
152.
by olooney 6y ago
Is this not just the trapezoidal rule for numeric integration? https://en.wikipedia.org/wiki/Trapezoidal_rule It's not even a particular good choice for the specific problem (glucose curve) because the trapezoidal
153.
by olooney 7y ago
Very neat. Picking up the exponentiation by squaring algorithm for free by implementing Semigroup is a really nice touch. Since you're defining your own custom Matrix2x2 class and <> operation anyway, you can save a little space
154.
by olooney 7y ago
I'm a little tired of "X is a fallacy." Everything is a fallacy, or nearly so. Almost every method by which we naturally and intuitively reason have been shown to be error prone, deeply biased, or at best an approximate heuri
155.
by olooney 7y ago
More information about S2[1]: [1]: http://www.solstation.com/x-objects/s2.htm It's really quite a spectacular object: a star in a highly eccentric object, whipping past at the black hole at over 1% the speed of li
156.
Star Orbiting Black Hole Just Confirmed a Prediction Made by General Relativity(sciencealert.com)
6 points by olooney 7y ago|1 comments
157.
by olooney 7y ago
Other sciences are also "messy" but that hasn't stalled progress. It may be objectively quite difficult to conduct psychology experiments, it's hard to believe that it's any harder to do psychology experiments tha
158.
by olooney 7y ago
Right. These results could equally well be interpreted as caffeine have the same effect on both convergent and divergent thinking, but divergent thinking (renamed "creativity" in the title) is harder to measure because it has more
159.
by olooney 7y ago
Beholding the Big Bang, 2009, by Arthur Ganson A series of 12 pairs of reduction gears, each at a 50:1 ratio. On the left, a motor spins at a high rpm; on the right, the drive shaft is embedded into a concrete block. It will be 13.7 billion
160.
by olooney 7y ago
They exist, they're just not really state-of-the-art. Apache MADLib[1] for PostgreSQL and Greenplum. Everything is done inside of SQL; for example, to fit a linear regression model, you execute the query "SELECT madlib.linregr_tra
161.
by olooney 7y ago
I always thought this was a failed assassination attempt: "Now, now, your highness, don't dwell on the fact that your mental illness has become a major liability to the nobility and just have fun tonight! And by "fun", I
162.
by olooney 7y ago
More to the point, what even is "cultural value?" After Googling it, I found that it doesn't even seem to be a well defined phrase, much less a quantifiable concept. Wikipedia uses notability[1] to decide which articles to in
163.
by olooney 7y ago
Humans are capable of driving cars safely. Many people go their whole lives without ever being at fault for a single accident. Some drivers, especially professionals, practice defensive driving at avoid or preempt accidents where they would
164.
by olooney 7y ago
For a stack oriented language, postfix is execution order. Consider the program "2 3 +". This is really three instructions: 1. Push the literal 2 onto the stack 2. Push the literal 3 onto the stack 3. Execute the Plus Operation
165.
by olooney 7y ago
Book travel and accommodations and track expense reports, with a focus on approval and compliance.
166.
by olooney 7y ago
Just for context, Andrew Gelman is one of the creators of Stan[1], one of the most popular probabilistic programming platforms for Bayesian interference. He has written a popular textbook on Bayesian methods, Bayesian Data Analysis [2]. Ev
167.
by olooney 7y ago
Perhaps base 10 is the problem. In base 2, you can learn the "multiplication table" in 10 seconds (0 X n=0, 1 X n=n, we're done.) The long multiplication algorithm for n and m is just multiply by n by the least significant bi
168.
by olooney 7y ago
> So while this looks like a great resource - Who's it for? Undergraduates, or graduate students who didn't happen to take the right prerequisites. Most STEM degrees require vector calculus, but few require matrix calculus. A p
169.
by olooney 7y ago
I am very impressed with the clarity of presentation here. I usually link to The Matrix Cookbook[1] when I need to cite a reference for matrix calculus theorems but I might reference this instead in the future. I particularly like the secti
170.
by olooney 7y ago
Did you mean, "adheres so closely to software orthodoxy ?" I only ask because it's hard to see how one could "adhere" to heterodoxy and your use of the word "but" suggests you're setting up a contra
171.
ML from Scratch, Part 5: Gaussian Mixture Models(oranlooney.com)
2 points by olooney 7y ago|0 comments
172.
by olooney 7y ago
This is better than not breaking it down, but it's still not very good. McConnell advocates this approach strongly in his book on software estimation[1], and I've seen it work to some extent. It works for reasonably repeatable p
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ML from Scratch, Part 3: Backpropagation(oranlooney.com)
2 points by olooney 7y ago|0 comments
174.
ML from Scratch, Part 2: Logistic Regression (2018)(oranlooney.com)
170 points by olooney 7y ago|4 comments
175.
by olooney 7y ago
It's worse than that: > Ronald W. Dworkin is a physician AND political scientist. (emphasis mine.) He's also written an essay entitled "Where Science Ends and Religion Begins" and a self-published book called "
176.
by olooney 7y ago
Yes, using chain rule for the gradient of norm(Ax-b)^2 makes that derivation a lot shorter. Or just citing a theorem for the gradient of the L2 norm would have been fine. I used the FOIL approach because each of the 4 terms can be tackled u
177.
ML From Scratch, Part 1: Linear Regression(oranlooney.com)
301 points by olooney 7y ago|38 comments
178.
Voodoo Fusion Energy(aps.org)
1 points by olooney 7y ago|0 comments
179.
by olooney 7y ago
The submitted link goes to a brief review of a recently published collection of essays; however, there's a table of contents and an abstract for each essay in the book itself available here[1]. I picked up Sissela Bok's book Lyin
180.
by olooney 7y ago
Yes. They're not testing your knowledge of etiquette, people skills, or friendliness though. They're looking for a more basic and far more widely applicable skill: following best practices. If you were configuring Apache for the f

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