stdbrouw

82 ms·

721.
by stdbrouw 11y ago
> But out in the wider public, there seems to be a perception that chips will get "twice as good" every year into perpetuity. I'd think people in the wider public have no clue as to exactly how much faster computers get ev
722.
by stdbrouw 11y ago
Well, technically we do know what's in the black box of course, it's just that for many methods it's not easy to summarize because there's so much happening under the hood. Leo Breiman (who invented random forests) gives
723.
by stdbrouw 11y ago
For linear algebra, I like the "No BS guide to linear algebra" ( https://gumroad.com/l/noBSLA ) which also includes a high school math refresher for people who need it (I did). For probability, "Probabilit
724.
by stdbrouw 11y ago
Conditional expectations are an important part of regression and in other scenarios where you might want to adjust a parameter estimate ("for every unit increase in x we get this much of a difference in y") for confounders. Genera
725.
by stdbrouw 11y ago
> Do you see how your argument breaks down when you can substitute any potentially-addictive activity in place of [gambling]? Ehm, well, yes, and governments ban or discourage destructive and addictive activities all the time. Also, figh
726.
by stdbrouw 11y ago
What do you mean by testing for dependent variables?
727.
by stdbrouw 11y ago
Sounds like you've also spent years molding professional disdain for everyone who's not a Real Scientist.
728.
by stdbrouw 11y ago
Definitely agree that those long lists that tell you to first become awesome at combinatorics, linear algebra, then learn all about statistical inference (that is, not actual statistical procedures but the mathematical underpinnings of stat
729.
by stdbrouw 11y ago
> Kahneman hypothesis implies that such teachers reward students only when their level of achievement is higher than it has ever been in the past and punish them whenever their achievement is below their highest level of achievement. Not
730.
by stdbrouw 11y ago
Daniel Kahneman (from his autobiography, but he tells the same story in Thinking, Fast And Slow): > I had the most satisfying Eureka experience of my career while attempting to teach flight instructors that praise is more effective than
731.
by stdbrouw 11y ago
"the most full-featured and mature tool in this field!", "With Immutables you can generate state of the art immutable object and builder." A programming library with copy that looks like it's written by a marketeer
732.
by stdbrouw 11y ago
Ah yes, true. Let's call it a bias/variance tradeoff ;-)
733.
by stdbrouw 11y ago
I'd prefer to just treat scores as continuous and correct using `t_ppf(.975, n-1)` instead of the normal approximation (1.96) but I suppose working from a multinomial distribution would give pretty similar results.
734.
by stdbrouw 11y ago
Inappropriate for obtaining unbiased confidence intervals, yes, but this doesn't matter for ranking if bias is uniform across everything that's being rated. You make a good point that there might be differential bias depending on
735.
by stdbrouw 11y ago
This gives an advantage to new posts for which the probability is much more uncertain: it's easier to get 1 upvote and 0 downvotes (rank 2/3) than to get 1999 upvotes and 999 downvotes (also rank 2/3). Maybe that's what
736.
by stdbrouw 11y ago
YMMV, but I'd rather use an elementary and mathematically sound statistical technique than macguyvering something myself. (Though I do understand that, as some people describe in this thread, there can be different purposes to ratings
737.
by stdbrouw 11y ago
Also discussed in Cameron Davidson-Pilon's Bayesian methods for Hackers in the context of Reddit ups/downs: http://nbviewer.ipython.org/github/CamDavidsonPilon/Probabil... For Amazon, though, which is th
738.
by stdbrouw 11y ago
> an era of controlled experiments with minimal data This world hasn't disappeared, y'know. Many of the specialized packages on CRAN deal with things like missing data, removing selection bias from longitudinal studies and dist
739.
by stdbrouw 11y ago
Doesn't help when the issue is benefit to society rather than personal benefit.
740.
by stdbrouw 11y ago
Life is a balancing act. People who worry about their legacy are usually not the nicest people to be around because they don't have time for other people, and they usually don't really end up making an impact either. Mind you, I&#
741.
by stdbrouw 11y ago
Meh. I think we'd all be better off if we did what was good for us and for people in our environment, rather than trying to save the world.
742.
by stdbrouw 11y ago
I have to second this. Both etcd 0.4.x and etcd 2 can get seriously wonky. Part of it is definitely that it's a lowish-level tool (as is fleet) and so it's up to you to make sure that you've got everything configured as it sh
743.
by stdbrouw 11y ago
On the other hand there's http://www.nejm.org/doi/full/10.1056/NEJM200105243442106 , a meta-analysis which shows that while placebos might make people feel better, you don't actually get better – whi
744.
by stdbrouw 11y ago
When talking about deviation, you're describing the spread of a distribution. It's perfectly fine to describe your data using mean (or median) average deviation, but then fit a model on top of that minimizes the sum of squared err
745.
by stdbrouw 11y ago
Well, no, there are a couple of intervals that don't include 0 and those are the ones they report. Other than that, this does look like a pretty poor study. They do that classic (but misguided) thing where they say that their study was
746.
by stdbrouw 11y ago
Most of these kinds of simulations aren't expert systems but microsimulations (cf. http://en.wikipedia.org/wiki/Microsimulation ) and they are actually used quite a lot for certain kinds of problems, like figuring
747.
by stdbrouw 11y ago
But you can manually trigger a build when automated builds are enabled, for rare cases when the automated trigger didn't do what you wanted. Works really well in practice.
748.
by stdbrouw 11y ago
Even if true, a bimodal distribution of suckers and winners is very different from having to meet a treshold in certain skills to be able to code at all. Not everybody can become an architect or a mechanical engineer either, but I never hea
749.
by stdbrouw 11y ago
Don't underestimate by how much the speed at which you learn increases as you get older. There's lots of amazing musicians around who only started playing as adults, for example, because aside from a couple of kid geniuses, learni
750.
by stdbrouw 12y ago
"Because it's popular" is a great way to pick your plumbing, though. The opposite is the awesome developer who is so religious about all the tools and languages that he uses that nobody wants to work with them.

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