dxbydt

34 ms·

331.
by dxbydt 7y ago
It’s awesome to see more & more devs getting interested in math & stats as machine learning, optimization & sequential testing (what you folks call a/b test) becomes more mainstream. The obvious benefits are, much of math
332.
Endopil(theengineer.co.uk)
1 points by dxbydt 7y ago|0 comments
333.
by dxbydt 8y ago
>Correlation does not imply causation. i think we should stop trotting out this tired nugget without understanding how sparse the alternative is. Even within the academic stats community, there’s a fair amount of handwringing that rho is
334.
Confidence Intervals, Credible Intervals(reddit.com)
2 points by dxbydt 8y ago|0 comments
335.
by dxbydt 8y ago
Even if the DS gets close to the money, the massive assumption here is that the underlying money making process is amenable to statistics methodology. The surprise & disappointment is that it mostly isn't. The underlying embedded M
336.
by dxbydt 8y ago
Learn more ? I'm actively trying to unlearn a bunch of languages at this point! ofcourse, when I was a wageslave in the bay area, its nice to know python, java, javascript, scala etc. - got me jobs every 2-3 years & put food on tab
337.
by dxbydt 8y ago
> “If you want to own a house, have paid-for cars, put your kid through school, put away savings, and otherwise be completely comfortable then you can do just fine.” lol wut ? if you work in a typical SF startup, you can do precisely non
338.
Age of Quants Coming to an End(news.efinancialcareers.com)
2 points by dxbydt 8y ago|1 comments
339.
by dxbydt 8y ago
Well I know for a fact that Ann Coulter is on very good terms with several HuffPo dems, yet they appear bitter rivals on tv. Its definitely plausible Taleb, Silver & Pinker are drinking buddies who hatched up this elaborate charade to h
340.
What is 3/4 plus 1/4?(mobile.twitter.com)
1 points by dxbydt 8y ago|0 comments
341.
by dxbydt 8y ago
> you could have been getting paid a lot more in that time I'm sure you are familiar with the concept of fuckyou money. Its a different number for different people. Say that number is 5. I will give you many examples below. Every
342.
by dxbydt 8y ago
6 years ago, when HN was way more relaxed & laidback, someone posted my story about monoids. It stayed on the HN front page for like a whole day !!! (which these days is next to impossible) Anyways, here’s that monoid parable - https:&
343.
by dxbydt 8y ago
Speaking as a Stat TA, literally over 90% of the students taking the class will conduct 1 experiment, not 100, which gives you 1 CI, not 100, & then say that particular CI has a 95% chance of containing the population mean! Then when I
344.
by dxbydt 8y ago
To see how absurd that definition is, think about this - CI itself is random! So if you conduct a 100 experiments, you'll get a 100 (non-overlapping) CI's! So in which of those 100 CI's does the "true population mean&quo
345.
by dxbydt 8y ago
Not saying um & ah allows you to feign complete ignorance. These days that’s a huge bonus. Especially in academia,I’m finding its best to pretend to be a complete fool than to say um & expose your cards. If you say um people respond
346.
by dxbydt 8y ago
you can change the direction, -1 is a scalar. but yeah, you are right about the rest. cheers!
347.
by dxbydt 8y ago
you are right.
348.
by dxbydt 8y ago
if you don’t give me basis how’ll i span the space ?
349.
by dxbydt 8y ago
yeah i took abstract algebra before real analysis. we did hit rings & fields in algebra but by that time it was finals week & they got minimal coverage. we used Herstein, that’s the order in that book.
350.
by dxbydt 8y ago
This isn’t quite right. When I personally learnt these things in an undergrad program in math in the US, we learnt monoids. Then we learnt semigroups. Then groups. Then abelian groups. Then vector spaces. Then on the midterm we got question
351.
by dxbydt 8y ago
you need closure on scalar mult. if (2,3,4) is a valid int triple & 1/3 is your scalar then (2/3,1,4/3) throws you out of the group so there goes your closure. unlike op, you don’t really need to know about fields to sol
352.
Computers can solve your problem. you may not like the answer(apps.bostonglobe.com)
2 points by dxbydt 8y ago|0 comments
353.
by dxbydt 8y ago
> 19th and 20th century engineering is amazing. Today, if I can't conceive of writing it as a mobile app than I just shrug. Skills thrive only if there is an incentive, monetary or otherwise, to practice them. Otherwise they atrophy
354.
by dxbydt 8y ago
I don’t hate R as much as I hate universities insisting on mandatory use of R for all comp-stat courses. This to my mind verges on civil rights infringements. Bear in mind we aren’t talking about a private institution such as a company, whe
355.
by dxbydt 8y ago
wonder why the market isn’t pricing in the FB misery.look at 3 month on FB. back in march it was on ~190, then the cambridge shit dragged it straight down to ~150, now 3 months later we are back to ~190, exactly where we left off.
356.
Deep Learning to Predict Asset Returns(arxiv.org)
1 points by dxbydt 9y ago|0 comments
357.
by dxbydt 9y ago
Here are some harder examples- abs(x) + abs(y) = 1 is a square of side 1. x^2 + y^2 = 1 is a circle of radius 1. But abs(x) = positive sqrt(x^2) so squares and circles ought to have the same 2D parent, since given the x & y, its just a
358.
by dxbydt 9y ago
> But I disagree that it's an essential property of the platform. Jack: "We have witnessed abuse, harassment, troll armies, manipulation through bots and human-coordination, misinformation campaigns, and increasingly divisive e
359.
by dxbydt 9y ago
what a naive worldview! it is most definitely their fault. i worked there. there are giant televisions showing surging click counts and impressions. this translates to revenue almost linearly. matter of fact anything you did that had a nega
360.
Skin in the game(amp.theguardian.com)
1 points by dxbydt 9y ago|0 comments

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