DavidSJ

52 ms·

541.
by DavidSJ 8y ago
Both QM and ML are very heavy in linear algebra. Some might say they’re both glorified (or unglorified?) linear algebra. ;)
542.
by DavidSJ 8y ago
> I learned calculus, and even had to memorize a bunch of proofs for the course. I'm curious about this. Did your class require students to find many of their own proofs of key results, or was it more about regurgitating proofs from
543.
by DavidSJ 8y ago
This sounds like a good strategy for mastering and memorizing a pattern of behavior, which is the demand in most grade school and college math courses. It's nothing like what higher mathematics demands, which is much less about rote me
544.
by DavidSJ 8y ago
Thanks for telling me your approach! For all the examples you gave, I feel like those are the sort of thing that become so familiar in the process of working with those objects (e.g. spending long hours seeking proofs of theorems when I f
545.
by DavidSJ 8y ago
Out of curiosity, what sort of cards do you use for math? For language learning it's obvious -- words, phrases, etc. -- but for math, is it like prompts for proofs of theorems, or what?
546.
by DavidSJ 8y ago
Hebbian learning is the name: https://en.wikipedia.org/wiki/Hebbian_theory
547.
by DavidSJ 8y ago
In that sense, map just composes its two arguments.
548.
by DavidSJ 8y ago
From the article: It is common for developers to disable built-in vehicle features such as automatic braking to avoid multiple systems issuing conflicting commands, said Raj Rajkumar, a Carnegie Mellon University professor who founded and
549.
by DavidSJ 8y ago
It appears this just comes down to inadequate inter-departmental accounting, not necessarily a net loss of any total amount of money, much less $21 trillion. The original source appears to be https://www.forbes.com/sites&#x2
550.
by DavidSJ 8y ago
It’s not perfectly flat, but somewhat close to it, because all of our solar system’s planets formed from the same accretion disk, during which time there was opportunity for exchange of angular momentum.
551.
by DavidSJ 8y ago
The new BART fleet is quieter: https://www.bart.gov/about/projects/cars/faq
552.
by DavidSJ 8y ago
The rapid emergence of single-celled life on Earth is not necessarily evidence that it was an easy step for evolution. See the discussion surrounding “conditional on success, all the hard steps, no matter how hard, take about the same time”
553.
by DavidSJ 8y ago
I think communities already negotiate with developers. But what's good for the local community isn't the same as what's good for the region as a whole. The housing crisis is regional; the benefits from development extend far
554.
by DavidSJ 8y ago
I also came close to pointing that out, and then I noticed that it only makes palindromes of this sequence more probable, rather than guaranteeing them (see my comment on Math SE).
555.
by DavidSJ 8y ago
It's a mistake to look for the single reason someone won an election. There are always many causal factors, all working together, which result in the outcome.
556.
by DavidSJ 9y ago
No problem at all. Have a good day.
557.
by DavidSJ 9y ago
It was a low-quality joke, I agree (most of my jokes are). But I actually was trying to point out that it’s a garden path sentence.
558.
by DavidSJ 9y ago
Big Dairy is being upped by controversial new milk shakes.
559.
by DavidSJ 9y ago
Consider an alternative hypothesis? In your hypnagogic state, your brain actually produced an image based on what she described to you, then reordered the chronology of events so that it seemed to you like you imagined the image before she
560.
by DavidSJ 9y ago
Your neighbours has two children, one of which is a girl. What is the probability of the other child to be a girl? This is oft-mentioned but with this wording it's ambiguous. Here are three possible interpretations: 1. Your n
561.
by DavidSJ 9y ago
I think if other companies want to launch thousands of satellites on SpaceX rockets, then SpaceX shareholders would be okay with that too.
562.
Terence Tao: The Cosmic Distance Ladder(m.youtube.com)
2 points by DavidSJ 9y ago|0 comments
563.
by DavidSJ 9y ago
San Francisco is one beautiful city with one very ugly downtown.
564.
by DavidSJ 9y ago
I think we’re not really disagreeing about anything. In a pure math context, x would be, as you say, a quantity in which dimensions play no role.
565.
by DavidSJ 9y ago
That’s fine as a pure mathematics perspective, but in physics dimensions come into play often, and one often has polynomials whose domain and coefficients come “tagged” with particular dimensions.
566.
by DavidSJ 9y ago
Such a polynomial only makes sense when x is a dimensionless quantity, or alternatively when the coefficients have appropriate dimensions to compensate.
567.
by DavidSJ 9y ago
The writing and grammar on that site is terrible, I’m sorry to do this, but I think you mean that the writing and grammar are terrible, not that they is terrible.
568.
by DavidSJ 9y ago
Sorry, I accidentally looked at the row below 2017’s, which is the average for Berkshire Hathaway’s history.
569.
by DavidSJ 9y ago
I think you mean 1000 bps (10%)?
570.
by DavidSJ 9y ago
It wasn't a lie; they just didn't know the result. There have been multiple cases in the past when contact was temporarily lost after drone ship landing.

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