obastani

22 ms·

151.
by obastani 10y ago
I don't think that's as surprising/chilling as people make it out to be. Let's say I run a compression algorithm (e.g., Huffman coding) on a billion strings, and a very common substring is "hello, world". I w
152.
by obastani 10y ago
RL can in principle recover necessary subsystems, but you can't tell if that has actually happened. A human designed system may not be as comprehensive asymptotically as a learned system, but the designer can ensure that critical porti
153.
by obastani 10y ago
I might be misunderstanding the article you linked, but it seems very misleading to me (though I agree with the conclusion that the ProPublica article is misleading). They claim to conclude: "The predictor is probably not biased agains
154.
by obastani 10y ago
It's not just philosophical -- there are examples of practical situations where there is a true model (especially in more traditional applications of statistics): - Polling for presidential election: The "true model" is the v
155.
by obastani 10y ago
> So I guess if you're comfortable with modular arithmetic, you can fairly consider this an obvious proof. It relies on another result about primes, but it's very common that one result makes another result easy, and a blanket
156.
by obastani 11y ago
This is based on my limited physics education, but I believe there are two things at play: 1) Velocity doesn't affect time, acceleration does. So if your twin flies to Mars and back, you age more quickly. But if your twin flies to Mars
157.
by obastani 11y ago
Couldn't this be a result of the massively increased amount of conflict in the region since Bush's second term?
158.
by obastani 11y ago
Actually, it is a problem strictly for the massless :)
159.
by obastani 11y ago
It seems to me that the original proof also uses "consecutive numbers are coprime" as the sole property. In particular, it looks at P = p_1 * ... * p_n and says that it is coprime to Q = P + 1; hence, there must exist another prim
160.
by obastani 11y ago
I think the point is you can easily remove the "deficiencies" of Euclid's proof. Basically, say: let p_1, ..., p_n be the first n primes. We can construct a new prime by examining p_1...p_n + 1. This process can be continued
161.
by obastani 11y ago
The proof isn't referring to n, n+1, and n+2 -- it refers to n, n+1, and n(n+1) + 1. In your example, this would be 2, 3, and 2*3 + 1 = 7, which in fact include 3 prime factors.
162.
by obastani 11y ago
Isn't a stack just a "sequence of terminals and/or non-terminals"? (Or as you suggested, an infinite state machine where the states are all possible sequences of terminals and/or non-terminals.)
163.
by obastani 11y ago
I think that statement is referring to simply defining "undefined behavior", not actually determining whether a given program has undefined behavior.
164.
by obastani 11y ago
I think there are a few additional important details. It's not so much that they stack a random forest on top of a neural network, as that they are trying to train neural networks that have tree-like properties. Deep neural networks ca
165.
by obastani 11y ago
Not really, it's not hard to write a compiler to convert between different programming languages. The challenge is translating between the different semantics of different programming languages (e.g., object-oriented vs. functional, dy
166.
by obastani 11y ago
I don't think many serious deep learning researchers claim that it will solve any kind of problems. Instead, it allows us to make significant strides in areas that have been stagnant for many years now (e.g., image recognition, speec
167.
by obastani 11y ago
I'm not saying that each college you attend has no effect on earning power. It's just that I can perfectly predict the effect of each college on your earning power. Does that make sense? If I have an oracle that tells you "if
168.
by obastani 11y ago
That's my point -- who decides what expectations are? Their results are incredibly dependent on the model specification. I imagine if they changed which indicators they used, the results would vary widely. Here's another way to
169.
by obastani 11y ago
This analysis doesn't make any sense to me. Even by their own intent (i.e., best added value based on salary), their methodology is nonsensical. For example: Why should CalTech get hurt for being near L.A.? They're basically argui
170.
by obastani 11y ago
I don't know about about your city, but I would expect drivers to stop for pedestrians even if they are crossing in the middle of the road. The reason I never cross in front of a moving car is a matter of courtesy and not wanting to br
171.
by obastani 11y ago
What if there was a way to give only the US government access to the data? For example, somehow have a shared encryption scheme where the user holds a decryption key to decrypt her data, but the government and the company can somehow use th
172.
by obastani 11y ago
Yes, I was referring to the verified parts. To the best of my knowledge, these are bug free -- I believe the bugs were found in an unverified portion of the front-end (which I think was subsequently verified). I think the technique works in
173.
by obastani 11y ago
I don't think that's a fair analogy. At this point, I believe we have pretty good ideas that make it possible to write correct software. Most impressively, there has been progress on creating a completely verified C compiler nam
174.
by obastani 11y ago
One potential issue is data -- Google can leverage its huge number of historical searches to improve search for everyone. I doubt this is a huge issue for players such as Microsoft, but it probably poses difficulties for a small start-up.
175.
by obastani 11y ago
The design is very much intentional. A huge barrier to adoption for self driving cars is perception of safety; Google wanted a car that looks safe not dangerous.
176.
by obastani 11y ago
The claim made by the article isn't that getting < 8 hours of sleep is bad (they agree it is), it's that most people get 8 hours of sleep; more specifically, that many surveys overestimate the number of people who get too littl
177.
by obastani 11y ago
It's fine if you run a separate experiment to justify the hypothesis. If you choose the hypothesis after conducting the experiment, then the p-values you obtain for that hypothesis are invalid.
178.
by obastani 11y ago
I think there's a big difference between working quickly and working rushing a project. Doing things thoroughly and correctly is of course well worth it; you can complete this work as efficiently as possible without cutting corners and
179.
by obastani 11y ago
My understanding is that deep learning has the largest benefit with perceptual data (e.g., images, speech, and to a lesser extent natural language and control). The driving force behind deep learning is the ability to "compress" d
180.
by obastani 11y ago
Does that apply after the options have been exercised? Can you have a contract saying that you'll share part of the payout from exercising the options?

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