pash

27 ms·

151.
by pash 11y ago
To add to the other responses at this level, I want to point out that one form of vector-vector "multiplication"—inner products—corresponds to applying linear functionals, i.e., to linearly mapping a vector space into its underlyi
152.
Remembering When Driverless Elevators Drew Skepticism(npr.org)
1 points by pash 11y ago|0 comments
153.
by pash 11y ago
Yes, it's very good for a pop-science book.
154.
by pash 11y ago
This sort of thing exists and is apparently what other commenters also have in mind, but I would argue that in your example the measuring device's output is a natural number n in the range [0, 300] and that its interpretation as a f
155.
by pash 11y ago
> ... outputting an irrational number as a measurement does not* imply that it's able to output any member of the complement of the rationals in the reals.* It's my fault, I'm sure, but you have missed the point entirely
156.
by pash 11y ago
Interestingly, these charges are published on the same day that the first decentralized Bitcoin exchange opens its public beta [0]. And, yes, the whole point of a decentralized Bitcoin exchange is to circumvent the laws that the FBI accuses
157.
by pash 11y ago
> If you're going to be pedantic, do it right. Let's do it. > The true sinuosity of any given river is almost certainly irrational as well, since irrational numbers vastly outnumber rational ones in a very relevant sense:
158.
by pash 11y ago
NASDAQ is indeed using Bitcoin's blockchain, via a colored-coins implementation called the Open Assets Protocol [0]. If you have a good reason to use a public, decentralized, open-access, append-only ledger, then you very probably want
159.
by pash 11y ago
This is why NASDAQ and other trading venues are exploring the possibility of using Bitcoin's blockchain to disintermediate the clearing process. The idea is to use asset-tracking protocols (commonly called "colored coins" in
160.
by pash 11y ago
If you see the phrase positive externality and think to yourself, "Oh, that's good!"—then I hope I can help you see things differently. Externalities, both positive and negative, mean that somebody other than the owner of a
161.
by pash 11y ago
Yes, applicative code is a relatively new development in Haskell: applicative functors were discovered only in 2008.
162.
by pash 11y ago
Fashion? Haskell's core abstractions are not design patterns du jour. They're math. They're not going away. The fashionistas are the programmers who want to pick up a bit of Haskell to impress their colleagues but don't
163.
by pash 11y ago
It's somewhat debatable whether the refactor is an improvement, but there is at least one good argument that it is, and (in my opinion) only a much poorer argument that it makes things less clear. If the applicative code is better, it&
164.
by pash 11y ago
There are also a great many aphorisms and witticisms whose attribution seems to gravitate towards an especially well known and respected eminence, although actually said by someone lesser known. One example, widely misattributed to Leonardo
165.
by pash 11y ago
Iceland's situation was nothing like Greece's. Iceland's government defied international pressure to nationalize the debts of its three big, private banks. The banks defaulted, but there was no sovereign default.
166.
by pash 11y ago
Is the +VISA keyword meant to indicate that the hiring company will aid candidates in obtaining a visa, or that the candidate must already have the right to work locally?
167.
by pash 11y ago
I'm not sure. His statement that all clients must be bug-for-bug compatible with Bitcoin Core is simply false. There is a big chunk of behavior that can differ from client to client without the network fragmenting and without bad conse
168.
by pash 11y ago
This is why the Bitcoin Core developers have been trying to factor out all of the code that affects consensus into a separate library. I think it's likely that this library, libbitcoinconsensus, will be at the core of most clients in f
169.
by pash 11y ago
Many of the big web-wallet providers, exchanges, and other custodians insure their customers' Bitcoin holdings against theft. Their insurers include Aon (who insure Coinbase), Lloyd's (Elliptic), Marsh (Circle), and XL Catlin (Bit
170.
by pash 11y ago
And in case you were wondering, GitHub does render notebooks using other language kernels. For example, here's a notebook in Haskell: https://github.com/gibiansky/IHaskell/blob/master/notebooks/
171.
by pash 11y ago
Econophysics enjoyed a brief vogue in the late 1990s and early 2000s, but the field has mostly dried up. Much of what the econophysicsts "learned" turned out either to restate things economists already knew (this time in physics-s
172.
by pash 11y ago
Gavin Andresen, Wladimir van der Laan, and Cory Fields are the three principal developers of Bitcoin Core, the network's reference client. They were previously employed by the Bitcoin Foundation. Brian Forde, the director of the Media
173.
Bitcoin Core Developers Join MIT's Media Lab(gavintech.blogspot.com)
3 points by pash 11y ago|1 comments
174.
by pash 11y ago
Minority games, not Minority Report the movie. :P In game theory, minority games [0] are a class of games that includes the El Farol Bar problem, a class in which the payoffs depend on the number of actors who make each choice. For the most
175.
by pash 11y ago
Very nice! You've taken a big step towards blowing up the assumptions behind the canonical version [0] of the minority game. I imagine you're already thinking about how you can enrich your dataset and provide analysis that will he
176.
The $5B race to build a better battery(bloomberg.com)
3 points by pash 11y ago|0 comments
177.
by pash 12y ago
Good catch that the additive constant is approximately equal to 52 * ln(86) . I like your model. It makes sense, it's simpler, and most importantly it's different enough from mine that it gives us a decent way to test which mod
178.
by pash 12y ago
There is probably something to this model. Notice first that the constants are suggestive. There are 52 working weeks in the year, and a slightly more than 250 working days, and the author finds a good fit for sick_days = -52 * log(x)
179.
by pash 12y ago
> So at least for carbon footprints, those don't necessarily seem to be linked to density. Every study I have seen shows the opposite, that carbon footprints are strongly linked to density and urban-suburban divisions. In 2012, fo
180.
Russia and US agree to build new space station, work on joint Mars project(rt.com)
8 points by pash 12y ago|2 comments

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