DaniFong

84 ms·

781.
by DaniFong 18y ago
Root-finding algorithms, or more generally iterative optimization and numerical solution of equations, isn't something to be sneered at. Sure, it's a front end position, but the ability to do this is something I'd want to know if I were int
782.
Writing Physics(lassp.cornell.edu)
58 points by DaniFong 18y ago|7 comments
783.
by DaniFong 18y ago
I think in some sense that Blanton is advocating an intellectually lazy kind of radical honesty. It's not communicating to excrete whatever verbalizations come to mind because there is no one thing on your mind. You are forced to censor, or
784.
by DaniFong 18y ago
How far beneath the Kelly criterion depends on the game. In gambling scenarios you can estimate the risk relatively easily. In investment scenarios, it's much harder, so there's an additional 'risk model uncertainty,' representing whether y
785.
by DaniFong 18y ago
While one can fold this type of difficulty into expected utility theory, this is not (apparently) true of all situations. People still overweight loss, overweight certainty, and overweight extremely low probabilities. The classic paper by D
786.
by DaniFong 18y ago
Most electric cars, hooked to even a coal fired power plant, have a substantially smaller carbon footprint than the best conventional vehicles. c.f. http://www.stanford.edu/group/greendorm/participate/cee124/T...
787.
Sailing into the Wind, or Faster than the Wind(terrytao.wordpress.com)
25 points by DaniFong 18y ago|13 comments
788.
by DaniFong 18y ago
Al Gore has nothing to do with my reasoning process. http://www.sciencedaily.com/releases/2007/11/071119122043.ht... These are the risks mentioned in the IPCC Synthesis report. The seem sound and reasonable. * The report says that a
789.
by DaniFong 18y ago
In business, war, governance, love, and the climate, people are forced to make decisions based on sorely incomplete data because time is of the essence, and it is all they're ever going to get. If likely exaggeration is to be called out, so
790.
by DaniFong 18y ago
Latency and bandwidth are fundamentally distinct. In particular, if all the players in a game are on the same OnLive server, then there's no synchronization issue between systems as there usually is, only a latency issue from the renderer t
791.
by DaniFong 18y ago
It might have been predetermined, but there's still an act of choosing, a weighing of possibilities, a judgment between them, and action. And those judging them later will too be able to judge their judgment, their character, and make decis
792.
by DaniFong 18y ago
"I feel a deeper understanding of the theorem shows rather that it constrains what hidden variables could exist and that the conventional understanding is impossible, not that hidden variables in all senses are completely impossible." That
793.
by DaniFong 18y ago
Wow. Triple alpha tracks are a discovery. My first thought is that they might have some unusual radioactivity in their sample or lab, so a replication of this experiment is (obviously) in order. One wonders why they haven't measured the neu
794.
by DaniFong 18y ago
What's the experiment? Does anyone have a link to the paper?
795.
by DaniFong 18y ago
TopCoder uses fundamentally automated grading for its contests, and people learn much about programming through it -- the teaching happens from human to human, but the presence of an immobile, unthinking obstacle to overcome doesn't at all
796.
by DaniFong 18y ago
To make quick regenerative braking efficient, you need something other than batteries to store the energy -- they can't absorb that much power so quickly. They're working on ultracapacitors, which seem like an expensive solution to me. Our
797.
by DaniFong 18y ago
My calculations ( http://daniellefong.com/2008/11/15/tick-tock/ ) give about 4 kwhr per 100 miles of city driving without regenerative breaking at about a 70% efficiency. Most of the US ranges between 2 to 4 kwhr a day of impinging sunlight
798.
by DaniFong 18y ago
Time for a more studied response eludes me. But I should first like to say a few things. Firstly, though I am not an author of that statistical study, I have seen nothing to contradict those numbers. The proportion could be as high as one i
799.
by DaniFong 18y ago
I'm not confusing the two. Part of my point was sexual abuse can escalate into more serous abductions. By acting as a deterrent, it may have an effect far greater than the 27 children saved would imply. As evidence in countries without such
800.
by DaniFong 18y ago
You're comparing the magnitude of success for amber alerts - a solution to a problem, to the magnitude of problems themselves. It's not mere callousness, it's poor analysis. Whether you want to think about it or not, child sexual abuse is n
801.
by DaniFong 18y ago
It's a strength of the scientific method that one can offer a hypothesis without believing it. In any case, there are additional cognitive tests which one can use to examine the actual behavior from a different angle.
802.
by DaniFong 18y ago
As a first guess, which the researchers themselves offer, the marker of internet savvy that they found was the frontal lobe processing, which is roughly that used in decision making, synthesis, and discrimination, is invoked. In other words
803.
by DaniFong 18y ago
How is this study using fMRI as a scalpel? I think the resolution is more than good enough to isolate activity in decision areas of the brain, which is exactly what they're doing.
804.
Is Google Rewiring Our Brains? Yes. fMRI studies of websearch in the Internet savvy.(searchengineland.com)
16 points by DaniFong 18y ago|11 comments
805.
by DaniFong 18y ago
I realize that this is hardly traditional HN fair, but watching amazed me. I had no idea that bubble rings could exist, or that dolphins would play with them like this.
806.
Dolphins blowing bubble rings, and playing with them [video](metacafe.com)
44 points by DaniFong 18y ago|14 comments
807.
by DaniFong 18y ago
It seems to work this way in the gmail spam filter too, but I didn't want to tell anyone for fear of it being exploited. Apparently the cat's out of the bag, however.
808.
by DaniFong 18y ago
The mystery is how it can be so confusing, and how measurement and entanglement can be so mysterious, while at the same time, it can be so accurate a predictive theory. Any time you use a laser, as in an optical drive you rely upon a quantu
809.
by DaniFong 18y ago
The paper is accessible at http://arxiv.org/abs/0811.1625
810.
by DaniFong 18y ago
It seems to me like a cross between Wikipedia with curated data, Mathematica, and Google Calculator. You can ask it a wide variety of things, in natural language, and it is supposed to get the answer right fairly often. We'll see.

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