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KonaB

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crypto.stanford.edu 16y ago

Zero-Suppressed Binary Decision Diagrams (ZDDs)

KonaB
26pts2
www.wired.com 16y ago

Hacking the Mother Code (1995)

KonaB
4pts0
blog.blprnt.com 16y ago

Getting Started with Processing and Data Visualization

KonaB
6pts0
www.xtranormal.com 16y ago

Xtranormal - Text-to-Movie

KonaB
2pts0
www.wired.com 16y ago

The New Diamond Age (2003)

KonaB
1pts1
opinionator.blogs.nytimes.com 16y ago

Strogatz on the elements of mathematics, from pre-school to grad school

KonaB
2pts0
www.codeproject.com 16y ago

Neural Networks on C#

KonaB
2pts0
www.johndcook.com 16y ago

Don’t invert that matrix

KonaB
90pts38
okmij.org 16y ago

Subtyping, Subclassing, and Trouble with OOP

KonaB
3pts0
www-users.cs.york.ac.uk 16y ago

Algorithms for Graphical Models [pdf] (free ebook)

KonaB
3pts0
www.loria.fr 16y ago

Modern Computer Arithmetic (free ebook)

KonaB
2pts0
www.forbes.com 16y ago

The Smartest Unknown Indian Entrepreneur (2008)

KonaB
39pts8
xorshammer.com 16y ago

A Suite of Logic Programs

KonaB
3pts0
www.youtube.com 16y ago

The Secret Life of Chaos (BBC documentary)

KonaB
35pts5
mathoverflow.net 16y ago

What programming languages do mathematicians use?

KonaB
16pts24
www.bionet.ee.columbia.edu 16y ago

Methods of Information Theory in Computational Neuroscience

KonaB
1pts0
www.ifp.illinois.edu 16y ago

An Exploration of Random Processes for Engineers [pdf] (free ebook)

KonaB
1pts0
ee.stanford.edu 16y ago

Entropy and Information Theory (free ebook)

KonaB
2pts0
www.ece.rice.edu 16y ago

Dialogue concerning Neural Coding and Information Theory (2003) [pdf]

KonaB
1pts0
www.princeton.edu 16y ago

Models and Modeling: from the Armillary Sphere to the Computer

KonaB
1pts0

Not quite. Populist and pavlovian attacks are baseless. But intelligent ones are not. Personally, I not only distrust the SEC, but I also believe that "should" is a word to be left out of the discussion. What matters is what can be implemented, not what is morally right. It's like realpolitik applied to the context of Wall Street.

Thanks for the intelligent comment. Finally!

I am not against intelligent critique of GS, the government, whatever. In fact, such critique is required to ensure the proper functioning of the system, closing the feedback loop and providing the required checks. What I am against is Pavlovian unintelligent critique, and one sees a lot of that when the topic is Wall Street. And even though a lot of HN'ers are deeply knowledgeable about Finance, the majority is clearly clueless. This is HN, after all, not NucPhyn.

I am no GS'er, nor am I their useful idiot. They are merely maximizing their utility through whatever means necessary. The one difference between me and you guys is that I don't claim that I am a saint who would be uncapable of doing what GS is doing if I were on their shoes. It's easy to be full of virtue when one does not have the chance to do any evil. Business is hard, but the players in the financial market are voluntary participants. If GS has an information edge and rapes everyone else on a regular basis, maybe the prey should leave the market. It's a winner-take-all scenario, whether we like it or not.

Change the regulation, they will find a new way of gaming the system. Increase taxes, and they will find a loophole. The only way of taming these hyper-motivated people is by eliminating all economic freedom, and I oppose that on ideological grounds. So, I am happier to have a market where GS pillages their counterparties than to have the alternative scenarios. No one said that the best of all worlds was ever attainable. It sucks. One could try to change human nature, but we all know how that worked in the past...

[dead] 16 years ago

If you were going to burn $60, you could instead have gotten a 50 euro BJ in the Red Light District and then had an Heineken with your buddies. You probably would have sweeter memories of Amsterdam...

"This doesn't make sense to me. If sugar in soda leads to cancer, then why doesn't sugar in juice?"

Maybe because there are various types of sugars (e.g., glucose and fructose), and these are metabolized differently? That could explain it. Just speculating...

I suppose the article is referring to the SOSTOOLS (where SOS = Sum of Squares) free MATLAB toolbox:

http://www.cds.caltech.edu/sostools

http://www.mit.edu/~parrilo/sostools

The article could have mentioned that more people have worked on this. The whole thing started while Parrilo and Prajna were Prof. John Doyle's grad students at Caltech / CDS. Yet once again, MIT's shameless self-promotion fails to give credit where credit is due...

Yet another article blaming the poor quants. Anyone with nonzero experience in finance knows that quants have no power and earn no respect. Of course quants know that models have limitations, but if you tell your boss that one should be conservative, the only thing you will attain is to get yourself fired. The ones to be blamed are the ones with decision-making power, and everybody knows that quants have as much decision-making power as the IT guys.

At least they talk about Aaron Brown. In any case, I was expecting more from the WSJ. They used to be better than this...

Interestingly, when Markowitz invested his own money, he invested 50% in stocks, and 50% in bonds. If the creator did not believe in his own creation, I don't think anyone should. BTW, Engle's work is kind of useless in the real-world...

Having worked at a startup in London, I would claim that Zed's post applies to London, too.

Life is too short to swim against the current. Whoever wants to start a company should go where like-minded people exist in large numbers, and neither NYC or London are such places. Starting a company is already hard, the least one could do is to be immersed in the right culture, where the right values are cherished.

"Finance companies get government bailouts and are more likely to succeed."

You are painting things with a very broad brush. How many hedge funds are there? Thousands. How many of them got bailout funding? Virtually none. How many top tier investment banks are there that got bailed out by the government? 5 or 6? I rest my case...

Besides, Finance is a very vast field. Hence, the words Finance companies means nothing. A hedge fund is, essentially, a startup... and the likelihood of failure is high. By contrast, a bank is anything but a startup. A boutique investment bank and a boutique HFT hedge fund are both "finance companies", but their cultures are more distant from one another than what you can imagine.

You are thinking of GS, MS, City, ML and the like, and generalizing that all finance companies are like that... which is utterly absurd.

"...tell you they have a "tiny" hedge fund already worth 500 million and they can give you a return on your investment within one year, and in 5 they’ll be worth a few hundred BILLION. Oh, and if they fail the Fed will bail them out so there’s no risk."

As far as I know, the Fed did not directly bail out any hedge funds, except those internal to big banks. The last 2 years were a blood bath in the hedge fund world, with hundreds of shops closing down. Zed's text is amusing, but it does not reflect reality all that accurately.

Last but not least, I have never heard of a hedge fund worth hundreds of billions. A 1-billion fund is common, but hundreds of billions? When Jim Simons of RenTec started talking of a 100-billion hedge fund in 2006, everyone was so excited...

Would you care to elaborate on that?

If Dostoevsky, Tolstoy, Pushkin, Kandinsky, Mayakovsky, Markov, Kolmogorov, Gelfand, Arnold, Gromov, Perelman have / had spoiled genes, then I wish such "spoiled genes" were more common in the West.

Shotgun clause 17 years ago

A game-theoretic analysis of the scenario you have described would be quite interesting. Do you have any links on that?

I learned how to write code using VB and MS Excel, simply because that's what I had at the time. If I had not started with those, I would have never found out that I like programming, and I would never have written code under open-source systems.

Yeah, it's BS. It's the old "only people who do X can be in club Y" thing. But your comment would have been taken more seriously if you had backed it up with strong evidence.

Illegal prime 17 years ago

I think one must draw a distinction between the physical world and the metaphysical one. For a platonist, numbers do exist outside of any physical reality and, therefore, a number and its representation are not the same thing.

I am not a mathematician, but to me this discussion reminds me of a vector having different coordinates, depending on what coordinate system we choose. Those are all different representations of the same thing. Likewise, a number can be represented in many different ways (binary, oct, hex, etc), but they all represent the same number. Is the vector its representation? If so, then the vector is many things, which is a funny definition of "to be". If the vector is itself, then it cannot be equal to any of its representations, it's something beyond its representation.

Illegal prime 17 years ago

I think that the main reason you are being downvoted is not so much that you are technically wrong, but rather because you are being pedantic ad nauseum.

This is a programmers' forum, not a philosophers' forum. We should not be discussing the meaning of "is". That's too low-level and fundamental for our purposes. This does not imply it's not an interesting question, it's just not appropriate.

Maybe this is due to the fact that Shannon's work is quite theoretical. Sure, his work had an immense impact, but it's "behind the curtains", so to say. The point I am trying to make is that Coding is an enabling technology, i.e., it serves to enable reliable communication, but it's a means towards an end, not an end in itself. A lot of people think communication is about two antennas and something floating around in the air is transmitted between them, and somehow the receiver is able to guess the message that the transmitter sent. Well, the transmitter can do that because of coding schemes, but that's too technical for most people.

Another field which suffers from the same problem is Controls. It's also an enabling technology in the sense that it allows man-made mechanisms and devices to work as desired. Most people think airplanes fly because they have wings, when in fact they fly because they have controls.