Link to Wikileaks (works for the moment)

Various wimpy organizations, in the US at least, seem to be dumping web hosting and DNS service for wikileaks. Hosting was apparently moved to Switzerland but wikileaks.ch doesn't work either (no DNS resolution for it either, I guess).

Here's a URL for Wikileaks that works at the moment:

http://213.251.145.96/

I don't have a carefully considered opinion but my gut reaction is that Wikileaks is doing journalism, and its publication of classified material that it obtains is probably protected.  Some of those in government or the military who supply it with classified material seem likely to be guilty of some crime along the lines of mishandling classified information, but probably not espionage though I haven't read the relevant laws.

Some links of relevance:

The Guardian appears to have the most detail on the sex crime allegations against Assange.

A piece in the Atlantic from a pro-Wikileaks point of view.

University of Minnesota University Relations office said to have canceled premiere of environmental documentary on agricultural pollution of the Mississippi

The premiere of a documentary produced by U of Minnesota's Bell Museum of Natural History, on pollution of the Mississippi by agricultural practices, appears to have been canceled by the "University Relations Department." See also this from a U Minn bio professor.  He writes that the Vice President of University Relations is married to the president of a PR firm that represents the Minnesota Agri-Growth council.   I know,  I know, correlation is not causation...  Still, I expect outrage from the local Tea Warm Milk and Kahlua party...

Estimating the happiness equation: Freakonomics blogger Justin Wolfers on the Black/White happiness gap

Unfortunately (or perhaps fortunately) for the humorist in all of us, Justin Wolfers posts to the New York Times' Freakonomics blog, but is not actually an author of the recent Freakonomics sequel, Superfreakonomics.  (If you picked up on my reluctance to appear implicitly favorable toward the Freakonomists in my previous post, it's largely because of what I've read about Chapter 5 of that sequel, on geoengineering and global climate change---see, for example, this.)  Nevertheless, the paper by Wolfers and his Wharton colleague Betsey Stevenson, titled Subjective and objective indicators of racial progress, looks interesting.  A rough summary would be that in the US, black or African-American people's self-reported level of happiness has increased substantially since the mid-1980s.  Although it is still lower, even controlling for other circumstances like average income, than for white Americans, the gap has narrowed.  The overall gap (not controlling for income) has also narrowed, but the narrowing appears not to be due to increases in income, but appears due to other factors;  Wolfers and Stevenson suspect, but have no direct data to indicate this, that it is due to the decrease in racism black people encounter in day to day life.

There's some bad news for some of us in the conclusion to their Section II:

Comparing these various estimates, we find that controlling for measurable differences in the lives of blacks and whites explains about one-third of the black-white happiness gap in the 1970s and much of this is due to the differences in income between blacks and whites. Turning to the trends over time we see that little of the change over time is explained by the controls. In all specifications the black-white happiness gap—measured relative to the standard deviation of happiness—is closing at a rate of about 0.5 per century. However, this relative change is composed of both a decrease in the happiness of whites and an increase in the happiness of blacks; the decrease in the happiness of whites is larger once controls for objective indicators have been taken into account. Finally, while the racial happiness gap remains large, around two-thirds of this can be explained by differences in observable characteristics.

White folks, it seems, have been getting less happy---an effect that is only made more pronounced by controlling for other measurable factors.  Actually, Stevenson and Wolfers (2009) claim that this is mostly due to a decrease in happiness among white women.

Reading the paper is recommended as a look at a simple piece of modern social science research, how it tries to control for potentially confounding effects, and how tricky it is to deduce correlation from causation. (An example of the latter: "one reason that married people report substantially greater happiness in a cross-section is that happy people are more likely than unhappy people to marry (Stevenson and Wolfers 2007)".)

2008 Perrin Reserve Blanc, 2006 Dry Creek North Coast Cabernet

Just a couple of quick notes on some good wines I've had recently.  Perrin's 2008 Reserve Blanc, a white Cotes-du-Rhone made from 50% Grenache Blanc, 20% Bourboulenc, and 10% each Marsanne, Roussanne, and Viognier, is what a white Cotes-du-Rhone should be, and one of the best ways you could spend ten bucks on a white wine (I paid US$9.98 at Ta Lin in Albuquerque).  I've posted before on Perrin's excellent reds; this shares some characteristics with them, notably a certain almost glyceriny smoothness, but without stickiness... and a characteristic that I'd call "watery" except that sounds bad, and this is good---it's probably associated with being relatively low in alcohol, and not extremely high (nor excessively low) in acid or tannin.  Mainly, it's got intense, but refreshing rather than tiring, flavors, flavors akin to those of a good chardonnay-based wine from the Maconnais, but maybe slightly fruitier and slightly more floral.  And much cleaner, more balanced, and more intense than most of the Macon-Villages and such I come across (in North America, anyway) in this price range.  Some resemblance to nice Spanish whites, like Muga's white Rioja.

A favorite wine at a party I recently attended was the 2006 Clos du Bois North Coast Cabernet.  Nothing super-complex, just a very drinkable, fairly rich, but balanced, Cab.  It Googles up at $12-14, which I'd say is reasonable although not a steal.  (A 2007 Acacia Pinot Noir, tasted afterwards, seemed excessively jammy and just not enjoyable to drink, which surprised me as their Pinots have seemed decent value even in the $20 range, in the past.  Perhaps not fair to judge based just on one bottle.)

Consensus on Deolalikar's P vs. NP proof-attempt (via Scott Aaronson)

Haven't been blogging much recently, but I certainly need to post this link on Deolalikar's claimed proof of P ? NP:  Scott Aaronson saying (nearly a month ago) that a consensus has developed that it's fatally flawed.  Scott's post is worth reading in part as a preliminary guide to what you'd need to learn about to really tackle this problem---and what to do to increase your --- and others' --- confidence you'd actually solved it.

I think I already linked Richard Lipton's less conclusive "Fatal Flaws...?" post.   Lipton wrote another good post a few days later (a week after the proof was posted).  These lack a definitive statement that "it's dead" (one section is labeled "it ain't over till it's over".  Scott seems to have concluded on the basis of most of the same evidence that it was almost certainly over.  The fact that googling "Deolalikar proof" turns up nothing later than Aug. 12 on the first page (I see a broken link from Aug. 18 on the second page) also suggests it's dead.

Link on paper on profiling/importance sampling in context of screening for terrorists

Mainly storing a link to this interesting paper that raises some questions:

William Press, "Strong profiling is not mathematically optimal for discovering rare malfeasors".  Weak profiling apparently is---under the assumptions of his model, which seem to me a rather imperfect fit, but not wholly irrelevant, to most real-world terrorist-screening scenarios.   No implied view from me on the correctness or relevance of these results, pending more careful reading and thought.

Aha, just realized it's that Bill Press--former (pre-2004) deputy director for Science and Technology at LANL (curently at UT Austin, on leave from LANL).

Oh yeah, link is from The Yorkshire Ranter, who got it from Bruce Schneier.

Breadth and depth

Nice point by Seth Godin on how to see if someone really knows what they're talking about.  I see it in my field too---people judging by the extent to which one can carry on an extemporaneous conversation about the subject at hand, revealing months of thought about the topic at hand, years of study of the background issues.  On the other hand, we also need --- sorely, and in my opinion, even in technical fields --- people with breadth---non-superficial breadth, to be sure.  How does one spot that?

Good recent quantum information, computation, foundations talks

I must store some references to good recent talks, in part so I don't forget them:

Two talks by Tsuyoshi Ito:  an IQC theory lunch talk about how the complexity class defined by interactive proof systems with two provers who may share *arbitrary non-signaling correlations* (rather than just quantum ones) with each other, turns out to be PSPACE.  Communication between verifier and provers is classical.  This is the same class as that defined by quantum interactive proof systems (for any fixed number of provers, but *without* shared correlations, quantum or otherwise)---a result due (at least the hard direction, that PSPACE is contained in QIP) to Jain, Ji, Upadhyay, and Watrous).  Very nice stuff.  (Note that as far as I know it doesn't imply that two-prover proof systems with classical communication between verifier and provers, but verifiers sharing quantum entanglement, is in PSPACE.  Although this latter model gives the verifiers, collectively, strictly less power, the reduction in their collective power could increase the power of the proof system:  crudely speaking, the provers might have less power to attempt to coordinate in bamboozling the verifier into wrongly accepting.

The really kooky, like me, might ask, what if we allow the communication between verifiers and provers to involve exchanging the kinds of systems involved in the provers' shared non-signaling correlations.  "Popescu-Rohrlich bits", or generalizations involving larger numbers of outcomes per measurement, and larger numbers of measurements.  (States of "semiclassical test spaces", in a different lingo.)

Tsuyoshi's other talk was an informal one at the quantum information group meeting at PI, about XOR games with more than two players.  More on it later.

A few weeks ago Stephanie Wehner gave us a lovely informal quantum foundations seminar on a recent paper she wrote with Jonathan Oppenheim, whose thesis is that if quantum theory were more nonlocal it would violate uncertainty relations.  The uncertainty relations involved are a new type she (and Andreas Winter?) introduced, called "finegrained uncertainty relations".  I'll try to summarize this talk in a later post, too.