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Comment: Re:I am not reading that. (Score 4, Informative) 246

by daw (#48404127) Attached to: Big Talk About Small Samples

Haselton needs an article about basic statistics. The 95% confidence interval on the difference between the two proportions is 6% +/- 17%, i.e. the range from about -11% to +23%. This (a) demonstrates that the sample is indeed underpowered to distinguish the sort of effect sizes that Haselton appears to be interested in, and (b) demonstrates that a +20% difference in proportion, contrary to Haselton's assertion, absolutely falls within the range of true values that can't be ruled out at a standard level of statistical confidence given the outcome of this experiment.

see http://www.kean.edu/~fosborne/bstat/06d2pop.html for the basic statistics.

Comment: Re:Why Bennett is more annoying than he has to be. (Score 4, Funny) 291

by daw (#47503355) Attached to: Why My LG Optimus Cellphone Is Worse Than It's Supposed To Be

Recently I met a gentleman whose profession was gathering up shopping carts in the supermarket parking lot, and he treated me to an extended discourse about the relative merits of the producers of the different Muppet movies. I recognized the classic signs of an autism spectrum disorder ("For example, a person with AS may engage in a one-sided, long-winded speech about a favorite topic, while misunderstanding or not recognizing the listener's feelings or reactions, such as a wish to change the topic of talk or end the interaction."), and for some reason, my thoughts turned to our old friend, Bennett Haselton.

Books

Book Review: Security Without Obscurity 51

Posted by samzenpus
from the read-all-about-it dept.
benrothke (2577567) writes Having worked at the same consulting firm and also on a project with author J.J. Stapleton (full disclosure); I knew he was a really smart guy. In Security without Obscurity: A Guide to Confidentiality, Authentication and Integrity, Stapleton shows how broad his security knowledge is to the world. When it comes to the world of encryption and cryptography, Stapleton has had his hand in a lot of different cryptographic pies. He has been part of cryptographic accreditation committees for many different standard bodies across the globe. Keep reading for the rest of Ben's review.
United States

How FBI Informant Sabu Helped Anonymous Hack Brazil 59

Posted by samzenpus
from the working-for-the-man dept.
Daniel_Stuckey (2647775) writes 'A year after leaked files exposed the National Security Agency's efforts to spy on citizens and companies in Brazil, previously unpublished chat logs obtained by Motherboard reveal that while under the FBI's supervision, Hector Xavier Monsegur, widely known by his online persona, "Sabu," facilitated attacks that affected Brazilian websites.The operation raises questions about how the FBI uses global Internet vulnerabilities during cybercrime investigations, how it works with informants, and how it shares information with other police and intelligence agencies.

After his arrest in mid-2011, Monsegur continued to organize cyber attacks while working for the FBI. According to documents and interviews, Monsegur passed targets and exploits to hackers to disrupt government and corporate servers in Brazil and several other countries. Details about his work as a federal informant have been kept mostly secret, aired only in closed-door hearings and in redacted documents that include chat logs between Monsegur and other hackers. The chat logs remain under seal due to a protective order upheld in court, but in April, they and other court documents were obtained by journalists at Motherboard and the Daily Dot.'

Comment: Re:For real this time? (Score 1) 293

by daw (#46863007) Attached to: Australian Exploration Company Believes It May Have Found MH370 Wreckage

You are overlooking the interesting bit, though:

The team then verified its findings by analysing images from the same area on March 5, three days before the plane disappeared.

"The wreckage wasn't there prior to the disappearance of MH370," Mr Pope said.

Um yeah, I think this is easy to explain

http://en.wikipedia.org/wiki/Regression_toward_the_mean

Comment: Re:Help us fix the mobile app scrolling (Score 1) 384

by daw (#42815629) Attached to: Experience the New Slashdot Mobile Site

One thing that does it (nexus 4/chrome) is a "fling" quickly followed by a touch. Normally the second gesture "catches" the inertial scroll and stops it, but in the slashdot mobile site it tends to be registered as a touch on whatever was scrolling past the finger. I think the same thing sometimes happens for two flings in a row (when it seemed like the first didnt register, but it was just laggy) or a fast fling followed by a touch & hold or slow drag.

Comment: Re:uhh (Score 2) 881

by daw (#41881689) Attached to: Nate Silver's Numbers Indicate Probable Obama Win, World Agrees

Sam Wang is a professor of neurobiology, not statistics. Also, the article does not refer to his predictions but to those of Nate Silver, who predicts only an 86% chance of Obama winning, notwithstanding the incorrect calculations using his data in the random anonymous script linked to the story.

Comment: Re:97.7% (Score 5, Informative) 881

by daw (#41881481) Attached to: Nate Silver's Numbers Indicate Probable Obama Win, World Agrees

The 538 website publishes the marginal probabilities of each state's outcome. The random anonymous script that is linked in this story just takes the product of these to compute the joint probability of Obama winning a particular set of states. This is of course a mistake. The probability that Obama wins Pennsylvania and Ohio is not the product of the probability that he wins each state separately, unless those two events are statistically independent. Of course, in reality and in the 538 model, they are not -- if Obama loses Pennsylvania he is also more likely to lose Ohio. I think this mainly accounts for the difference between the 538 prediction and the "prediction" of the random anonymous crap that the story links.

GNU is Not Unix

You Can't Oppose Copyright and Support Open Source 550

Posted by kdawson
from the baby-with-the-bathwater dept.
Reader gbulmash sends us to his essay on the fallacy of those who would abolish copyright. The argument is that without copyright granting an author the right to set licensing terms for his/her work, the GPL could not be enforced. The essay concludes that if you support the GPL or any open source license (other than public domain), your fight should be not about how to abolish copyright, but how to reform copyright.

Comment: Re:pricing versus performance (Score 1) 215

by daw (#15935180) Attached to: Boeing Scraps In-flight Internet Access
Admittedly I was trying to do email using pine/ssh and it probably would have been more bearable if I had been using a caching IMAP client rather than an interactive shell one. But not all that much better I think. And no, browsing the web didn't work for me at all. As I said, the connection seemed to be going up and down for minutes at a time, and when it was routing at all it was really too slow to even load a webpage.

Sigmund Freud is alleged to have said that in the last analysis the entire field of psychology may reduce to biological electrochemistry.

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