Slashdot Mirror

Hugh Pickens writes "Steve Lohr reports that an impressive crossword-solving computer program called Dr. Fill matched its digital wits against 600 of the nation's best human crossword-solvers, finishing only 141st at the American Crossword Puzzle Tournament in New York. 'I wish it had done better,' says Dr. Matthew Ginsberg, the creator of Dr. Fill and an expert in artificial intelligence. Dr. Fill typically thrives on conventional crosswords, even ones with arcane clues and answers; it solved one of the most difficult puzzles at the tournament perfectly. But the computer does poorly with clever clues based on puns or jokes, because humans and machines solve the crosswords very differently. Humans recognize patterns based on accumulated knowledge and experience, while computers make endless calculations to determine the most statistically probable answer. The computer program is literal minded, and tends to struggle on puzzles with humor, and puzzles with unusual themes or letter arrangements. Take this clue from a 2010 puzzle in The Times: Apollo 11 and 12 (180 degrees). The answer is SNOISSIWNOOW, seemingly gibberish. A clever human could eventually figure out that those letters, when rotated 180 degrees, spell MOON MISSIONS. Humans get the joke, while a literal-minded computer does not. 'Occasionally, Dr. Fill just doesn't get it,' says Ginsberg. 'That's my nightmare.'"

An anonymous reader writes with this quote from the BBC: "Rocket entrepreneur Elon Musk believes he can get the cost of a round trip to Mars down to about half a million dollars. The SpaceX CEO says he has finally worked out how to do it, and told the BBC he would reveal further details later this year or early in 2013. ... 'My vision is for a fully reusable rocket transport system between Earth and Mars that is able to re-fuel on Mars — this is very important — so you don't have to carry the return fuel when you go there,' he said. 'The whole system [must be] reusable — nothing is thrown away. That's very important because then you're just down to the cost of the propellant.' ... He conceded the figure was unlikely to be the opening price — rather, the cost of a ticket on a mature system that had been operating for about a decade. Nonetheless, Musk thought such an offering could be introduced in 10 years at best, and 15 at worst."

New submitter srussia writes with this quote from Wired: "DARPA director Regina Dugan will soon be stepping down from her position atop the Pentagon's premiere research shop to take a job with Google. Dugan, whose controversial tenure at the agency lasted just under three years, was 'offered and accepted at senior executive position' with the internet giant, according to DARPA spokesman Eric Mazzacone. She felt she could not say no to such an 'innovative company,' he adds. ... 'There is a time and a place for daydreaming. But it is not at DARPA,' she told a congressional panel in March 2011. 'DARPA is not the place of dreamlike musings or fantasies, not a place for self-indulging in wishes and hopes. DARPA is a place of doing.' For an agency that spent millions of dollars on shape-shifting robots, Mach 20 missiles, and mind-controlled limbs, it was something of a revolutionary statement. The shift was only one of the reasons why Dugan was a highly polarizing figure within her agency, and in the larger defense research community."

gzipped_tar writes "Whether the fundamental constants really stay the same is always a question worth asking. In particular, the constancy of Planck's Constant is something that cannot be simply ignored, owing to its universal importance in linking the quantum and classical pictures of our world. Using publicly available GPS data and terrestrial clocks, researchers form the California State University were able to verify that the value of h indeed stays the same across different positions in the vicinity of our Earth. Their result says the local position invariance of h is satisfied within a limit of 0.007. The paper is published in the journal Physical Review Letters (abstract), and a free-to-read preprint is available on arXiv. In short: by the well-known formula E = h * f, a hypothetical variation on h induces changes in f, the transition frequency that keeps the time in atomic clocks, both on earth and aboard the satellites. When taking account of other time variations, such as general relativistic time dilation, and assuming the invariance of E (atomic transition energy) on physical grounds, we can figure out an upper bound on the variation of h reflected in the measured variation in f."

An anonymous reader writes "X-Prize Founder Peter Diamandis, speaking at SXSW, says he wants to set up a $10 million prize for fixing education — but he needs help figuring out how to target the problem. From the article: 'He said he has considered multiple directions that an Education X Prize could take, such as coming up with better ways to crowd-source education, or rewarding the creation of "powerful, addictive game" that promotes education. But he isn’t sure which way to go. There’s no shortage of high-tech visionaries and tycoons these days, running around with ideas about how to fix education. Many of them are finding, though, that technology alone isn’t enough. Exciting ideas founder quickly if they don’t sustain motivation in students who perform at widely different levels. Other challenges include the need to engage effectively with school districts, teachers and parents.'"

First time accepted submitter blackfrancis75 writes "We keep hearing different figures quoting the thousands of people who've been sued by RIAA for illegally downloading online music, but I don't know anyone personally to whom it's happened. In fact it seems no-one I know knows anyone to whom it happened. Do you know anyone who was sued for 'piracy', or were you sued yourself? What was your experience?"

A new company called NuCaptcha provides animated video captchas it says are much harder for OCR-based programs to crack than static captchas, but lots easier for humans to figure out. While at the 2012 RSA conference, Timothy Lord pointed his camcorder at NuCaptcha CTO Christopher Bailey, and had him explain how video captchas work and how the company makes money. The video includes demos of the video captchas so you can see what they look like (and the company's website has lots more video captcha examples).

theodp writes "Over at Salon, Annie Keeghan does an Upton Sinclair number on the math textbook industry. In recent years, Keeghan explains, math has become the subject du jour due to government initiatives and efforts to raise the rankings of lagging U.S. students. But with state and local budgets constrained, math textbook publishers competing for fewer available dollars are rushing their products to market before their competitors, resulting in product that in many instances is inherently, tragically flawed. Keeghan writes: 'There may be a reason you can't figure out some of those math problems in your son or daughter's math text and it might have nothing at all to do with you. That math homework you're trying to help your child muddle through might include problems with no possible solution. It could be that key information or steps are missing, that the problem involves a concept your child hasn't yet been introduced to, or that the math problem is structurally unsound for a host of other reasons.' The comments on Keeghan's article are also an eye-opener — here's a sample: 'Sales and marketing budgets are astronomical because the expenses pay off more than investments in product. Sadly, most teachers are not curriculum experts and are swayed by the surface pitches. Teachers make the decisions, but are not the users (students) nor are they spending their own money. As a result, products that make their lives easier and that come with free meals and gifts are the most successful.' So, can open source or competitions build better math textbooks?"

Hugh Pickens writes "Wheels are the archetype of a primitive, caveman-level technology, and we tend to think that inventing the wheel was the number one item on man's to-do list after learning to walk upright. But LiveScience reports that it took until the bronze age (3500 BC), when humans were already casting metal alloys and constructing canals and sailboats, for someone to invent the wheel-and-axle, a task so challenging archaeologists say it probably happened only once, in one place. The tricky thing about the wheel isn't a cylinder rolling on its edge, but figuring out how to connect a stable, stationary platform to that cylinder. 'The stroke of brilliance was the wheel-and-axle concept,' says David Anthony, author of The Horse, the Wheel, and Language. To make a fixed axle with revolving wheels, the ends of the axle have to be nearly perfectly smooth and round, as did the holes in the center of the wheels. The axles have to fit snugly inside the wheels' holes, but not too snug, or there will be too much friction for the wheels to turn. But the real reason it took so long is that whoever invented the wheel would have needed metal tools to chisel fine-fitted holes and axles. 'It was the carpentry that probably delayed the invention until 3500 BC or so, because it was only after about 4000 BC that cast copper chisels and gouges became common in the Near East.'"

theodp writes "Apple, which is currently waging IP war on Android vendors, is no stranger to patent trolling. Citing the Steve Jobs bio, Forbes' Eric Jackson recalls how Steve Jobs used patents to get Bill Gates to make a 1997 investment in Apple. Recalled Jobs: 'Microsoft was walking over Apple's patents. I said [to Gates], "If we kept up our lawsuits, a few years from now we could win a billion-dollar patent suit. You know it, and I know it. But Apple's not going to survive that long if we're at war. I know that. So let's figure out how to settle this right away. All I need is a commitment that Microsoft will keep developing for the Mac and an investment by Microsoft in Apple so it has a stake in our success.' Next thing you know, BillG was lording over Jobs at Macworld Boston, as the pair announced the $150 million investment that breathed new life into then-struggling Apple. So, does Gates deserve any credit for helping create the world's most valuable company?"

Hugh Pickens writes "The BBC reports on how millions of people struggle to understand a payslip or a train timetable, or pay a household bill. Government figures show that almost half the working population of England have only primary school math skills, and research suggests that weak math skills are linked with an array of poor life outcomes such as prison, unemployment, exclusion from school, poverty and long-term illness. 'We are paying for this in our science, technology and engineering industries but also in people's own ability to earn funds and manage their lives,' says Chris Humphries. He is the chairman of National Numeracy, an organization seeking to emulate the success of the National Literacy Trust, which has helped improve reading and writing standards since it was set up nearly 20 years ago. The Department for Education wants the vast majority of young people to study math up to 18 within a decade to meet the growing demand for employees with high level and intermediate math skills. 'It is simply inexcusable for anyone to say "I can't do maths,"' adds Humphries. "

mr crypto writes with this quote from El Reg: "In 2010 the Washington DC election board announced it had set up an e-voting system for absentee ballots and was planning to use it in an election. However, to test the system, it invited the security community and members of the public to try and hack it three weeks before the election. 'It was too good an opportunity to pass up,' explained Professor Alex Halderman from the University of Michigan. 'How often do you get the chance to hack a government network without the possibility of going to jail?' With the help of two graduate students, Halderman started to examine the software. Despite it being a relatively clean Ruby on Rails build, they spotted a shell injection vulnerability within a few hours. They figured out a way of writing output to the images directory (PDF) on the compromised server, and of encrypting traffic so that the front-end intrusion detection system couldn't spot them. The team also managed to guess the login details for the terminal server used by the voting system. ... The team altered all the ballots on the system to vote for none of the nominated candidates. They then wrote in names of fictional IT systems as candidates, including Skynet and (Halderman's personal favorite) Bender for head of the DC school board."

Hugh Pickens writes "The NY Times reports that gas prices are already at record highs for the winter months — averaging $4.32 in California and $3.73 a gallon nationally. As summer approaches, demand for gasoline rises, typically pushing prices up around 20 cents a gallon. But gas prices could rise another 50 cents a gallon or more, analysts say, if the diplomatic and economic standoff over Iran's nuclear ambitions escalates into military conflict or there is some other major supply disruption. 'If we get some kind of explosion — like an Israeli attack or some local Iranian revolutionary guard decides to take matters in his own hands and attacks a tanker — than we'd see oil prices push up 20 to 25 percent higher and another 50 cents a gallon at the pump,' says Michael C. Lynch, president of Strategic Energy and Economic Research. A sharp rise in the prices of oil and gas would crimp the nation's budding economic recovery would cause big political problems at home for President Obama, who is already being attacked by Republican presidential candidates over gas prices and his overall energy policies. On the other hand, environmentalists see high gas prices as a helpful step toward the development of alternative energy. Secretary Treasury Steven Chu notably said in 2008 'we have to figure out how to boost the price of gasoline to the levels in Europe' to make Americans trade in their 'love affair with the automobile' for a marriage to mass transit. In the meantime President Obama is in a bind because any success in tightening sanctions on Iran could squeeze global oil supplies, pushing up prices and causing serious economic repercussions at home and abroad."

Hugh Pickens writes "AP reports that last week during a question-and-answer session at the company's annual shareholders' meeting CEO Tim Cook said he believes Apple has more money than it needs and his next challenge is to figure out whether Apple should break from the cash-hoarding ways of his predecessor, the late Steve Jobs, and dip into its $98 billion bank account to pay shareholders a dividend this year. 'Frankly speaking, it's more than we need to run the company.' The question of how to handle Apple's cash stockpile is a touchy one, partly because company co-founder Jobs had steadfastly brushed aside suggestions that the company restore its quarterly dividend which Jobs suspended in 1995 when it was in such deep trouble that it needed to hold on to every cent to keep from going bankrupt. Marketwatch analyst Mark Hulbert writes that a compelling case can be made that a huge cash hoard actually represents grave danger for Apple. That's because too much cash often burns a hole in managers' pockets, and they end up doing a poor job of investing that cash—engaging instead in foolish pursuits like empire building. Hulbert adds that a good strategy for ensuring that Apple remains a hungry, growth-oriented entrepreneurial company might be for it to distribute much of its cash to shareholders."

snydeq writes "Deep End's Paul Venezia sees few business IT situations that could make good use of full cloud storage services, outside of startups. 'As IT continues in a zigzag path of figuring out what to do with this "cloud" stuff, it seems that some companies are getting ahead of themselves. In particular, the concept of outsourcing storage to a cloud provider puzzles me. I can see some benefits in other cloud services (though I still find the trust aspect difficult to reconcile), but full-on cloud storage offerings don't make sense outside of some rare circumstances.'"

mikejuk writes "Is it possible to write a JavaScript program in no more than a tweet's length? A website called 140byt.es says it is and has an implementation of Tetris to prove it. Ok, it only has two types of block — hence its title "Binary Tetris" — and there's no rotate, but it works. The blocks fall down the screen and you steer them into place. You can try it out by playing the demo. Of course the real fun is in figuring out how it works and there is lots of help on the site — so if you're bored how about the 140 character challenge?"

Hugh Pickens writes "For decades, Target has collected vast amounts of data on every person who regularly walks into one of its stores. Now the NY Times Magazine reports on how companies like Target identify those unique moments in consumers' lives when their shopping habits become particularly flexible and the right advertisement or coupon can cause them to begin spending in new ways. Among life events, none are more important than the arrival of a baby, and new parents are a retailer's holy grail. In 2002, marketers at Target asked statisticians to answer an odd question: 'If we wanted to figure out if a customer is pregnant, even if she didn't want us to know, can you do that?' Specifically, the marketers said they wanted to send specially designed ads to women in their second trimester, which is when most expectant mothers begin buying all sorts of new things, like prenatal vitamins and maternity clothing. 'We knew that if we could identify them in their second trimester, there's a good chance we could capture them for years,' says statistician Andrew Pole. 'As soon as we get them buying diapers from us, they're going to start buying everything else too.' As Pole's computers crawled through the data, he was able to identify about 25 products that, when analyzed together, allowed him to assign each shopper a 'pregnancy prediction' score and he soon had a list of tens of thousands of women who were most likely pregnant. About a year after Pole created his pregnancy-prediction model, a man walked into a Target outside Minneapolis and demanded to see the manager. He was clutching coupons that had been sent to his daughter, and he was angry. 'My daughter got this in the mail!' he said. 'She's still in high school, and you're sending her coupons for baby clothes and cribs? Are you trying to encourage her to get pregnant?' The manager apologized and then called a few days later to apologize again but the father was somewhat abashed. 'It turns out there's been some activities in my house I haven't been completely aware of. She's due in August. I owe you an apology.'"

THE_WELL_HUNG_OYSTER writes "Over the years, I've had numerous scanners equipped with automatic document feeders — and all of them jam or grab multiple pages at a time (thereby missing pages). Like you, I've got years of tax returns and legal documents to scan, but with these kinds of barriers, it would take months to scan everything. Enterprise-grade machines cost 5 figures. How do Slashdotters become paper-free?"

An anonymous reader writes "In the Stanford Law Review Online, authors Frankel, Brookover & Satterfield discuss an ongoing lawsuit against Facebook where plaintiffs claimed the social network's 'Sponsored Stories,' displaying advertisements on Facebook including 'the names and pictures of users who have "Liked" a product,' violated the law. Facebook responded by asserting that '(1) Plaintiffs are "public figures" to their friends, and (2) "expressions of consumer opinion" are generally newsworthy.' The authors discuss the substantial impact this case might have on online privacy going forward: 'The implications are significant and potentially far-reaching. The notion that every person is famous to his or her "friends" would effectively convert recognizable figures within any community or sphere, however small, into individuals whose lives may be fair game for the ever-expanding (social) media. If courts are willing to find that nontraditional subjects (such as Facebook users) are public figures in novel contexts (such as social media websites), First Amendment and newsworthiness protections likely will become more vigorous as individual privacy rights weaken. Warren and Brandeis's model of privacy rights, intended to prevent media attention to all but the most public figures, will have little application to all but the most private individuals.'"

suraj.sun writes in with a story about the spread of full body scanners. It reads in part:"Passengers at airports across Australia will be forced to undergo full-body scans or be banned from flying under new laws to be introduced into Federal Parliament this week. In a radical $28 million security overhaul, the scanners will be installed at all international airports from July and follows trials at Sydney and Melbourne in August and September last year. The Government is touting the technology as the most advanced available, with the equipment able to detect metallic and non-metallic items beneath clothing. It's also keen to allay concerns raised on travel online forums that passengers would appear nude on security screens as they had when similar scanners were introduced at U.S. airports. The technology will show passengers on a screen as stick figures of neither sex."