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AI

The Flaw Lurking In Every Deep Neural Net 230

Posted by timothy
from the what-if-that-cat-was-your-mother dept.
mikejuk (1801200) writes "A recent paper, 'Intriguing properties of neural networks,' by Christian Szegedy, Wojciech Zaremba, Ilya Sutskever, Joan Bruna, Dumitru Erhan, Ian Goodfellow and Rob Fergus, a team that includes authors from Google's deep learning research project, outlines two pieces of news about the way neural networks behave that run counter to what we believed — and one of them is frankly astonishing. Every deep neural network has 'blind spots' in the sense that there are inputs that are very close to correctly classified examples that are misclassified. To quote the paper: 'For all the networks we studied, for each sample, we always manage to generate very close, visually indistinguishable, adversarial examples that are misclassified by the original network.' To be clear, the adversarial examples looked to a human like the original, but the network misclassified them. You can have two photos that look not only like a cat but the same cat, indeed the same photo, to a human, but the machine gets one right and the other wrong. What is even more shocking is that the adversarial examples seem to have some sort of universality. That is a large fraction were misclassified by different network architectures trained on the same data and by networks trained on a different data set. You might be thinking 'so what if a cat photo that is clearly a photo a cat is recognized as a dog?' If you change the situation just a little and ask what does it matter if a self-driving car that uses a deep neural network misclassifies a view of a pedestrian standing in front of the car as a clear road? There is also the philosophical question raised by these blind spots. If a deep neural network is biologically inspired we can ask the question, does the same result apply to biological networks? Put more bluntly, 'Does the human brain have similar built-in errors?' If it doesn't, how is it so different from the neural networks that are trying to mimic it?"
Google

Protesters Show Up At the Doorstep of Google Self-driving Car Engineer 692

Posted by Soulskill
from the go-home-jerks dept.
mpicpp sends this report from Ars Technica: "Protests against tech giants and their impact on the San Francisco Bay Area economy just got personal. According to an anonymous submission on local news site Indybay, an unknown group of protesters targeted a Google engineer best known for helping to develop the company's self-driving car. ... The protest against Levandowski came the same day that the San Francisco Municipal Transit Authority (SFMTA) voted for the first time to take action regulating Google, Facebook, Apple, and a number of other large tech companies that shuttle workers in private, Wi-Fi-enabled buses from the Bay Area to points south in Silicon Valley."

Comment: Re:Quick question (Score 2) 139

by bsa3 (#45814413) Attached to: Cracking Atlanta Subway's Poorly-Encrypted RFID Smart Cards Is a Breeze

There are indeed reasonable number of fare-free systems. But you neglect the core purpose of public transit as it is seen by most US governments—i.e. distributing cash. Even if a system has 10% farebox recovery, they still get to buy the equipment and employ people to collect the money. Sure, they could go to proof-of-payment (or drop fares entirely), and further reduce costs by putting the Buy America Act and Davis-Bacon out of their misery, but that would reduce the opportunity for graft.

Comment: Re:firing squads have one blank. (Score 1) 1160

by bsa3 (#45244477) Attached to: US Executions Threaten Supply of Anaesthetic Used For Surgical Procedures

In practice, death sentences in the US tend to be more expensive, and that's leaving aside the far-too-high rate of improper convictions. Perhaps an alternate universe with substantially less judicial process would be cheaper, but that option isn't on the menu.

Mars

Craig Venter Wants To Rebuild Martian Life In Earth Lab 142

Posted by timothy
from the stacking-up-the-if-thens dept.
Hugh Pickens writes "Karen Kaplan reports in the LA Times that Craig Venter is making plans to send a DNA sequencer to Mars. Assuming there is DNA to be found on the Red Planet – a big assumption, to be sure – the sequencer will decode its DNA, beam it back to Earth, put those genetic instructions into a cell and then boot up a Martian life form in a biosecure lab. Venter's 'biological teleporter' (as he dubbed it) would dig under the surface for samples to sequence. If they find anything, 'it would take only 4.3 minutes to get the Martians back to Earth,' says Venter, founder of Celera Genomics and the Institute for Genomic Research (TIGR). 'Now we can rebuild the Martians in a P4 spacesuit lab.' It may sound far-fetched, but the notion of equipping a future Mars rover to sequence the DNA isn't so crazy, and Venter isn't the only one looking for Martian DNA. MIT research scientist Christopher Carr is part of a group that's 'building a a miniature RNA/DNA sequencer to search for life beyond Earth,' according to the MIT website 'The Search for Extra-Terrestrial Genomes.' SETG will test the hypothesis that life on Mars, if it exists, shares a common ancestor with life on Earth. Carr told Tech Review that one of the biggest challenges is shrinking Ion Torrent's 30-kilogram machine down to a mere 3 kg – light enough to fit on a Mars rover."
Microsoft

Nathan Myhrvold, Do-Gooder 109

Posted by timothy
from the not-to-mention-serious-cook dept.
theodp writes "Perturbed by a GigaOm item which likened him to 'Darth Vader doing some charity work as he completes the Death Star,' Intellectual Ventures CEO Nathan Myhrvold talks about the goals of his 'Global Good' program and fires back at critics in an interview with GeekWire's Todd Bishop. The technology industry is a little too obsessed with 'sending little messages to each other and having fun on a social network' for Myhrvold, who hopes to tackle bigger problems like malaria, polio, and HIV with the help of funding from buddy Bill Gates. 'I don't mean to call Zynga out in a negative way,' says Myhrvold, 'but is Zynga doing God's work? Is Facebook doing God's work? Even setting aside what God's work means, I think it's pretty easy to say, those companies are doing wonderful things, but they are for-profit ventures. It's either tools or toys for the rich.' BTW, if you're ready to do God's work, IV's looking for a Vice President, Global Good."

Receiving a million dollars tax free will make you feel better than being flat broke and having a stomach ache. -- Dolph Sharp, "I'm O.K., You're Not So Hot"

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