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AI Startup Says It Has Defeated Captchas

technologyreview.com

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Re: AI Startup Says It Has Defeated Captchas

#81
post #65
post #61

Earlier quoted context omitted.

Well my point was rather practical than philosophical: if you take a human at say classification task, they'd be able to explain why they identify bicycle as bicycle and not, say, bulldozer. You can't readily have this with ANNs; all you have is a bunch of weight coefficients and feedback loops.

if you take a human at say classification task, they'd be able to explain why they identify bicycle as bicycle and not, say, bulldozer. I don't think this is such an easy task. In the professional world of scientific taxonomy there are many problems with classification. The problem seems to stem from the tension between intensional and extensional definitions.

Yes but you still are able to verbalize these problems, quite unlike when you stuck with a misfiring ANN. In symbolic approaches, e.g. inference engines, you have comparable explanatory facilities.

Re: AI Startup Says It Has Defeated Captchas

#82
post #40

So they have invented the world's best OCR software?

Not really, unless your corpus consists mainly of hopelessly distorted characters. They state a captcha solving rate of around 90%. For OCR to be cost-competitive, you typically need it to be correct on about 98% of characters or more; below that and it is typically cheaper to have a human typing in the text than to have a human correct OCR'd text. Modern OCR engines typically do better than 99% on text that isn't re…

hi, would it be possible to see your dissertation somewhere? thx
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