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Similarly, Google purchased reCaptcha and ended up harnessing the stream of human interaction into that to, among other things, classify all of their Street Vie
by joshavant 2y ago
Similarly, Google purchased reCaptcha and ended up harnessing the stream of human interaction into that to, among other things, classify all of their Street View content (e.g. select the stop lights/bridges/license plates/etc).
- bhasi 2y agoI've always wondered: wouldn't they need to have already classified those captchas for them to determine whether the user has made the right selections? If so, doesn't that defeat its "real" purpose of getting people to do that classification work for them?
- Cheer2171 2y agoThat's why you have to do multiple tasks in one verification. Some are against a known ground truth and used as verification, but you don't know which one.
- lgas 2y agoIt would appear that asking multiple users and taking the consensus does the trick.
- munificent 2y agoI believe this is the answer. It works especially well here because there's no easy way for multiple bad actors to collude and generate a false consensus.
- newaccount74 2y agoThey can show you some objects that they already classified and some objects they are unsure about.
- ThrowawayTestr 2y ago[dead]
- sakjur 2y agoIIRC, back when it was text, you were shown two words and could type anything for one of the words (typically the easier to read word) and the other word would be a word they’d intentionally blurred a bit to use for the actual captcha check.
- grahamjpark 2y agoGood podcast on the creation of recaptcha: https://pca.st/zze1abc4 https://pca.st/zze1abc4
- Grimblewald 2y agoGet enough people to do the same thing and take the consensus.
- KomoD 2y agohCaptcha does the same, they offer a data labeling service