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Facebook open-sources Detectron

research.fb.com

101–110 of 188 posts

Re: Facebook open-sources Detectron

#101
post #7

So is this the end of Google captchas asking for where the car/sign/whatever is? Will there be a final battle of AIs, where they will kill each other, and the unfettered access to websites over VPN/tor wins and laughs the last laugh?

More likely websites will just block Tor exit nodes + whole swaths of IP space (i.e. all AWS+GCP+Azur+DO etc IPs).

Re: Facebook open-sources Detectron

#103
post #81

Earlier quoted context omitted.

For the car captchas, I've found actually clicking all the boxes with part of a car will always be a wrong answer (distinct from when it just makes you answer twice). Instead, you have to click on the squares that you know it thinks are cars. This creates a twisted Turing test situation where, to prove you are a human, you have to pretend to be a machine's idea of what a human is.

The problem with the cars for me is their definition -- is that van classed as a car, how about the half-back, what about a 4x4, what about a 4x4 with no back windows, ...

What about a square that contains just a sliver of the car from the next box over? Does that still count? I hypothesize that my attempt to classify every pixel related to a car as a "car" may contribute to my failing of these tests.

Re: Facebook open-sources Detectron

#104

Earlier quoted context omitted.

The problem with the cars for me is their definition -- is that van classed as a car, how about the half-back, what about a 4x4, what about a 4x4 with no back windows, ...

What about a square that contains just a sliver of the car from the next box over? Does that still count? I hypothesize that my attempt to classify every pixel related to a car as a "car" may contribute to my failing of these tests.

This is what kurtisc is saying. The algorithm is unable to classify those pixels, so you have to guess which bits of the car can be detected by the algorithm and then select only those. So you have machines asking humans to think like a machine in order to prove they are human.

Re: Facebook open-sources Detectron

#106
post #81
post #7

So is this the end of Google captchas asking for where the car/sign/whatever is? Will there be a final battle of AIs, where they will kill each other, and the unfettered access to websites over VPN/tor wins and laughs the last laugh?

For the car captchas, I've found actually clicking all the boxes with part of a car will always be a wrong answer (distinct from when it just makes you answer twice). Instead, you have to click on the squares that you know it thinks are cars. This creates a twisted Turing test situation where, to prove you are a human, you have to pretend to be a machine's idea of what a human is.

Isn't it supposed to learn from you? IE, answering technically correctly but what it thinks is incorrect is slightly annoying for you, but better for the system in the long run. (ie better for everyone)

Re: Facebook open-sources Detectron

#107
post #85

Earlier quoted context omitted.

Your https-everywhere is doing it wrong. I don't have an SSL on my personal site (no requirement to). I do have SSL on other domains that share that IP however.

I'm not expert on this but what I'm seeing is that port 443 is serving up a response when jaruzel.com is requested on that port. While you may not be actively advertising that domain with https URLs, it is valid for clients to request one speculatively. There isn't a valid cert for that domain and for some reason for server is offering a different one. Presumably you need to unbind 443 from that host header name (thi…

"port 443 is serving up a response when jaruzel.com is requested on that port"

The only response is a 404, which is exactly what should be displayed (to the best of my knowledge) for a domain that isn't configured for that IP/port when there are other sites utilizing that IP/port.

Re: Facebook open-sources Detectron

#109
post #42

Earlier quoted context omitted.

There is no arms race. 99.9% of the time Google knows if you're a robot based on your browser state. They make you label the images because it's a free way to get training data.

I see this argument a lot and considered it the case to, but I have to wonder if that really is the case. Wouldn't google be empowering people to really mess up their training data? If I'm trying to automate a system to fool their captcha, I'm probably getting a lot of bad results. Or I could just be intentionally feeding them bad data, the fact that not being allowed through captcha keeps letting me make more and mo…

I believe they cross-check between different users. I believe it used to work something like this on the old recaptcha system (the one with the words or house numbers): They show you 2. 1 is known by recaptcha, the other one isn't. If you enter the known one correctly, you can enter. The unknown one is presented to other users and when there is enough consensus amonst users it is promoted to a known one. So it's hard to mess with the system as an individual.

Re: Facebook open-sources Detectron

#110
post #81
post #7

So is this the end of Google captchas asking for where the car/sign/whatever is? Will there be a final battle of AIs, where they will kill each other, and the unfettered access to websites over VPN/tor wins and laughs the last laugh?

For the car captchas, I've found actually clicking all the boxes with part of a car will always be a wrong answer (distinct from when it just makes you answer twice). Instead, you have to click on the squares that you know it thinks are cars. This creates a twisted Turing test situation where, to prove you are a human, you have to pretend to be a machine's idea of what a human is.

I have more problems with bridges than with cars. The damn thing forces you to select 3 bridges, except that there are only 2... So you are forced to select what it thinks is a bridge, and confirm his erroneous bias even more.
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