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Facebook open-sources Detectron

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Re: Facebook open-sources Detectron

#91

Post by pbhjpbhj »

culerawo wrote: post #59
kbenson wrote: post #53

Earlier quoted context omitted.

Google doesn't even show a catpcha if they have enough tracking info for toy to verify you're a human, which is pretty simple for them if you don't clear all your cookies for a few days. I'm pretty sure Google thinks if they have to show you a catpcha they've failed, but along with that they don't feel the need to make the catpchas particularly easy if they do have to show it.

Except when it doesn't. Every so often it suddenly spams one with sheer number of captcha on sites that use the Google's Recaptcha API. Then you have to solve detect the houses, cars, store-fronts, deceiver plates and street signs several times successfully to move on or be prepared to solve several more captches to be allowed to move on. I would wish Google fix Recaptcha. It used to be so good.

Whenever I get spammed with captchas I assume the site is somehow redirecting them to me from a bot.

Re: Facebook open-sources Detectron

#92

Post by pbhjpbhj »

kurtisc wrote: post #81
megous wrote: 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.

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, ...

Re: Facebook open-sources Detectron

#93

Post by mcintyre1994 »

schrep wrote: post #26
itsa2 wrote: post #22

Earlier quoted context omitted.

In case you didn't realize, the guy you're talking to is the CTO of what some may call a "large company."

Doesn’t mean I’m right :) - see above as he had a point.

Assuming from context you're CTO of Facebook, the facebook.com/schrep link in your profile isn't working:

This page isn't available. The link you followed may be broken, or the page may have been removed.

Re: Facebook open-sources Detectron

#94

Post by hultner »

schrep wrote: post #19
adventured wrote: post #16

Earlier quoted context omitted.

I would expect it to work on detecting the mismatching of content for types of communities in general. For example, preventing pictures of cats or giraffes being uploaded as a product photo on Poshmark when it's supposed to be a pair of shoes. That type of check should become standard in a short amount of time for all communities that accept photos (that isn't meant to be general purpose, eg Imgur).

For example marketplace (where you can sell items on Facebook) will suggest a category for the item if you upload a photo.

When could counterfeits be detected with a somewhat decent accuracy? Is it something that has been attempted?

I checked out Facebook Marketplace a few times since the launch and and everytime I'm just overwhelmed by the sheer amount of better or worse counterfeits.

On top of that I start getting notifications more counterfeits, for a short while I reported them but after a while it felt pointless and now I just ignore the marketplace tab.

Re: Facebook open-sources Detectron

#95

Post by xiphias »

ejstronge wrote: post #14
xiphias wrote: post #4

I'm happy that tech companies are open sourcing basic research all the time, and thinking a lot about what would have happened if large pharmacy companies did the same thing. I'm just hopeful that with new biotech companies the science behind curing people will get faster as well.

Unlike the case in tech, pharma basic research is far less important in advancing our knowledge when compared to academia. A good example comes from the last few blockbuster cancer therapies - CAR-T cells and checkpoint blockade all arose in academic labs. Also, for drugs that do make it to market, efficacy and side effect information is published as a condition of drug approval, at least for new drugs. Whether basic…

Thanks, this is the kind of answer I was looking for. It's just a bit sad that the companies rely so heavily on academia. About the papers on efficacy: I remember that I wanted to slice the efficacy data to customize it more to compute confidence intervals for my ex girlfriend's case who has breast cancer (BRCA2), but she didn't want to have hemotherapy and wanted to see if the drug can help in that case as well, but the raw data in the testing wasn't published.

Re: Facebook open-sources Detectron

#96

Post by croon »

gldalmaso wrote: post #86
m_ke wrote: 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 don't know, maybe I'm missing something.

The thing you're missing is volume. Even if you assume the vast majority of people will attempt to mess up your data, when you have enough people doing it, you can look at them on aggregate and based on patterns disregard bad data. It might be "expensive", but still worth it.

Re: Facebook open-sources Detectron

#97

Post by skate22 »

JepZ wrote: post #45

Anybody knows a way to run CUDA programs with the open source driver (nouveau)?

I had to specifically disable nouveau to get cuda to install correctly on ubuntu 16.04. You need an nvidia card and drivers that are new enough to run the later versions of cuda.

Re: Facebook open-sources Detectron

#98

Post by skate22 »

m_ke wrote: post #42
yters wrote: post #40

Is there a class of math problem humans can solve but computers cannot? Then we could just use these problems as a guaranteed test instead of the current CAPTCHA arms race.

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.

Ive seen bot detection arms races in video games first hand, and there is a lot more to gain on webstes. Surely there are engineers smart enough to combat google's bot detection, and with massive sets of labeled data google stands a fighting chance.

Re: Facebook open-sources Detectron

#99

Post by croon »

stmw wrote: post #49
inlined wrote: post #20

Earlier quoted context omitted.

What was the carbon footprint of the turk machines the Python can replace?

are you seriously comparing inefficient python code to humans?

If you choose to measure something in simply one dimension, don't be surprised (offended?) when someone else builds on your premise.

Humans are objectively terrible for the environment. Now you might start to argue other metrics instead, or that on an nth removed degree it/we might result in a net positive, but then you've abandoned your initial premise anyways.

Re: Facebook open-sources Detectron

#100

Post by na85 »

Spare_account wrote: post #88
Jaruzel wrote: 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…

Complaining about a non-existent SSL cert and then backseat driving the "fix", using words like "you need to", all based on shady memories of configuring IIS a decade ago?

Really?

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