You will immediately know that you porn. And you will understand the computer?

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2019-01-31 16:45:16

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You will immediately know that you porn. And you will understand the computer? Source:

At the beginning of last month, Tumblr announced that it would ban porn. When a new policy in relation to content entered into force, after about two weeks — December 17 — it has become evident that there will be problems. After deploying artificial intelligence system, which was perebanit all the porn on the website, it mistakenly flagged innocent posts in 455,4 million blogs on the website among 168,2 billion posts: vases, witches, fish, and so on.

the

artificial intelligence

Although it is unclear what the automatic filter used Tumblr or have created your own company has not responded to inquiries on this topic — it is obvious that the social network was stuck between his own policy and technology. For example, the inconsistent position of the site in relation to "women showing nipples" and artistic nudity, for example, led to contextual solutions, which demonstrate that even Tumblr doesn't know what to ban on the platform. As part of the company to determine what it considers obscene?

First, to block risky content is difficult, because initially it is difficult to determine what it is. The definition of obscenity — a bear trap, which is over a hundred years, in 1896 the United States first passed laws regulating obscenity. In 1964 in Jacobellis against Ohio regarding whether a Ohio to ban the screening of Louis Malle, the Supreme court issued perhaps the most famous definition of hard pornography today: "I shall not today attempt further to define this kind of material, which, as I understand it, will be included in the shorthand description; and perhaps I could never succeed in intelligibly to do it," said judge Stewart. "But I know what it is when you see the movie associated with this case, it isn't."

Machine-learning algorithms on the same problem. This is the problem trying to solve Brian Delorge, CEO Picnix, a company that sells a specialized artificial intelligence technology. One of their products — the Iris — is an application on the client side, which is used to discover pornography is to "help people", says DeLong, "who do not want porn in my life." He noted that another problem with porn is that there could be anything, a lot of different things and images that are not pornographic, may have a similar items. The image of the party on the beach may be blocked not because it has more skin than the pictures in the office, but because it's on the edge. "That's why it is very difficult to train the image recognition algorithm all at once," says DeLong. "When the definition becomes difficult for people computer is also facing difficulties". If people can't agree on what is porn and what is not, can the computer at all hope to know the difference?

In order to teach the AI to detect porn, the first thing you need to do is to feed him porn. A lot of pornography. Where can I get it? Well, the first thing people do is download a bunch of VIDOS from Pornhub, XVideos, says Dan Shapiro, co-founder of a startup Lemay.ai that creates filters AI for their clients. "It's one of those grey areas of legal nature — for example, if you are studying on the content of others whether it belongs to you?".

After the programmers are downloading tons of porn, they cut from the video footage that pornography is not, to make sure that the footage will not lead to blocking the pizza. Platform pay people, for the most part, outside the United States, for the marking of such content; work in low-paid and boring as to enter a "captcha". They just sit there and say: is it porn, it's this. Filter has, because all the porn goes with marking. Learning is better if to use not just pictures, but large sample data.

"Often have not just filter porn, but rather the associated material," Shapiro says. "Like fake profiles with photo, girls and the phone." He is referring to sex workers in search of clients, but it can be anything not quite legal. "It's not porn, but this kind of thing you don't want to see on the platform?". Good automated moderator is trained on millions — if not tens of millions — examples of content, and therefore can save a lot of man hours.

"you Can compare it to the difference between a child and an adult," says Matt Zeiler, CEO and founder of Clarifai, a startup in the field of computer vision, which implements the filtering of images for corporate clients. "I can tell you for sure — a couple of months ago we had a child. They know nothing of the world, for them everything is new." You have to show the child (algorithm) a lot of things, that it is something learned. "Millions and millions of examples. But as adults — when we have created so a lot of context about the world and understand how it works, we can learn something new from just two examples." (Yes, to teach AI to filter adult content — it's like showing a child a lot of porn). Today, companies like Clarifai are growing rapidly. They have a good database of the world, they can distinguish dogs from cats dressed from naked. Company Celera uses its model for training new algorithms for their clients — because the original model has processed a lot of data, a personal version will require a new dataset to work with.

However, the algorithm is difficultto do it right. With content that is obviously pornographic, it handles well, but the classifier may incorrectly mark the announcement of the underwear as taboo, because the picture is more skin than, say, the office. (Bikini and underwear, according to Celera, very difficult). This means that those involved in marking should focus on these extreme cases in its work, giving priority to the fact that it is difficult to classify models.

What is the most difficult?

"Anime porn," says Zeiler. "The first version of our detector nudity is not used for learning cartoon pornography". Many times AI messes up because I didn't recognize hentai. "After working on this for a client, we have implemented a lot of his data to the model and significantly improved the accuracy of filter cartoon pictures, retaining the accuracy of real photos," says Zeiler.

The Technology that is trained to sniff out porn, it can be used on other things. The technology underlying this system is surprisingly flexible. It's more than anime Tits. Jigsaw from Alphabet, for example, is widely used as an automatic moderator review in the newspaper. This software works similarly to the classification of the images, except for the fact that sorts by toxicity, not the nudity. (Toxicity in a text review to determine as difficult as pornography in the pictures). Facebook uses a similar automatic filtering to detect suicidal messages and content associated with terrorism, and he was trying to use this technology to detect the fake news on its massive platform.

All of this still depends on human supervision; we cope better with ambiguity and ambiguous context. Zeiler says he does not think that his product has deprived someone of work. It solves the scaling problem of the Internet. People still will train AI, sorting and tagging content so that the AI could tell the difference.

This Is the future of moderation: individual, turnkey solutions provided by companies that do their business on the training of more sophisticated classifiers more data. Just as Stripe and Square have to offer ready-made payment solution for businesses that don't want to handle them independently, startups like Clarifai, Picnix and Lemay.ai will provide online moderation.

Dan Shapiro from Lemay.ai hopeful. "As with any new technology, it is still in the process of the invention. So I don't think we lose in case of failure". But can AI ever act independently without the supervision of a man? It is not clear. "There is no little man in the snuff-box, which filters every shot," he says. "We need to get data from everywhere, in order to train the algorithm".

Zeiler, on the other hand, thinks one day artificial intelligence will moderate everything on their own. In the end, the number of interventions on the part of the people will be reduced to zero or insignificant effort. Gradually the efforts of the human will turn into the fact that the AI now can not do, like a discussion of high-level identity — only that people have.

The Recognition of pornography is part of that. Identification is a relatively trivial task for humans but much harder to teach an algorithm to recognize the nuances. The determination of the threshold, when the filter marks the image as pornographic or not pornographic, is also challenging, partly mathematical.

Artificial intelligence is an imperfect mirror of how we see the world, just as pornography is a reflection of what happens between people when they are alone. It has some truth, but the full picture is not.

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