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Facebook says AI has helped spee

Facebook says AI has helped spee

作者: 张小邪先森 | 来源:发表于2017-11-30 13:26 被阅读7次

    A Facebook image of alleged American ISIS leader John Georgelas, known as Yahya Abu Hassan. Facebook says it is digging out and removing extremists’ propaganda and messages with the help of artificial intelligence.

    San Francisco| Facebook says it’s able to remove 99 per cent of Islamic State and Al Qaeda terrorist content before it’s flagged by users, thanks to advances in artificial intelligence that are helping stop the spread of terrorist content.

    Once Facebook is aware of the terrorist content, it removes 83 per cent of it within an hour of it being uploaded, the company said on Wednesday (AEDT).

    ‘‘We are encouraged by these numbers but we know we have to work to do and we are working on getting better and faster,’’ said Monika Bickert, who runs global policy management. She would not say how much terrorist content – how many posts, images, videos etc – is removed from Facebook.

    ‘‘The 99 per cent and 83 per cent that are removed are pretty impressive on the surface but the question is: ‘Are we talking about 1000 videos or 10,000, or 100,000?’,’’ says Seamus Hughes, deputy director of the program on extremism at George Washington University. ‘‘What’s glaringly missing are the actual hard numbers.’’

    Attacks on Western targets and sharp criticism from European officials have intensified pressure on Facebook to crack down on terrorist activity. European officials are calling on technology companies to take more responsibility for the content on their networks and to provide more information to authorities that could help them foil or investigate attacks.

    Terrorist groups use popular internet services such as YouTube, Twitter and Facebook to spread propaganda, attract and train new recruits, celebrate terrorist attacks and publicise executions. They also use messaging services to communicate.

    Facebook says it is rooting out and removing extremists’ propaganda and messages by using sophisticated algorithms to mine words, images and videos. Artificial intelligence can’t do the job alone, so Facebook has a team of more than 150, including counterterrorism experts, who are dedicated to tracking and taking down propaganda and other materials.

    It’s also collaborating with fellow technology companies and consulting with researchers to keep pace with the ever-changing social media tactics of the Islamic State and other terror groups.

    Facebook is part of the Global Internet Forum to Counter Terrorism, which was formed in June with companies such as Google, Microsoft and Twitter. The companies share a database of ‘‘hashes’’ – essentially digital fingerprints – to track and take down videos and images that appear on their services.

    Facebook says it has prioritised going after IS and Al Qaeda because it believes they pose the greatest threat globally, but it plans to expand to terrorist content posted by other extremist groups.

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