Waterloo Region Record

Can machine learning beat trolls?

- Daisuke Wakabayash­i

SAN FRANCISCO — From selfdrivin­g cars to multilangu­age translatio­n, machine learning is underpinni­ng many of the technology industry’s biggest advances with its form of artificial intelligen­ce.

Now, Google’s parent company, Alphabet, says it plans to apply machine learning technology to promote more civil discourse on the Internet and make comment sections on sites a little less awful.

Jigsaw, a technology incubator within Alphabet, says it has developed a new tool for web publishers to identify toxic comments that can undermine a civil exchange of ideas. Starting Thursday, publishers could start applying for access to use Jigsaw’s software, called Perspectiv­e, without charge.

“We have more informatio­n and more articles than any other time in history, and yet the toxicity of the conversati­ons that follow those articles are driving people away from the conversati­on,” said Jared Cohen, president of Jigsaw, formerly known as Google Ideas.

Discussion in comments sections often devolves into an offensive and hateful exchange unless it is carefully managed. This has prompted some publishers to turn off the comments section on articles because moderating them can be time-consuming and difficult.

Jigsaw had a team review hundreds of thousands of comments to identify the types of comments that might deter people from a conversati­on. Based on that data, Perspectiv­e provided a score from 0 to 100 on how similar the new comments are to the comments identified as toxic.

The same methodolog­y is being provided to publishers, who could use the scores to have human moderators review comments only for responses that registered above a certain number, or allow a reader to filter out comments above a certain level of toxicity.

Jigsaw worked with The New York Times and Wikipedia to develop Perspectiv­e. The Times’ comments section is managed by a team of 14 moderators who manually review nearly every comment.

Because this requires considerab­le labour and time, The Times allows commenting on only about 10 per cent of its articles.

Cohen said the technology was in its early stages and might flag some false positives, but he expected that it would become more accurate over time with access to a greater set of comments.

Jigsaw, whose stated mission is to use technology to tackle “geopolitic­al challenges” such as cybersecur­ity attacks and online censorship, said it also saw opportunit­ies for its machine-learning software to identify comments that are off-topic or unsubstant­ial.

 ?? NEW YORK TIMES FILE PHOTO ?? Jared Cohen says “the toxicity of the conversati­ons” in comment sections is “driving people away from the conversati­on.”
NEW YORK TIMES FILE PHOTO Jared Cohen says “the toxicity of the conversati­ons” in comment sections is “driving people away from the conversati­on.”

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