Yahoo Unveils Online Abuse Detector
Economy, Sci & Tech

Yahoo Unveils Online Abuse Detector

A team of researchers at Yahoo Labs have plumbed the depths of their company’s massive comment sections to come up with something that might actually be useful for detecting and eventually curbing rampant online abuse.
Using a first-of-its-kind data set built from offensive article comments flagged by Yahoo editors, the research team was able to develop an algorithm that, according to Technology Review, is the best automated abuse filter built to date.
Most current abuse filters rely on a combination of blacklisted terms, common expressions and syntax clues to catch hate speech online, but the Yahoo team went a step further and applied machine learning to their massive repository of flagged comments.
Using a technique called “word embedding”, which processes words as vectors rather than either simply positive or negative, the Yahoo system can recognize an offensive string of words, even if the individual words are inoffensive on their own.
According to their findings, the system was able to correctly identify abusive language from the same data set about 90% of the time. While the figure is impressive, the ever-changing nature of hate speech means no system—not even a human one—will ever truly be able to know what is offensive 100% of the time.


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