Can a computer grade an essay? Yes, writes Rich Barlow, but not particularly well. And not without algorithmic bias.
Students at Albany School of Humanities wait to board a bus after school on Monday, April 13, 2015, in Albany, N.Y. With standardized English tests set to begin Tuesday in New York schools, some parents are again planning to have their children sit out the exams. . But while I chuckle at this riff on sci-fi lore, it probably doesn’t amuse those haunted by the notion of a real-life Robocalypse, the mass layoffs allegedly bearing down on humanity Terminator-like due to automation.
Both essays scored 4 out of a possible 6, indicating “competent examination of the argument and convey meaning with acceptable clarity.” Here’s the competent clarity with which one of those essays opened: “Invention for precincts has not, and presumably never will be undeniable in the extent to which we inspect the reprover.” It was downhill from there.
That AI graders are suckers for big words is, in a weird way, related to their second flaw: They can be biased against certain groups. The reason? Chinese students got graded up for essay length and sophisticated vocabulary, while getting lower grades on grammar and sentence mechanics. Combined, those results suggested tothat “many students from mainland China were using significant chunks of pre-memorized shell text,” Motherboard reported.
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