News: "SAGrader analyzes sentences and paragraphs, looking for keywords as well as the relationship between terms.
Other programs compare a student's paper with a database of already-scored papers, seeking to assign it a score based on what other similar-quality assignments have received.
Educational Testing Service sells Criterion, which includes the 'e-Rater' used to score GMAT essays. Vantage Learning has IntelliMetric, Maplesoft sells Maple T.A., and numerous other programs are used on a smaller scale. "
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