You can learn more about Scoring Engine here.
Turnitin Scoring Engine reflects a new approach to writing assessment.
Turnitin Scoring Engine analyzes the lexical, syntactic, and stylistic features of writing, such as word choice and genre conventions, unlike other automated essay scoring programs that rely on simple metrics like word count. Turnitin Scoring Engine discovers the unique, content-based patterns in an existing set of hand-scored essays and learns to replicate that judgment as an accurate, reliable, on-demand assessment of student writing.
To begin using Turnitin Scoring Engine, institutions provide their existing rubrics, along with a seed set of de-identified student essays and reliable existing scores. These texts are analyzed to build a custom scoring model for each new writing context. Turnitin Scoring Engine learns to value the same aspects of writing as the instructors at an institution. Turnitin Scoring Engine also automatically tests itself for reliability by comparing the scores it generates to the instructors’ original scores. When this test is passed, the program is easily embedded into existing institutional assessment environments, ready to score any number of new essays or writing submissions. Each student can receive automated scoring for any number of submissions per assignment or writing task.