When scoring essays, the e-rater® engine will:
- validate that the features are not only predictive of a readers' score but also have some logical relevance to the writing prompt
- automatically flag responses that are off-topic or inconsistent, so that they can be set aside for review
- combine the scoring features in a statistical model to produce a final score estimate
The e-rater engine is continually being developed and improved, with the aim of extending its ability to model important and challenging aspects of writing proficiency. Ongoing research aims to enhance the e-rater engine capabilities so that it can identify and evaluate the structure of an argument in an essay, as well as assess the creative use of language in student and test-taker writing.