College professors grading essays purely by computer - is this legit?
http://katengine.com/collector/he-hist/prompt/MyHistoryLab011/begin
He explained to them that this is an automated system that will actually grade their essays and only if they want an exception will he review their work. He also told them that their work would be used to further train the system - he didn't tell them anything about how to opt out of this if they don't want to. I'm not sure if this is something he is doing himself or something the college is adopting in their classes.
All i've been able to find about this katengine is this document:
http://www.reedpetersen.com/portfolio/pe/pa/writetolearn/download/kat-engine.pdf which makes it seem like a simple latent semantic indexer.
There's another marketing PDF here : http://www.reedpetersen.com/portfolio/pe/pa/writetolearn/download/wtl-faq.pdf
that has a section on their "Intelligent Essay Assessor" which claims it works by checking similarity with some model essays. This seems like a simple LSI model with some added features.
I'm pretty irate about this- i work on machine learning and distributed systems myself and given the state of the art, I just can't fathom how a teacher could responsibly decide that a system like this can actually assign a student a final grade for essay type answers. I'm planning on asking my girlfriend to raise this issue in her class.
So my question is this - does anyone here have any more experience with these kind of essay grading systems - are they actually able to do a reasonable job (and is my indignation overblown), or is this a case of people using poorly understood technology in bad ways that should be protested or at least explained in greater detail to the students.