Two bayesian models for text classification from the information science field were extended and applied to student produced essays both models were calibrated using 462 essays with two score points. Lawrence rudner has done some work with bayesian scoring, and developed a system called betsy (bayesian essay test scoring system) some of his results have been published in print or online, but no commercial system incorporates betsy as yet.
Up to 5 score categories free for non-commercial use betsy was developed by lawrence m rudner, now of the graduate management admission council, formerly with department of measurement, statistics and evaluation, university of maryland, college park, md 20742 with funds from the the us department of education.
Management admission test® (gmat®), became the first large-scale assessment to incorporate automated essay scoring the change was controversial at the time (iowa state daily, 1999 calfee, 2000) though some may still find it controversial, automated essay scoring is now widely accepted as a tool to compliment, but not replace, expert human raters. Mated scoring differences (bridgeman, trapani, & yigal, 2012), and students’ essay structure identification (burstein & marcus, 2003) this study addresses two research questions.
There are several computerized essay-scoring systems: (1) project essay grade (peg), (2) latent semantic analysis (lsa), (3) electronic essay rater (e -rater), (4) bayesian essay test scoring system betsy), and others. Example of such system are peg (project essay grade), intelligent essay assessor, e-rater, and betsy (bayesian essay test scoring system)  e-rater even has been used for grading essay from gmat test with the conformity rate between the grader score and e-rater.
Automated essay scoring using generalized latent semantic analysis d bayesian essay test scoring system (betsy) betsy is a program that classifies text based on trained material and is being developed by lawrence m rudner at the college park of the university of mary.
The odbc driver puts a limit to the essay size that can be handled and also limits speed eventually i would like to convert this to a native b-trieve system (i have not experimented with limits using the newer office xp odbc. Automated essay scoring (aes) is defined as the computer technology that evaluates and scores the written prose (shermis & barrera, 2002 shermis & burstein, 2003 shermis, raymat, & barrera, 2003) aes systems are mainly used to overcome time, cost, reliability, and generalizability issues in.