Performance variations of the Bayesian model of peer-assessment implemented in OpenAnswer response to modifications of the number of peers assessed and of the quality of the class
The paper presents a study of the performance
variationsoftheBayesianmodelofpeerassessmentimplementedin
OpenAnswer, in terms of the grades prediction accuracy.
OpenAnswer (OA)modelsapeerassessmentsessionasaBayesian
network. For each student, a subnetwork contains variables
describingrelevantaspectsofboththeindividualcognitivestateand
the state of the current assessment session. Subnetworks are
interconnected to each other to obtain the final one. Evidence
propagated through the global network is represented by all the