Modeling a Peer Assessment Framework by Means of a Lazy Learning Approach

Peer-assessment entails, for students, a very beneficial learning activity, from a pedagogical point of view. The peer-evaluation can be performed over a variety of peer-produced resources, the principle being that the more articulated such resource is, the better. Here we focus, in particular, on the automated support to grading open answers, via a peer-evaluation-based approach, which is mediated by the (partial) grading work of the teacher, and produces a (partial, as well) automated grading. We propose to support such automated grading by means of a method based on the K-NN technique. This method is an alternative to a previously studied and implemented one, based on Bayesian Networks. Here we describe the new approach and provide the reader with a preliminary evaluation.