TY - CHAP Y1 - 2007/// A1 - Palmeri, Maria Carla A1 - De Nicola, Rocco A1 - Massink, Mieke TI - Basic Observables for Probabilistic May Testing N2 - The definition of behavioural preorders over process terms as the maximal (pre-)congruences induced by basic observables has proven to be a useful technique to define various preorders and equivalences in the non-probabilistic setting. In this paper, we consider probabilistic observables to define an observational semantics for a probabilistic process calculus. The resulting pre-congruence is proven to coincide with a probabilistic may preorder, which, in turn, corresponds to a natural probabilistic extension of the may testing preorder of De Nicola and Hennessy. ID - eprints288 UR - http://doi.ieeecomputersociety.org/10.1109/QEST.2007.19 PB - IEEE Computer Society EP - 200 SN - 0-7695-2883-X AV - none T2 - Fourth International Conference on the Quantitative Evaluation of Systems (QEST 2007) SP - 189 ER -