%E Martin Wirsing %E Martin Hofmann %E Axel Rauschmayer %X Rate transition systems (RTS) are a special kind of transition systems introduced for defining the stochastic behavior of processes and for associating continuous-time Markov chains with process terms. The transition relation assigns to each process, for each action, the set of possible futures paired with a measure indicating the rates at which they are reached. RTS have been shown to be a uniform model for providing an operational semantics to many stochastic process algebras. In this paper, we define Uniform Labeled TRAnsition Systems (ULTraS) as a generalization of RTS that can be exploited to uniformly describe also nondeterministic and probabilistic variants of process algebras. We then present a general notion of behavioral relation for ULTraS that can be instantiated to capture bisimulation and trace equivalences for fully nondeterministic, fully probabilistic, and fully stochastic processes. %L eprints271 %D 2010 %A Marco Bernardo %A Rocco De Nicola %A Michele Loreti %S Lecture Notes in Computer Science %R 10.1007/978-3-642-15640-3_3 %B Trustworthly Global Computing (TGC 2010) %T Uniform Labeled Transition Systems for Nondeterministic, Probabilistic, and Stochastic Processes %P 35-56 %I Springer %V 6084