Mixed initiative use cases for semi-automated service composition

Semi-automated service composition with mixed initiative interactions, where both user and machine jointly contribute to the creation of composed services, is currently subject to intensive research. In this paper, we give an overview over recent research approaches by presenting three different semi-automated service composition tools. As the main contribution of this paper, we introduce three mixed initiative use cases characteristic for semi-automated composition, which we have extracted and generalized from the presented approaches and then extended. Based on these use cases and additional distinctive properties, we give a qualitative evaluation of the presented approaches.