SENECA – Simulation of Algorithms for the Selection of Web Services for Compositions

Empirical Validation of MoDe4SLA; Approach for Managing Service Compositions

“…They do not provide information on the relation between the different services, but merely return individual service performance. For evaluating our MoDe4SLA approach, we extend the implementation of an existing simulator -SENECA [22] -with generating impact models and with an analyzer module (cf. Fig.…”

MONITORING SERVICE COMPOSITIONS IN MoDe4SLA - Design of Validation

“…The latter applies when it brings stakeholders closer to their goal, i.e., when the approach points to services causing bad performance of the composition. As basis for both approaches we extend and adopt SENECA (Jaeger and Rojec-Goldmann, 2005), a simulator for selecting services in a composition. In its current state, SENECA provides the means to generate random composition structures based on the workflow language patterns by (van der Aalst et al, 2003).…”

Managing dependency relations in inter-organizational models

“…Furthermore, our implementation provides necessary analysis of the compositions and event logs, and it creates the impact and feedback trees. For the simulation part we adapt and extend SENECA [62], an existing simulation environment for composite services.…”

“…Based on this schema, compositions can result in a flat sequence of services, or contain nested structures forming a more sophisticated execution plan. There are seven basic executions patterns [62] chosen from the workflow patterns by Aalst et al [1]. The number of services incorporated in the composition is determined by the user.…”

“…Originally, this function is used to perform simulations for optimizing QoS of service compositions [62]. We extend SENECA with the possibility of SLA violation at runtime by implementing some randomization.…”