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...ynamic adaptations. Some approaches address this issue by providing verification techniques for testing properties of the performed adaptation (e.g., model checking in [2] and web services testbed in =-=[3]-=-). As for a precise definition of self-adaptivity, this is still a debated question, due to the wide spectrum of the involved features. In our opinion, a simple, rather deep, characterization is the o...

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... with programmable behavior. By using Genesis2 [7], which allows to extend testbeds with plugins, we are able to implement scenarios which behave flexible enough to test diverse adaptation mechanisms =-=[11]-=-. Human-Provided Services [13] close the gap between SBS and humans desiring to provide their skills and expertise as a service in a collaborative process. Instead of a strict predefined process flow ...

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...n of resources, in this way making a human cloud possible. There is a considerable amount of work conducted on adaptation and more interestingly on self-adaptation strategies. For example, authors in =-=[16]-=- have presented an architecture that includes a self-adaptation framework for service-oriented collaboration systems. The part that this work relates to, is their approach on identifying worker misbeh...

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...ice descriptions in terms of functional and non-functional properties to support the discovery process; and demonstrate how to enable run-time adaptations in the Genesis hosting environment (see also =-=[12]-=-). 3.2 Interaction Monitoring and HPS Profiling Interaction Model. Avatars are not statically bound to clients but are discovered at run-time. Thus, interactions are ad-hoc and dynamically performed w...

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... a framework which integrates agreements into service-oriented crowdsourcing platforms. The prerequisite is a monitoring infrastructure that updates a crowd-based resource model. In our previous work =-=[4]-=-, [5], westudiedamonitoringandbehavioradaptationarchitecture serving as the basis for the presented agreement management. Here, we focus on an agreement model combined with an adaptation approach for ...

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... a framework which integrates agreements into service-oriented crowdsourcing platforms. The prerequisite is a monitoring infrastructure that updates a crowd-based resource model. In our previous work =-=[4]-=-, [5], we studied a monitoring and behavior adaptation architecture serving as the basis for the presented agreement management. Here, we focus on an agreement model combined with an adaptation approa...

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... gathered through simulations. 7.1 SOA testbed environment Our evaluations were gathered using the features of the Genesis2 framework [17] and infrastructure services (e.g., logging) as introduced in =-=[26]-=-. Genesis2 has a management interface and a controllable runtime to deploy, simulate, and evaluate SOA designs and implementations. A collection of extensible elements for these environments are avail...

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... and to allow predicting violations of SLAs (e.g. [14, 49, 78]) and created a decision support for service adaptation by monitoring run-time service discovery, preventing runtime SLA violations (e.g. =-=[18, 79,80]-=-). Moreover, S-Cube developed technologies for service provisioning, adaptation and monitoring, and incorporated them into approaches for enabling self-* characteristics of an integrated service infra...

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...ges addressed in this work relate to building and managing an automated crowd platform. There is only a few approaches towards integrating SLAs into crowdsourcing. In one of our previous works at TUW =-=[57]-=- we introduced an approach to include human tasks as available on the current crowd platforms into Web Service Level Agreements (WSLA). The interested reader is referred to the results of that Interna...