Thimo Schulze

In human computation systems, humans and computers work together to solve hard problems. Many of these systems use crowdsourcing marketplaces to recruit workers. However, the task selection process of crowdsourcing workers is still unclear. We therefore outline this process and propose a structural model showing the criteria that workers use to cho...

Crowdsourcing is an umbrella term for a variety of approaches that tap into the potential of a large and open crowd of people. So far, there is no systematic understandmg of the processes used to source and aggregate contributions from the crowd. In phcular, crowdsourcing organizations shiving to acheve a specific goal should be able to evaluate th...

In the last years, crowdsourcing has emerged as a new approach for outsourcing work to a large number of human workers in the form of an open call. Amazon's Mechanical Turk (MTurk) enables requesters to efficiently distribute micro tasks to an unknown workforce which selects and processes them for small financial rewards. While worker behavior and...

Trust is essential for most social and business networks in the web, and determining local trust values between two unfamiliar users is an important issue. However, many existing approaches to calculating these values have limitations in various constellations or network characteristics. We therefore propose an approach that interprets trust as pro...

Software as a Service solutions are available for certain business applications. However, many companies still rely on complex legacy applications for business-critical tasks. They cannot easily be accessed via the Internet and integrated into service-oriented landscapes. Re-programming or adaption of these legacy applications is both time-consumin...