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How do we know a program does what it claims to do? After clustering Android apps by their description topics, we identify outliers in each cluster with respect to their API usage. A "weather" app that sends messages thus becomes an anomaly; likewise, a "messaging" app would typically not be expected to access the current location. Applied on a set of(More)
Modern test case generation techniques can automatically achieve high code coverage. If they operate on the unit level, they run the risk of generating inputs infeasible in reality, which, when causing failures, are painful to identify and eliminate. Running a unit test generator on five open source Java programs, we found that all of the 181 reported(More)
Search-based testing has been successfully applied to generate complex sequences of events for graphical user interfaces (GUIs), but typically relies on simple heuristics or random values for data widgets like text boxes. This may greatly reduce the effectiveness of test generation for applications which expect specific input values to be entered in their(More)
für deren Anregungen wir ebenfalls sehr dankbar sind. Ziel Ziel ist es zum einen, die Zeit zu minimieren, die benötigt wird um sich domänenspezifisches Wissen bezüglich der Aufgabe anzueignen. Zum anderen jedoch, und viel wichtiger, zeigen sich die Studierenden bei Verwendung eines Spiels als Implementierungsziel besonders motiviert. Der Sinn der(More)
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