Siyuan Jiang

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We describe DUA-Forensics, our open-source Java-bytecode program analysis and instrumentation system built on top of Soot. DUA-Forensics has been in development for more than six years and has supported multiple research projects on efficient monitoring, test-suite augmentation, fault localization, symbolic execution, and change-impact analysis. Three core(More)
“Change Impact Analysis” is the process of determining the consequences of a modification to software. In theory, change impact analysis should be done during software maintenance, to make sure changes do not introduce new bugs. Many approaches and techniques are proposed to help programmers do change impact analysis automatically. However, it is still an(More)
The very preterm birth of an infant is physiologically traumatic for the infant and physiologically and psychologically traumatic for the parents. The manner of care delivery in the first few days and weeks of the infant's life plays a large role in determining the impact of that trauma. For optimal outcomes parents need to be integrated into the care(More)
Program slicing is a popular but imprecise technique for identifying which parts of a program affect or are affected by a particular value. A major reason for this imprecision is that slicing reports all program statements possibly affected by a value, regardless of how relevant to that value they really are. In this paper, we introduce quantitative slicing(More)
Sensitivity analysis is used in many fields to determine how different parts of a system respond to variations in stimuli. Softwaredevelopment tasks, such as change-impact analysis, can also benefit from sensitivity analysis. In this paper, we present SENSA, a novel dynamic-analysis technique and tool that uses sensitivity analysis and execution(More)
Recently code transformations or tailored fitness functions are adopted to achieve coverage (structural or logical criterion) driven testing to ensure software reliability. However, some internal threats like negative impacts on underlying search strategies or local maximum exist. So we propose a dynamic symbolic execution (DSE) based framework combined(More)
This paper presents a practical approach to parallelize the test data generation algorithm by which computing resources can be fully used. The test data generation approach that we are using is based on the dynamic symbolic execution (concolic testing). The basic idea of parallelizing the algorithm is to distribute analysis processes of different paths to(More)
User stories are descriptions of functionality that a software user needs. They play an important role in determining which software requirements and bug fixes should be handled and in what order. Developers elicit user stories through meetings with customers. But user story elicitation is complex, and involves many passes to accommodate shifting and(More)