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The test case generation of Cyber-Physical Systems (CPSs) face critical challenges that traditional methods such as Model-Based Testing cannot deal with. As a result, simulation-based testing is one of the most commonly used techniques for testing CPSs despite sometimes being computationally too expensive. This paper proposes a search-based approach which is implemented on top of Non-dominated Sorting...
Test case prioritization is an essential part of test execution systems for large organizations developing software systems in the context that their software versions are released very frequently. They must be tested on a variety of compatible hardware with different configurations to ensure correct functioning of a software version on a compatible hardware. In practice, test case execution must...
Importance sampling (IS) is a change-of-measure technique for speeding up the simulation of rare events in stochastic systems. In this paper, we presented an approach uses Importance Sampling technique for efficient estimation of software reliability via Markov software usage models in statistical testing. By suitable changes of the probabilities of state transitions during test, an iterative method...
Directional listening tests are an integral part of overall psychoacoustic evaluation of spatial rendering systems as well as general audiological evaluation. A new test paradigm is proposed, where, to reduce the effect of mapping bias, a 3D perspective plot of the visual scene is provided to the listener. Both visual and acoustic stimuli are used to evaluate the proposed technique against an approach...
It was an important problem to assessment Capacity of single pile. Several methods to determine axial pile capacity directly based on cone penetration test (CPT) data are presented and evaluated. Based on the SCPTU test results, the authors try to use penetration data to predict the pile side friction and the bearing capacity. The CPT methods, as well as the SCPTU methods, were used to estimate the...
The CTCS Hardware-In-the-Loop Simulation (HILS) system is currently under developing and needs to be tested thoroughly. According to the requirements of concurrency and configurability, a test process model based contract-checking test method (CCTM) is proposed to execute the test verdict on-line. By analyzing several test applications, the test process could be abstracted as a test event chain. And...
Model driven architecture (MDA) provides a more efficient way to software development by giving a higher-level abstraction with standardized model and implementing the automatic transformation among different levels of model or code. By using MDA, not only the development time could be shortened, but the quality of code could be greatly enhanced. In test field, how to decrease the cost of test and...
In order to solve the implementation and maintenance problems of automatic test via filling the gap between test requirements and test programs with models, we developed a novel test execution process modeling method in this paper. The test execution process was abstracted as a test event chain by analyzing several test applications. The model of test execution process is viewed as a composition of...
The lack of test information reuse among different life cycle phases of system results in significant overhead costs to system test. Thus, a common model is needed to bridge and reuse the existing test information between different test phases. In this paper, a metamodel for test information reuse, test exchange metamodel (TEMM), was proposed. As a common model, it covers the possibly widest spectrum...
Traditional test sequence optimization methods for path testing have three problems: 1) fake test results may occur; 2) unnecessary repetitive tests may exist; 2) actual test coverage rate could be low. These problems are because the effects of the faults on the test sequence execution are not considered by traditional methods. To solve these problems, we defined a stochastic combinatorial optimization...
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