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Full-Text Articles in Physical Sciences and Mathematics
Prioritizing Test Cases For Regression Testing, Gregg Rothermel, Roland H. Untch, Chengyun Chu, Mary Jean Harrold
Prioritizing Test Cases For Regression Testing, Gregg Rothermel, Roland H. Untch, Chengyun Chu, Mary Jean Harrold
School of Computing: Faculty Publications
Test case prioritization techniques schedule test cases for execution in an order that attempts to increase their effectiveness at meeting some performance goal. Various goals are possible; one involves rate of fault detection - a measure of how quickly faults are detected within the testing process. An improved rate of fault detection during testing can provide faster feedback on the system under test and let software engineers begin correcting faults earlier than might otherwise be possible. One application of prioritization techniques involves regression testing - the retesting of software following modifications; in this context, prioritization techniques can take advantage of …
Restoration And Reconstruction From Overlapping Images For Multi-Image Fusion, Stephen E. Reichenbach, Jing Li
Restoration And Reconstruction From Overlapping Images For Multi-Image Fusion, Stephen E. Reichenbach, Jing Li
School of Computing: Faculty Publications
This paper describes a technique for restoring and reconstructing a scene from overlapping images. In situations where there are multiple, overlapping images of the same scene, it may be desirable to create a single image that most closely approximates the scene, based on the data in all of the available images. For example, successive swaths acquired by NASA’s moderate imaging spectrometer (MODIS) will overlap, particularly at wide scan angles, creating a severe visual artifact in the output image. Resampling the overlapping swaths to produce a more accurate image on a uniform grid requires restoration and reconstruction. The one-pass restoration and …
Empirical Studies Of A Prediction Model For Regression Test Selection, Mary Jean Harrold, David Rosenblum, Gregg Rothermel, Elaine Weyuker
Empirical Studies Of A Prediction Model For Regression Test Selection, Mary Jean Harrold, David Rosenblum, Gregg Rothermel, Elaine Weyuker
School of Computing: Faculty Publications
Regression testing is an important activity that can account for a large proportion of the cost of software maintenance. One approach to reducing the cost of regression testing is to employ a selective regression testing technique that 1) chooses a subset of a test suite that was used to test the software before the modifications, then 2) uses this subset to test the modified software. Selective regression testing techniques reduce the cost of regression testing if the cost of selecting the subset from the test suite together with the cost of running the selected subset of test cases is less …
Hierarchical Ring Network Configuration And Performance Modeling, V. Carl Hamacher, Hong Jiang
Hierarchical Ring Network Configuration And Performance Modeling, V. Carl Hamacher, Hong Jiang
School of Computing: Faculty Publications
Approximate analytical queuing network models for expected message packet delay in 2-level and 3-level hierarchical ring interconnection networks (INs) are developed. A major class of traffic carried by these INs consists of cache line transfers between processor caches and remote memory modules in shared-memory multiprocessors. Such traffic consists of short, fixed-length messages; they can be conveniently transported by the slotted-ring transmission technique which is studied here. The packet delay results derived from the models are shown to be quite accurate when checked against a simulation study. As well as facilitating analysis, the analytical models can be used to determine optimal …