Incorporating Varying Test Costs and Fault Severities into Test Case Prioritization

Test case prioritization techniques schedule test cases for regression testing in an order that increases their ability to meet some performance goal. One performance goal, rate offault detection, measures how quickly faults are detected within the testing process. In previous work we provided a metric, APFD, for measuring rate of fault detection, and techniques for prioritizing test cases to improve APFD, and reported the results of experiments using those techniques. This metric and these techniques, however, applied only in cases in which test costs and fault severity are uniform. In this paper, we present a new metric for assessing the rate of fault detection of prioritized test cases, that incorporates varying test case and fault costs. We present the results of a case study illustrating the application of the metric. This study raises several practical questions that might arise in applying test case prioritization; we discuss how practitioners could go about answering these questions.

Japanese Ag Training Program Closing Ceremony

What a pleasure it is to be here with you tonight for this year’s closing ceremony for the Japanese Ag Training Program. We have been so delighted to have those of you enrolled in the program studying with us for the past three months. You join the nearly 1,400 Japanese Ag Training Program trainees who have received animal science production, management, and agribusiness training from our faculty since the program began here in 1966, and we are so pleased to have had this opportunity to know and to work with you.

Grain Storage Costs and Rental Rates

Trends in Grain Storage - Commercial grain storage eliminates the need to monitor grain conditions and, hence, offers the peace of mind that unsold grain will remain in condition. There may be a cost trade-off between this reduced storage risk and the cost of on-farm storage.

CLOSING REMARKS - FOURTH VERTEBRATE PEST CONFERENCE

On behalf of the California Vertebrate Pest Committee, which sponsors these conferences, I wish to thank all of the speakers for their contribution to the program and the session chairmen who kept the meeting moving so smoothly. We would like to extend a special thanks to the speakers and participants who have come from other countries to share with us some of their knowledge concerning vertebrate pest problems and their solutions. Hopefully, the acquaintances made here and the exchange of information with our colleagues from distant places will be the beginning of long-lasting friendships and will foster better communications between those with mutual interests.