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Probabilistic Models for Estimation of Random and Pseudo-Random Test Length
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作者 向东 魏道政 陈世松 《Journal of Computer Science & Technology》 SCIE EI CSCD 1992年第2期164-174,共11页
A new probabilistic testability measure is presented to ease test length analyses of random testing and pseudorandom testing.The testability measure given in this paper is oriented to signal conflict of reconvergent f... A new probabilistic testability measure is presented to ease test length analyses of random testing and pseudorandom testing.The testability measure given in this paper is oriented to signal conflict of reconvergent fanouts.Test length analyses in this paper are based on a hard fault set,calculations of which are practicable and simple.Experimental results have been obtained to show the accuracy of this test length analyser in comparison with that of Savir,Chin and McCluskey,and Wunderlich by using a pseudorandom test generator combined with exhaustive fault simulation. 展开更多
关键词 TEST probabilistic Models for estimation of Random and Pseudo-Random Test Length LENGTH TEST
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Improving Retrieval Performance by Region Constraints and Relevance Feedback 被引量:1
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作者 TaoWang YongRui Jia-GuangSun 《Journal of Computer Science & Technology》 SCIE EI CSCD 2004年第3期413-422,共10页
In this paper, region features and relevance feedback are used to improve the performance of CBIR. Unlike existing region-based approaches where either individual regions are used or only simple spatial layout is mode... In this paper, region features and relevance feedback are used to improve the performance of CBIR. Unlike existing region-based approaches where either individual regions are used or only simple spatial layout is modeled, the proposed approach simultaneously models both region properties and their spatial relationships in a probabilistic framework. Furthermore, the retrieval performance is improved by an adaptive filter based relevance feedback. To illustrate the performance of the proposed approach, extensive experiments have been carried out on a large heterogeneous image collection with 17,000 images, which render promising results on a wide variety of queries. 展开更多
关键词 content-based image retrieval (CBIR) region matching probabilistic weight estimation relevance feedback adaptive filter
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