Trend towards fewer animal tests continues
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چکیده
منابع مشابه
Upward Trend in Land Values Continues
During the early years of the 1981-87 decline in Indiana land values, there were reports of decreasing numbers of sales and increasing amounts of land for sale. This situation was reversed about 1987 and continues today as indicated by a majority of Purdue land values survey respondents who believe there is less land on the market now than a year ago and that sales have picked up. The same or l...
متن کاملAppendix: Mann-Kendall Trend Tests
Kendall Rank Correlation Let (X1, Y1), · · · , (Xn, Yn) be a bivariate random sample of size n. The Pearson correlation coefficient provides an optimal measure of the degree of association between the X’s and the Y ’s when the sample is drawn from a bivariate normal distribution. The Pearson correlation coefficient is reasonably robust for many other distributions as well. The Kendall correlati...
متن کاملTowards Using Fewer Features for Text Classification
Text classification or categorization is a conventional classification problem applied to the text domain. In the cases when statistical classification methods are used, an important research issue is the selection of features from the training texts, each of which is hence treated as a feature vector. In this paper, we propose an approach for feature selection in text classification tasks, bas...
متن کاملScience-based Test Case Design - Better Coverage, Fewer Tests
This chapter describes an approach to test case design using a proven statistical method known as Design of Experiments. Benefits and costs quantified by a study comparing effectiveness of a manual test case design approach to effectiveness of DoE-based test case selection methods are described. In the interest of balance we discuss counter-arguments and limitations. We illustrate use of this m...
متن کاملTests for Trend: A Simulation Study
In this study we use the wavelet analysis to construct a test
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ژورنال
عنوان ژورنال: Nature
سال: 1990
ISSN: 0028-0836,1476-4687
DOI: 10.1038/346503c0