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作者:BROWN, PJ
作者单位:Imperial College London; University of London
摘要:In biology, a sequence of binary or polytomous tests is used to identify the population of origin of a specimen. The sequence is controlled by a diagnostic key which specifies the next test to be applied conditional on the responses to the tests so far performed. Provided that at least some tests are free from error for some of the populations, the tests performed serve to eliminate certain populations from contention. This leads to constructing the key by choosing the most useful next test. H...
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作者:CHAN, NN
作者单位:Chinese University of Hong Kong
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作者:FAREWELL, VT
作者单位:Imperial College London; University of London
摘要:A binary variable can specify the incidence of a particular disease, Y = 1 or a lifetime free of the disease, Y = 0. In a study, some subjects have Y = 1 recorded at specified ages. For other subjects, with Y unknown due to incomplete follow-up, the observed follow-up time compared with the usual incidence pattern for the disease gives some information on the possibility that Y = 0. A model for this situation is proposed which combines a logistic relationship for the probability of incidence a...
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作者:STEPHENS, MA
作者单位:McMaster University
摘要:A goodness of fit tests for the extreme value distribution was presented based on the empirical distribution function statistics W2, U2 and A2. Asymptotic percentage points were given for each of the 3 statistics and for the 3 cases where one or both of the parameters of the distribution must be estimated from the data. Slight modifications of the calculated statistics were given to enable the points to be used with small samples.
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作者:STRAUSS, D
作者单位:University of California System; University of California Riverside
摘要:If balls are dropped randomly and independently into a number of cells arranged on a line, or on a circle, the occupied cells will form into unconnected runs. The number r of runs could be used as a test statistic for aggregation. In this note the distribution of r is derived and its asymptotic normality established.