919 resultados para number of leaves


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Mode of access: Internet.

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A report was issued for each of the fifty states, for Puerto Rico, Guam, Virgin Islands, American Samoa, Canal Zone, and for the U.S. Summary.

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Caption title.

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Note by Bertram Dobell asserting that the author's real name was Church.

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Reply to Louis Hue Girardin's "Pulaski vindicated from an unsupported charge inconsiderately or malignantly introduced in Judge Johnson's Sketches of the life and correspondence of Major Gen. Nathaniel Greene."

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"Answer to the strictures of Mr. T. Falconer": and "Mr. Falconer's reply to Mr. Greenhow's answer, with Mr. Greenhow's rejoinder".

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We consider the problem of assessing the number of clusters in a limited number of tissue samples containing gene expressions for possibly several thousands of genes. It is proposed to use a normal mixture model-based approach to the clustering of the tissue samples. One advantage of this approach is that the question on the number of clusters in the data can be formulated in terms of a test on the smallest number of components in the mixture model compatible with the data. This test can be carried out on the basis of the likelihood ratio test statistic, using resampling to assess its null distribution. The effectiveness of this approach is demonstrated on simulated data and on some microarray datasets, as considered previously in the bioinformatics literature. (C) 2004 Elsevier Inc. All rights reserved.