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We assume there is a slight difference in the average value of the gene expression for a group of genes between two strata/time periods. There is no prior knowledge on which genes where the gene expression differs between the two strata. We test out the power of a large number of test statistics in order to identify whether the observed difference between the averages is significant. Secondly, ...

Elementary arguments show that a tree or forest is determined (up to isomorphism) by binary matroids defined using the adjacency matrix.

An automatic classifier of questions in terms of their expected answer type is a desirable component of many question-answering systems. It eliminates the manual labour and the lack of portability of classifying them semi-automatically. We explore the performance of several learning algorithms (SVM, neural networks, boosting) based on two purely lexical feature sets on a dataset of almost 2000 ...