Abstract: Twitter is a useful tool for effectively tracking and managing crisis-related incidents. However, due to many irrelevant features in textual data, the problem of high dimensionality arises, ...

Abstract: Based on the introduction of the simple selection sort algorithm, this paper analyzes in detail two bidirectional selection sort algorithm design ideas, gives individually the algorithm ...

HUMANS HAVE never been immune from the pressures of natural selection. Throughout the history of the species circumstances have arisen to give individuals with certain beneficial mutations an ...

Applying new analytic methods to nearly 16,000 ancient genomes reveals natural selection has acted on hundreds, not dozens, of genes in West Eurasia over the last 10,000 years. More than half of the ...