منابع مشابه
A quartet of interactions.
When people practice specific tasks –such as playing video games or speaking a second language– does this boost their general cognitive abilities? To what extent are our basic cognitive processes malleable? Are we to accept the hand that nature has dealt us –a short attention span, a fallible memory, a limited perceptual system– or is there hope that, with the right training and dogged persiste...
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Quartet-based phylogeny reconstruction methods, such as Quartet Puzzling, were introduced in the hope that they might be competitive with maximum likelihood methods, without being as computationally intensive. However, despite the numerous quartet-based methods that have been developed, their performance in simulation has been disappointing. In particular, Ranwez and Gascuel, the developers of ...
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Accurate phylogenetic reconstruction methods are inherently computationally heavy and therefore are limited to relatively small numbers of taxa. Supertree construction is the task of amalgamating small trees over partial sets into a big tree over the complete taxa set. The need for fast and accurate supertree methods has become crucial due to the enormous number of new genomic sequences generat...
متن کاملQuartet-net: a quartet-based method to reconstruct phylogenetic networks.
Phylogenetic networks can model reticulate evolutionary events such as hybridization, recombination, and horizontal gene transfer. However, reconstructing such networks is not trivial. Popular character-based methods are computationally inefficient, whereas distance-based methods cannot guarantee reconstruction accuracy because pairwise genetic distances only reflect partial information about a...
متن کاملDetecting Anomalies and Intruders
Brittleness is a well-known problem in expert systems where a conclusion can be made, which human common sense would recognise as impossible e.g. that a male is pregnant. We have extended previous work on prudent expert systems to enable an expert system to recognise when a case is outside its range of experience. We have also used the same technique to detect new patterns of network traffic, s...
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ژورنال
عنوان ژورنال: Canadian Medical Association Journal
سال: 2020
ISSN: 0820-3946,1488-2329
DOI: 10.1503/cmaj.190802