Search Results - "Steel, M. A"

Recovering evolutionary trees under a more realistic model of sequence evolution by LOCKHART, P. J, STEEL, M. A, HENDY, M. D, PENNY, D

“…We report a new transformation, the LogDet, that is consistent for sequences with differing nucleotide composition and that have arisen under simple but…”
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General Time-Reversible Distances with Unequal Rates across Sites: Mixing Γ and Inverse Gaussian Distributions with Invariant Sites by Waddell, Peter J, Steel, M.A

“…A series of new results useful to the study of DNA sequences using Markov models of substitution are presented with proofs. General time-reversible distances…”
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Confidence in evolutionary trees from biological sequence data by Steel, M. A, Lockhart, P. J, Penny, D

“…The reliable construction of evolutionary trees from nucleotide sequences often depends on randomization tests such as the bootstrap and PTP (cladistic…”
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A covariotide model explains apparent phylogenetic structure of oxygenic photosynthetic lineages by Lockhart, P J, Steel, M A, Barbrook, A C, Huson, D H, Charleston, M A, Howe, C J

“…The aims of the work were (1) to develop statistical tests to identify whether substitution takes place under a covariotide model in sequences used for…”
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A Discrete Fourier Analysis for Evolutionary Trees by HENDY, M. D, PENNY, D, STEEL, M. A

“…Discrete Fourier transformations have recently been developed to model the evolution of two-state characters (the Cavender/Farris model). We report here the…”
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Simplified radar mapping equations for terrain correction of space-borne SAR images by Rees, W. G., Steel, A. M.

“…Correction of a space-borne Synthetic Aperture Radar (SAR) image for the effects of terrain distortion requires the use of mapping equations that relate the…”
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Radar backscatter coefficients and snow detectability for upland terrain in Scotland by Rees, W. G., Steel, A. M.

“…This paper presents a quantitative investigation of the relative importance of variations in incidence angle, land cover type, month of the year, and the…”
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Distributions of Tree Comparison Metrics—Some New Results by Steel, Mike A., Penny, David

“…Measures of dissimilarity (metrics) for comparing trees are important tools in the quantitative analysis of evolutionary trees, but many of their properties…”
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Phylogenetic super-networks from partial trees by Huson, D.H., Dezulian, T., Klopper, T., Steel, M.A.

“…In practice, one is often faced with incomplete phylogenetic data, such as a collection of partial trees or partial splits. This paper poses the problem of…”
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On the Variational Distance of Two Trees by Steel, M. A., Székely, L. A.

“…A widely studied model for generating sequences is to "evolve" them on a tree according to a symmetric Markov process. We prove that model trees tend to be…”
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Loss of information in genetic distances by STEEL, M. A, HENDY, M. D, PENNY, D

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Pure adaptive search for finite global optimization by ZABINSKY, Z. B, WOOD, G. R, STEEL, M. A, BARITOMPA, W. P

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A few logs suffice to build (almost) all trees: Part II by Erdös, Péter L., Steel, Michael A., Székely, LászlóA., Warnow, Tandy J.

“…Inferring evolutionary trees is an interesting and important problem in biology, but one that is computationally difficult as most associated optimization…”
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Reconstructing trees when sequence sites evolve at variable rates by Steel, M A, Székely, L A, Hendy, M D

“…For a sequence of colors independently evolving on a tree under a simple Markov model, we consider conditions under which the tree can be uniquely recovered…”
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How molecules evolve in eubacteria by Lockhart, P J, Huson, D, Maier, U, Fraunholz, M J, Van De Peer, Y, Barbrook, A C, Howe, C J, Steel, M A

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Parsimony Can Be Consistent by Steel, Michael A., Hendy, Michael D., Penny, David

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Classifying and counting linear phylogenetic invariants for the Jukes-Cantor model by Steel, M A, Fu, Y X

“…Linear invariants are useful tools for testing phylogenetic hypotheses from aligned DNA/RNA sequences, particularly when the sites evolve at different rates…”
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Trees from Languages and Genes are Very Similar by Penny, David, Watson, Elizabeth E., Steel, Michael A.

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Gene duplication and the evolution of photosynthetic reaction center proteins by Lockhart, Peter J., Steel, Michael A., Larkum, Anthony W.D.

“…We investigate the evolutionary relationships between photosynthetic reaction center proteins (D1, D2, L and M) and demonstrate that the pattern of nucleotide…”
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Finding a maximum compatible tree is NP-hard for sequences and trees by Hamel, A.M., Steel, M.A.

“…We show that the following two related problems arising in phylogenetic analysis are NP-hard: 1. (i) given a collection of aligned 2-state sequences, find the…”
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