1 code implementation • 9 Aug 2024 • Tianyu Xie, Frederick A. Matsen IV, Marc A. Suchard, Cheng Zhang
Reconstructing the evolutionary history relating a collection of molecular sequences is the main subject of modern Bayesian phylogenetic inference.
no code implementations • 18 Feb 2024 • Marius Brusselmans, Luiz Max Carvalho, Samuel L. Hong, Jiansi Gao, Frederick A. Matsen IV, Andrew Rambaut, Philippe Lemey, Marc A. Suchard, Gytis Dudas, Guy Baele
Modern phylogenetics research is often performed within a Bayesian framework, using sampling algorithms such as Markov chain Monte Carlo (MCMC) to approximate the posterior distribution.
1 code implementation • 11 Oct 2023 • Will Dumm, Mary Barker, William Howard-Snyder, William S. DeWitt, Frederick A. Matsen IV
In many situations, it would be useful to know not just the best phylogenetic tree for a given data set, but the collection of high-quality trees.
2 code implementations • 3 Nov 2022 • Mathieu Fourment, Christiaan J. Swanepoel, Jared G. Galloway, Xiang Ji, Karthik Gangavarapu, Marc A. Suchard, Frederick A. Matsen IV
Gradients of probabilistic model likelihoods with respect to their parameters are essential for modern computational statistics and machine learning.
1 code implementation • 16 Apr 2022 • Cheng Zhang, Frederick A. Matsen IV
Bayesian phylogenetic inference is currently done via Markov chain Monte Carlo (MCMC) with simple proposal mechanisms.
1 code implementation • 21 Mar 2022 • Duncan K. Ralph, Frederick A. Matsen IV
Next generation sequencing of B cell receptor (BCR) repertoires has become a ubiquitous tool for understanding the antibody-mediated immune response: it is now common to have large volumes of sequence data coding for both the heavy and light chain subunits of the BCR.
2 code implementations • 24 Apr 2020 • Duncan K. Ralph, Frederick A. Matsen IV
In this paper we introduce a method that uses evolutionary information from the family of related sequences that share a naive ancestor to predict the affinity of each resulting antibody for its antigen.
1 code implementation • 27 Jun 2019 • Amrit Dhar, Duncan K. Ralph, Vladimir N. Minin, Frederick A. Matsen IV
Statistical phylogenetic methods are often used to model the mutational dynamics of BCR sequence data, but these techniques do not consider all the complexities associated with B cell diversification such as the V(D)J rearrangement process.
Methodology Genomics Applications
no code implementations • ICLR 2019 • Cheng Zhang, Frederick A. Matsen IV
Bayesian phylogenetic inference is currently done via Markov chain Monte Carlo with simple mechanisms for proposing new states, which hinders exploration efficiency and often requires long runs to deliver accurate posterior estimates.
1 code implementation • 28 Nov 2018 • Mathieu Fourment, Andrew F. Magee, Chris Whidden, Arman Bilge, Frederick A. Matsen IV, Vladimir N. Minin
The marginal likelihood of a model is a key quantity for assessing the evidence provided by the data in support of a model.
1 code implementation • 28 May 2018 • Cheng Zhang, Vu Dinh, Frederick A. Matsen IV
Phylogenetic tree inference using deep DNA sequencing is reshaping our understanding of rapidly evolving systems, such as the within-host battle between viruses and the immune system.
1 code implementation • NeurIPS 2018 • Cheng Zhang, Frederick A. Matsen IV
Probability estimation is one of the fundamental tasks in statistics and machine learning.
Applications
1 code implementation • 29 Aug 2017 • William S. DeWitt III, Luka Mesin, Gabriel D. Victora, Vladimir N. Minin, Frederick A. Matsen IV
Modern biological techniques enable very dense genetic sampling of unfolding evolutionary histories, and thus frequently sample some genotypes multiple times.
3 code implementations • ICML 2017 • Vu Dinh, Arman Bilge, Cheng Zhang, Frederick A. Matsen IV
Hamiltonian Monte Carlo (HMC) is an efficient and effective means of sampling posterior distributions on Euclidean space, which has been extended to manifolds with boundary.
3 code implementations • 24 Nov 2015 • Chris Whidden, Frederick A. Matsen IV
The subtree prune-and-regraft (SPR) distance metric is a fundamental way of comparing evolutionary trees.
Data Structures and Algorithms Populations and Evolution