1 code implementation • 1 Mar 2024 • Alfred Nilsson, Klas Wijk, Sai Bharath Chandra Gutha, Erik Englesson, Alexandra Hotti, Carlo Saccardi, Oskar Kviman, Jens Lagergren, Ricardo Vinuesa, Hossein Azizpour
Feature selection is a crucial task in settings where data is high-dimensional or acquiring the full set of features is costly.
1 code implementation • 2 Oct 2023 • Oskar Kviman, Ricky Molén, Jens Lagergren
We present VBPI-Mixtures, an algorithm designed to enhance the accuracy of phylogenetic posterior distributions, particularly for tree-topology and branch-length approximations.
no code implementations • 23 Dec 2022 • Oskar Kviman, Hazal Koptagel, Harald Melin, Jens Lagergren
Over the years, sequential Monte Carlo (SMC) and, equivalently, particle filter (PF) theory has gained substantial attention from researchers.
1 code implementation • 30 Sep 2022 • Oskar Kviman, Ricky Molén, Alexandra Hotti, Semih Kurt, Víctor Elvira, Jens Lagergren
In this work, we also demonstrate that increasing the number of mixture components improves the latent-representation capabilities of the VAE on both image and single-cell datasets.
1 code implementation • 1 Mar 2022 • Hazal Koptagel, Oskar Kviman, Harald Melin, Negar Safinianaini, Jens Lagergren
The exponential size of the tree space is, unfortunately, a substantial obstacle for Bayesian phylogenetic inference using Markov chain Monte Carlo based methods since these rely on local operations.
1 code implementation • 22 Feb 2022 • Oskar Kviman, Harald Melin, Hazal Koptagel, Víctor Elvira, Jens Lagergren
In variational inference (VI), the marginal log-likelihood is estimated using the standard evidence lower bound (ELBO), or improved versions as the importance weighted ELBO (IWELBO).