Search Results for author: Arrykrishna Mootoovaloo

Found 4 papers, 3 papers with code

Parameter Inference for Weak Lensing using Gaussian Processes and MOPED

1 code implementation13 May 2020 Arrykrishna Mootoovaloo, Alan F. Heavens, Andrew H. Jaffe, Florent Leclercq

Much larger gains will come with future data, where with MOPED compression, the speed up can be up to a factor of $\sim 10^3$ when the common Limber approximation is used.

Cosmology and Nongalactic Astrophysics

Imbalance Learning for Variable Star Classification

2 code implementations27 Feb 2020 Zafiirah Hosenie, Robert Lyon, Benjamin Stappers, Arrykrishna Mootoovaloo, Vanessa McBride

In this work, we attempt to further improve hierarchical classification performance by applying 'data-level' approaches to directly augment the training data so that they better describe under-represented classes.

BIG-bench Machine Learning Classification +4

Marginal Likelihoods from Monte Carlo Markov Chains

2 code implementations11 Apr 2017 Alan Heavens, Yabebal Fantaye, Arrykrishna Mootoovaloo, Hans Eggers, Zafiirah Hosenie, Steve Kroon, Elena Sellentin

In this paper, we present a method for computing the marginal likelihood, also known as the model likelihood or Bayesian evidence, from Markov Chain Monte Carlo (MCMC), or other sampled posterior distributions.

Computation Cosmology and Nongalactic Astrophysics

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