3 papers
q-bio.QM2020
Multiplicative Decomposition of Heterogeneity in Mixtures of Continuous Distributions
Abraham Nunes, Martin Alda, Thomas Trappenberg
A system's heterogeneity (\textit{diversity}) is the effective size of its event space, and can be quantified using the Rényi family of indices (also known as Hill numbers in ecolo…
stat.ML2019
Representational Rényi heterogeneity
Abraham Nunes, Martin Alda, Timothy Bardouille +1
A discrete system's heterogeneity is measured by the Rényi heterogeneity family of indices (also known as Hill numbers or Hannah--Kay indices), whose units are {the numbers equival…
q-bio.QM2018
The Importance of Constraint Smoothness for Parameter Estimation in Computational Cognitive Modeling
Abraham Nunes, Alexander Rudiuk
Psychiatric neuroscience is increasingly aware of the need to define psychopathology in terms of abnormal neural computation. The central tool in this endeavour is the fitting of c…