Prefrontal cortex exhibits multidimensional dynamic encoding during decision-making

MC Aoi, V Mante, JW Pillow - Nature neuroscience, 2020 - nature.com
Recent work has suggested that the prefrontal cortex (PFC) plays a key role in context-
dependent perceptual decision-making. In this study, we addressed that role using a new …

Sparse and simple structure estimation via prenet penalization

K Hirose, Y Terada - psychometrika, 2023 - Springer
We propose a prenet (pr oduct-based e lastic net), a novel penalization method for factor
analysis models. The penalty is based on the product of a pair of elements in each row of the …

[HTML][HTML] Separable factor analysis with applications to mortality data

BK Fosdick, PD Hoff - The annals of applied statistics, 2014 - ncbi.nlm.nih.gov
Human mortality data sets can be expressed as multiway data arrays, the dimensions of
which correspond to categories by which mortality rates are reported, such as age, sex …

On estimation of the noise variance in high dimensional probabilistic principal component analysis

D Passemier, Z Li, J Yao - … of the Royal Statistical Society Series …, 2017 - academic.oup.com
We develop new statistical theory for probabilistic principal component analysis models in
high dimensions. The focus is the estimation of the noise variance, which is an important …

Fast ML estimation for the mixture of factor analyzers via an ECM algorithm

JH Zhao, LH Philip - IEEE transactions on neural networks, 2008 - ieeexplore.ieee.org
In this brief, we propose a fast expectation conditional maximization (ECM) algorithm for
maximum-likelihood (ML) estimation of mixtures of factor analyzers (MFA). Unlike the …

An efficient ECM algorithm for maximum likelihood estimation in mixtures of t-factor analyzers

WL Wang, TI Lin - Computational Statistics, 2013 - Springer
Mixture of t factor analyzers (MtFA) have been shown to be a sound model-based tool for
robust clustering of high-dimensional data. This approach, which is deemed to be one of …

A note on variational Bayesian factor analysis

J Zhao, LH Philip - Neural Networks, 2009 - Elsevier
Existing works on variational bayesian (VB) treatment for factor analysis (FA) model such as
[Ghahramani, Z., & Beal, M.(2000). Variational inference for Bayesian mixture of factor …

Multi-channel factor analysis with common and unique factors

D Ramirez, I Santamaria, LL Scharf… - IEEE Transactions …, 2019 - ieeexplore.ieee.org
This work presents a generalization of classical factor analysis (FA). Each of M channels
carries measurements that share factors with all other channels, but also contains factors …

Automated learning of factor analysis with complete and incomplete data

J Zhao, L Shi - Computational Statistics & Data Analysis, 2014 - Elsevier
In the application of the popular maximum likelihood method to factor analysis, the number
of factors is commonly determined through a two-stage procedure, in which stage 1 performs …

A matrix-free likelihood method for exploratory factor analysis of high-dimensional Gaussian data

F Dai, S Dutta, R Maitra - Journal of Computational and Graphical …, 2020 - Taylor & Francis
This technical note proposes a novel profile likelihood method for estimating the covariance
parameters in exploratory factor analysis of high-dimensional Gaussian datasets with fewer …