4 papers
Optimal Transport Aggregation for Distributed Mixture-of-Experts
Faïcel Chamroukhi, Nhat Thien Pham
This paper considers the setting in which local Mixture-of-experts (MoE) models are fitted independently on distributed datasets and must be combined into a single global MoE model…
Functional mixture-of-experts for classification
Nhat Thien Pham, Faicel Chamroukhi
We develop a mixtures-of-experts (ME) approach to the multiclass classification where the predictors are univariate functions. It consists of a ME model in which both the gating ne…
Functional Mixtures-of-Experts
Faïcel Chamroukhi, Nhat Thien Pham, Van Hà Hoang +1
We consider the statistical analysis of heterogeneous data for prediction in situations where the observations include functions, typically time series. We extend the modeling with…
Sum-of-square-of-rational-function based representations of positive semidefinite polynomial matrices
Thanh-Hieu Le, Nhat-Thien Pham
The paper proves sum-of-square-of-rational-function based representations (shortly, sosrf-based representations) of polynomial matrices that are positive semidefinite on some speci…