Search Results for author: Hien D. Nguyen

Found 10 papers, 1 papers with code

Ontology-based Solution for Building an Intelligent Searching System on Traffic Law Documents

no code implementations26 Jan 2023 Vuong T. Pham, Hien D. Nguyen, Thinh Le, Binh Nguyen, Quoc Hung Ngo

In this paper, an ontology-based approach is used to organize the knowledge base of legal documents in road traffic law.

Non-asymptotic oracle inequalities for the Lasso in high-dimensional mixture of experts

no code implementations22 Sep 2020 TrungTin Nguyen, Hien D. Nguyen, Faicel Chamroukhi, Geoffrey J. McLachlan

Mixture of experts (MoE) has a well-principled finite mixture model construction for prediction, allowing the gating network (mixture weights) to learn from the predictors (explanatory variables) together with the experts' network (mixture component densities).

feature selection Model Selection +1

Regularized Estimation and Feature Selection in Mixtures of Gaussian-Gated Experts Models

no code implementations12 Sep 2019 Faïcel Chamroukhi, Florian Lecocq, Hien D. Nguyen

Mixtures-of-Experts models and their maximum likelihood estimation (MLE) via the EM algorithm have been thoroughly studied in the statistics and machine learning literature.

Clustering feature selection +1

Approximate Bayesian computation via the energy statistic

1 code implementation14 May 2019 Hien D. Nguyen, Julyan Arbel, Hongliang Lü, Florence Forbes

Furthermore, we propose a consistent V-statistic estimator of the energy statistic, under which we show that the large sample result holds, and prove that the rejection ABC algorithm, based on the energy statistic, generates pseudo-posterior distributions that achieves convergence to the correct limits, when implemented with rejection thresholds that converge to zero, in the finite sample setting.

Partial Evaluation of Logic Programs in Vector Spaces

no code implementations28 Nov 2018 Chiaki Sakama, Hien D. Nguyen, Taisuke Sato, Katsumi Inoue

In this paper, we introduce methods of encoding propositional logic programs in vector spaces.

Model-Based Clustering and Classification of Functional Data

no code implementations1 Mar 2018 Faicel Chamroukhi, Hien D. Nguyen

FDA is the data analysis paradigm in which the individual data units are functions (e. g., curves, surfaces), rather than simple vectors.

Classification Clustering +2

An Introduction to the Practical and Theoretical Aspects of Mixture-of-Experts Modeling

no code implementations12 Jul 2017 Hien D. Nguyen, Faicel Chamroukhi

Due to the probabilistic nature of MoE models, we propose the maximum quasi-likelihood (MQL) estimator as a method for estimating MoE model parameters from data, and we provide conditions under which MQL estimators are consistent and asymptotically normal.

Clustering

An Introduction to MM Algorithms for Machine Learning and Statistical

no code implementations12 Nov 2016 Hien D. Nguyen

MM (majorization--minimization) algorithms are an increasingly popular tool for solving optimization problems in machine learning and statistical estimation.

BIG-bench Machine Learning

A Universal Approximation Theorem for Mixture of Experts Models

no code implementations11 Feb 2016 Hien D. Nguyen, Luke R Lloyd-Jones, Geoffrey J. McLachlan

The mixture of experts (MoE) model is a popular neural network architecture for nonlinear regression and classification.

General Classification regression

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