Search Results for author: Laurent El Ghaoui

Found 18 papers, 7 papers with code

State-driven Implicit Modeling for Sparsity and Robustness in Neural Networks

no code implementations19 Sep 2022 Alicia Y. Tsai, Juliette Decugis, Laurent El Ghaoui, Alper Atamtürk

Implicit models are a general class of learning models that forgo the hierarchical layer structure typical in neural networks and instead define the internal states based on an ``equilibrium'' equation, offering competitive performance and reduced memory consumption.

Data-Driven Reachability analysis and Support set Estimation with Christoffel Functions

no code implementations18 Dec 2021 Alex Devonport, Forest Yang, Laurent El Ghaoui, Murat Arcak

In addition to applying classical Vapnik-Chervonenkis (VC) dimension bound arguments, we apply the PAC-Bayes theorem by leveraging a formal connection between kernelized empirical inverse Christoffel functions and Gaussian process regression models.

Recurrent Neural Network Controllers Synthesis with Stability Guarantees for Partially Observed Systems

1 code implementation8 Sep 2021 Fangda Gu, He Yin, Laurent El Ghaoui, Murat Arcak, Peter Seiler, Ming Jin

Neural network controllers have become popular in control tasks thanks to their flexibility and expressivity.

LEMMA

Data-Driven Reachability Analysis with Christoffel Functions

no code implementations28 Apr 2021 Alex Devonport, Forest Yang, Laurent El Ghaoui, Murat Arcak

We present an algorithm for data-driven reachability analysis that estimates finite-horizon forward reachable sets for general nonlinear systems using level sets of a certain class of polynomials known as Christoffel functions.

Text Analytics for Resilience-Enabled Extreme Events Reconnaissance

no code implementations26 Nov 2020 Alicia Y. Tsai, Selim Gunay, Minjune Hwang, Pengyuan Zhai, Chenglong Li, Laurent El Ghaoui, Khalid M. Mosalam

Post-hazard reconnaissance for natural disasters (e. g., earthquakes) is important for understanding the performance of the built environment, speeding up the recovery, enhancing resilience and making informed decisions related to current and future hazards.

Implicit Graph Neural Networks

1 code implementation NeurIPS 2020 Fangda Gu, Heng Chang, Wenwu Zhu, Somayeh Sojoudi, Laurent El Ghaoui

Graph Neural Networks (GNNs) are widely used deep learning models that learn meaningful representations from graph-structured data.

Graph Learning

FANOK: Knockoffs in Linear Time

1 code implementation15 Jun 2020 Armin Askari, Quentin Rebjock, Alexandre d'Aspremont, Laurent El Ghaoui

We describe a series of algorithms that efficiently implement Gaussian model-X knockoffs to control the false discovery rate on large scale feature selection problems.

feature selection

Implicit Deep Learning

no code implementations17 Aug 2019 Laurent El Ghaoui, Fangda Gu, Bertrand Travacca, Armin Askari, Alicia Y. Tsai

Implicit deep learning prediction rules generalize the recursive rules of feedforward neural networks.

Naive Feature Selection: Sparsity in Naive Bayes

no code implementations23 May 2019 Armin Askari, Alexandre d'Aspremont, Laurent El Ghaoui

We propose a sparse version of naive Bayes, which can be used for feature selection.

feature selection

Theoretically Principled Trade-off between Robustness and Accuracy

8 code implementations24 Jan 2019 Hongyang Zhang, Yaodong Yu, Jiantao Jiao, Eric P. Xing, Laurent El Ghaoui, Michael. I. Jordan

We identify a trade-off between robustness and accuracy that serves as a guiding principle in the design of defenses against adversarial examples.

Adversarial Attack Adversarial Defense +2

Fenchel Lifted Networks: A Lagrange Relaxation of Neural Network Training

1 code implementation20 Nov 2018 Fangda Gu, Armin Askari, Laurent El Ghaoui

In this paper, we introduce a new class of lifted models, Fenchel lifted networks, that enjoy the same benefits as previous lifted models, without suffering a degradation in performance over classical networks.

Greedy Frank-Wolfe Algorithm for Exemplar Selection

2 code implementations6 Nov 2018 Gary Cheng, Armin Askari, Kannan Ramchandran, Laurent El Ghaoui

In this paper, we consider the problem of selecting representatives from a data set for arbitrary supervised/unsupervised learning tasks.

Dictionary Learning

Kernel-based Outlier Detection using the Inverse Christoffel Function

no code implementations18 Jun 2018 Armin Askari, Forest Yang, Laurent El Ghaoui

Outlier detection methods have become increasingly relevant in recent years due to increased security concerns and because of its vast application to different fields.

Outlier Detection

Lifted Neural Networks

no code implementations3 May 2018 Armin Askari, Geoffrey Negiar, Rajiv Sambharya, Laurent El Ghaoui

We describe a novel family of models of multi- layer feedforward neural networks in which the activation functions are encoded via penalties in the training problem.

Robust sketching for multiple square-root LASSO problems

no code implementations30 Oct 2014 Vu Pham, Laurent El Ghaoui, Arturo Fernandez

Many learning tasks, such as cross-validation, parameter search, or leave-one-out analysis, involve multiple instances of similar problems, each instance sharing a large part of learning data with the others.

Concise comparative summaries (CCS) of large text corpora with a human experiment

no code implementations29 Apr 2014 Jinzhu Jia, Luke Miratrix, Bin Yu, Brian Gawalt, Laurent El Ghaoui, Luke Barnesmoore, Sophie Clavier

In this paper we propose a general framework for topic-specific summarization of large text corpora and illustrate how it can be used for the analysis of news databases.

General Classification

Cannot find the paper you are looking for? You can Submit a new open access paper.