Search Results for author: Ludovic Denoyer

Found 48 papers, 20 papers with code

Learning Information Spread in Content Networks

no code implementations20 Dec 2013 Cédric Lagnier, Simon Bourigault, Sylvain Lamprier, Ludovic Denoyer, Patrick Gallinari

We introduce a model for predicting the diffusion of content information on social media.

Learning States Representations in POMDP

no code implementations20 Dec 2013 Gabriella Contardo, Ludovic Denoyer, Thierry Artieres, Patrick Gallinari

We propose to deal with sequential processes where only partial observations are available by learning a latent representation space on which policies may be accurately learned.

Deep Sequential Neural Network

no code implementations2 Oct 2014 Ludovic Denoyer, Patrick Gallinari

Instead of considering global transformations, like in classical multilayer networks, this model allows us for learning a set of local transformations.

Representation Learning for cold-start recommendation

no code implementations22 Dec 2014 Gabriella Contardo, Ludovic Denoyer, Thierry Artieres

Representations for both users and items are computed from the observed ratings and used for prediction.

Collaborative Filtering Representation Learning

Reinforced Decision Trees

no code implementations5 May 2015 Aurélia Léon, Ludovic Denoyer

In order to speed-up classification models when facing a large number of categories, one usual approach consists in organizing the categories in a particular structure, this structure being then used as a way to speed-up the prediction computation.

Sequential Cost-Sensitive Feature Acquisition

no code implementations13 Jul 2016 Gabriella Contardo, Ludovic Denoyer, Thierry Artières

We propose a reinforcement learning based approach to tackle the cost-sensitive learning problem where each input feature has a specific cost.

reinforcement-learning Reinforcement Learning (RL) +1

Multi-view Generative Adversarial Networks

no code implementations7 Nov 2016 Mickaël Chen, Ludovic Denoyer

Most related studies focus on the classification point of view and assume that all the views are available at any time.

Density Estimation General Classification

Options Discovery with Budgeted Reinforcement Learning

no code implementations21 Nov 2016 Aurélia Léon, Ludovic Denoyer

We consider the problem of learning hierarchical policies for Reinforcement Learning able to discover options, an option corresponding to a sub-policy over a set of primitive actions.

reinforcement-learning Reinforcement Learning (RL)

Learning Time/Memory-Efficient Deep Architectures with Budgeted Super Networks

1 code implementation CVPR 2018 Tom Veniat, Ludovic Denoyer

We propose to focus on the problem of discovering neural network architectures efficient in terms of both prediction quality and cost.

Fader Networks: Manipulating Images by Sliding Attributes

3 code implementations1 Jun 2017 Guillaume Lample, Neil Zeghidour, Nicolas Usunier, Antoine Bordes, Ludovic Denoyer, Marc'Aurelio Ranzato

This paper introduces a new encoder-decoder architecture that is trained to reconstruct images by disentangling the salient information of the image and the values of attributes directly in the latent space.

Attribute

A Meta-Learning Approach to One-Step Active Learning

no code implementations26 Jun 2017 Gabriella Contardo, Ludovic Denoyer, Thierry Artieres

More specifically, we consider a pool-based setting, where the system observes all the examples of the dataset of a problem and has to choose the subset of examples to label in a single shot.

Active Learning Meta-Learning

Word Translation Without Parallel Data

19 code implementations ICLR 2018 Alexis Conneau, Guillaume Lample, Marc'Aurelio Ranzato, Ludovic Denoyer, Hervé Jégou

We finally describe experiments on the English-Esperanto low-resource language pair, on which there only exists a limited amount of parallel data, to show the potential impact of our method in fully unsupervised machine translation.

Cross-Lingual Word Embeddings Translation +4

Unsupervised Machine Translation Using Monolingual Corpora Only

15 code implementations ICLR 2018 Guillaume Lample, Alexis Conneau, Ludovic Denoyer, Marc'Aurelio Ranzato

By learning to reconstruct in both languages from this shared feature space, the model effectively learns to translate without using any labeled data.

Sentence Translation +1

Multi-View Data Generation Without View Supervision

1 code implementation ICLR 2018 Mickaël Chen, Ludovic Denoyer, Thierry Artières

We assume that the distribution of the data is driven by two independent latent factors: the content, which represents the intrinsic features of an object, and the view, which stands for the settings of a particular observation of that object.

Fader Networks:Manipulating Images by Sliding Attributes

no code implementations NeurIPS 2017 Guillaume Lample, Neil Zeghidour, Nicolas Usunier, Antoine Bordes, Ludovic Denoyer, Marc'Aurelio Ranzato

This paper introduces a new encoder-decoder architecture that is trained to reconstruct images by disentangling the salient information of the image and the values of attributes directly in the latent space.

Attribute

Phrase-Based & Neural Unsupervised Machine Translation

15 code implementations EMNLP 2018 Guillaume Lample, Myle Ott, Alexis Conneau, Ludovic Denoyer, Marc'Aurelio Ranzato

Machine translation systems achieve near human-level performance on some languages, yet their effectiveness strongly relies on the availability of large amounts of parallel sentences, which hinders their applicability to the majority of language pairs.

NMT Sentence +2

Spatio-Temporal Neural Networks for Space-Time Series Forecasting and Relations Discovery

no code implementations23 Apr 2018 Ali Ziat, Edouard Delasalles, Ludovic Denoyer, Patrick Gallinari

We introduce a dynamical spatio-temporal model formalized as a recurrent neural network for forecasting time series of spatial processes, i. e. series of observations sharing temporal and spatial dependencies.

Epidemiology Time Series +2

Phrase-Based \& Neural Unsupervised Machine Translation

no code implementations EMNLP 2018 Guillaume Lample, Myle Ott, Alexis Conneau, Ludovic Denoyer, Marc{'}Aurelio Ranzato

Machine translation systems achieve near human-level performance on some languages, yet their effectiveness strongly relies on the availability of large amounts of parallel sentences, which hinders their applicability to the majority of language pairs.

Denoising NMT +3

Multiple-Attribute Text Style Transfer

3 code implementations1 Nov 2018 Sandeep Subramanian, Guillaume Lample, Eric Michael Smith, Ludovic Denoyer, Marc'Aurelio Ranzato, Y-Lan Boureau

The dominant approach to unsupervised "style transfer" in text is based on the idea of learning a latent representation, which is independent of the attributes specifying its "style".

Attribute Disentanglement +3

Stochastic Adaptive Neural Architecture Search for Keyword Spotting

1 code implementation16 Nov 2018 Tom Véniat, Olivier Schwander, Ludovic Denoyer

The problem of keyword spotting i. e. identifying keywords in a real-time audio stream is mainly solved by applying a neural network over successive sliding windows.

Keyword Spotting Neural Architecture Search

Multiple-Attribute Text Rewriting

no code implementations ICLR 2019 Guillaume Lample, Sandeep Subramanian, Eric Smith, Ludovic Denoyer, Marc'Aurelio Ranzato, Y-Lan Boureau

The dominant approach to unsupervised "style transfer" in text is based on the idea of learning a latent representation, which is independent of the attributes specifying its "style".

Attribute Disentanglement +2

Unsupervised Object Segmentation by Redrawing

1 code implementation NeurIPS 2019 Mickaël Chen, Thierry Artières, Ludovic Denoyer

Object segmentation is a crucial problem that is usually solved by using supervised learning approaches over very large datasets composed of both images and corresponding object masks.

Object Segmentation +2

EDUCE: Explaining model Decisions through Unsupervised Concepts Extraction

no code implementations28 May 2019 Diane Bouchacourt, Ludovic Denoyer

Therefore, we propose a new self-interpretable model that performs output prediction and simultaneously provides an explanation in terms of the presence of particular concepts in the input.

Sentiment Analysis text-classification +1

Unsupervised Question Answering by Cloze Translation

1 code implementation ACL 2019 Patrick Lewis, Ludovic Denoyer, Sebastian Riedel

We approach this problem by first learning to generate context, question and answer triples in an unsupervised manner, which we then use to synthesize Extractive QA training data automatically.

Natural Questions NMT +2

Binary Stochastic Representations for Large Multi-class Classification

no code implementations24 Jun 2019 Thomas Gerald, Aurélia Léon, Nicolas Baskiotis, Ludovic Denoyer

Different models based on the notion of binary codes have been proposed to overcome this limitation, achieving in a sublinear inference complexity.

Classification General Classification +1

Large Memory Layers with Product Keys

8 code implementations NeurIPS 2019 Guillaume Lample, Alexandre Sablayrolles, Marc'Aurelio Ranzato, Ludovic Denoyer, Hervé Jégou

In our experiments we consider a dataset with up to 30 billion words, and we plug our memory layer in a state-of-the-art transformer-based architecture.

Language Modelling

Learning Dynamic Author Representations with Temporal Language Models

1 code implementation11 Sep 2019 Edouard Delasalles, Sylvain Lamprier, Ludovic Denoyer

By conditioning language models with author and temporal vector states, we are able to leverage the latent dependencies between the text contexts.

Information Retrieval Language Modelling +1

EDUCE: Explaining model Decision through Unsupervised Concepts Extraction

no code implementations25 Sep 2019 Diane Bouchacourt, Ludovic Denoyer

Therefore, we propose a new self-interpretable model that performs output prediction and simultaneously provides an explanation in terms of the presence of particular concepts in the input.

Sentiment Analysis text-classification +1

Efficient Continual Learning with Modular Networks and Task-Driven Priors

2 code implementations ICLR 2021 Tom Veniat, Ludovic Denoyer, Marc'Aurelio Ranzato

Finally, we introduce a new modular architecture, whose modules represent atomic skills that can be composed to perform a certain task.

Continual Learning

On Anytime Learning at Macroscale

1 code implementation17 Jun 2021 Lucas Caccia, Jing Xu, Myle Ott, Marc'Aurelio Ranzato, Ludovic Denoyer

Practitioners have then to decide how to allocate their computational budget in order to obtain the best performance at any point in time.

Language Modelling Learning Theory

SaLinA: Sequential Learning of Agents

1 code implementation15 Oct 2021 Ludovic Denoyer, Alfredo De la Fuente, Song Duong, Jean-Baptiste Gaya, Pierre-Alexandre Kamienny, Daniel H. Thompson

SaLinA is a simple library that makes implementing complex sequential learning models easy, including reinforcement learning algorithms.

reinforcement-learning Reinforcement Learning (RL)

State of the Art of User Simulation approaches for conversational information retrieval

no code implementations10 Jan 2022 Pierre Erbacher, Laure Soulier, Ludovic Denoyer

Conversational Information Retrieval (CIR) is an emerging field of Information Retrieval (IR) at the intersection of interactive IR and dialogue systems for open domain information needs.

Decision Making Information Retrieval +4

Can I see an Example? Active Learning the Long Tail of Attributes and Relations

no code implementations11 Mar 2022 Tyler L. Hayes, Maximilian Nickel, Christopher Kanan, Ludovic Denoyer, Arthur Szlam

Using this framing, we introduce an active sampling method that asks for examples from the tail of the data distribution and show that it outperforms classical active learning methods on Visual Genome.

Active Learning

Temporal Abstractions-Augmented Temporally Contrastive Learning: An Alternative to the Laplacian in RL

no code implementations21 Mar 2022 Akram Erraqabi, Marlos C. Machado, Mingde Zhao, Sainbayar Sukhbaatar, Alessandro Lazaric, Ludovic Denoyer, Yoshua Bengio

In reinforcement learning, the graph Laplacian has proved to be a valuable tool in the task-agnostic setting, with applications ranging from skill discovery to reward shaping.

Continuous Control Contrastive Learning +1

Interactive Query Clarification and Refinement via User Simulation

no code implementations31 May 2022 Pierre Erbacher, Ludovic Denoyer, Laure Soulier

When users initiate search sessions, their queries are often unclear or might lack of context; this resulting in inefficient document ranking.

Document Ranking Information Retrieval +2

Regularized Soft Actor-Critic for Behavior Transfer Learning

no code implementations27 Sep 2022 Mingxi Tan, Andong Tian, Ludovic Denoyer

Existing imitation learning methods mainly focus on making an agent effectively mimic a demonstrated behavior, but do not address the potential contradiction between the behavior style and the objective of a task.

Continuous Control Imitation Learning +1

Building a Subspace of Policies for Scalable Continual Learning

1 code implementation18 Nov 2022 Jean-Baptiste Gaya, Thang Doan, Lucas Caccia, Laure Soulier, Ludovic Denoyer, Roberta Raileanu

We introduce Continual Subspace of Policies (CSP), a new approach that incrementally builds a subspace of policies for training a reinforcement learning agent on a sequence of tasks.

Continual Learning

Learning Computational Efficient Bots with Costly Features

no code implementations18 Aug 2023 Anthony Kobanda, Valliappan C. A., Joshua Romoff, Ludovic Denoyer

Deep reinforcement learning (DRL) techniques have become increasingly used in various fields for decision-making processes.

Computational Efficiency D4RL +1

Policy Diversity for Cooperative Agents

no code implementations28 Aug 2023 Mingxi Tan, Andong Tian, Ludovic Denoyer

In this work, we propose a method called Moment-Matching Policy Diversity to alleviate this problem.

Multi-agent Reinforcement Learning

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