Search Results for author: Jason Hartford

Found 14 papers, 7 papers with code

Propensity Score Alignment of Unpaired Multimodal Data

no code implementations2 Apr 2024 Johnny Xi, Jason Hartford

Multimodal representation learning techniques typically rely on paired samples to learn common representations, but paired samples are challenging to collect in fields such as biology where measurement devices often destroy the samples.

Causal Inference Representation Learning

Object-centric architectures enable efficient causal representation learning

1 code implementation29 Oct 2023 Amin Mansouri, Jason Hartford, Yan Zhang, Yoshua Bengio

Causal representation learning has showed a variety of settings in which we can disentangle latent variables with identifiability guarantees (up to some reasonable equivalence class).

Disentanglement Object

Sequential Underspecified Instrument Selection for Cause-Effect Estimation

1 code implementation11 Feb 2023 Elisabeth Ailer, Jason Hartford, Niki Kilbertus

Instrumental variable (IV) methods are used to estimate causal effects in settings with unobserved confounding, where we cannot directly experiment on the treatment variable.

DynGFN: Towards Bayesian Inference of Gene Regulatory Networks with GFlowNets

1 code implementation NeurIPS 2023 Lazar Atanackovic, Alexander Tong, Bo wang, Leo J. Lee, Yoshua Bengio, Jason Hartford

In this paper we leverage the fact that it is possible to estimate the "velocity" of gene expression with RNA velocity techniques to develop an approach that addresses both challenges.

Bayesian Inference Causal Discovery

GFlowNets for AI-Driven Scientific Discovery

no code implementations1 Feb 2023 Moksh Jain, Tristan Deleu, Jason Hartford, Cheng-Hao Liu, Alex Hernandez-Garcia, Yoshua Bengio

However, in order to truly leverage large-scale data sets and high-throughput experimental setups, machine learning methods will need to be further improved and better integrated in the scientific discovery pipeline.

Efficient Exploration Experimental Design

UNSAT Solver Synthesis via Monte Carlo Forest Search

1 code implementation22 Nov 2022 Chris Cameron, Jason Hartford, Taylor Lundy, Tuan Truong, Alan Milligan, Rex Chen, Kevin Leyton-Brown

We introduce Monte Carlo Forest Search (MCFS), a class of reinforcement learning (RL) algorithms for learning policies in {tree MDPs}, for which policy execution involves traversing an exponential-sized tree.

reinforcement-learning Reinforcement Learning (RL)

Weakly Supervised Representation Learning with Sparse Perturbations

1 code implementation2 Jun 2022 Kartik Ahuja, Jason Hartford, Yoshua Bengio

We show that if the perturbations are applied only on mutually exclusive blocks of latents, we identify the latents up to those blocks.

Representation Learning

Properties from Mechanisms: An Equivariance Perspective on Identifiable Representation Learning

no code implementations ICLR 2022 Kartik Ahuja, Jason Hartford, Yoshua Bengio

These results suggest that by exploiting inductive biases on mechanisms, it is possible to design a range of new identifiable representation learning approaches.

Representation Learning

The Perils of Learning Before Optimizing

no code implementations18 Jun 2021 Chris Cameron, Jason Hartford, Taylor Lundy, Kevin Leyton-Brown

Typically, learning the prediction model used to generate the optimization problem and solving that problem are performed in two separate stages.

Stochastic Optimization

Exemplar Guided Active Learning

no code implementations NeurIPS 2020 Jason Hartford, Kevin Leyton-Brown, Hadas Raviv, Dan Padnos, Shahar Lev, Barak Lenz

The challenge is that we are not informed which labels are common and which are rare, and the true label distribution may exhibit extreme skew.

Active Learning Word Sense Disambiguation

Valid Causal Inference with (Some) Invalid Instruments

no code implementations19 Jun 2020 Jason Hartford, Victor Veitch, Dhanya Sridhar, Kevin Leyton-Brown

The technique is simple to apply and is "black-box" in the sense that it may be used with any instrumental variable estimator as long as the treatment effect is identified for each valid instrument independently.

Causal Inference valid

Deep Models of Interactions Across Sets

1 code implementation ICML 2018 Jason Hartford, Devon R Graham, Kevin Leyton-Brown, Siamak Ravanbakhsh

In experiments, our models achieved surprisingly good generalization performance on this matrix extrapolation task, both within domains (e. g., new users and new movies drawn from the same distribution used for training) and even across domains (e. g., predicting music ratings after training on movies).

Collaborative Filtering Matrix Completion +2

Deep IV: A Flexible Approach for Counterfactual Prediction

1 code implementation ICML 2017 Jason Hartford, Greg Lewis, Kevin Leyton-Brown, Matt Taddy

Counterfactual prediction requires understanding causal relationships between so-called treatment and outcome variables.

counterfactual

Counterfactual Prediction with Deep Instrumental Variables Networks

no code implementations30 Dec 2016 Jason Hartford, Greg Lewis, Kevin Leyton-Brown, Matt Taddy

We are in the middle of a remarkable rise in the use and capability of artificial intelligence.

counterfactual

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