Search Results for author: Alexander Lin

Found 8 papers, 4 papers with code

An Efficient Algorithm for Clustered Multi-Task Compressive Sensing

1 code implementation30 Sep 2023 Alexander Lin, Demba Ba

This paper considers clustered multi-task compressive sensing, a hierarchical model that solves multiple compressive sensing tasks by finding clusters of tasks that leverage shared information to mutually improve signal reconstruction.

Compressive Sensing

Probabilistic Unrolling: Scalable, Inverse-Free Maximum Likelihood Estimation for Latent Gaussian Models

no code implementations5 Jun 2023 Alexander Lin, Bahareh Tolooshams, Yves Atchadé, Demba Ba

Latent Gaussian models have a rich history in statistics and machine learning, with applications ranging from factor analysis to compressed sensing to time series analysis.

Time Series Time Series Analysis

Word-Level Explanations for Analyzing Bias in Text-to-Image Models

no code implementations3 Jun 2023 Alexander Lin, Lucas Monteiro Paes, Sree Harsha Tanneru, Suraj Srinivas, Himabindu Lakkaraju

We introduce a method for computing scores for each word in the prompt; these scores represent its influence on biases in the model's output.

Sentence

Mixture Model Auto-Encoders: Deep Clustering through Dictionary Learning

1 code implementation10 Oct 2021 Alexander Lin, Andrew H. Song, Demba Ba

State-of-the-art approaches for clustering high-dimensional data utilize deep auto-encoder architectures.

Clustering Deep Clustering +1

Covariance-Free Sparse Bayesian Learning

no code implementations21 May 2021 Alexander Lin, Andrew H. Song, Berkin Bilgic, Demba Ba

The most popular inference algorithms for SBL exhibit prohibitively large computational costs for high-dimensional problems due to the need to maintain a large covariance matrix.

MRI Reconstruction Uncertainty Quantification

Autoregressive Knowledge Distillation through Imitation Learning

2 code implementations EMNLP 2020 Alexander Lin, Jeremy Wohlwend, Howard Chen, Tao Lei

The performance of autoregressive models on natural language generation tasks has dramatically improved due to the adoption of deep, self-attentive architectures.

Imitation Learning Knowledge Distillation +3

Clustering Time Series with Nonlinear Dynamics: A Bayesian Non-Parametric and Particle-Based Approach

no code implementations23 Oct 2018 Alexander Lin, Yingzhuo Zhang, Jeremy Heng, Stephen A. Allsop, Kay M. Tye, Pierre E. Jacob, Demba Ba

We propose a general statistical framework for clustering multiple time series that exhibit nonlinear dynamics into an a-priori-unknown number of sub-groups.

Bayesian Inference Clustering +2

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