Search Results for author: Tin D. Nguyen

Found 8 papers, 2 papers with code

On Regularization and Inference with Label Constraints

no code implementations8 Jul 2023 Kaifu Wang, Hangfeng He, Tin D. Nguyen, Piyush Kumar, Dan Roth

Prior knowledge and symbolic rules in machine learning are often expressed in the form of label constraints, especially in structured prediction problems.

Structured Prediction

Are you using test log-likelihood correctly?

no code implementations1 Dec 2022 Sameer K. Deshpande, Soumya Ghosh, Tin D. Nguyen, Tamara Broderick

Test log-likelihood is commonly used to compare different models of the same data or different approximate inference algorithms for fitting the same probabilistic model.

Bayesian Inference

Many processors, little time: MCMC for partitions via optimal transport couplings

1 code implementation23 Feb 2022 Tin D. Nguyen, Brian L. Trippe, Tamara Broderick

In MCMC samplers of continuous random variables, Markov chain couplings can overcome bias.

Clustering

Measuring the robustness of Gaussian processes to kernel choice

no code implementations11 Jun 2021 William T. Stephenson, Soumya Ghosh, Tin D. Nguyen, Mikhail Yurochkin, Sameer K. Deshpande, Tamara Broderick

We demonstrate in both synthetic and real-world examples that decisions made with a GP can exhibit non-robustness to kernel choice, even when prior draws are qualitatively interchangeable to a user.

Gaussian Processes

Independent versus truncated finite approximations for Bayesian nonparametric inference

no code implementations NeurIPS Workshop ICBINB 2020 Tin D. Nguyen, Jonathan H. Huggins, Lorenzo Masoero, Lester Mackey, Tamara Broderick

Bayesian nonparametric models based on completely random measures (CRMs) offers flexibility when the number of clusters or latent components in a data set is unknown.

Image Denoising

Approximate Cross-Validation for Structured Models

1 code implementation NeurIPS 2020 Soumya Ghosh, William T. Stephenson, Tin D. Nguyen, Sameer K. Deshpande, Tamara Broderick

But this existing ACV work is restricted to simpler models by the assumptions that (i) data across CV folds are independent and (ii) an exact initial model fit is available.

Sentence

PAC-Bayes Tree: weighted subtrees with guarantees

no code implementations NeurIPS 2018 Tin D. Nguyen, Samory Kpotufe

We present a weighted-majority classification approach over subtrees of a fixed tree, which provably achieves excess-risk of the same order as the best tree-pruning.

Computational Efficiency General Classification

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