Search Results for author: Yookoon Park

Found 6 papers, 4 papers with code

A Hierarchical Latent Structure for Variational Conversation Modeling

4 code implementations NAACL 2018 Yookoon Park, Jaemin Cho, Gunhee Kim

To solve the degeneration problem, we propose a novel model named Variational Hierarchical Conversation RNNs (VHCR), involving two key ideas of (1) using a hierarchical structure of latent variables, and (2) exploiting an utterance drop regularization.

Unsupervised Representation Learning via Neural Activation Coding

1 code implementation7 Dec 2021 Yookoon Park, Sangho Lee, Gunhee Kim, David M. Blei

We argue that the deep encoder should maximize its nonlinear expressivity on the data for downstream predictors to take full advantage of its representation power.

Representation Learning Retrieval

Variational Laplace Autoencoders

no code implementations30 Nov 2022 Yookoon Park, Chris Dongjoo Kim, Gunhee Kim

Based on the Laplace approximation of the latent variable posterior, VLAEs enhance the expressiveness of the posterior while reducing the amortization error.

Variational Inference

Normalized Contrastive Learning for Text-Video Retrieval

1 code implementation30 Nov 2022 Yookoon Park, Mahmoud Azab, Bo Xiong, Seungwhan Moon, Florian Metze, Gourab Kundu, Kirmani Ahmed

Cross-modal contrastive learning has led the recent advances in multimodal retrieval with its simplicity and effectiveness.

Contrastive Learning Cross-Modal Retrieval +2

Density Uncertainty Layers for Reliable Uncertainty Estimation

1 code implementation21 Jun 2023 Yookoon Park, David M. Blei

In this paper, we propose a novel criterion for reliable predictive uncertainty: a model's predictive variance should be grounded in the empirical density of the input.

Out-of-Distribution Detection

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