← Search

Prashant Singh

3 accepted papers

2026

Epistemic Uncertainty Quantification for Pre-trained VLMs via Riemannian Flow Matching

ICML 2026poster

Vision-Language Models (VLMs) are typically deterministic in nature and lack intrinsic mechanisms to quantify epistemic uncertainty, which reflects the model’s lack of knowledge or ignorance of its own representations. We theoretically motivate negative log-density of an embedding as a proxy for the…

Cited by 0SourceScholar
2025

Exploiting the Asymmetric Uncertainty Structure of Pre-trained VLMs on the Unit Hypersphere

NeurIPS 2025poster

Vision-language models (VLMs) as foundation models have significantly enhanced performance across a wide range of visual and textual tasks, without requiring large-scale training from scratch for downstream tasks. However, these deterministic VLMs fail to capture the inherent ambiguity and uncertain…

Cited by 0SourceScholar
2024

Adaptive Robust Learning using Latent Bernoulli Variables

ICML 2024poster

We present an adaptive approach for robust learning from corrupted training sets. We identify corrupted and non-corrupted samples with latent Bernoulli variables and thus formulate the learning problem as maximization of the likelihood where latent variables are marginalized. The resulting problem i…