Shubhang Bhatnagar
shubhangb.bsky.social
Shubhang Bhatnagar
@shubhangb.bsky.social
Computer Vision PhD Student @UIUC, Undergrad @iitbombay
📍Urbana, IL 🔗 http://shubhangb97.github.io
5/5 PFML achieves state-of-the-art zero shot image retrieval results on Cars-196, CUB-200-2011, and SOP, outperforming top methods by up to 7.6% Recall@1 under label noise. It’s especially effective in realistic, noisy scenarios.
June 15, 2025 at 6:01 AM
4/5 Proxies in PFML help augment, not replace, sample interactions. The decaying strength of interaction helps ensure proxies stay close to the data they represent, improving alignment and feature quality, unlike prior proxy-based methods where proxies can drift away.
June 15, 2025 at 6:01 AM
3/5 PFML introduces a key change: Interaction strength decays with distance. Distant samples have less influence, so outliers and mislabeled data don't dominate training. This leads to more robust learning in presence of intra-class feature diversity.
June 15, 2025 at 6:01 AM
2/5 Why Potential field based Deep Metric Learning (PFML)?
Unlike triplet/proxy losses that use only a subset of interactions, PFML models all sample interactions at once using the field. PFML preserves more supervision and improves feature quality, even when using noisy labels
June 15, 2025 at 6:01 AM
Thank you!
December 13, 2024 at 2:12 AM
Hi, I would love to be added to it if possible. I am a fourth year PhD student at UIUC working on visual representation learning.
December 12, 2024 at 2:50 AM