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Wenwen Si

4 accepted papers

2026

Conformal Constrained Policy Optimization for Cost-Effective LLM Agents

AAAI 2026technical

While large language models (LLMs) have recently made tremendous progress towards solving challenging AI problems, they have done so at increasingly steep computational and API costs. We propose a novel strategy where we combine multiple LLM models with varying cost/accuracy tradeoffs in an agentic

Cited by 0SourcePDFScholar
2024

PAC Prediction Sets Under Label Shift

ICLR 2024poster

Prediction sets capture uncertainty by predicting sets of labels rather than individual labels, enabling downstream decisions to conservatively account for all plausible outcomes. Conformal inference algorithms construct prediction sets guaranteed to contain the true label with high probability. The…

2023

Angelic Patches for Improving Third-Party Object Detector Performance

CVPR 2023poster

Deep learning models have shown extreme vulnerability to simple perturbations and spatial transformations. In this work, we explore whether we can adopt the characteristics of adversarial attack methods to help improve perturbation robustness for object detection. We study a class of realistic objec…

2018

Interactive Robot Knowledge Patching Using Augmented Reality

ICRA 2018poster

We present a novel Augmented Reality (AR) approach, through Microsoft HoloLens, to address the challenging problems of diagnosing, teaching, and patching interpretable knowledge of a robot. A Temporal And-Or graph (T-AOG) of opening bottles is learned from human demonstration and programmed to the r…

Cited by 83SourceScholar