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Haozhen Zheng

3 accepted papers

2026

Spatio-Temporal LLM: Reasoning about Environments and Actions

ICML 2026poster

Despite significant recent progress of Multimodal Large Language Models (MLLMs), current MLLMs are challenged by "spatio-temporal" prompts, i.e., prompts that refer to 1) the entirety of an environment encoded in a point cloud that the MLLM should consider; and simultaneously also refer to 2) action…

Cited by 0SourceScholar
2025

Cache-of-Thought: Master-Apprentice Framework for Cost-Effective Vision Language Model Reasoning

EMNLP 2025

Vision Language Models (VLMs) have achieved remarkable success in a wide range of vision applications of increasing complexity and scales, yet choosing the right VLM model size involves a trade-off between response quality and cost. While smaller VLMs are cheaper to run, they typically produce respo

2024

UOUO: Uncontextualized Uncommon Objects for Measuring Knowledge Horizons of Vision Language Models

EMNLP 2024main

Smaller-scale Vision-Language Models (VLMs) often claim to perform on par with larger models in general-domain visual grounding and question-answering benchmarks while offering advantages in computational efficiency and storage. However, their ability to handle rare objects, which fall into the long…