Author

Bangwei Guo

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Preprint Aug 2026

TopoAgent: A Structure-Aware Perception-to-Reasoning Framework for Diagram-to-Graph Topology Extraction with Large Vision-Language Models

Diagram-to-graph topology extraction aims to extract a graph of entities and their connections from a structural diagram. This task remains challenging for current vision-language models because it requires both fine-grained perceptual grounding and topology-aware reasoning with global consistency. We present TopoBench...

Bang-Wei Guo, Xujiang Zhao, Yan-Chi Liu et al. · 0 citations

Preprint Aug 2026

OpenPM: Auditable Point-in-Time Evaluation for LLM Portfolio-Management Agents

This work presents OpenPM, an auditable point-in-time evaluation framework for LLM portfolio-management agents, and builds a reference agent named the tiered allocator, where typed analysts score candidates, a constructor LLM proposes weights, and a deterministic critic guarantees feasibility.

Xinying Cai, Ming-Hao Guo, Jiahe Liu et al. · 1 citation