Zijie Lei

2 accepted papers

2026

GraphPlanner: Graph-Based Agentic Routing for LLMs

Tao Feng, Haozhen Zhang, Peixuan Han, Zijie Lei, Jiaxuan You

ICLR 2026poster

LLM routing has achieved promising results in integrating the strengths of di- verse models while balancing efficiency and performance. However, to support more realistic and challenging applications, routing must extend into agentic LLM settings—where task planning, multi-round cooperation among he…

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2026

Speaking Numbers to LLMs: Multi-Wavelet Number Embeddings for Time Series Forecasting

Defu Cao, Zijie Lei, Muyan Weng, Jiao Sun, Yan Liu

IJCAI 2026

Large language models (LLMs) are attractive for context-aware time series forecasting because they can integrate heterogeneous textual signals, yet their discrete, language-oriented tokenization and embedding interfaces are misaligned with continuous numerical values, often harming numerical orderin

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