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Junyu Xuan

2 papers indexed

openalexJournal of Artificial Intelligence Research2026-07-23

Hierarchical Reinforcement Learning with Optimal Level Synchronization Based on Flow-Based Deep Generative Model

JaeYoon Kim, Junyu Xuan, Christy Liang, Farookh Khadeer Hussain

High-dimensional state and action spaces com- bined with sparse reward structures in reinforcement learning (RL) environments typically require advanced control architec- tures. Hierarchical Reinforcement Learning (HRL) demonstrates superior performance compared to atomic RL appr…

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arxivcs.LGcs.AI2026-07-11

How Query Visibility Changes KV-Cache Compression Rankings: A Matched-Budget Audit

Daming Luo, Christy Liang, Junyu Xuan

KV-cache compression methods are predominantly evaluated with the query appended to the context before compression -- a query-aware protocol. Yet the economic case for a compressed KV cache is reuse: compress a document once, answer many future questions against it. In that deplo…

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