الباحثون

Yixin Yang

المنشورات 6

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Token-Budgeted Escalation for Financial Document QA: Cost Is Predictable, Benefit Is the Bottleneck

Junru Zhu, Yixin Yang, Xiaoqing Ding وآخرون · 2026

Retrieval-augmented generation systems can route difficult queries to deeper context, but batch deployments must allocate a shared token budget across calls whose costs vary by query. We formulate selective escalation as finite-batch allocation for financial document question answering. Each of 150 FinanceBench questio …

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Stress-Testing Structure-Aware Calibration of Malware Graph Neural Networks under Type Shift

Junru Zhu, Yixin Yang, Xiaoqing Ding وآخرون · 2026

Post-hoc malware calibrators can condition confidence on graph structure, but their structural inputs may leave the support represented by validation data under malware-type shift. We study this risk on MalNet-Tiny by holding out each of four malware types across three seeds, freezing a graph isomorphism network, and f …

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LeaseGuard: Incumbent-Preserving Admission Control for Privileged LLM Agents

Junru Zhu, Yixin Yang, Xiaoqing Ding وآخرون · 2026

Privileged language-model agents can satisfy a new system task by displacing a healthy incumbent that depends on the same file, process, socket, lock, or capacity allocation. This failure arises because execution privilege determines whether an operation can run, not whether the requester may preempt the current resour …

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Residual Community Prototypes Under-Reject Held-Out Malware Families in FCG-MFD

Junru Zhu, Yixin Yang, Xiaoqing Ding وآخرون · 2026

Open-set malware-family recognition must classify known families while rejecting families absent from training. We test whether Louvain-community summaries add rejection information beyond a graph neural network embedding and dimension-matched generic topology. The study uses a deduplicated, conflict-audited FCG-MFD co …

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Partition-Matched Evaluation of Community Features under Distribution Shift in Android Malware Function-Call Graphs

Junru Zhu, Yixin Yang, Xiaoqing Ding وآخرون · 2026

Graph-based Android malware classifiers can lose accuracy under malware-type or family shifts. We test whether mesoscopic organization in function-call graphs provides shift-stable information beyond local degree profiles (LDP), global statistics, lightweight metadata, and size-matched random partitions. Using 15,000 M …

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