3 papers
cs.CL2026
Peak-Then-Collapse and the Four Interface Channels of Knowledge-Graph Tool Use
Tianda Sun, Dimitar Kazakov
We test the standard RLVR tool-use recipe -- GRPO on Qwen2.5-7B-Instruct -- on a deliberately minimal knowledge-graph tool API: four Freebase navigation verbs over Complex WebQuest…
cs.CL2026
Tool-Call Dependency Structure is Linearly Decodable in LLM Agent Residual Streams
Tianda Sun, Dimitar Kazakov
Tool-using LLM agents produce trajectories whose calls form a directed dependency graph: earlier tool outputs supply arguments to later calls. Whether this execution structure is r…
cs.CL2026
Kinship Data Benchmark for Multi-hop Reasoning
Tianda Sun, Dimitar Kazakov
Large language models (LLMs) are increasingly evaluated on their ability to perform multi-hop reasoning, i.e., to combine multiple pieces of information into a coherent inference.…