arXiv AI By Tanish Kher, Sarvesh DK, Abedelkadir Asi, Sparsha Chennarayapatna Sundaresh, Dezhi Hong

TRACER: Trajectory-Aware Tool Retrieval for LLM Agents

Read the original on arXiv AI →

TRACER is a retrieval front‑end that indexes tool‑call sequences in a trie and uses a learned blend of empirical and contextual priors to rank tool continuations. In a mixed retail‑and‑telecom environment, it boosts GPT‑5.4’s tool‑selection accuracy by 4.7 points while cutting input tokens per step by 80%, exposing only 5 of 128 tools. Across six environments and four models, TRACER improves tool‑selection accuracy in 21 of 24 model‑environment pairs, with average gains of 6 to 10 points, and matches full‑registry success with 61% fewer tokens per step in autonomous execution.

Machine-generated by The Flow from the publisher's headline and feed description — not written or checked by a human. The full article lives at arXiv AI.

arXiv AI
Jun 8

TRACE: Trajectory Reasoning through Adaptive Cross-Step Evidence Aggregation for LLM Agents

arXiv:2606. 07054v1 Announce Type: cross Abstract: Autonomous LLM agents can pursue hidden malicious objectives through sequences of individually benign actions, making sabotage difficult to detect using standard trajectory-level monitoring.

By Vijitha Mittapalli, Shreyaa Jayant Dani, Satya Srujana Pilli, Snigdha Ansu, Mohammadreza Teymoorianfard, Franck Dernoncourt, Hongjie Chen, Yu Wang, Ryan A. Rossi, Nesreen K. Ahmed
arXiv Computation and Language
5d ago

TraceSpec: Understanding and Improving Speculative Decoding for LLM Agents

TraceSpec is a framework that links trajectory evaluation with adaptive draft training to improve speculative decoding in large language model agents. It introduces a dynamic execution strategy combined with fixed‑prefix replay and provides a new corpus (TraceSpec‑Traj) of 10,000 training and 2,500 test states covering browsing and software engineering tasks. Experiments show that TraceSpec’s state‑conditioned draft allocation boosts replay throughput by 12.5%–22.6% and increases accepted length by up to 10.0% compared to fixed‑turn supervision.

By Jihao Zhao, Shuaishuai Zu, Pengfei Li, Biao Qin, Guanghuan Fang, Ben Feng, Baochuan Yang
arXiv AI
Sep 3

UniToolCall: Unifying Tool-Use Representation, Data, and Evaluation for LLM Agents

UniToolCall introduces a unified framework for tool-use in large language model agents, standardizing toolset construction, dataset generation, and evaluation. The framework aggregates over 22,000 tools and creates a hybrid training corpus of more than 390,000 instances by combining ten public datasets with synthetically generated, structurally controlled trajectories. It models diverse interaction patterns—single‑hop vs. multi‑hop, single‑turn vs. multi‑turn, serial vs. parallel execution—and adds an Anchor Linkage mechanism to enforce cross‑turn dependencies, while converting seven public benchmarks into a common Query–Action–Observation–Answer format for fine‑grained evaluation.

By Yijuan Liang, Xinghao Chen, Yifan Ge, Ziyi Wu, Hao Wu, Changyu Zeng, Wei Xing, Xiaoyu Shen
Hugging Face Trending Papers
Jun 22

Self-Evolution for Multi-Turn Tool-Calling Agents via Divergence-Point Preference Learning

Multi-turn tool-using agents must coordinate long-horizon tool sequences while tracking dialogue state and policy constraints. Existing approaches often separate inference-time orchestration from parameter-level learning, leaving tool selection weakly structured and preference updates vulnerable to train--deployment prompt mismatch.