Concept · 18 episode(s)

Trajectory Quality

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Definition

Trajectory quality is a measure of how useful an agent’s rollouts are for training or evaluation — not just whether they succeed, but whether they succeed for the right reasons, with informative intermediate steps. Selecting on quality, not just outcome, is one of the levers that distinguishes good RL pipelines.

Episodes covering this

  1. 187
    An 8-Billion Agent That Beats Models 80 Times Its Size By Looking Things Up
    An AI agent for treatment reasoning over a biomedical tool universe
    Gao, Noori, Zhu et al. · Department of Biomedical Informatics·19 min·Jun 30, 2026
  2. 173
    The Free Step-Level Grader Hiding in Every RL Training Run
    Neglected Free Lunch from Post-training: Progress Advantage for LLM Agents
    Oh, Li, Park et al. · University of Wisconsin–Madison·22 min·Jun 25, 2026
  3. 169
    Why Better Bug Reports Can Make AI Coding Agents Worse
    SHERLOC: Structured Diagnostic Localization for Code Repair Agents
    Tamoyan, Narenthiran, Arakelyan et al. · NVIDIA / TU Darmstadt·24 min·Jun 24, 2026
  4. 168
    When Turning Experience Into Code Makes Your AI Agent Dumber
    Metis: Bridging Text and Code Memory for Self-Evolving Agents
    Dai, He, Li et al. · The Chinese University of Hong Kong·27 min·Jun 24, 2026
  5. 166
    A Router That Beats the Frontier Models It Calls
    Sakana Fugu Technical Report
    Tang, Cetin, Xu et al. · Sakana AI·26 min·Jun 23, 2026
  6. 163
    Why Training Only on Perfect Solutions Cripples a Model's Reasoning
    Provable Benefits of RLVR over SFT for Reasoning Models: Learning to Backtrack Efficiently
    Wei, Kim · Princeton University·22 min·Jun 23, 2026
  7. 161
    A Robot That Plays Before You Give It a Job, And Why That Beats Retrying
    Playful Agentic Robot Learning
    Zhang, Ge, Yoo et al. · University of California·19 min·Jun 19, 2026
  8. 156
    Why More Human Demonstrations Made a Computer-Use Agent Worse
    ProCUA-SFT Technical Report
    Jung, Lu, Cui et al. · NVIDIA / University of Washington·20 min·Jun 18, 2026
  9. 155
    Why a Flawless Demo Makes a Worse Computer-Using Agent, And the Fix
    Skill-Guided Continuation Distillation for GUI Agents
    Fan, Yu, Shen et al. · StepFun·22 min·Jun 18, 2026
  10. 154
    How a 7B Model Out-Investigates a 72B One by Choosing What to Look At
    Native Active Perception as Reasoning for Omni-Modal Understanding
    Xing, Xu, Wang et al. · The Chinese University of Hong Kong·21 min·Jun 18, 2026
  11. 151
    Why More Experience Made This AI Agent Worse, And How to Fix It
    Not All Skills Help: Measuring and Repairing Agent Knowledge
    Wang, Zhou, Liang et al. · UNC Chapel Hill·28 min·Jun 16, 2026
  12. 143
    When a Model Notices You Forged Its Own Words, And Why That Breaks Safety Tests
    Prefill Awareness in Large Language Models
    Wang, Mahajan, Africa et al. · Constellation / University of Wisconsin-Madison·24 min·Jun 12, 2026
  13. 142
    Training a Tiny Model to Run the Plumbing Between an Agent and the World
    HarnessBridge: Learnable Bidirectional Controller for LLM Agent Harness
    Wang, Wang, Taylor et al. · University of California·24 min·Jun 12, 2026
  14. 131
    Why Autonomous Research Agents Forget Their Own Lessons, and Arbor's Fix
    Toward Generalist Autonomous Research via Hypothesis-Tree Refinement
    Jin, Hu, Qiu et al. · Renmin University of China·33 min·Jun 11, 2026
  15. 126
    How Coding Agents Can Mine Their Own Failures Into a Self-Targeting Curriculum
    Socratic-SWE: Self-Evolving Coding Agents via Trace-Derived Agent Skills
    Xiao, Jiao, Wang et al. · Shanghai Jiao Tong University·21 min·Jun 09, 2026
  16. 097
    Same Tokens, Same Cost, Wildly Different Results: What Actually Scales in AI Agents
    Scaling Laws for Agent Harnesses via Effective Feedback Compute
    Zhang, Wang, Xu et al. · Harbin Institute of Technology·25 min·May 29, 2026
  17. 086
    Why Frozen-Weight Agents Still Get Worse Over Time
    Your Agents Are Aging Too: Agent Lifespan Engineering for Deployed Systems
    Zhu, Ro, Robertson et al. · The University of Texas at Austin·23 min·May 27, 2026
  18. 021
    Ten Thousand Examples Beat the Full Industrial Pipeline for Search Agents
    OpenSeeker-v2: Pushing the Limits of Search Agents with Informative and High-Difficulty Trajectories
    Du, Ye, Tang et al. · Shanghai Jiao Tong University·14 min·May 06, 2026

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