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Source arXiv Machine Learning export.arxiv.org Analyst
September 2, 2026 ai_technology research

WHALE: A Simple Recipe for Joint Harness-Weight Optimization

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Overview

arXiv:2609.00196v1 Announce Type: new Abstract: Agent performance depends jointly on the model parameters and the executable harness code that manages context and control flow. Optimizing either component in isolation can leave the system bottlenecked by its frozen counterpart: weight updates can change which harness is effective, while harness updates can change which model capabilities are exposed. Existing joint-adaptation methods optimize weights and textual prompts but leave the broader har

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