PORTool improves accuracy and reduces tool calls in multi-tool LLM reasoning by using importance-aware policy optimization on rewarded rollout trees that compare alternative decisions sharing prefixes.
</think> block outlining your thoughts and reasoning in one or two sentences; and (ii) one<tool_call>
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PORTool: Importance-Aware Policy Optimization with Rewarded Tree for Multi-Tool-Integrated Reasoning
PORTool improves accuracy and reduces tool calls in multi-tool LLM reasoning by using importance-aware policy optimization on rewarded rollout trees that compare alternative decisions sharing prefixes.