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Synthesize, Execute and Debug: Learning to Repair for Neural Program Synthesis

NeurIPS 2020 · Large language models › Agents, code and math · approach: LLM-guided program synthesis · 15 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
add SED debugger on top of synthesizerLGRL-GD · Karel testgeneralization error: 39.00 -> 16.12Helped
add SED debugger on top of synthesizerEGNPS · Karel testgeneralization error: 12.64 -> 10.48Helped
add SED to the 15-model EGNPS ensembleEGNPS ensemble · Karel testgeneralization error: 8.32 -> 7.78Helped
use SED instead of standard beam search at equal expanded programsLGRL · Karel testgeneralization error: 17.00 -> 15.40Helped
add fine-tuning of debugger on synthesizer outputs (ablation)SED · Karel testgeneralization error: 18.56 -> 16.12 (LGRL-GD, no TraceEmbed)Helped
add TraceEmbed (execution trace embedding) to debugger (ablation)SED, fine-tuned · Karel testgeneralization error: 16.12 -> 16.12 (LGRL-GD); 14.32 -> 14.28 (LGRL); 10.20 -> 10.48 (EGNPS)No clear effect
add TraceEmbed to debugger without fine-tuning (ablation)SED · Karel testgeneralization error: 18.56 -> 18.68 (LGRL-GD); 14.88 -> 14.60 (LGRL); 10.68 -> 10.68 (EGNPS)Mixed
enlarge hidden sizes instead of adding TraceEmbed (ablation)SED without TraceEmbed · Karel test, LGRLgeneralization error: 15.88 vs 14.88 (no finetune), 16.64 vs 14.32 (finetune)Hurt
use best-first search instead of greedy search over edits (ablation)SED · Karel testgeneralization errorHelped
train debugger on 1-5 mutations instead of 1-3 (ablation)debugger · mutation benchmarkrepair accuracyMixed

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