Gear-evolved harness beats hand-tuned agents on Kaggle Titanic: 79.9% vs 72.96%

Pale-Training-6944 · reddit · 2026-11-15

An experiment on Kaggle Titanic shows workflow matters more than model or time: Codex+Astra hit 72.96% in 60 minutes, explicit XGBoost guidance got 77.27% in 90-100 minutes, while Gear's GEPA loop evolved a DSH harness reaching 79.90% with 13-minute candidate runs. The evolved harness encodes a four-stage data-science workflow — data understanding/planning, focused experiments with error analysis, model selection under a fixed protocol, and delivery — making the workflow itself evaluable and evolvable.

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