Writing

Technical notes, competition writeups,
articles, and publications.

2026

Trusting CV Over the Public Leaderboard

Kaggle Solution Writeup

A solution writeup for the ROGII - Wellbore Geology Prediction competition. It describes a model-development strategy centered on leakage-resistant well-grouped cross-validation and multi-seed validation, prioritizing cross-validation evidence over small differences on the Public Leaderboard.

Ryuuga89 · Haruki Kasamatsu · Bossaerts Vincent