Builder Journal · Mars Environmental Dynamics Analyzer (MEDA) Virtual Sensor Recovery Every Kaggle competition page carries the same line of small print under the standings. This leaderboard is calculated with approximately 50% of the test data. The final results will be based on the other 50%.
Source: [Dev.to](https://dev.to/alan_scottencinas/everyone-knows-it-scores-half-nobody-checks-which-half-953)