Tabular Community

Wulfenite

Tangerine Orange tabular crystals of Wulfenite on Barite with minor cerussite and Galena. From Rowley mine Arizona. Wulfenite is a lead molybdate mineral and is poisonous so wash hands.

Wulfenite

Wulfenite on Barite from The Rowley mine Arizona. Wulfenite is a lead molybdate mineral found in the oxidation zones of lead molybdenum deposits. Wulfenite forms sharp square tabular orange crystals.

At work, I got some weird results running XGBoost on tabular data. My CEO asked to double the training data by first splitting the data and concatenating it to itself. But it did not improve the accuracy. Is that normal? And is there a way to get better accuracy with existing data?