Digits recognition playground

I used known digits sample to go through the steps of data analysis and checked the main algorithms.

Linear models were not used for this data set

See source code (Kaggle)

• Decision trees (Decision tree, Random Forest)
• K-nearest neighbors
• Neural networks (Fully connected, Convolutional, Combined)

Titanic playground

Titanic data required deeper analysis. Classes (survived, not survived) were not balanced, data required normalization and feature selection

See source code (Kaggle)

• Decision trees (Random Forest)
• Ensemble models (Gradient and Adaptive Boosting, Bagging classifier)