House prices prediction using xgboost,linear regression, decision trees & cross-validation

This notebook aims to predict house prices for the house-prices-advanced-regression-techniques kaggle competition. My models have currently achieved:

Linear regression = 0.1435 rmse(scaled down) Best performer. Decision tree regressor = 0.156 rmse. Xgboost regressor = 0.15179 rmse. Leaderboard = 1993 / 4696