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I am new to machine learning, working on a regression problem. The overview of the problem is like the below;

  1. It has 6 variables in total. 5 of them features, 4 features are categorical.
  2. Using Label encoding and tried other encoding techniques also.
  3. Correlation factor among each of them was weak as all them are completely independent.

I have tried polynomial regression(tried up to 3rd degree), Lasso & Ridge regression. RMSE is 1.48 to 1.50 for all of them almost same.

Sample code snippet

from sklearn.preprocessing import PolynomialFeatures 
from sklearn.linear_model import LinearRegression  

poly = PolynomialFeatures(degree = 3) 
X_poly = poly.fit_transform(X_train), y_train) 

lin2 = LinearRegression(), y_train)

Can any one from community help me to increase the model performance. should i use neural network or tune the hyperperameters for the used algorithms.

Any guidance would be greatly appreciated. Thank you.

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