Regularizations

data_science
statistics

#1

This question is not related to any specific datasets but it is a generalized one.
How often do data scientists or data analysts come across regularizations (L1 or L2) in dealing with datasets ? I know overfitting is a common scenario in building a model. So, is regularization the only way to solve this overfitting ?

Can anyone show regularizaion techniques they followed in any of the datasets of AnalyticsVidhya comepetitions ?

Thanks in advance.

Regards,
Raghav.