You work for a delivery company. You need to design a system that stores and manages features such as
parcels delivered and truck locations over time. The system must retrieve the features with low latency and
feed those features into a model for online prediction. The data science team will retrieve historical data at a
specific point in time for model training. You want to store the features with minimal effort. What should you
do?
You are building a linear model with over 100 input features, all with values between -1 and 1. You
suspect that many features are non-informative. You want to remove the non-informative features
from your model while keeping the informative ones in their original form. Which technique should
you use?
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