A data set question for Regression

Sortac71Sortac71 Member Posts: 1 Newbie

In a sample case I am given two sets of data (1 for training and 1 for testing). Whatever I do training data comes up with 1 more attributes than the training data. My question is how can I compare these two data sets to find out what is missing? Is this a common problem? What are the most common ways to check and fix it?

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