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I want to use linear regression for prediction, but I have a problem with the predictor variables (X-axis) 3 of them are categorical and I have at least 60 values on each of them , If I use formula tool for creating dummy variable I believe it will take more than 2 or 3 days to do so , can anyone tell me how to solve this issue faster?
Note (If macro needed please provide it with workflow example for dummy creation for 60 values).
but I got an error in the Append field ("Error: Append Fields (14): There were more than 16 records in the source") for @jdunkerley79 solution, and for @JoeS still I do not understand it (how to deal it with my case), The Fields I'm looking to make it dummy are:
Shop_id, date_block_num and right_item_category_id.
@JoeS You are right "Linear Regression tool will do this already for you"
when I start to implement the linear regression it said the matrix is too large (XX GB) cannot be handled, that's why I thought it needs to create a dummy variable but in this case what I should do to solve the issue of the large matrix?