duplicate colum names

[Martin Wright]

This is a simple question, but I can't find the answer elsewhere.

I am passing a DataFrame into keras "model.fit()" with the following column names:

r1 r2 r3 r4 r4 r4 r4 r4 r4 r5 r6 r7 r8 r8 r9 r10 etc...

As you can see, some of the columns have the same same.

This is because the sample values for some columns are a list/array rather than a single value and I have then applied an explode function to flatten them out.

My question is simple - does this matter?

Or will duplicate column names distort the model weightings, implying I need to change the column names to make sure that each column name is unique?

Thanks ...

[Pemphero Mkuka]

Yes it will matter if you don't change r4 will be treated as the same feature so the output will be distorted

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