One-hot encode columns
Encodes columns with N different values into N integer columns representing the original values with 0’s and 1’s.

Inputs
- 
    
Data — Tensor
2D tensor (a table) to encode.
 - 
    
Column(s) — List of Integer
Index(es) of the column(s) to encode.
 
Outputs
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Encoded data — Tensor
Resulting encoded table.