hi im using knime and i always get this error Execute failed: Duplicate column name when using nueral network how can i solved please
What about using the Column Rename node?
i used it it diddnt work
You have 4 classes in your data "low" "medium" "high" and "high ". Some of the "high" classes have a space after the word. Please clean up your data and try again.
You can use the function strip() in the String Manipulation node to clean up extra spaces from strings.
i try it it get me me the erorr WARN String Manipulation 3:12 failed to apply settings: Unable to compile expression
ERROR at line 59
what did you enter in the dialog?
Maybe our online training would be a good start for you: https://www.knime.org/knime-introductory-course