The truth value of an array with more than one element is ambiguous. Use a.any() or a.all()

AI & Machine learning
1

https://github.com/abdmunir81/mlpR/blob/main/prework





Hi Quantra…



Need some help with the codes above that return with an error at  "handle_data"



The error is   """

ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.all()

          """

Does the array is wrong somehow?

Thank you,
2

this means most probably you are using some sort of boolean test on this array or on an expression using this array.  E.g.



if x == 0:

    # do something here

    pass



If x is an array, the results of x==0 will be an array of True or False, But the 'if' test cannot handle an array of boolean values, it expects a single value, True or False. That is what the error message suggests, using 'any' or 'all' to reduce the boolean array to a single boolean value.



In your case, most probably the issue is the 'y_pred' variable returned from the 'ann' function. Check for its type, it is perhaps an array with a single element. In that case you want to return that element from the function, than the array itself. 

3

Thank you Sir…





will check on it…