Warning used to notify implicit data conversions happening in the code.
This warning occurs when some input data needs to be converted or interpreted in a way that may not match the user’s expectations.
- For example, this warning may occur when the user
- passes an integer array to a function which expects float input and will convert the input
- requests a non-copying operation, but a copy is required to meet the implementation’s data-type expectations;
- passes an input whose shape can be interpreted ambiguously.
Changed in version 0.18: Moved from sklearn.utils.validation.