python : AttributeError: 'str' object has no attribute 'keys'

Question

I\'m trying to solve classification problem. I don\'t know why I\'m getting this error:

AttributeError: \'str\' object has no attribute \'keys\'

Answer 1

your issue is caused by class_weight="balanced" parameter that you pass to model.fit()

according to the model.fit() reference, this parameter should be a dict: Optional dictionary mapping class indices (integers) to a weight (float) value, used for weighting the loss function (during training only). This can be useful to tell the model to "pay more attention" to samples from an under-represented class.

try class_weight=None for testing, it should get rid of the original error. Later provide proper dict as class_weight to address imbalanced dataset issue.