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Need Help in increasing accuracy 'No' Class

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@danidarshit wrote:

I have a biased Data Set -

It contains more than 100 independent variables, with one dependent variable (Yes or No).

I have unbalanced classes, e.g. 98% 'Yes' labels vs 2% 'No' labels.

On Real Production : For New testing data , Accuracy for 'Yes' is : 99% and for 'No' it is 30%.

I have made my model on Logistic Regression.

With help of which statistical model/method , i can increase my accuracy of 'No' to 50%.

Any Suggestion will be appreciated!!!!

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