Write a paython code (Kaggle) for the following:

Q1) Transform your dataset to TF-IDF, apply logistic regression, and plot the confusion matrix on the test set .

Q2) Transform your dataset to 4-grams, apply logistic regression, and plot the confusion matrix on the test set

Q3) Combine TF-IDF and 4-grams features and apply logistic regression, and plot the confusion matrix on the test set

Q4) The employee is raising a concern about the machine learning model flagging his genuine emails as spam on occasion. Which model should we choose and would be more effective in this situation? Explain your answers.