'predictive effect in the classification made according to the comments in different fields

I want to do a classification through comments categorized in 4 areas. For example, categorizing the product as good or bad based on the comments in the fields X, Y, Z, M. How can I follow a path to see the effects of these 4 areas on the result. It was first to combine the comments in the 4 fields, then to predict via lstm, but the separation of the fields is lost. Would it be a good solution to build and combine 4 different models?



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