I would like to ask you for a piece of advice concerning the justification of the classification framework in a systematic review article.
I am writing an article in a retailing context and I want to classify from a marketing perspective. I managed to classify some of the articles. However, I do not know what approaches I can use for the classification.
I was thinking to categorize the articles into sub-disciplines such as consumer behaviour, innovations etc. but I am not sure if there is a way to justify the subjective criteria.
Moreover, probably similar categorizations have been already used even it is in regards to other concepts, not those that I want to explore, so I am afraid if I can prove my contribution in my paper.
How should I proceed?