For a research project I have to evaluate and categorize several theoretical and practical industry 4.0 use cases. Furthermore, I have to quantify the impact of each technology on 20 different competitive priorities. Since each of the 500 use cases is written by a different author, and therefore the size and quality of the text content varies greatly, it is difficult to evaluate the texts in a consistent way.
How can I evaluate qualitative data from different sources consistently and stringently without becoming too subjective and without making too many assumptions?