“…Research paradigm [4] 2) Reference discipline • E.g., educational tradition [12] 3) Content • Nature of research: e.g., theoretical -empirical [5], [6], [7], [9], [10], [11] • Theme, topic, context of the paper [4], [5], [6], [7], [8], [9], [10], [11], [12], [14] • Scope [4], [5], [6], [7], [9], [10], [11] 4) Significance • How influential the paper has been [6], [7] The common feature to all presented systems is that the used categories have been derived from the data (the CER literature).…”