Before revision:  This literature review , therefore, is a first-of-its-kind attempt at providing a holistic overview of CMC , with an emphasis on the common trends across recently published models, specifically in their approach to tackling conversational history.
After revision:  This literature review , therefore, is a first-of-its-kind attempt at providing a holistic overview of CMC with an emphasis on the common trends across recently published models, specifically in their approach to tackling conversational history.