Certainly, there exists a large body of research on extractive summarization, utilizing many different approaches (see (Nenkova and MecKeown, 2012;Yogan et al., 2016) for details on extractive summarization techniques), but these works focus on summarization, and thus, evaluation is done out of the direct context of the document.
summaries are scored based on their completeness, coherence, and importance as a standalone paragraph rather than in line with the text.