Abstract and Keywords
Automated text summarization systems seek to provide the most important content contained in their (single or multiple document, and static or streaming over time) input. Extractive summarizers use various methods to assign an importance score to each fragment of the input and return the highest-scoring fragments, while abstractive summarizers attempt to compress and reformulate the extracted fragments and regenerate them in original and more elegant and coherent form. Numerous methods of scoring, combination, and compression have been developed. Evaluating the linguistic quality of a summary is much easier than evaluating the adequacy of its content. Various methods have been developed to compare system summary contents to the summaries of humans.
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