A system comprising at least one hardware processor; and a non-transitory computer-readable storage medium having stored thereon program instructions executable to receive, as input, one or more digital documents, a query statement, and a summary length constraint, automatically generate, for each of said one or more digital documents, an initial summary based, at least in part, on a first sentence selection which satisfies said query statement, a modified said summary length constraint, and a first summary quality goal, automatically extract, from each of said initial summaries, one or more associated feedback metrics, and automatically generate, for each of said one or more digital documents, a final summary based, at least in part, on: (i) a second sentence selection which satisfies said query statement, said summary length constraint, and a second summary quality goal, and (ii) at least one of said associated feedback metrics.
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