| http://www.w3.org/ns/prov#value | - Therefore, only one time interaction is allowed in the optimization. [0191] Single interaction with pull-up: This case is an improvement upon the previous one by applying the re-write rules given in Section 4.2 to pull up the GroupBy operators to enable enumeration of a larger number of query execution plans. [0192] Full optimization: This case corresponds to the second optimization algorithm, whi
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