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Enterprise Search Evaluation Stream looks at... Computational Costs

"In terms of search, computational cost applies to each of the processes in a search system. The more computations required to meet a specific performance target, the more horsepower needed. When a complex search system must index large volumes of data in real time, the computational cost is higher than indexing that data in batches over a period of 24 hours. Similarly, more users querying a system increase the computational cost of query processing. If the documents served are retrieved by the search system and processed in some way on the server prior to displaying the results for the user, these processes increase the computational cost of search...."
(p. 44)

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