Optimal Top-K Query Processing: Sampling and Dynamic Approach

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Provided by: International Journal of Engineering Trends and Technology
Topic: Big Data
Format: PDF
An effective query processing plays an important role in the uncertain data streams. Specifically, multiple top-k queries processing on uncertain data streams obtained from large applications of several fields such as sensor network monitoring and internet traffic control requires periodic execution of queries and sharing results among them. The system that monitors uncertain events in such data streams manipulates the top-k queries. Here the problem is that existing systems were not designed to allow query results sharing which in turn leads to high computation cost and inaccurate response from the system.
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