Brent Paulovicks

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With increased concern for physical security, video surveillance is becoming an important business area. Similar camera-based system can also be used in such diverse applications as retail-store shopper motion analysis and casino behavioral policy monitoring. There are two aspects of video surveillance that require significant computing power: image(More)
In a commercial Relational Database Management System (RDBMS), sort and join are the most demanding operations, and it is quite beneficial to improve the performance of external sort and external join algorithms that handle large input data sizes. This paper proposes parallel implementations of multi-threaded external sort and external hash join algorithms(More)
LIMITED DISTRIBUTION NOTICE: This report has been submitted for publication outside of IBM and will probably be copyrighted if accepted for publication. It has been issued as a Research Report for early dissemination of its contents. In view of the transfer of copyright to the outside publisher, its distribution outside of IBM prior to publication should be(More)
Apache Spark enables fast computations and greatly accelerates analytics applications by efficiently utilizing the main memory and caching data for later use. At its core Apache Spark uses data structures called RDDs (Resilient Distributed Datasets) to give a unified view to the distributed data. However, the data represented in the RDDs remain unencrypted(More)
Cloud service providers are offering the popular Hadoop analytics platform following an "as-a-service" model, i.e. clusters of machines in their cloud infrastructures pre-configured with Hadoop software. Such offerings lower the cost and complexity of deploying a comparable system on-premises, however security considerations and in particular data(More)
LIMITED DISTRIBUTION NOTICE: This report has been submitted for publication outside of IBM and will probably be copyrighted if accepted for publication. It has been issued as a Research Report for early dissemination of its contents. In view of the transfer of copyright to the outside publisher, its distribution outside of IBM prior to publication should be(More)
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