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Full-Text Articles in Systems Architecture
A Data-Descriptive Feedback Framework For Data Stream Management Systems, Rafael J. Fernández Moctezuma
A Data-Descriptive Feedback Framework For Data Stream Management Systems, Rafael J. Fernández Moctezuma
Dissertations and Theses
Data Stream Management Systems (DSMSs) provide support for continuous query evaluation over data streams. Data streams provide processing challenges due to their unbounded nature and varying characteristics, such as rate and density fluctuations. DSMSs need to adapt stream processing to these changes within certain constraints, such as available computational resources and minimum latency requirements in producing results. The proposed research develops an inter-operator feedback framework, where opportunities for run-time adaptation of stream processing are expressed in terms of descriptions of substreams and actions applicable to the substreams, called feedback punctuations. Both the discovery of adaptation opportunities and the exploitation of …
Consolidated Study On Query Expansion, Abhishek Biruduraju
Consolidated Study On Query Expansion, Abhishek Biruduraju
UNLV Theses, Dissertations, Professional Papers, and Capstones
A typical day of million web users all over the world starts with a simple query. The quest for information on a particular topic drives them to search for it, and in the pursuit of their info the terms they supply for queries varies from person to person depending on the knowledge they have. With a vast collection of documents available on the web universe it is the onus of the retrieval system to return only those documents that are relevant and satisfy the user’s search requirements. The document mismatch problem is resolved by appending extra query terms to the …