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» Querying Semi-Structured Data

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ER
2004
Springer

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WUML: A Web Usage Manipulation Language for Querying Web Log Data

14 years 1 months ago

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In this paper, we develop a novel Web Usage Manipulation Language (WUML) which is a declarative language for manipulating Web log data. We assume that a set of trails formed by use...

Qingzhao Tan, Yiping Ke, Wilfred Ng

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DMS
2010

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Visualizing the Commonalities Between Hierarchically Structured Data Queries

13 years 6 months ago

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Abstract--In this paper we present an information visualization approach for visualizing the intersection between multiple feature hierarchies. In cases where a dataset has multipl...

Chad Jones, Ryan Armstrong, Kwan-Liu Ma

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ICALP
2005
Springer

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Tight Lower Bounds for Query Processing on Streaming and External Memory Data

14 years 1 months ago

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We study a clean machine model for external memory and stream processing. We show that the number of scans of the external data induces a strict hierarchy (as long as work space is...

Martin Grohe, Christoph Koch, Nicole Schweikardt

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ICDE
2004
IEEE

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Multi-Scale Histograms for Answering Queries over Time Series Data

14 years 9 months ago