• Publications
  • Influence
Hierarchical parallel coordinates for exploration of large datasets
TLDR
We develop a multi-resolution view of the data via hierarchical clustering, and use a variation of parallel coordinates to convey aggregation information for the resulting clusters. Expand
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Hierarchical Encoded Path Views for Path Query Processing: An Optimal Model and Its Performance Evaluation
TLDR
Efficient path computation is essential for applications such as intelligent transportation systems (ITS) and network routing. Expand
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Multiview: A Methodology for Supporting Multiple Views in Object-Oriented Databases
TLDR
A view in object-oriented databases (OODB) corresponds to virtual schema graph with possibly restructured generalization and decomposition hierarchies. Expand
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Spatial Joins Using R-trees: Breadth-First Traversal with Global Optimizations
TLDR
R-tree based spatial join is useful because of both its superior performance and the wide spread implementation of R-trees. Expand
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Neighbor-based pattern detection for windows over streaming data
TLDR
The discovery of complex patterns such as clusters, outliers, and associations from huge volumes of streaming data has been recognized as critical for many domains. Expand
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Clutter Reduction in Multi-Dimensional Data Visualization Using Dimension Reordering
TLDR
We define visual clutter as any aspect of the visualization that interferes with the viewer's understanding of the data, and present the concept of clutter-based dimension reordering. Expand
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InterRing: an interactive tool for visually navigating and manipulating hierarchical structures
TLDR
We present InterRing, an RSF hierarchy visualization system that supports multi-focus distortions, interactive hierarchy reconfiguration, and both semi-automated selection. Expand
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Dynamic plan migration for continuous queries over data streams
TLDR
Dynamic plan migration is concerned with the on-the-fly transition from one continuous query plan to a semantically equivalent yet more efficient plan. Expand
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Scalable distance-based outlier detection over high-volume data streams
TLDR
We propose the first general framework to handle the three major classes of distance-based outliers in streaming environments, including the traditional distance-threshold based and the nearest-neighbor-based definitions. Expand
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A Security Punctuation Framework for Enforcing Access Control on Streaming Data
TLDR
The management of privacy and security in the context of data stream management systems (DSMS) remains largely an unaddressed problem to date. Expand
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