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GIS
2009
ACM
15 years 10 months ago
Focus+Glue+Context: an improved fisheye approach for web map services
This paper proposes a method for generating a Focus+Glue +Context map for Web map services by improving existing fisheye views methods for cartographic data. While many studies h...
Daisuke Yamamoto, Shotaro Ozeki, Naohisa Takahashi
PODC
2006
ACM
16 years 4 days ago
Sketching asynchronous streams over a sliding window
We study the problem of maintaining sketches of recent elements of a data stream. Motivated by applications involving network data, we consider streams that are asynchronous, in w...
Srikanta Tirthapura, Bojian Xu, Costas Busch
GIS
2004
ACM
16 years 7 months ago
Time-dependent affine triangulation of spatio-temporal data
In the geometric data model [6], spatio-temporal data are modelled as a finite collection of triangles that are transformed by time-dependent affinities. To facilitate querying an...
Sofie Haesevoets, Bart Kuijpers
KDD
2003
ACM
128views Data Mining» more  KDD 2003»
16 years 6 months ago
Similarity analysis on government regulations
Government regulations are semi-structured text documents that are often voluminous, heavily cross-referenced between provisions and even ambiguous. Multiple sources of regulation...
Gloria T. Lau, Kincho H. Law, Gio Wiederhold
SIGMOD
2004
ACM
157views Database» more  SIGMOD 2004»
16 years 6 months ago
Holistic UDAFs at streaming speeds
Many algorithms have been proposed to approximate holistic aggregates, such as quantiles and heavy hitters, over data streams. However, little work has been done to explore what t...
Graham Cormode, Theodore Johnson, Flip Korn, S. Mu...