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PVLDB
2008
154views more  PVLDB 2008»
15 years 5 months ago
Indexing land surface for efficient kNN query
The class of k Nearest Neighbor (kNN) queries is frequently used in geospatial applications. Many studies focus on processing kNN in Euclidean and road network spaces. Meanwhile, ...
Cyrus Shahabi, Lu-An Tang, Songhua Xing
ISSAC
2009
Springer
149views Mathematics» more  ISSAC 2009»
16 years 29 days ago
Interoperating between computer algebra systems: computing homology of groups with kenzo and GAP
In this paper we report on an experience communicating two computer algebra systems, namely GAP (and more concretely, its HAP package to compute in Homological Algebra) and Kenzo ...
Ana Romero, Graham Ellis, Julio Rubio
CHI
2008
ACM
16 years 6 months ago
The network in the garden: an empirical analysis of social media in rural life
History repeatedly demonstrates that rural communities have unique technological needs. Yet, we know little about how rural communities use modern technologies, so we lack knowled...
Eric Gilbert, Karrie Karahalios, Christian Sandvig
SIGGRAPH
1987
ACM
15 years 10 months ago
Direct least-squares fitting of algebraic surfaces
In the course of developing a system for fitting smooth curves to camera input we have developed several direct (i.e. noniterative) methods for fitting a shape (line, circle, conic...
Vaughan R. Pratt
EDBT
2011
ACM
209views Database» more  EDBT 2011»
14 years 10 months ago
An optimal strategy for monitoring top-k queries in streaming windows
Continuous top-k queries, which report a certain number (k) of top preferred objects from data streams, are important for a broad class of real-time applications, ranging from fi...
Di Yang, Avani Shastri, Elke A. Rundensteiner, Mat...