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EUSAI
2007
Springer
16 years 1 months ago
A Web 2.0 Platform to Enable Context-Aware Mobile Mash-Ups
Context-aware systems allow users to access services and multimedia data according to their current context (location, identity, preferences). Web 2.0 fosters user contribution and...
Diego López de Ipiña, Juan Ignacio V...
ICALP
2007
Springer
16 years 29 days ago
Lower Bounds for Quantile Estimation in Random-Order and Multi-pass Streaming
We present lower bounds on the space required to estimate the quantiles of a stream of numerical values. Quantile estimation is perhaps the most studied problem in the data stream ...
Sudipto Guha, Andrew McGregor
ICALP
2007
Springer
16 years 29 days ago
Checking and Spot-Checking the Correctness of Priority Queues
We revisit the problem of memory checking considered by Blum et al. [3]. In this model, a checker monitors the behavior of a data structure residing in unreliable memory given an a...
Matthew Chu, Sampath Kannan, Andrew McGregor
ICDT
2007
ACM
105views Database» more  ICDT 2007»
16 years 29 days ago
Optimization of Query Plans in the presence of Access Limitations
We consider the problem of querying data sources that have limited capabilities and can thus only be accessed by complying with certain binding patterns for their attributes. This ...
Andrea Calì, Diego Calvanese, Davide Martin...
AVSS
2006
IEEE
16 years 27 days ago
A Smith-Waterman Local Alignment Approach for Spatial Activity Recognition
In this paper we address the spatial activity recognition problem with an algorithm based on Smith-Waterman (SW) local alignment. The proposed SW approach utilises dynamic program...
Daniel E. Riedel, Svetha Venkatesh, Wanquan Liu