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» Characterizations of postman sets
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TSE
1998
112views more  TSE 1998»
15 years 4 months ago
Message Logging: Pessimistic, Optimistic, Causal, and Optimal
Message-logging protocols are an integral part of a popular technique for implementing processes that can recover from crash failures. All message-logging protocols require that, ...
Lorenzo Alvisi, Keith Marzullo
MOR
2007
100views more  MOR 2007»
15 years 3 months ago
On Scheduling Fees to Prevent Merging, Splitting, and Transferring of Jobs
A deterministic server is shared by users with identical linear waiting costs, requesting jobs of arbitrary lengths. Shortest jobs are served first for efficiency. The server can...
Hervé Moulin
PVLDB
2008
122views more  PVLDB 2008»
15 years 3 months ago
Identifying robust plans through plan diagram reduction
Estimates of predicate selectivities by database query optimizers often differ significantly from those actually encountered during query execution, leading to poor plan choices a...
Harish D., Pooja N. Darera, Jayant R. Haritsa
RAS
2008
139views more  RAS 2008»
15 years 3 months ago
Unsupervised identification of useful visual landmarks using multiple segmentations and top-down feedback
In this paper, we tackle the problem of unsupervised selection and posterior recognition of visual landmarks in images sequences acquired by an indoor mobile robot. This is a high...
Pablo Espinace, Daniel Langdon, Alvaro Soto
DGCI
2005
Springer
15 years 10 months ago
Algorithms for the Topological Watershed
The watershed transformation is an efficient tool for segmenting grayscale images. An original approach to the watershed [1,9] consists in modifying the original image by lowering...
Michel Couprie, Laurent Najman, Gilles Bertrand