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» Mapping sequences by parts
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PODS
2008
ACM
165views Database» more  PODS 2008»
16 years 28 days ago
Data exchange and schema mappings in open and closed worlds
In the study of data exchange one usually assumes an openworld semantics, making it possible to extend instances of target schemas. An alternative closed-world semantics only move...
Leonid Libkin, Cristina Sirangelo
195
Voted
GIS
2005
ACM
16 years 1 months ago
Towards topological consistency and similarity of multiresolution geographical maps
Several application contexts require the ability to use together and compare different geographic datasets (maps) concerning the same or overlapping areas. This is for example the...
Alberto Belussi, Barbara Catania, Paola Podest&agr...
117
Voted
PODS
2010
ACM
173views Database» more  PODS 2010»
15 years 5 months ago
Foundations of schema mapping management
In the last few years, a lot of attention has been paid to the specification and subsequent manipulation of schema mappings, a problem which is of fundamental importance in metad...
Marcelo Arenas, Jorge Pérez, Juan L. Reutte...
SIGMOD
2011
ACM
299views Database» more  SIGMOD 2011»
14 years 3 months ago
Processing theta-joins using MapReduce
Joins are essential for many data analysis tasks, but are not supported directly by the MapReduce paradigm. While there has been progress on equi-joins, implementation of join alg...
Alper Okcan, Mirek Riedewald
IPSN
2010
Springer
15 years 6 months ago
Ear-phone: an end-to-end participatory urban noise mapping system
A noise map facilitates monitoring of environmental noise pollution in urban areas. It can raise citizen awareness of noise pollution levels, and aid in the development of mitigat...
Rajib Kumar Rana, Chun Tung Chou, Salil S. Kanhere...