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ICDCS
2010
IEEE
14 years 18 days ago
Visual, Log-Based Causal Tracing for Performance Debugging of MapReduce Systems
Abstract—The distributed nature and large scale of MapReduce programs and systems poses two challenges in using existing profiling and debugging tools to understand MapReduce pr...
Jiaqi Tan, Soila Kavulya, Rajeev Gandhi, Priya Nar...
CORR
2010
Springer
170views Education» more  CORR 2010»
13 years 8 months ago
Rule-based Generation of Diff Evolution Mappings between Ontology Versions
Ontologies such as taxonomies, product catalogs or web directories are heavily used and hence evolve frequently to meet new requirements or to better reflect the current instance d...
Michael Hartung, Anika Gross, Erhard Rahm
SYSTOR
2010
ACM
14 years 1 months ago
On the DMA mapping problem in direct device assignment
I/O intensive workloads running in virtual machines can suffer massive performance degradation. Direct assignment of I/O devices to virtual machines is the best performing I/O vir...
Ben-Ami Yassour, Muli Ben-Yehuda, Orit Wasserman
ICVS
2003
Springer
14 years 1 months ago
Automatic Mapping of Settlement Areas Using a Knowledge-Based Image Interpretation System
Abstract. We introduce the knowledge-based image interpretation system GeoAIDA and give examples for an image operator, extracting trees from aerial imagery. Moreover we present a ...
Bernd-Michael Straub, Markus Gerke, Martin Pahl
PODS
2007
ACM
142views Database» more  PODS 2007»
14 years 8 months ago
Quasi-inverses of schema mappings
Schema mappings are high-level specifications that describe the relationship between two database schemas. Two operators on schema mappings, namely the composition operator and th...
Ronald Fagin, Phokion G. Kolaitis, Lucian Popa, Wa...