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» Transformations for semi-continuous data
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SIGMOD
2011
ACM
198views Database» more  SIGMOD 2011»
14 years 7 months ago
U-MAP: a system for usage-based schema matching and mapping
This demo shows how usage information buried in query logs can play a central role in data integration and data exchange. More specifically, our system U-Map uses query logs to g...
Hazem Elmeleegy, Jaewoo Lee, El Kindi Rezig, Moura...
ICCS
2007
Springer
15 years 10 months ago
Representation Levels Within Knowledge Representation
Abstract. Representation of knowledge is used to store and retrieve informational data in a machine. Since meaning cannot be directly stored in the computer; this work proposes a s...
Heather D. Pfeiffer, Joseph J. Pfeiffer
CSDA
2006
64views more  CSDA 2006»
15 years 4 months ago
Time-frequency analysis - G
Methods such as wavelets and M-stationary process have been developed to analyze the time-frequency properties of a process where frequency changes with time. In certain circumsta...
Huiping Jiang, Henry L. Gray, Wayne A. Woodward
ADC
2003
Springer
139views Database» more  ADC 2003»
15 years 9 months ago
Deriving Relation Keys from XML Keys
Much work on XML data was around storage and querying and did not consider constraints of XML, especially keys. Since constraints have been proposed in many papers for XML, much r...
Qing Wang, Hongwei Wu, Jianchang Xiao, Aoying Zhou...
DMDW
2001
128views Management» more  DMDW 2001»
15 years 5 months ago
Improving Data Cleaning Quality Using a Data Lineage Facility
The problem of data cleaning, which consists of removing inconsistencies and errors from original data sets, is well known in the area of decision support systems and data warehou...
Helena Galhardas, Daniela Florescu, Dennis Shasha,...