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» Estimating the Quality of Databases
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CLEANDB
2006
ACM
113views Database» more  CLEANDB 2006»
14 years 2 months ago
Column Heterogeneity as a Measure of Data Quality
Data quality is a serious concern in every data management application, and a variety of quality measures have been proposed, including accuracy, freshness and completeness, to ca...
Bing Tian Dai, Nick Koudas, Beng Chin Ooi, Divesh ...
SIGMOD
2008
ACM
86views Database» more  SIGMOD 2008»
13 years 8 months ago
The Spicy system: towards a notion of mapping quality
We introduce the Spicy system, a novel approach to the problem of automatically selecting the best mappings among two data sources. Known schema mapping algorithms rely on value c...
Angela Bonifati, Giansalvatore Mecca, Alessandro P...
VLDB
2007
ACM
137views Database» more  VLDB 2007»
14 years 9 months ago
Improving Data Quality: Consistency and Accuracy
Two central criteria for data quality are consistency and accuracy. Inconsistencies and errors in a database often emerge as violations of integrity constraints. Given a dirty dat...
Gao Cong, Wenfei Fan, Floris Geerts, Xibei Jia, Sh...
ICIP
2002
IEEE
14 years 10 months ago
Perceived quality metrics for low bit rate compressed video
This paper presents an objective metric for the perceived quality of low bit rate compressed video. Frames are decomposed into several frequency bands at multiple scales and a mot...
Mark Masry, Sheila S. Hemami
ICCV
2009
IEEE
13 years 6 months ago
A study on automatic age estimation using a large database
In this paper we study some problems related to human age estimation using a large database. First, we study the influence of gender on age estimation based on face representation...
Guodong Guo, Guowang Mu, Yun Fu, Charles R. Dyer, ...