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DMDW
2001
128views Management» more  DMDW 2001»
15 years 7 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,...
SIGMOD
2011
ACM
169views Database» more  SIGMOD 2011»
14 years 9 months ago
Leveraging query logs for schema mapping generation in U-MAP
In this paper, we introduce U-MAP, a new system for schema mapping generation. U-MAP builds upon and extends existing schema mapping techniques. However, it mitigates some key pro...
Hazem Elmeleegy, Ahmed K. Elmagarmid, Jaewoo Lee
WMRD
1990
15 years 10 months ago
Replication in Ficus Distributed File Systems
Ficus is a replicated general ling environment for Unix intended to scale to very large nationwide networks. The system employs an optimistic one copy availability" model in ...
Gerald J. Popek, Richard G. Guy, Thomas W. Page Jr...
COLING
2002
15 years 6 months ago
The LinGO Redwoods Treebank: Motivation and Preliminary Applications
The LinGO Redwoods initiative is a seed activity in the design and development of a new type of treebank. While several medium- to large-scale treebanks exist for English (and for...
Stephan Oepen, Kristina Toutanova, Stuart M. Shieb...
STOC
1993
ACM
134views Algorithms» more  STOC 1993»
15 years 10 months ago
Quantum complexity theory
In this paper we study quantum computation from a complexity theoretic viewpoint. Our first result is the existence of an efficient universal quantum Turing machine in Deutsch’s...
Ethan Bernstein, Umesh V. Vazirani