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» Reasoning from Data Rather than Theory
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PODS
2007
ACM
142views Database» more  PODS 2007»
14 years 9 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...
IJCNN
2000
IEEE
14 years 1 months ago
EM Algorithms for Self-Organizing Maps
eresting web-available abstracts and papers on clustering: An Analysis of Recent Work on Clustering Algorithms (1999), Daniel Fasulo : This paper describes four recent papers on cl...
Tom Heskes, Jan-Joost Spanjers, Wim Wiegerinck
CSFW
2009
IEEE
14 years 3 months ago
Updatable Security Views
Security views are a flexible and effective mechanism for controlling access to confidential information. Rather than allowing untrusted users to access source data directly, th...
J. Nathan Foster, Benjamin C. Pierce, Steve Zdance...
TBILLC
2005
Springer
14 years 2 months ago
Case Attraction in Ancient Greek
Case attraction has stood as a puzzling, and elusive, oddity of older Indo-European languages. This paper focuses on attraction in Ancient Greek, establishing both the regularity o...
Scott Grimm
DBISP2P
2003
Springer
105views Database» more  DBISP2P 2003»
14 years 2 months ago
Distributed Queries and Query Optimization in Schema-Based P2P-Systems
Databases have employed a schema-based approach to store and retrieve structured data for decades. For peer-to-peer (P2P) networks, similar approaches are just beginning to emerge,...
Ingo Brunkhorst, Hadhami Dhraief, Alfons Kemper, W...