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FOIKS
2010
Springer
15 years 9 months ago
On the Existence of Armstrong Data Trees for XML Functional Dependencies
Armstrong databases are a popular tool in example-based database design. An Armstrong database for a given constraint set from a fixed constraint class Z satisfies precisely those ...
Sven Hartmann, Henning Köhler, Thu Trinh
FUIN
2007
86views more  FUIN 2007»
15 years 6 months ago
Relative Nondeterministic Information Logic is EXPTIME-complete
We define a relative version of the logic NIL introduced by Orłowska, Pawlak and Vakarelov and we show that satisfiability is not only decidable but also EXPTIME-complete. Such ...
Stéphane Demri, Ewa Orlowska
CADE
2008
Springer
16 years 6 months ago
Automata-Based Axiom Pinpointing
Axiom pinpointing has been introduced in description logics (DL) to help the user understand the reasons why consequences hold by computing minimal subsets of the knowledge base th...
Franz Baader, Rafael Peñaloza
APLAS
2004
ACM
15 years 11 months ago
Translation of Tree-Processing Programs into Stream-Processing Programs Based on Ordered Linear Type
There are two ways to write a program for manipulating tree-structured data such as XML documents: One is to write a tree-processing program focusing on the logical structure of t...
Koichi Kodama, Kohei Suenaga, Naoki Kobayashi
SIGIR
2004
ACM
15 years 11 months ago
Configurable indexing and ranking for XML information retrieval
Indexing and ranking are two key factors for efficient and effective XML information retrieval. Inappropriate indexing may result in false negatives and false positives, and impro...
Shaorong Liu, Qinghua Zou, Wesley W. Chu