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LREC
2008
101views Education» more  LREC 2008»
14 years 11 months ago
Ontology-Based XQuery'ing of XML-Encoded Language Resources on Multiple Annotation Layers
We present an approach for querying collections of heterogeneous linguistic corpora that are annotated on multiple layers using arbitrary XML-based markup languages. An OWL ontolo...
Georg Rehm, Richard Eckart, Christian Chiarcos, Jo...
DATESO
2009
158views Database» more  DATESO 2009»
14 years 7 months ago
Benchmarking Coding Algorithms for the R-tree Compression
Multi-dimensional data structures have been widely applied in many data management fields. Spatial data indexing is their natural application, however there are many applications i...
Jirí Walder, Michal Krátký, R...
SIGMOD
2004
ACM
156views Database» more  SIGMOD 2004»
15 years 9 months ago
Tree Logical Classes for Efficient Evaluation of XQuery
XML is widely praised for its flexibility in allowing repeated and missing sub-elements. However, this flexibility makes it challenging to develop a bulk algebra, which typically ...
Stelios Paparizos, Yuqing Wu, Laks V. S. Lakshmana...
ADBIS
2003
Springer
114views Database» more  ADBIS 2003»
15 years 2 months ago
Compressing Large Signature Trees
In this paper we present a new compression scheme for signature tree structures. Beyond the reduction of storage space, compression attains significant savings in terms of query pr...
Maria Kontaki, Yannis Manolopoulos, Alexandros Nan...
ICDE
2009
IEEE
143views Database» more  ICDE 2009»
15 years 4 months ago
Supporting Generic Cost Models for Wide-Area Stream Processing
— Existing stream processing systems are optimized for a specific metric, which may limit their applicability to diverse applications and environments. This paper presents XFlow...
Olga Papaemmanouil, Ugur Çetintemel, John J...