Sciweavers

11211 search results - page 192 / 2243
» Data Structures
Sort
View
BNCOD
2009
145views Database» more  BNCOD 2009»
15 years 7 months ago
Compacting XML Structures Using a Dynamic Labeling Scheme
Due to the growing popularity of XML as a data exchange and storage format, the need to develop efficient techniques for storing and querying XML documents has emerged. A common ap...
Ramez Alkhatib, Marc H. Scholl
ICDT
2009
ACM
175views Database» more  ICDT 2009»
16 years 7 months ago
Structural characterizations of schema-mapping languages
Schema mappings are declarative specifications that describe the relationship between two database schemas. In recent years, there has been an extensive study of schema mappings a...
Balder ten Cate, Phokion G. Kolaitis
APWEB
2004
Springer
15 years 12 months ago
Improving XML Query Performance Using Social Classes
In a state-of-the-art XML database, an XML query is evaluated as a sequence of structural joins in which positions of data nodes are used to perform each individual structural joi...
Weining Zhang, Douglas Pollok
SODA
2008
ACM
86views Algorithms» more  SODA 2008»
15 years 7 months ago
Space-efficient dynamic orthogonal point location, segment intersection, and range reporting
We describe an asymptotically optimal data-structure for dynamic point location for horizontal segments. For n line-segments, queries take O(log n) time, updates take O(log n) amo...
Guy E. Blelloch
WWW
2006
ACM
16 years 7 months ago
Online mining of frequent query trees over XML data streams
In this paper, we proposed an online algorithm, called FQT-Stream (Frequent Query Trees of Streams), to mine the set of all frequent tree patterns over a continuous XML data strea...
Hua-Fu Li, Man-Kwan Shan, Suh-Yin Lee