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ECIR
2007
Springer
13 years 9 months ago
Using Topic Shifts for Focussed Access to XML Repositories
Abstract. In focussed XML retrieval, a retrieval unit is an XML element that not only contains information relevant to a user query, but also is specific to the query. INEX defin...
Elham Ashoori, Mounia Lalmas
ECIR
2003
Springer
13 years 9 months ago
Hierarchical Indexing and Flexible Element Retrieval for Structured Document
As more and more structured documents, such as SGML or XML documents become available on the Web, there is a growing demand to develop effective structured document retrieval which...
Hang Cui, Ji-Rong Wen, Tat-Seng Chua
ICDE
2006
IEEE
155views Database» more  ICDE 2006»
14 years 9 months ago
Answering Imprecise Queries over Autonomous Web Databases
Current approaches for answering queries with imprecise constraints require user-specific distance metrics and importance measures for attributes of interest - metrics that are ha...
Ullas Nambiar, Subbarao Kambhampati
ICDE
2005
IEEE
116views Database» more  ICDE 2005»
14 years 9 months ago
RDF Aggregate Queries and Views
Resource Description Framework (RDF) is a rapidly expanding web standard. RDF databases attempt to track the massive amounts of web data and services available. In this paper, we ...
Edward Hung, Yu Deng, V. S. Subrahmanian
ICDE
2001
IEEE
111views Database» more  ICDE 2001»
14 years 9 months ago
Overcoming Limitations of Sampling for Aggregation Queries
We study the problem of approximately answering aggregation queries using sampling. We observe that uniform sampling performs poorly when the distribution of the aggregated attrib...
Surajit Chaudhuri, Gautam Das, Mayur Datar, Rajeev...