Extraction and integration of partially overlap** web sources

M Bronzi, V Crescenzi, P Merialdo… - Proceedings of the VLDB …, 2013 - dl.acm.org
We present an unsupervised approach for harvesting the data exposed by a set of structured
and partially overlap** data-intensive web sources. Our proposal comes within a formal …

Language-model-based ranking for queries on RDF-graphs

S Elbassuoni, M Ramanath, R Schenkel… - Proceedings of the 18th …, 2009 - dl.acm.org
The success of knowledge-sharing communities like Wikipedia and the advances in
automatic information extraction from textual and Web sources have made it possible to …

Query relaxation for entity-relationship search

S Elbassuoni, M Ramanath, G Weikum - … , Crete, Greece, May 29–June 2 …, 2011 - Springer
Entity-relationship-structured data is becoming more important on the Web. For example,
large knowledge bases have been automatically constructed by information extraction from …

ReCG: Bottom-up JSON Schema Discovery Using a Repetitive Cluster-and-Generalize Framework

J Yun, B Tak, WS Han - Proceedings of the VLDB Endowment, 2024 - dl.acm.org
The schemalessness, one of the major advantages of JSON representation format, comes
with high penalties in querying and operations by denying various critical functions such as …

Relationship queries on extended knowledge graphs

M Yahya, D Barbosa, K Berberich, Q Wang… - Proceedings of the …, 2016 - dl.acm.org
Entity search over text corpora is not geared for relationship queries where answers are
tuples of related entities and where a query often requires joining cues from multiple …

Answering why-not questions on SPARQL queries

M Wang, J Liu, B Wei, S Yao, H Zeng, L Shi - Knowledge and Information …, 2019 - Springer
Abstract SPARQL, the W3C standard for RDF query languages, has gained significant
popularity in recent years. An increasing amount of effort is currently being exerted to …

Output perturbation with query relaxation

X **ao, Y Tao - Proceedings of the VLDB Endowment, 2008 - dl.acm.org
Given a dataset containing sensitive personal information, a statistical database answers
aggregate queries in a manner that preserves individual privacy. We consider the problem …

Facto: a fact lookup engine based on web tables

X Yin, W Tan, C Liu - Proceedings of the 20th international conference …, 2011 - dl.acm.org
Recently answers for fact lookup queries have appeared on major search engines. For
example, for the query Barack Obama date of birth Google directly shows" 4 August 1961" …

Pushing the boundaries of crowd-enabled databases with query-driven schema expansion

J Selke, C Lofi, WT Balke - arxiv preprint arxiv:1203.0057, 2012 - arxiv.org
By incorporating human workers into the query execution process crowd-enabled databases
facilitate intelligent, social capabilities like completing missing data at query time or …

Answering approximate queries over XML data

J Liu, DL Yan - IEEE Transactions on Fuzzy Systems, 2015 - ieeexplore.ieee.org
With the increasing popularity of XML for data representations, there is a lot of interest in
searching XML data. Due to the structural heterogeneity and textual content's diversity of …