Sciweavers

211 search results - page 21 / 43
» Ranked Query Processing in Uncertain Databases
Sort
View
EDBT
2009
ACM
162views Database» more  EDBT 2009»
14 years 2 months ago
A data model for trip planning in multimodal transportation systems
This paper introduces the problem of modeling urban transportation systems in a database where certain aspects of the data are probabilistic in nature. The transportation network ...
Joel Booth, A. Prasad Sistla, Ouri Wolfson, Isabel...
ICSNW
2004
Springer
238views Database» more  ICSNW 2004»
14 years 28 days ago
Knowledge Sifter: Agent-Based Ontology-Driven Search over Heterogeneous Databases Using Semantic Web Services
Knowledge Sifter is a scaleable agent-based system that supports access to heterogeneous information sources such as the Web, open-source repositories, XML-databases and the emergi...
Larry Kerschberg, Mizan Chowdhury, Alberto Damiano...
SIGMOD
2007
ACM
125views Database» more  SIGMOD 2007»
14 years 7 months ago
Optimizing mpf queries: decision support and probabilistic inference
Managing uncertain data using probabilistic frameworks has attracted much interest lately in the database literature, and a central computational challenge is probabilistic infere...
Héctor Corrada Bravo, Raghu Ramakrishnan
ICDE
2009
IEEE
190views Database» more  ICDE 2009»
14 years 9 months ago
Progressive Keyword Search in Relational Databases
A common approach to performing keyword search over relational databases is to find the minimum Steiner trees in database graphs. These methods, however, are rather expensive as th...
Guoliang Li, Xiaofang Zhou, Jianhua Feng, Jianyong...
ICASSP
2008
IEEE
14 years 2 months ago
Query by humming of midi and audio using locality sensitive hashing
This paper proposes a query by humming method based on locality sensitive hashing (LSH). The method constructs an index of melodic fragments by extracting pitch vectors from a dat...
Matti Ryynänen, Anssi Klapuri