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SIGMOD
2008
ACM
206views Database» more  SIGMOD 2008»
14 years 10 months ago
Ad-hoc aggregations of ranked lists in the presence of hierarchies
A variety of web sites and web based services produce textual lists at varying time granularities ranked according to several criteria. For example, Google Trends produces lists o...
Nilesh Bansal, Sudipto Guha, Nick Koudas
SIGMOD
2007
ACM
145views Database» more  SIGMOD 2007»
14 years 10 months ago
Why off-the-shelf RDBMSs are better at XPath than you might expect
To compensate for the inherent impedance mismatch between the relational data model (tables of tuples) and XML (ordered, unranked trees), tree join algorithms have become the prev...
Torsten Grust, Jan Rittinger, Jens Teubner
MOBIHOC
2004
ACM
14 years 9 months ago
Using labeled paths for loop-free on-demand routing in ad hoc networks
We present the Feasible Label Routing (FLR) protocol for mobile ad hoc networks, which uses path information to establish routes to destinations on demand. FLR enables loopfree in...
Hari Rangarajan, J. J. Garcia-Luna-Aceves
MIR
2010
ACM
232views Multimedia» more  MIR 2010»
14 years 4 months ago
Exploiting external knowledge to improve video retrieval
Most video retrieval systems are multimodal, commonly relying on textual information, low- and high-level semantic features extracted from query visual examples. In this work, we ...
David Vallet, Iván Cantador, Joemon M. Jose
CIVR
2009
Springer
212views Image Analysis» more  CIVR 2009»
14 years 4 months ago
Video copy detection by fast sequence matching
Sequence matching techniques are effective for comparing two videos. However, existing approaches suffer from demanding computational costs and thus are not scalable for large-sca...
Mei-Chen Yeh, Kwang-Ting Cheng