5692 search results - page 1018 / 1139 » Challenges and Unsolved Problems |
255
click to vote
SIGMOD
2008
ACM
16 years 4 months ago
2008
ACM
In some applications such as filling in a customer information form on the web, some missing values may not be explicitly represented as such, but instead appear as potentially va...
253
Voted
SIGMOD
2008
ACM
16 years 4 months ago
2008
ACM
A major problem in detecting events in streams of data is that the data can be imprecise (e.g. RFID data). However, current state-ofthe-art event detection systems such as Cayuga ...
207
click to vote
SIGMOD
2007
ACM
16 years 4 months ago
2007
ACM
An important problem for many location-based applications is the continuous evaluation of proximity relations among moving objects. These relations express whether a given set of ...
216
click to vote
SIGMOD
2007
ACM
16 years 4 months ago
2007
ACM
We consider in this paper a class of Publish-Subscribe (pub-sub) systems called topic-based systems, where users subscribe to topics and are notified on events that belong to thos...
240
click to vote
SIGMOD
2007
ACM
16 years 4 months ago
2007
ACM
Querying XML effectively and efficiently using declarative languages such as XQuery and XPath has been widely studied in both academic and industrial settings. Most RDBMS vendors ...