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SIGMOD
2008
ACM
92views Database» more  SIGMOD 2008»
16 years 6 months ago
Information extraction challenges in managing unstructured data
Over the past few years, we have been trying to build an end-to-end system at Wisconsin to manage unstructured data, using extraction, integration, and user interaction. This pape...
AnHai Doan, Jeffrey F. Naughton, Raghu Ramakrishna...
WSCG
2004
170views more  WSCG 2004»
15 years 8 months ago
Geo-Spatial Data Viewer: From Familiar Land-covering to Arbitrary Distorted Geo-Spatial Quadtree Maps
In many application domains, data is collected and referenced by its geo-spatial location. Spatial data mining, or the discovery of interesting patterns in such databases, is an i...
Daniel A. Keim, Christian Panse, Jörn Schneid...
WWW
2004
ACM
16 years 7 months ago
Visualising student tracking data to support instructors in web-based distance education
This paper presents a novel approach of using web log data generated by course management systems (CMS) to help instructors become aware of what is happening in distance learning ...
Riccardo Mazza, Vania Dimitrova
KDD
1998
ACM
145views Data Mining» more  KDD 1998»
15 years 11 months ago
Aggregation of Imprecise and Uncertain Information for Knowledge Discovery in Databases
We consider the problem of aggregation for uncertain and imprecise data. For such data, we define aggregation operators and use them to provide information on properties and patte...
Sally I. McClean, Bryan W. Scotney, Mary Shapcott
ICDE
2004
IEEE
155views Database» more  ICDE 2004»
16 years 8 months ago
BIDE: Efficient Mining of Frequent Closed Sequences
Previous studies have presented convincing arguments that a frequent pattern mining algorithm should not mine all frequent patterns but only the closed ones because the latter lea...
Jianyong Wang, Jiawei Han