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WIDM
2003
ACM
16 years 15 days ago
Datarover: a taxonomy based crawler for automated data extraction from data-intensive websites
The advent of e-commerce has created a trend that brought thousands of catalogs online. Most of these websites are “taxonomy-directed”. A Web site is said to be ``taxonomydire...
Hasan Davulcu, S. Koduri, Saravanakumar Nagarajan
ICDM
2002
IEEE
133views Data Mining» more  ICDM 2002»
16 years 6 days ago
Estimating the number of segments in time series data using permutation tests
Segmentation is a popular technique for discovering structure in time series data. We address the largely open problem of estimating the number of segments that can be reliably di...
Kari Vasko, Hannu Toivonen
198
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MCS
2001
Springer
15 years 11 months ago
Finding Consistent Clusters in Data Partitions
Abstract. Given an arbitrary data set, to which no particular parametrical, statistical or geometrical structure can be assumed, different clustering algorithms will in general pr...
Ana L. N. Fred
SIGMOD
1999
ACM
98views Database» more  SIGMOD 1999»
15 years 11 months ago
Self-tuning Histograms: Building Histograms Without Looking at Data
In this paper, we introduce self-tuning histograms. Although similar in structure to traditional histograms, these histograms infer data distributions not by examining the data or...
Ashraf Aboulnaga, Surajit Chaudhuri
ISSTA
1998
ACM
15 years 11 months ago
Automatic Test Data Generation Using Constraint Solving Techniques
Automatic test data generation leads to identify input values on which a selected point in a procedure is executed. This paper introduces a new method for this problem based on co...
Arnaud Gotlieb, Bernard Botella, Michel Rueher