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» Additive Pattern Database Heuristics
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DKE
2006
110views more  DKE 2006»
13 years 7 months ago
Efficient mining of group patterns from user movement data
In this paper, we present a new approach to derive groupings of mobile users based on their movement data. We assume that the user movement data are collected by logging location ...
Yida Wang, Ee-Peng Lim, San-Yih Hwang
ICDE
2011
IEEE
263views Database» more  ICDE 2011»
12 years 11 months ago
Adding regular expressions to graph reachability and pattern queries
—It is increasingly common to find graphs in which edges bear different types, indicating a variety of relationships. For such graphs we propose a class of reachability queries ...
Wenfei Fan, Jianzhong Li, Shuai Ma, Nan Tang, Ying...
EDBT
2004
ACM
155views Database» more  EDBT 2004»
14 years 7 months ago
Processing Unions of Conjunctive Queries with Negation under Limited Access Patterns
We study the problem of answering queries over sources with limited access patterns. The problem is to decide whether a given query Q is feasible, i.e., equivalent to an executable...
Alan Nash, Bertram Ludäscher
KDD
2008
ACM
135views Data Mining» more  KDD 2008»
14 years 8 months ago
Effective and efficient itemset pattern summarization: regression-based approaches
In this paper, we propose a set of novel regression-based approaches to effectively and efficiently summarize frequent itemset patterns. Specifically, we show that the problem of ...
Ruoming Jin, Muad Abu-Ata, Yang Xiang, Ning Ruan
ENTCS
2008
91views more  ENTCS 2008»
13 years 7 months ago
Towards Concrete Syntax Patterns for Logic-based Transformation Rules
Logic meta-programming in Prolog is a powerful way to express program analysis and transformation. However, its use can be difficult and error-prone because it requires programmer...
Malte Appeltauer, Günter Kniesel