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DAWAK
2004
Springer
13 years 10 months ago
Categorical Data Visualization and Clustering Using Subjective Factors
Clustering is an important data mining problem. However, most earlier work on clustering focused on numeric attributes which have a natural ordering to their attribute values. Rec...
Chia-Hui Chang, Zhi-Kai Ding
IQIS
2004
ACM
13 years 10 months ago
Mining for Patterns in Contradictory Data
Information integration is often faced with the problem that different data sources represent the same set of the real-world objects, but give conflicting values for specific prop...
Heiko Müller, Ulf Leser, Johann Christoph Fre...
RSFDGRC
2005
Springer
187views Data Mining» more  RSFDGRC 2005»
13 years 10 months ago
Handling Missing Attribute Values in Preterm Birth Data Sets
The objective of our research was to find the best approach to handle missing attribute values in data sets describing preterm birth provided by the Duke University. Five strategi...
Jerzy W. Grzymala-Busse, Linda K. Goodwin, Witold ...
ICNC
2005
Springer
13 years 10 months ago
DNA Computing Approach to Construction of Semantic Model
In this paper, after a new DNA-based semantic model is theoretically proposed, the preliminary experiment on construction of the small test model is successfully done. This model, ...
Yusei Tsuboi, Zuwairie Ibrahim, Nobuyuki Kasai, Os...
EUROCAST
2005
Springer
102views Hardware» more  EUROCAST 2005»
13 years 10 months ago
Similarity Queries in Data Bases Using Metric Distances - from Modeling Semantics to Its Maintenance
Similarity queries in traditional databases work directly on attribute values. But, often similar attribute values do not indicate similar meanings. Semantic background information...
Josef Küng, Roland Wagner
INFOVIS
2005
IEEE
13 years 10 months ago
Multivariate Glyphs for Multi-Object Clusters
Aggregating items can simplify the display of huge quantities of data values at the cost of losing information about the attribute values of the individual items. We propose a dis...
Eleanor Boyle Chlan, Penny Rheingans
ECML
2007
Springer
13 years 10 months ago
A Simple Lexicographic Ranker and Probability Estimator
Given a binary classification task, a ranker sorts a set of instances from highest to lowest expectation that the instance is positive. We propose a lexicographic ranker, LexRank,...
Peter A. Flach, Edson Takashi Matsubara
COLCOM
2008
IEEE
13 years 11 months ago
A Constraint and Attribute Based Security Framework for Dynamic Role Assignment in Collaborative Environments
Abstract. We investigate a security framework for collaborative applications that relies on the role-based access control (RBAC) model. In our framework, roles are pre-defined and...
Isabel F. Cruz, Rigel Gjomemo, Benjamin Lin, Mirko...
EDBT
2008
ACM
169views Database» more  EDBT 2008»
14 years 4 months ago
Efficient online top-K retrieval with arbitrary similarity measures
The top-k retrieval problem requires finding k objects most similar to a given query object. Similarities between objects are most often computed as aggregated similarities of the...
Prasad M. Deshpande, Deepak P, Krishna Kummamuru
SIGMOD
2005
ACM
105views Database» more  SIGMOD 2005»
14 years 4 months ago
Reference Reconciliation in Complex Information Spaces
Reference reconciliation is the problem of identifying when different references (i.e., sets of attribute values) in a dataset correspond to the same real-world entity. Most previ...
Xin Dong, Alon Y. Halevy, Jayant Madhavan