• Publications
  • Influence
Improving Classification Accuracy of Decision Trees for Different Abstraction Levels of Data
TLDR
The proposed method adopts the notion of fuzzy relation for solving the multiple abstraction level problem in decision tree classification, and shows that the proposed method reduces classification error rates significantly when multiple abstraction levels of data are involved.
A Flexible Database Security System Using Multiple Access Control Policies
TLDR
A database security system that can individually control user access to data groups of various sizes and is suitable for the situation where a user's access privilege to arbitrary data is changed frequently is proposed.
Immune-Based Framework for Exploratory Bio-information Retrieval from the Semantic Web
TLDR
An immune-based framework for adaptive query expansion in the semantic web, where exploratory queries, common in biological information retrieval, can be answered more effectively, is proposed.
Decision Tree Classifier for Multiple Abstraction Levels of Data
TLDR
The proposed method accommodates the generalization/specialization relationship between data values in both of the construction and the class assignment phase of decision tree classification and reduces classification error rates significantly when multiple abstraction levels of data are involved.
Database Security System supporting Access Control for Various Sizes of Data Groups
TLDR
A database security system that can individually control user access to data groups of various sites and is suitable for the situation where the user`s access privilege to arbitrary data is changed frequently is proposed.
A Flexible Database Security System using Improved Role Hierarchy
Decision Trees for Multiple Abstraction Levels of Data
TLDR
The proposed method accommodates the generalization/specialization relationship between data values in both of the construction and the class assignment phases of decision tree classification and reduces classification error rates significantly when multiple abstraction levels of data are involved.
A flexible database security system using multiple access control policies
TLDR
A database security system that can individually control user access to data groups of various sizes and is suitable for the situation where a user's access privilege to arbitrary data is changed frequently is proposed.