A Natural Language Processing Approach for Knowledge Acquisition An Approach for Knowledge Enhancement Web-Based Expert System for Civil Service Regulations: RCSES Semantic web based Approach to learn and update Learner Profile in Adaptive E-Learning Agent of Healthcare system based on Semantic Web Technology Adaptive E-Learning System based on Semantic Web and Fuzzy Clustering Using Semantic Web to Support Adaptive E-Learning Semantic Web Supporting Adaptive E-Learning to Build and Represent Learner Model Semantic Retrieval Approach for Web Documents Using Semantic Web to support Advanced Web-Based Environment An Approach to improve the Representation of the User Model in the Web-Based Systems Web-based Semantic and Personalized Information Retrieval Semantic Retrieval and Recommendation in Adaptive E-Learning System Adaptive E-learning System based on Semantic Search and Recommendation in the Arab World Proposed approach to build Semantic Learner Model in adaptive E-Learning Agent for Documents Clustering using Semantic-based Model and Fuzzy Personalized Semantic Retrieval and Summarization of Web based Documents Building Learning Repository based on Semantic and Shareable Learning Objects