Kanoksak Wattanachote creator Haddawy, Peter Chairperson Tripathi, Nitin Kumar Examination Committee Tien, Hoang Le Examination committee Telephone Organization of Thailand Scholarship donor text series technical report th Bangkok Asian Institute of Technology 2001 continuing eng 41, 14 p. In the world of web site design and feature, personalization is the process of tailoring or customizing pages to meet or answer to the nearest individual users' characteristics or preferences. The process is commonly used to enhance customer service or e-commerce sales. Personalization for others is sometimes developed to be used as a recommender system that provides personalized suggestions about item that users will find interesting. In this research study, the purpose why this recommender system is used will be recognized because it helps a lot in spatial decision-making. Spatial decision-making is an everyday activity: for example when selecting a location to live, choosing a land development strategy, allocating resources, or managing infrastructure. Vacation planning also uses of spatial decisions by selecting a planned location to travel. A personalization technique that is suitable and suggested in this research study for the recommender system to generate is called Computer-Assisted Self-Explication (CASE). CASE is an online system that asks users questions about user's interests. It then relates to a large database of possible choices and reflects the complicated set of user interests. The goal is to help users narrow their choices from all of possibilities to a few highly ranked alternatives. In this study, CASE and spatial decision-making will not only comprise a part of GIS that are implemented together to help TAT but more importantly, will meet TAT's goal and policy. A research study submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Advanced Technologies Research Studies Project Report (M. Sc.) - Asian Institute of Technology, 2001 Vacations Planning Asian Institute of Technology. http://203.159.5.9/ait-thesis/detail.php?q=B07097 http://203.159.5.9/ait-thesis/detail.php?q=B07097 020510 20260819090010.0