| Summary: | Hajj pilgrims need to undergo a proper and
comprehensive training before leaving their mother
countries in order to perform a successful and
rewarding hajj. Despite of being trained, the pilgrims
might not be aware of some rules and regulations that
may affect their hajj rituals or rites if the pilgrims do
not follow them. They may have many queries
pertaining to hajj rituals, which cannot be found in
their guidebooks. They could have the queries while
doing any of the rituals in the middle of the crowded
areas and might need to call the experts to solve the
queries. However if they cannot contact the experts at
the moment, they might not be able to find the solution
immediately. We propose a question and answer
(Q&A) expert system using a knowledge-based
approach to facilitate queries by the hajj pilgrims
either before or while performing their hajj rituals. We
have developed the research prototype on a Web-based
application, which we suggest to be installed on kiosks
located around Mecca or Madinah or in handheld
devices. This paper covers the theoretical aspects of
knowledge-based approach to facilitate queries by hajj
pilgrims. We also discuss some basic examples of how
the approach can be realized in a hajj Q&A system as
a personalized e-hajj guidebook
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