Some of these systems
are domain specific and operate in chemistry, such as ChemSpell (Mitton, 1996;
Zamora, 1978, 1980).
With the recent explosion of portals and ever expanding health information searching
via medical/health portals, the question of the effectiveness of these health portals
remains to be answered. Despite major advances and efforts to make portals user
friendly, the research shows (Moon, 2005; Moon & Burstein, 2005) that most portals
still lack essential functions for assisting users with information retrieval and
hence losing potential users from existing portals. Even though the medical portals
analyzed had the answers to users??™ queries, the major problem lay in the portal??™s
inability to handle misspelling, thereby lacking an essential provision for assisting
users (Moon & Fisher, 2005).
Moon and Burste n
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Another issue is that some major search engines provide a list of words that are
not, however, always relevant to the user??™s query.
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