مقايسه توانايي موتورهاي كاوش اينترنت در بازيابي اطلاعات پزشكي

A comparative study of Internet search engines capability in medical information retrieval.

Background and Aim : Most of internet users have a big question in their mind today that how to search the informations they need or which of the search engines is the best to help them to do the Job. This study is to determine the capability of five significant search engines in Gonabad site . Materials and methods : This descriptive and analytical study was done by searching , gathering and medical information survey using five significant search engines with the help of Boolean operators(And , Or , Not) ,Math operators ( + ,-) and one space and non-space between. Result: The results showed that all five engines (YAHOO,GOOGLE, ALTAVISTA EXCITE,LOOKSMART ) try to search the given keywords or phrases and all use Boolean and Math operators , and Yahoo search engine is the first from quantitive point of view . Conclusion : Considering the most searched web pages by Yahoo and the least for Altavista ,but there is not any significant difference between them and for subjective search LOOKSMART seems more useful than EXCITE .