Das, Subarna Kumar(INFLIBNET Center, November 9, 2006)
[more]
[less]
Abstract:
Meta search engines are powerful tools that search multiple search engines simultaneously.
Unlike crawler-based search engines such as Google, AllTheWeb, AltaVista
and others, meta search engines generally do not build and maintain their own web
indexes. Instead, they use the indexes built by others, aggregating and often postprocessing
results in unique ways. Meta search engines accept your query, and send it
out to multiple search engines in parallel. They are often quite fast, using private
“backdoor” servers made available by the search engines they query. They get this
privileged status thanks to revenue sharing agreements. There are several advantages
to using meta search engines, though they’re not always the most appropriate tool. The
most obvious advantage is that you can get results from multiple search engines without
having to visit each in turn. Apart from the time savings, there is some evidence that
this gives your search a broader scope, since each individual search engine’s index
differs from all others. Present paper attempts to highlights the role of meta search
engine in web- based information retrieval