Result merging for Meta-search engine

searching for information on the Internet is not only an essential way to get information, but also a strategic tool to obtain a wide variety of information. Unfortunately, Web is so huge and so unstructured that the collection of specific, fair and useful information becomes a daunting ant time-wasting task. To define information research tool (metasearch engine) which has the aim to combine several sources of information, the main interest should be brought to the fusion step of results from search engines. Several reasons led us to define a fusion method based on user profile. Indeed, the major problem of fusion approaches is that the information is so general that the specific needs of the user could not be fitted.