Effective tool for exploring web: An Evaluation of Search engines

Evaluation of search engines is necessary to check the retrieval performance of search engines and to differentiate search engines from one another. The ability to retrieve and to rank the relevant result lists can be done by the process of evaluation and this process can take place in two ways viz; human based methods where one can evaluate search engines manually to calculate the significance of the returned results but this method is time consuming and expensive, while as the second is automatic method where one can make use of various techniques like retrieval measures can be used to assess the performance of search engines