Design of a Desktop Search Engine

Currently the main desktop search engines lack the good user experience,and they can not build index instantly,and they have high resources occupation rate.So the thesis designs a smart,powerful and fast desktop search engine that has the better user experience.It supports the function of re-retrival of search results.Apart from this,it has low resources occupation rate,including cpu,memory and disk.And the thesis designs three types of indexes that ensure the real-time and recall ratio of the desktop search engine.