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With the development of personalized service technology, analyze the status of deep Web database and personalized service, put forward one new method of personalized service according to user behavior currently in deep Web database, discuss the key technology. The experiment shows the system can conquer the limitation of personalized service too depend on the user behavior.
Put forward a new information retrieval method based on the query specificity after analyzing the existing problems of information retrieval system. The experiments show that the system has better query performance. Avoid the similarity documents in the first few pages effectively, when the system return a larger set of query documents.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.