With the universal application of surrogate keys in data warehouse creation,this paper presents a method to deal with surrogate keys when mapping XML Schema to data warehouse model.

Firstly this paper introduces the concept of"Initial In terest Confusion",then explain how Search Engine works and abstracts Key Words.

Traditional key word filtering technology meets people s common need, but the flexibility and effect is too limited to recognize or filter the transformed key words.

Research on processing method of large numbers of keywords in ATLAS;

By analyses of searching characteristics of searching network stations formain keywords, their differences have been discussed, fast and accurate searching method hasbeen provided.

The weights of traditional keywords webpage filtering are mainly determined by the frequency of statistical methods.