互联网的迅速发展和广泛普及导致网上信息爆炸性增长。据权威机构统计,目前网上约有数十亿的网页,甚至有些专家宣称网页总数已达5500亿,这一数字仍然在不断地快速增长。如何在庞大的互联网上获得有价值的信息已成为网民日益关注的问题。搜索技术的出现为网民快速找到所需信息带来 The rapid development and widespread adoption of the Internet have led to an explosive growth in online information. According to authoritative statistics, there are currently billions of web pages on the Internet, and some experts claim that the total number of web pages has reached 550 billion. This figure is still rapidly growing. How to get valuable information on the vast Internet has become a growing concern for Internet users. The emergence of search technology for Internet users to quickly find the information they need