Abstract:

The rapid development of the Internet leads to the explosive increase in the amount of information.How to collect the required information quickly has been a hot topic in both industry and research areas.In recent years, the growing demand for specific information (such as news of specific topics) information should be acquired from some specified sites in a justintime manner.However,they are generally unpredictable,of quicker update frequency,more timesensitive,and therefore more difficult to acquire justintime.This paper proposes a novel approach to tackle this problem,whose efficiency has been demonstrated in practice.

Key words: news acquisition;crawler;justintime