信息作为客观世界的三大要素之一,正越来越多地受到人们的重视。信息受到人们如此的重视,缘于信息对人类社会生存和发展、人类文明和知识构建的巨大作用,而这一作用集中体现在信息的增值作用上。从信息所具有的转换性、传递性、共享性、时效性、无限性等特性中,我们可以看出,信 As one of the three major elements of the objective world, information is receiving more and more attention. Information is so valued by people because of the tremendous role that information can play in the survival and development of human society and in the construction of human civilization and knowledge. This role is embodied in the value-added effect of information. From the characteristics of information such as conversion, transitivity, sharing, timeliness and infinity, we can see that the letter