Abstract: To Cope with frequently occurred issues of network quality safety,this paper aims to study information earlywarning for network quality safety by using BP neutral network. Data source is all posts about Shengyuan milk powder downloaded from Tianya forum. BP neutral network includes three layers: input layer,hidden layer,and output layer.Eight indicators includes posts per unit,cumulative posts,posting frequency per unit,cumulative posting frequency,reply per unit,cumulative reply,reply frequency per unit,cumulative reply frequency are constructed,so as to five earlywarning levels including safety and mild warning,middle warning,serious warning,very serious warning. The empirical study finds out that taking advantage of BP neutral network has an efficient impact on earlywarning. However,the earlywarning results are lower than expected.And the earlywarning sensitivity is to be strengthened.
Key Words: BP Neutral Network; Network Quality Safety; Information Earlywarning