fire size class meaning in English

火灾等级（按火灾范围）
火灾规模类别

Before the bp neural net forecast fire size class , it needs a process of studying from sample data . the neural net adjusts the weight value and threshold value according to the sample so as to give the linking weight value and threshold to low the difference between output from itself and the expected value
Bp网络在应用于预测预报之前，需要一个网络学习过程，网络根据输入的训练（学习）样本进行自适应、自组织，确定各神经元的连接权w和阈值。
The forest fire size class forecasting may success through many times practices if the atmosphere circulating current index and fire index are known . in the web , subscribers may forecast the class of the forest fire size using the program in the local database and get the interesting regional view which is shown by the gis software
本文实现了在提供地理空间数据的本地数据库的森林火险的预测，在基于网络环境下，用户可以在预测程序中得到森林火险的等级，并能使得地理软件显示出要预测地区的森林火险的视图。