计算机应用与软件
計算機應用與軟件
계산궤응용여연건
COMPUTER APPLICATIONS AND SOFTWARE
2014年
1期
271-274
,共4页
BP神经网络%仿真%最优化算法%LM算法
BP神經網絡%倣真%最優化算法%LM算法
BP신경망락%방진%최우화산법%LM산법
BP neural network%Simulation%Optimisation algorithm%LM algorithm
为了解决传统神经网络实际应用中计算复杂、耗时过长等问题,在LM(Levenberg-Marquardt)算法的基础上,结合数学最优化理论,找出三次收敛的改进型LM算法,且将其应用于BP神经网络。利用一组火灾现场数据,通过Matlab仿真对改进型LMBP算法和标准LMBP算法从收敛时间和仿真曲线拟合度两方面进行比较。结果表明改进型LMBP算法在收敛时间和拟合度两方面都有更好的效果,且该算法具有一般性,可以通过获取国民生产中各种应用场景的样本,采用该算法进行预测,更好地指导生产。
為瞭解決傳統神經網絡實際應用中計算複雜、耗時過長等問題,在LM(Levenberg-Marquardt)算法的基礎上,結閤數學最優化理論,找齣三次收斂的改進型LM算法,且將其應用于BP神經網絡。利用一組火災現場數據,通過Matlab倣真對改進型LMBP算法和標準LMBP算法從收斂時間和倣真麯線擬閤度兩方麵進行比較。結果錶明改進型LMBP算法在收斂時間和擬閤度兩方麵都有更好的效果,且該算法具有一般性,可以通過穫取國民生產中各種應用場景的樣本,採用該算法進行預測,更好地指導生產。
위료해결전통신경망락실제응용중계산복잡、모시과장등문제,재LM(Levenberg-Marquardt)산법적기출상,결합수학최우화이론,조출삼차수렴적개진형LM산법,차장기응용우BP신경망락。이용일조화재현장수거,통과Matlab방진대개진형LMBP산법화표준LMBP산법종수렴시간화방진곡선의합도량방면진행비교。결과표명개진형LMBP산법재수렴시간화의합도량방면도유경호적효과,차해산법구유일반성,가이통과획취국민생산중각충응용장경적양본,채용해산법진행예측,경호지지도생산。
In order to solve the practical problems of traditional neural network application in computation complexity and long time consu-ming,on the basis of LM algorithm and combined with mathematical optimisation theory,we find out the improved LM algorithm with three convergences and apply it to BP neural network.Moreover,by using a set of data got from the scene of the fire,we compare the improved LMBP algorithm and the standard LMBP algorithm through Matlab simulation in two aspects of convergence time and simulation curve fitting. Experiments show that the improved LMBP algorithm has better effect than the standard LMBP algorithm in these two aspects.The improved LMBP algorithm also has the generality,it can be used to predict for better guiding the production by obtaining the samples of various scenari-os in national product.