分类预测 | MATLAB实现WOA-CNN-LSTM鲸鱼算法优化卷积长短期记忆网络数据分类预测
分类效果
基本描述
1.Matlab实现WOA-CNN多特征分类预测，多特征输入模型，运行环境Matlab2018b及以上；
2.基于鲸鱼算法(WOA)优化卷积神经网络(CNN)分类预测，优化参数为，学习率，批处理，正则化参数；
3.多特征输入单输出的二分类及多分类模型。程序内注释详细，直接替换数据就可以用；
程序语言为matlab，程序可出分类效果图，迭代优化图，混淆矩阵图；
4.data为数据集，输入12个特征，分四类；main为主程序，其余为函数文件，无需运行，可在下载区获取数据和程序内容。
程序设计
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完整程序和数据获取方式1：私信博主，同等价值程序兑换；
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完整程序和数据下载方式3(订阅《智能学习》专栏，同时获取《智能学习》专栏收录程序2份，数据订阅后私信我获取)：MATLAB实现WOA-CNN鲸鱼算法优化卷积神经网络数据分类预测
%% 优化算法参数设置
SearchAgents_no = 3; % 数量
Max_iteration = 5; % 最大迭代次数
dim = 3; % 优化参数个数
%% 建立模型
lgraph = [
convolution2dLayer([1, 1], 32) % 卷积核大小 3*1 生成32张特征图
batchNormalizationLayer % 批归一化层
reluLayer % Relu激活层
dropoutLayer(0.2) % Dropout层
fullyConnectedLayer(num_class, "Name", "fc") % 全连接层
softmaxLayer("Name", "softmax") % softmax激活层
classificationLayer("Name", "classification")]; % 分类层
%% 参数设置
options = trainingOptions('adam', ... % Adam 梯度下降算法
'MaxEpochs', 10,... % 最大训练次数
'MiniBatchSize',best_hd, ...
'InitialLearnRate', best_lr,... % 初始学习率为0.001
'L2Regularization', best_l2,... % L2正则化参数
'LearnRateSchedule', 'piecewise',... % 学习率下降
'LearnRateDropFactor', 0.1,... % 学习率下降因子 0.1
'LearnRateDropPeriod', 400,... % 经过800次训练后 学习率
%% 训练
net = trainNetwork(p_train, t_train, lgraph, options);
%% 预测
t_sim1 = predict(net, p_train);
t_sim2 = predict(net, p_test );
%_________________________________________________________________________%
% Whale Optimization Algorithm (WOA) source codes demo 1.0
% The Whale Optimization Algorithm
function [Best_Cost,Best_pos,curve]=WOA(pop,Max_iter,lb,ub,dim,fobj)
% initialize position vector and score for the leader
Best_pos=zeros(1,dim);
Best_Cost=inf; %change this to -inf for maximization problems
%Initialize the positions of search agents
Positions=initialization(pop,dim,ub,lb);
curve=zeros(1,Max_iter);
t=0;% Loop counter
% Main loop
while t<Max_iter
for i=1:size(Positions,1)
% Return back the search agents that go beyond the boundaries of the search space
Flag4ub=Positions(i,:)>ub;
Flag4lb=Positions(i,:)<lb;
Positions(i,:)=(Positions(i,:).*(~(Flag4ub+Flag4lb)))+ub.*Flag4ub+lb.*Flag4lb;
% Calculate objective function for each search agent
fitness=fobj(Positions(i,:));
% Update the leader
if fitness<Best_Cost % Change this to > for maximization problem
Best_Cost=fitness; % Update alpha
Best_pos=Positions(i,:);
end
end
a=2-t*((2)/Max_iter); % a decreases linearly fron 2 to 0 in Eq. (2.3)
% a2 linearly dicreases from -1 to -2 to calculate t in Eq. (3.12)
a2=-1+t*((-1)/Max_iter);
% Update the Position of search agents
for i=1:size(Positions,1)
r1=rand(); % r1 is a random number in [0,1]
r2=rand(); % r2 is a random number in [0,1]
A=2*a*r1-a; % Eq. (2.3) in the paper
C=2*r2; % Eq. (2.4) in the paper
b=1; % parameters in Eq. (2.5)
l=(a2-1)*rand+1; % parameters in Eq. (2.5)
p = rand(); % p in Eq. (2.6)
for j=1:size(Positions,2)
if p<0.5
if abs(A)>=1
rand_leader_index = floor(pop*rand()+1);
X_rand = Positions(rand_leader_index, :);
D_X_rand=abs(C*X_rand(j)-Positions(i,j)); % Eq. (2.7)
Positions(i,j)=X_rand(j)-A*D_X_rand; % Eq. (2.8)
elseif abs(A)<1
D_Leader=abs(C*Best_pos(j)-Positions(i,j)); % Eq. (2.1)
Positions(i,j)=Best_pos(j)-A*D_Leader; % Eq. (2.2)
end
elseif p>=0.5
distance2Leader=abs(Best_pos(j)-Positions(i,j));
% Eq. (2.5)
Positions(i,j)=distance2Leader*exp(b.*l).*cos(l.*2*pi)+Best_pos(j);
end
end
end
t=t+1;
curve(t)=Best_Cost;
[t Best_Cost]
end
参考资料
[1] https://blog.csdn.net/kjm13182345320/article/details/129036772?spm=1001.2014.3001.5502
[2] https://blog.csdn.net/kjm13182345320/article/details/128690229
