Keras交叉验证：输出广播错误

如何解决Keras交叉验证：输出广播错误

我在应用k倍层折时遇到问题。在下面，您可以找到运行良好的我的体系结构。它由两个信号输入组成，这些信号输入随后在特征提取之后与inputB，inputC和inputD连接：

def small_model2(): 
    
    ampl_signal = Input(shape=(X_train.shape[1:]))
    phase_signal = Input(shape=(X_train_phase.shape[1:]))
    inputA= Input(shape=(1,))
    inputB= Input(shape=(1,))
    inputC= Input(shape=(1,))
    
    concat_signal = concatenate([ampl_signal,phase_signal])
    #x = InputLayer(input_shape=(None,X_train.shape[1:][0],1))(inputA)
    x = Conv1D(64,5,activation='relu',kernel_initializer='glorot_normal')(concat_signal) #,input_shape=(None,3750,n_features)
    x = Conv1D(64,kernel_initializer='glorot_normal')(x)
   # x = Dropout(0.1)(x)
    x = MaxPooling1D(5)(x) 
   # x = Conv1D(128,kernel_initializer='glorot_normal')(x) #,n_features)
   # x = Conv1D(128,kernel_initializer='glorot_normal')(x)
   # x = Dropout(0.1)(x)
   # x = MaxPooling1D(5)(x)   
    x = Conv1D(64,activation='elu',kernel_initializer='glorot_normal')(x)
    x = Conv1D(64,kernel_initializer='glorot_normal')(x)
    #x = Dropout(0.1)(x)
    # x = Dropout(0.2)(x)
    #x = Flatten()(x)
    x = GlobalAveragePooling1D()(x)
    concatenated_features = concatenate([x,inputB,inputC,inputD])#inputD
    x = Dense(64,activation='relu')(concatenated_features)
    #
# Check for the position of the dropout
  #  x = Dropout(0.2)(x)
    x = Dense(n_outputs,activation='sigmoid')(x)

    model = Model(inputs=[ampl_signal,phase_signal,inputD],outputs=x)
    
    #optim = SGD(lr=lr,clipnorm=1.)
    optim = Adam(lr=lr)
    model.compile(loss='binary_crossentropy',optimizer=optim,metrics=['accuracy'])
    #print(model.summary())
    return model

然后，我尝试应用k倍交叉验证：

from sklearn.model_selection import KFold

acc_per_fold = []
loss_per_fold = []


num_folds = 4
kfold = KFold(n_splits=num_folds,shuffle=True)

fold_no = 1


#inputs = np.c_[X_train,X_train_phase,train_moisture,train_temp,train_weight]
#targets = y_train

inputs = np.concatenate(([X_train,train_weight],[X_test,X_val_phase,test_moisture,test_temp,test_weight]),axis=0)
targets = np.concatenate((y_train,y_test),axis=0)

for train,test in kfold.split(inputs,targets):
    model=small_model()
    #history=model.fit([X_train,y_train,#              validation_data = ([X_test,test_weight],#              #validation_data=([X_val,val_weight,val_moisture,val_temp],y_train[val]),#              epochs=100,batch_size=150)
    
    history = model.fit(inputs[train],targets[train],batch_size=batch_size,epochs=no_epochs,verbose=verbosity) 
    scores = model.evaluate([X_val,y_train[val],verbose=0)
#    
    print("%s: %.2f%%" % (model.metrics_names[0],scores[0]))
    print("%s: %.2f%%" % (model.metrics_names[1],scores[1]))
#    
  # Generate generalization metrics
    scores = model.evaluate(inputs[test],targets[test],verbose=0)
    print(f'score for fold {fold_no}: {model.metrics_names[0]} of {scores[0]}; {model.metrics_names[1]} of {scores[1]*100}%')
    acc_per_fold.append(scores[1] * 100)
    loss_per_fold.append(scores[0])    
    
    loss_history =np.array(history.history["loss"])
    accuracy_history= np.array(history.history["acc"])
    val_loss_history = np.array(history.history["val_loss"])
    val_accuracy_history=np.array(history.history["val_acc"])#

    np.savetxt("outputs/accuracy_loss_history_64000-90000_down_5_CNN_lr_"+str(lr)+"_fold_"+str(i)+".txt",np.c_[loss_history,accuracy_history,val_loss_history,val_accuracy_history],delimiter="\t")
    i+=1
    
    model.evaluate([X_test.reshape(len(X_test),5200,1),test_temp],y_test,verbose=0)
    
    fold_no = fold_no +1

但是我仍然遇到广播错误：

ValueError：无法将形状为（1929,6249,1）的输入数组广播为形状（1929）

我知道我的输入似乎没有正确的形状。但是我不明白为什么。我输入与训练神经网络时相同的输入。