Question

我有30个不同时间序列的数据帧，这些数据帧具有相同的特征大小（6），但不同的时间序列长度（> 500000）。每个数据帧都有一个必须预测的ID。这应该是一个回归问题。即使我没有ID 5的时间序列（总共1500个ID），网络也应该输出接近真实ID的ID。

我希望神经网络学习一个ID的时间序列，然后继续下一个ID。为了进行预测，我想输入一个较小的时间，神经网络应该输出一个ID。

seed = 11
np.random.seed(seed)

import_new_Data = True
if import_new_Data:
    csv_files = glob.glob('/home/lta-user/PycharmProjects/regression/Testdaten_2/*.csv')
    list_data = []
    label_list = []

    sum = 0
    ##import the datasets and concat them to one dataset
    for path in csv_files:
        dta = dta.read_sets(path)
        list_data.append(dta)

    df = pd.concat(list_data, ignore_index=True)  # concat the data to one DataFrame



labels = df.pop(df.columns[len(df.columns)-1])
labels = labels.values
df = df.values


#the data is normalized in a range from 0 to 1
scaler = MinMaxScaler(feature_range=(-1, 1))
df = scaler.fit_transform(df)

df = df.reshape(1,df.shape[0],df.shape[1])


normed_train_data, normed_test_data, train_labels, test_labels = model_selection.train_test_split(df, labels,
                        train_size=0.75, test_size=0.25, random_state=seed)


#----------------------------------------------------------------------------------------------------------------------
#building the model
#----------------------------------------------------------------------------------------------------------------------

def build_model():
  model = keras.Sequential([
    #Creating a fully connected layer
    #1. Hidden-Layer: Fully connected with ReLu as activation function
    layers.LSTM(12, activation='relu', input_shape = (?,?,?),return_sequences=True),
    #Output-Layer: Fully connected with an linear activation function
    layers.Dense(1, kernel_initializer='normal', activation='linear')
  ])

  #Choosing the Adam-Optimizer with an learning rate of 0.001
  optimizer = tf.keras.optimizers.Adam(0.001)

  model.compile(loss='mean_squared_error', optimizer=optimizer, metrics=['mean_absolute_error', 'mean_squared_error'])
  return model

#create network
model = build_model()

model.summary()        #prints a description of the model

##----------------------------------------------------------------------------------------------------------------------

如何为LSTM塑造多个次温度数据

0 个答案: