我有一个这种形状的数据库: (1400000, 44)
输出第 44 列。
所有数字都是浮点数,介于 0 和 1 之间。我使用了如下所示的 Tensorflow,但损失函数为非且 acc 为零。
# Create network with Keras
import tensorflow as tf
from keras.models import Sequential
from keras.layers import Dense
import numpy as np
dataset=np.loadtxt("Dataset5.txt")
s=dataset.size
tr_size=int( 0.7*s)
X = dataset[0:tr_size,0:43]
Y = dataset[0:tr_size,43]
# create model
model = Sequential()
model.add(Dense(64, input_dim=43, init='uniform', activation='relu'))
model.add(Dense(16, init='uniform', activation='relu'))
model.add(Dense(4, init='uniform', activation='sigmoid'))
model.add(Dense(1, init='uniform', activation='relu'))
# Compile model
model.compile(loss='mean_squared_error', optimizer='adam', metrics=['accuracy'])
# Fit the model
model.fit(X, Y, epochs=150, batch_size=1000, verbose=2)
# calculate predictions
predictions = model.predict(X)