I have data with columns A, B, C as inputs and columns D, E, F, G as outputs. The table has a shape (1000,7). I would like to train the model, validate and test it.
My data:
A = [100, 120, 140, 160, 180, 200, 220, 240, 260, 280];
B = [300, 320, 340, 360, 380, 400, 420, 440, 460, 480];
C = [500, 520, 540, 560, 580, 600, 620, 640, 660, 680];
My desired outcome:
For each combination of A, B, C --> I get D, E, F, G as outputs (for example):
D = 2.846485609
E = 5.06656901
F = 3.255358183
G = 5.464482379)
Also, for each different combination of A, B, C; I have a different set of outputs (D, E, F, G).
My Question: Is it possible to train a neural network, using this experienced network to predict new values of D, E, F, G; for new combination of A, B, C?
The problem falls into Multivariate Regression category since the outputs are continuous value. Therefore, you can train a neural network (NN) having 4 output nodes and input feature vector of size 4. A sample NN model having one hidden layer using tensorfow is as follows:
import itertools
import numpy as np
from sklearn.preprocessing import StandardScaler
from tensorflow.python.keras.layers import Input, Dense
from tensorflow.python.keras.models import Model
A = [100, 120, 140, 160, 180, 200, 220, 240, 260, 280]
B = [300, 320, 340, 360, 380, 400, 420, 440, 460, 480]
C = [500, 520, 540, 560, 580, 600, 620, 640, 660, 680]
X_train = np.array(list(itertools.product(A, B, C)))
# X_train = np.random.random(size=(1000,3))
scaler = StandardScaler()
X = scaler.fit_transform(X_train)
Y_train = np.random.randint(0, 100, size=(1000, 4)).astype(float) # Should load original label
X_test = np.random.random(size=(100, 3))
Y_test = np.random.randint(0, 100, size=(100, 4)).astype(float)
input = Input(shape=(3,))
hidden_layer_1 = Dense(25, activation='relu')(input)
output = Dense(4)(hidden_layer_1)
model = Model(inputs=input, outputs=output)
model.compile(
optimizer='adam',
loss=['mean_squared_error']
)
history = model.fit(X_train, Y_train, epochs=1000, batch_size=8)
result = model.predict(X_test)