MLA_Learn_Periodic_Functions/code/fonctions_activations_classiques/sin.py

# -*- coding: utf-8 -*-
"""
Created on Wed Nov 24 16:58:44 2021

@author: virgi
"""





import tensorflow as tf
import matplotlib.pyplot as plt
from fonction_activation import *

from Creation_donnee import *
import numpy as np

n=20
#création de la base de donnéé
X,Y=creation_sin(-15,-8,n,1,)
X2,Y2=creation_sin(10,18,n,1,)
X=np.concatenate([X,X2])
Y=np.concatenate([Y,Y2])

n=10000
Xv,Yv=creation_sin(-20,20,n,1)




model_sin=tf.keras.models.Sequential()

model_sin.add(tf.keras.Input(shape=(1,)))

model_sin.add(tf.keras.layers.Dense(512, activation=sin))



model_sin.add(tf.keras.layers.Dense(1))

opti=tf.keras.optimizers.Adam()

model_sin.compile(opti, loss='mse', metrics=['accuracy'])


model_sin.summary()

model_sin.fit(X, Y, batch_size=1, epochs=10, shuffle='True',validation_data=(Xv, Yv))




Y_predis_sin=model_sin.predict(X)
Y_predis_validation_sin=model_sin.predict(Xv)




plt.figure()
plt.plot(X,Y,'x',label='donnée')
plt.plot(Xv,Yv,label="validation")
plt.plot(X,Y_predis_sin,'o',label='prediction sur les donné avec sin comme activation')
plt.plot(Xv,Y_predis_validation_sin,label='prediction sur la validation avec sin comme activation')
plt.legend()
plt.show()