最大似然函数
source coding
代码语言：javascript
复制# -*- coding:utf-8 -*-
# /usr/bin/python
'''
@Author: Yan Errol @Email:2681506@gmail.com
@Date: 2019-06-03 16:12
@File：
@Describe:
@Evn:
'''
import numpy as np
import tensorflow as tf
import matplotlib.pyplot as plt
import matplotlib as mpl
mpl.rcParams['figure.figsize'] = (15,10)
N = 100
a = tf.placeholder("float")
b = tf.placeholder("float")
c = tf.placeholder("float")
d = tf.placeholder("float")
x = tf.linspace(-5.0, 10.0, num = N, name = "x")
noise = tf.random_normal(shape = [N,], mean = 0, stddev = 50.0, seed = 1)
# y = a*x^3 b*x^2 c*x d
with tf.Session() as sess:
y = sess.run(tf.add(tf.add(tf.add(tf.add(tf.multiply(a,tf.pow(x,3)),tf.multiply(b,tf.pow(x, 2))),tf.multiply(c,x)),d),
