TensorFlow是Google設計的開源Python庫,用於開發機器學習模型和深度學習神經網絡。
polyval()用於計算多項式的元素明智值。
用法:tensorflow.math.polyval( coeffs, x, name)
參數:
- coeffs:它是一個列表張量,表示多項式的係數。
- x:它是代表多項式變量的張量。
- name(optional):它定義了操作的名稱。
返回值:它返回一個張量。
如果coeffs是具有n個值的張量,而x是張量,則P(x)是n階多項式,其定義為:
p(x) = coeffs[n-1] + coeffs[n-2] * x + ... + coeffs[0] * x**(n-1)
範例1:
Python3
# importing the library
import tensorflow as tf
# Initializing the input tensor
coeffs = [-1, 2, 3]
x = tf.constant([7], dtype = tf.int32)
# Printing the input tensor
print('coeffs:', coeffs)
print('x:', x)
# Calculating Result
res = tf.math.polyval(coeffs, x)
# Printing the result
print('Result:', res)
輸出:
coeffs: [-1, 2, 3] x: tf.Tensor([7], shape=(1, ), dtype=int32) Result: tf.Tensor([-32], shape=(1, ), dtype=int32)
範例2:
Python3
# importing the library
import tensorflow as tf
# Initializing the input tensor
coeffs = [-1, 2, 3]
x = tf.constant([7, 2], dtype = tf.int32)
# Printing the input tensor
print('coeffs:', coeffs)
print('x:', x)
# Calculating Result
res = tf.math.polyval(coeffs, x)
# Printing the result
print('Result:', res)
輸出:
coeffs: [-1, 2, 3] x: tf.Tensor([7 2], shape=(2, ), dtype=int32) Result: tf.Tensor([-32 3], shape=(2, ), dtype=int32)
注:本文由純淨天空篩選整理自aman neekhara大神的英文原創作品 Python – tensorflow.math.polyval()。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。