Key to Exercises (Units 1-8) Unit 1 Part I Pre-reading Task scr ipt for the recording: Have you ever heard of the pop singer, John Lennon? Here he is singing a song he wrote for his son. It's called Beautiful Boy. Close your eyes Have no rear The mo
About A Part-Of-Speech Tagger (POS Tagger) is a piece of software that reads text in some language and assigns parts of speech to each word (and other token), such as noun, verb, adjective, etc., although generally computational applications use mor
两个混沌分叉图
前提：
import matplotlib.pyplot as plt
import numpy as np
singer map
python代码
def singermap10(x0, a, b, iters):
x = x0
u = np.arange(a, b, 0.001)
for i in range(iters):
x = u * (7.86 * x - 23.31 * x ** 2 + 28.75 * x ** 3 - 1
