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原创高级编程技术第十三次作业

sklearn作业题：简要意思就是测试朴素贝叶斯，SVM，随机森林三种算法对解决同一个问题的性能分析。步骤1：创建数据集dataset = datasets.make_classification(n_samples=1000, n_features=10) 步骤2：用10重交叉验证对数据集拆分。kf = cross_validation.KFold(1000, n_folds=10, shuff...

2018-06-18 23:53:50 216

原创高级编程技术第十二次作业

本次作业题目来源 https://nbviewer.jupyter.org/github/schmit/cme193-ipython-notebooks-lecture/blob/master/Exercises.ipynb Anscombe's quartetAnscombe's quartet comprises of four datasets, and is rather famous. ...

2018-06-12 16:31:59 165

原创高级编程作业第十一次作业

Exercise 10.1: Least squaresGenerate matrix A ∈ Rm×n with m > n. Also generate some vector b ∈ Rm.Now find x = arg minx ||Ax − b||2.Print the norm of the residual用numpy里的random的rand和mat生成矩阵,最后用最小二乘...

2018-06-04 10:57:07 296

原创高级编程技术第十次作业

Exercise 11.1: Plotting a function Plot the function F(x)=sin2(x-2)e-x^2 over the interval [0,2]. Add proper axis labels, a title, etc.在区间[0,2]画出f(x)并加上适合的轴标签，题目等...

2018-05-28 20:22:48 190

原创高级编程技术第九次作业

exercise 9 Numpy事先声明，这里用到函数前提是安装好numpy和scipy包并在开头引用如下：from numpy import *from scipy.linalg import toeplitzimport timeGenerate matrices A, with random Gaussian entries, B, a Toeplitz matrix, where A ...

2018-05-21 22:12:21 162

原创高级编程技术第八次作业

670. Maximum SwapGiven a non-negative integer, you could swap two digits at most once to get the maximum valued number. Return the maximum valued number you could get.Example 1:Input: 2736Output: 723...

2018-05-06 15:44:53 146

原创高级编程技术第七次作业

第一题：41. First Missing PositiveGiven an unsorted integer array, find the smallest missing positive integer.Example 1:Input: [1,2,0]Output: 3Example 2:Input: [3,4,-1,1]Output: 2Example 3:Input: [7,8...

2018-04-27 18:40:39 174

原创高级编程技术第六周作业

11.1city_functions.pydef get_city_country(City,Country): return City+", "+Countrytest_cities.pyimport unittestfrom city_functions import get_city_countryclass CityTestCase(unittest.TestCase): def ...

2018-04-15 16:38:10 119

原创高级编程技术第五周作业

9.1&9.2class Restaurant: def __init__(self,restaurant_name,cuisine_type): self.restaurant_name=restaurant_name self.cuisine_type=cuisine_type def describe_restaurant(self): print("Our rest...

2018-04-07 22:09:12 179

原创高级编程技术第四周作业

7.2amount=int(input("How many people come to eat? "))if amount>8: print("There is no empty table")else: print("There is a empty table")7.3amount=int(input("Please input a number and i'll figure...

2018-04-01 18:40:44 149

原创高级编程技术第三周作业

5.1food='rice'print("Is food == 'rice' ,i predict true")print(food=='rice')print("Is food == 'pork' ,i predict false")print(food=='pork')animal='dog'print("Is animal == 'dog' ,i predict true")p...

2018-03-25 18:19:34 151

原创高级编程技术第二周作业

3.2names['ljy','lcz','lk','lyj','lzc','lzy','lyf']for people in names: print(people+" hello my friend")3.4-3.7guest=['zhugeliang','lishiming','zhuyuanzhang']for people in guest: print(people.title...

2018-03-18 19:33:29 270

原创高级编程技术第一周作业

1.python主页一上到python主页，首先映入我脑海的就是一系列python的代码，这些代码能很清晰的告诉初学者python的最大特点，那就是简洁，以往在c,c++需要几十行代码的文件，在python只需不到十行就能实现。继续往下浏览，可以找到python的历史版本，点开进去，发现有许多版，这给我一种印象就是python这种语言在高速发展中，与时俱进。在继续看有一些关于pyt...

2018-03-11 16:08:58 176

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