Python detailed process of crawling Coursera course resources, coursera Course Resources
Sometimes we need to add some classic things to our favorites and review them from time to time. Some courses on Coursera are undoubtedly classic. Most of Coursera's finishing courses pr
In Wednesday, we received mass mailings from the Coursera platform, to the effect that Coursera will completely close the Old Course platform on June 30, upgrade to the new course platform, some Old Course resources (course videos
Sometimes we need to put some classic things in the collection, always aftertaste, and Coursera on some of the courses are undoubtedly classic. Most of the end courses in Coursera provide a complete set of teaching resources, including PPT, video and subtitles, which will be very easy to learn when offline. Obviously, we will not go to a file to download a file, Only fools do so, programmers are smart!
Wha
This article mainly introduces the detailed process of Python crawling Coursera course resources. For more information, see some typical things, some Coursera courses are undoubtedly classic. Most of Coursera's finishing courses provide complete teaching resources, including ppt, video, and subtitles. it is very easy to learn offline. Obviously, we won't download
Sometimes we need to collect some classic things, always aftertaste, and Coursera on some of the courses is undoubtedly classic. Most of the completed courses in Coursera provide a complete set of teaching resources, including PPT, video and subtitles, which will be very easy to learn when offline. It is obvious that we will not go to a file to download a file, Only fools do so, programmers are smart!
What
Operating system Learning notes----process/threading Model----Coursera Course note process/threading model 0. Overview 0.1 Process ModelMulti-Channel program designConcept of process, Process control blockProcess status and transitions, process queuesProcess Control----process creation, revocation, blocking, wake-up 、...0.2 threading ModelWhy threading is introducedThe composition of the threadImplementatio
1. What is a special course (specializations)?If you want to learn a major that you do not understand, you can study according to the special course arrangement. Coursera Special Course collects a field of curriculum, and according to the Order of teaching, it is very suitable for the new people who don't feel well.2.
networks and overfitting:
The following is a "small" Neural Network (which has few parameters and is easy to be unfitted ):
It has a low computing cost.
The following is a "big" Neural Network (which has many parameters and is easy to overfit ):
It has a high computing cost. For the problem of Neural Network overfitting, it can be solved through the regularization (λ) method.
References:
Machine Learning video can be viewed or downloaded on Coursera
This series is a personal learning note for Andrew Ng Machine Learning course for Coursera website (for reference only)Course URL: https://www.coursera.org/learn/machine-learning Exercise 7--k-means and PCA
Download coursera-Wunda-Machine learning-all programming practice answers
In this exercise, you will implement th
Took a course on software security at Coursera. Here is a list of readings from the professor:Week 1ReadingsRequired ReadingThe only required reading this week is the following:
Common Vulnerabilities Guide for C programmers. Take note of the unsafe C library functions listed here, and how they is the source of the buffer overflow vulnerabilities. This list is relevant for the project and this week
This is a machine learning course that coursera on fire, and the instructor is Andrew Ng. In the process of looking at the neural network, I did find that I had a problem with a weak foundation and some basic concepts, so I wanted to take this course to find a leak. The current plan is to see the end of the neural network, the back is not necessarily seen.Of
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This is determined by the characteristic value of the feature. There are two kinds of discrete value and continuous value, the distribution of discrete values is Poisson distribution, Bernoulli distribution, the distribution of continuous values is uniform distribution, normal distribution, chi-square distribution and so on. The reason why we assume the two eigenvalues of the above example is normal distribution is because the distribution of the majority of continuous-value variables
Questions -31 point Possible (graded)
Total time limit:
1000ms
Memory Limit:
65536kB
Describe
Write a two-dimensional array class Array2, so that the following program output is:
0,1,2,3,
4,5,6,7,
8,9,10,11,
Next
0,1,2,3,
4,5,6,7,
8,9,10,11,
Program:
#include
Add your code here
int main () { Array2 a (3,4); int i,j; fo
function and map the given set to another set. The signature is as follows:
def map(s: Set, f: Int => Int): Set
The second parameter f is used to map the elements of the original set to the functions of the new set (first-class citizen !)
The question looks simple, just to judge whether the elements in s are equal to the input integer after f ing.
This includes two steps:
1. Is there any element in s that meets a specific condition (assertion )?
2. The specific condition (assertion) is mapped t
intoScoreValues(3,'3-105', -)Insert intoScoreValues(4,'3-105', -)Insert intoScoreValues(5,'3-105', -)Insert intoScoreValues(6,'3-105', -)--Business: To ensure the complete implementation of the entire process, all without problems, unified submission, once there is a problem, back to the origin. Like bank transfers.Begin Tran--z The start of the transaction--start writing the process statement--After the statement is finishedIf @ @ERROR >0Rollback tran--ROLLBACK TRANSACTIONElseCommit Tran--
This text has been reprinted online, and some SQL statements are suitable for use in application systems. Some "reports" have a heavier feeling, mainly to review the former.
This text has been reprinted online, and some SQL statements are suitable for use in application systems. Some "reports" are more likely to be used, mainly to review the former.
50 common SQL
50 common SQL statementsStudent (S #, Sname, Sage, Ssex) Student tableCourse (C #, Cname, T #) CurriculumSC (S #, C #, score) Orders tableTeacher (T #, Tname) Instructor tableProblem:1. query the student ID of all students whose score is higher than that of the "002" course;Select a. S # from (select s #, score from SC where C # = '001') a, (select s #, scoreFrom SC where C # = '002') BWhere a. score> B. sc
50 common SQL statements
Student (S #, Sname, Sage, Ssex) Student tableCourse (C #, Cname, T #) CurriculumSC (S #, C #, score) Orders tableTeacher (T #, Tname) Instructor table
Problem:1. query the student ID of all students whose score is higher than that of the "002" course;Select a. S # from (select s #, score from SC where C # = '001') a, (select s #, scoreFrom SC where C # = '002') BWhere a. score> B.
Tags: blog use problem div code HTML Management logTo manage the job training information, establish 3 tables:S (S#,SN,SD,SA) S#,sn,sd,sa respectively represents the student number, the student name, the unit, the Student Age C (C#,CN) C#,CN respectively represents the course number, the course name SC (s#,c#,g) S#,c#,g respectively represents the student number, the elective
course (-59) Good (-80) Excellent (-100) Select Subject, (selectcountfromwhere and as failed, ( Select Count from where between and and as benign, (selectcountfromwhere and as excellent from Group by subject 13. Mathematics: Zhang San (50 points), John Doe (90 points), Harry (90 points), Zhao Liu (76 points) Declare @s varchar (1000) Set @s='select@s =@s+', '+name+' ('+convert (varchar(), score) +' points 'fromwhere subject=' mathematics ' Set
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