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would the Vectorize this code to run without all for loops? Check all the Apply. A: v = A * x; B: v = Ax; C: V =x ' * A; D: v = SUM (A * x); Answer: A. v = a * x; v = ax:undefined function or variable ' Ax '. 4.Say you has a vectors v and Wwith 7 elements (i.e., they has dimensions 7x1). Consider the following code: z = 0; For i = 1:7 Z = z + V (i) * W (i) End Which of the following vectorizations correctly compute Z? Check all the Apply.

(w ')Description W over fitting3 Sources of errorNoise, Bias, Variance1. Noise NoiseOf an inherent, irreducible, or reduced nature.　　　2, Bias Deviation　　　　　　The simpler the model, the greater the deviation　　The more complex the model, the smaller the deviation3. Variance Variance　　　　Simple model, small variance　　Complex model, large variance　　Deviations and variance tradeoffs, deviations and variances cannot be calculated　　　　Training error and the amount of test data, fixed model complexity, a

-Normal equationSo far, the gradient descent algorithm has been used in linear regression problems, but for some linear regression problems, the normal equation method is a better solution.The normal equation is solved by solving the following equations to find the parameters that make the cost function least:Assuming our training set feature matrix is x, our training set results are vector y, then the normal equation is used to solve the vector:The following table shows the data as an example:T

Week 4 Quizhelp Center Warning:the hard deadline has passed. You can attempt it, Butyou won't get credit for it. You are are welcome to try it as a learning exercise. In accordance with the Coursera Honor Code, I certify This answers here are I own work. Question 1 Which of the following is nottrue about GFS? The GFS keeps multiple replicas of the same file chunk. The file data transfer happens directly between the GFS client and the GFS chunkservers

Week 2 Quizhelp Center Warning:the hard deadline has passed. You can attempt it, but and you won't be. You are are welcome to try it as a learning exercise. In accordance with the Coursera Honor Code, I certify this answers here are I own work. Question 1 Suppose a query has a total of 4 relevant documents in the collection. System A and System B have each retrieved, and the relevance status of the ranked lists is shown below: System A: [-----------]

See the lesson in the content is to use GET request to crawl the course, their own practice when the discovery has been changed to post request, the following startOpen Course PageI use the Firefox, then is F12, click on the network, there may be many packages, but do not affect, click Delete on the line, and then click on the second page, other pages can also be seen, there is a total of 17 pagesThen there will be a lot of packages, find the following, click to viewClick to see the message head

CoursesTime limit:20000/10000 MS (java/others) Memory limit:65536/32768 K (java/others)Total submission (s): 4233 Accepted Submission (s): 2014Problem Descriptionconsider A group of N students and P courses. Each student visits zero, one or more than one courses. Your task is to determine whether it was possible to form a committee of exactly P students that satisfies simultaneously t He conditions:. Ever

Courses Time limit:20000/10000 MS (java/others) Memory limit:65536/32768 K (java/others)Total submission (s): 3805 Accepted Submission (s): 1815 Problem Description Consider a group of N students and P courses. Each student visits zero, one or more than one courses. Your task is to determine whether it was possible to form a committee of exactly P students th

Buy Oracle Database Course package and enjoy 85 discount!!Package Address: http://edu.51cto.com/pack/view/id-807.htmlPerformance optimization for Oracle 11g R2 databaseDatabase performance problem is the most discussed topic in database field, because it involves database principle, IO storage, server performance, foreground application and so on, so the performance problem is very test the optimization of internal strength. This course will describe the tuning options for Oracle databases in a

Powershell_ 0 Basic Self-study courses _5_ the basics of customizing the PowerShell environment and PowerShellAs far as I know, the cmd shell under Windows can change the environment variables in addition to modifying the system parameters, its environment is relatively difficult to customize, and in the Linux environment, you can modify/ Some configuration files in the ETC directory to achieve the purpose of configuring the shell environment. Perhaps

Test instructionsP-Gate course, n students. For each course, students are asked whether they can choose a class representative for each course. The class representative must be the student who has chosen the course and each student can only be a subject.ExercisesAn introductory question for the Hungarian algorithm.#include #include#include#includeusing namespacestd;Const intMAXN =1005;intT;intK, S;intFlag;intp, N;intVIS[MAXN];intMatch[maxn];vectorint>G[MAXN];voidinit () {flag=0; memset (Match,-1

public class Grade {Private double Chinese; Language achievementprivate double math; Math ScoresPrivate double 中文版; English scorePublic Grade (double Chinese, double math, double 中文版)//constructor{This.chinese= Chinese;This.math = Math;This.english = 中文版;}Public double Total () {//Calculated totalReturn Chinese + math + 中文版;}public void Printtotal () {//Output totalSystem.out.println (Total ());}Public double average () {//Calculate averagereturn Total ()/3;}public void Printaverage () {//Output

Because the study of the major is computer network technology, but in school, and did not learn how much network knowledge, so in order to be worthy of the professional, in 06, when working in the Galaxy education in hit a CCNA class, two weeks of the course, a few hours a day.The result is still not learned, because there is too much theory, too little real exercise.So I bought a book, repeatedly see, the theoretical things finally understand, the following is the final form of notes, I think a

Course ObjectivesPython from getting started to mastering College Competition Learning Series video CoursesApplicable peoplePythhon Beginner, Python developer, has the Linux Operation Foundation, can persist in the study not to give up the classmate,Course IntroductionLearn Python programming from the Zero Foundation, combine theory with practice, improve their comprehensive ability, direction and effort to determine their own value; Through this course, we can master the basic development knowl

Dance is an art, art can enhance people's aesthetic consciousness. The opening of dance elective courses in higher vocational colleges can effectively improve students ' aesthetic ability, shape good body shape, promote the development of students ' comprehensive ability, help students to know the world correctly, understand the world and form good values of life.1 Analysis of teaching dilemma of dance elective course in higher vocational colleges(1)

Yonyou has an institution called yonyou University, which is mainly responsible for two jobs: Staff Training for yonyou, aimed at on-the-job employees, and training for potential employees, it is mainly carried out through the School of consultants and is charged to students. If the employees are excellent, they can be directly recommended to the branches of yonyou for employment. At the same time, there is also an organization in UFIDA's national branches responsible for training, training coop

Linux Basics Introductory Course: HTTPS://WWW.SHIYANLOU.COM/COURSES/1A very good Linux basic course, refined, concise! Recommended!Course Content: 1th Introduction to Linux System https://www.shiyanlou.com/courses/1/labs/1/document section 2nd Basic concepts and Operation https:// www.shiyanlou.com/courses/1/labs/2/document 3rd section User and file Rights Manage

From architecture design to system implementation-a new series of. NET 3.0-based enterprise application courses (1):. NET-based system development. Zip Lecture content: this series of courses will use the Case Teaching Method to deeply analyze Microsoft's distributed application design method and implementation process based on. NET 3.0. In the first course, we will detail how to de

courses, at least we need to know a totalSeveral courses, this is the first condition. Second, the students take the choice or not, we have to scan SC full table, statistics out of all the coursesStudent number, and finally the name of the student number in the student table.The statement is as follows: (tested)Select Sname from Studentwhere Sno in(Select Sno from SCGROUP BY Sno//According to the Sno group

(It.hasnext ()){Course cr= (Course) it.next ();System.out.println ("Course: +cr.id+": "+cr.name");}}/** Access the collection elements with the For each method*/public void Testforeach (){for (Object Obj:coursetoselect){Course cr= (Course) obj;System.out.println ("Course: +cr.id+": "+cr.name");}}public static void Main (string[] args){Listtest it=new listtest ();It.testadd ();It.testget ();It.testiterator ();It.testforeach ();}Course changespublic void Testmodify (){Coursetoselect.set (4, New C