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unknown quantityRow simplest shape: row ladder shape, each row first is not 0 yuan is this column only is not 0 yuanGauss-Jordan as elimination method: A method of translating matrices into the simplest formHomogeneous Equation Group (homogeneous): The right end is all zero. Homogeneous equations always have solutions.The ordinary solution is 0 solution (0,0,0,..... 0), can not so ordinary call ....Nontrivial solution: A solution other than the 0 sol

2. Decomposition of matrices Matrix decomposition (decomposition, factorization) is the process of splitting a matrix into the product or addition of several matrices, which can be divided into triangular decomposition, full rank decomposition, QR decomposition, Jordan decomposition, SVD (singular value) decomposition, and spectral decomposition, in which triangular decomposition (LU decomposition) is another form of Gaussian elimination, in the line

represent the class's inheritance, followed by the class name of the parent classPHP can only follow the class name of a class after extends, which is the single-inheritance principle in PHPClass Nbaplayer extends Human{Public $name = "Jordan"; Defining propertiesPublic $height = "198cm";Public $weight = "98kg";Public $team = "Bull";Public $playernumber = "23";Private $age = "40"; Private class members can only be accessed internallyStatic properties

22 James Worthy English name: James WorthyBorn on: February 1, February 27, 1961 Height: 2.06 meters NBA career: Title: Forward Honors: ① Won the NBA championship three times② Won the NBA championship MVP in 1988James wossi was born in. He was tall and won the NBA championship three times. In, he won the NBA championship MVP. For the Lakers in 1980s, wosi started like a powerful tornado, and then hit the basket like lightning, which is the most crazy, "one of the top 5-10 outstandin

Summing up, there are several differences:(1) Naive Bayes is a generation model in which P (x|y) and P (Y) probabilities are calculated from the training data before P (y|x) is calculated, and the P (y|x) is calculated using the Bayesian formula.The Logistic regression is a discriminant model that is learned by maximizing the discriminant function P (y|x) on the training data set and does not need to know P (x|y) and P (y).(2) Naive Bayes is based on the conditional independent hypothesis, and t

; public $ gender;} class NbaPlayer extends Human {// class attribute definition public $ name =" Jordan "; // define the attribute public $ height = "198"; public $ weight = "98 kg"; public $ team = "Bull"; public $ playerNumber = "23 "; private $ age = "44"; public $ president = "David Stern"; // class method definition public function changePresident ($ newP) {$ this-> president = $ newP;} public function run () {echo "Running";} Public function ju

{//class's properties are defined public $name = "Jordan";//define Property public $height = "198cm", Public $weight = "98kg"; publ IC $team = "Bull"; Public $playerNumber = "23"; Private $age = "44"; Public $president = "David Stern"; The definition of a method of a class public function changepresident ($newP) {$this->president= $newP;} public Function Run () {echo] Running"; } Public Function jump () {echo ' Jumping"; } Public Function dribble () {

Barren Saturday-php Object-oriented (iii), Saturday-php Object-oriented Hi It's the Saturday of Kai Sen again. The two-week-long clothes that were saved were almost finished. The big afternoon to learn something ~ ~ 1, PHP Object-oriented (c) Iv. advanced practices in OOP 4.3 static-static Member Date_default_timezone_set ("PRC");/*** 1. The definition of a class begins with the Class keyword followed by the name of the class. The name of a class is typically capitalized in the first letter

. "'s eating". $ food ."";}} Class Animal {Public $ kind;Public $ gender;} Class NbaPlayer extends Human {// Define the attributes of a classPublic $ name = "Jordan"; // define attributesPublic $ height = "198 ";Public $ weight = "98 kg ";Public $ team = "Bull ";Public $ playerNumber = "23 ";Private $ age = "44 ";Public $ president = "David Stern "; // Define the method of the classPublic function changePresident ($ newP ){$ This-> president = $ new

The barren Saturday-php Object-oriented (iii) Hi It's the Saturday of Kai Sen again. The two-week-long clothes that were saved were almost finished. The big afternoon to learn something ~ ~ 1, PHP Object-oriented (c) Iv. advanced practices in OOP 4.3 static-static Member Date_default_timezone_set ("PRC");/*** 1. The definition of a class begins with the Class keyword followed by the name of the class. The name of a class is typically capitalized in the first letter of each word.* 2. Definin

101 Two-Point distanceTime Limit: 3000 MS | memory limit: 65535 KBDifficulty: 1DescriptionEnter two coordinates (x1, Y1), (X2, Y2) (0 InputEnter an integer N (0 Each group occupies one row and consists of four real numbers, representing X1, Y1, X2, and Y2 respectively. Data is separated by spaces.OutputFor each group of input data, a row is output, and the result is retained with two decimal places.Sample I

101 Two-Point distanceTime Limit: 3000 MS | memory limit: 65535 KBDifficulty: 1DescriptionEnter two coordinates (x1, Y1), (X2, Y2) (0 InputEnter an integer N (0 Each group occupies one row and consists of four real numbers, representing X1, Y1, X2, and Y2 respectively. Data is separated by spaces.OutputFor each group of input data, a row is output, and the result is retained with two decimal places.Sample I

more pronounced. The assumption is that a long method JVM may be kneeling directly. A second reason is more important:Method inlineAssuming that the JVM detects that some small methods are running frequently, it replaces the call of the method with the method body itself. Let's say the following:private int add4 (int x1, int x2, int x3, int x4) {return add2 (x1, x2) + ADD2 (x3, x4);} private int add2 (int

JVM may be kneeling directly. A second reason is more important:Method inlineIf the JVM detects a few small methods that are frequently executed, it replaces the call of the method with the method body itself. For example, the following:private int add4 (int x1, int x2, int x3, int x4) {return add2 (x1, x2) + ADD2 (x3, x4);} private int add2 (int x1, int x2) {re

Semantic understanding based on RNN 1. Preface The article translated in this article is Grégoire Mesnil, Xiaodong He, Li Deng and Yoshua bengio-investigation of recurrent neural Network architectures and Lear Ning Methods for spoken Language understanding The Code home page is HTTPS://GITHUB.COM/MESNILGR/IS13. This article describes some of the RNN frameworks including Elman-type Rnn,jordan-type RNN and some variants. To deal with

are more obvious. If it is a long method, the JVM may just kneel down. The second reason is more important: Method inline If the JVM detects that some small methods are frequently executed, it replaces the method call with the method body. For example, the following: private int add4(int x1, int x2, int x3, int x4) {return add2(x1, x2) + add2(x3, x4);}private int add2(int

objects*/Defining classesClass nbaplayer{Public $name = "Jordan";Public $height = "198cm";Public $team = "Bull";Public Function __construct () {}Public Function run () {echo "running\n";}}Instantiation of$jordan =new Nbaplayer ();Invoking the properties and methods of an objectecho $jordan->name. " \ n ";$jordan->run

8. Method of Matrix Functions 1. evaluate matrix functions using the standard form of Jordan. For the polynomial of the matrix, we have derived: Polynomial In fact, the above results not only apply to the polynomial of the matrix, but also to the idempotence of the matrix. This leads to another definition and calculation method of matrix functions. 1. Definition: Set the Jordan Standard of n-level matrix

With the popularization of 3G, more and more people use mobile phones to surf the internet.The screen of the handset is smaller, the width is usually below 600 pixel, the PC screen width is generally above 1000 pixel (the current mainstream width is 1366x768), some also reach 2000 pixel. The same content, in different sizes of the screen, are showing satisfactory results, is not an easy thing.As a result, web designers have to face a dilemma: how to render the same page on different sizes of dev

----class Fill the framework of a class with concrete data /** Code for Learning Records in the face of objects*/Defining classesClass nbaplayer{Public $name = "Jordan";Public $height = "198cm";Public $team = "Bull";Public Function __construct () {}Public Function run () {echo "running\n";}}Instantiation of$jordan =new Nbaplayer ();Invoking the properties and methods of an objectecho $