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Pascal subset lexical analyzer

", "then", "while", "do", "end "};Char source [MAX_SRC_LEN];Word_type word_stack [MAX_WD_CNT];Int line = 1, wtop = 0, ip = 0; /*************************************** *********/Void p_word_stack (){Int I; word_type w;Printf ("syn/t | value/n ");Printf ("________ | ________/n ");For (I = 0; I W = word_stack [I];If (w. syn> = 1

Ai Big jobs...

51147.2222187 26099.7222 51161.1111188 26108.0556 51244.7222189 26116.6667 51216.6667190 26123.6111 51169.1667191 26123.6111 51222.7778192 26133.3333 51216.6667193 26133.3333 51300.0000194 26150.2778 51108.0556 2. Machine Learning for poisonous mushrooms and Edible FungiThe data of 8124 different kinds of mushrooms are collected and the specific classification of each mushroom is given. Please give a classification rule, make a prediction category for the following pseudo-books, and give the

The relationship between logistic regression and other models _ machine learning

the category by comparing the probability value, and the Logit function in the preceding section satisfies the requirement, which makes the output value of the decision function Wtx+b wtx+ b is equal to the probability value ratio to take logarithm logp (y=1|x) 1−p (y=1|x) Logp (y=1|x) 1−p (y=1|x), the solution of this equation is obtained by the input vector x x causes two kinds of probability to be: P (y=1|x) =ew⋅x+b1+ew⋅x+b (1) p (y=1|x) =ew⋅x+b1+ew⋅x+b (1) P (y=0|x) =11+ew⋅x+b (2) p (y=0|x

In-depth WIN2000 group table (5)

T c p/I p and I n t e r n e tIntroductionThe implementation of t c p/P in Windows 2000 provides an important point-to-point connection mode for the connection between Microsoft wi n d o w s network and u n I x. To thoroughly understand the network parameters included in the Windows 2000 Registry (and the correct values of these parameters), it is necessary to fully understand the basic network structure. In-depth discussion of network background knowl

Use command line IPSec to block a port

In win2003, The netsh IPSec command is used directly, ipseccmd is used for XP systems, and ipsecpol is used for 2000. Common parameters are as follows:-W Reg indicates that the configuration is written to the Registry and remains valid after restart.-P specifies the policy name. If the policy name exists, add the rule to this policy. Otherwise, create one.-R: Specifies the rule name.-N indicates the operation, which can be block, pass, or inpass. It m

[Fix bug] Error returned when retrieving custom textColor of theme

I can use inflate in Fragment, but once ListView is used for inflate, an error is reported, indicating that my custom attr cannot be found! After studying for half a day, I found that my inflate context has a problem: view =); Have you found any problems? In the end, we found that AppContext is not allowed, but Activity-level! Does anyone know why? view =); In this way, you can. Finally, attach my LOG: 07-13 18:03:50. 120: W/System. err (15302): and

bzoj4399 Magic Girl LJJ

#include #include#includeinlineint_int () {intx=0, c=GetChar (); while(c> $|| c -) c=GetChar (); while(c> -c -) x=x*Ten+c- -, c=GetChar (); returnx;}Const intn=400010;intch[n][2],sz[n],rnd[n],val[n],col[n],ptr=0, stk[n],rt[n],stp=0;intVc[n];DoubleLgv[n],lgs[n];voidUpintW) {Sz[w]=1+sz[ch[w][0]]+sz[ch[w][1]]; LGS[W]=lg

Exploring the principle and programming implementation of the SHA-1 algorithm in Redis source code

(t) = W (t) (0 The above mathematical expression is adapted from the RFC document, H0 ~ after 80 rounds of Operation ~ H4 is the 160-bit message digest to be generated by the SHA-1 algorithm.. The five ABCDE symbols are used in the Redis source code. v represents A. w, x, and y represent B, C, and D in the above section, and z represents TEMP in the above section. In the first two steps in step 5, the conv

Developing web programs in the Go language [translate]

: $ go build wiki.go$ ./wikiThis is a sample page. (If you are using a Windows system, you do not need the "./" in front of "wiki".) ) Click here to view the full code. Learn about the Net/http package (episode) Here is the complete code for a brief Web server: package mainimport ( "fmt" "net/http")func handler(w http.ResponseWriter, r *http.Request) { fmt.Fprintf(w, "Hi there, I love %s!", r

Notes on application of regular expressions in php

times in the target object. "? "Requires that its leading object must appear zero or once consecutively in the target object. "^" indicates the start position of the string or the start position of each row in multiline matching mode. "$" indicates the end position of each row in the string's delimiter or multiline matching mode.Use several typical regular expressions as an example to describe their meanings(1)/Eo + /. the expression contains the "+"

bzoj1984 month under "Mao Jingxiu"

DescriptionCaterpillar after a timely deformation, and finally escaped the robbery, left the vegetable garden. Caterpillar through the mountains and rivers, through hardships, and finally came to a small Shaoxing campus. Climb, crawl, climb, crawl ~ ~ Caterpillar climbed to a small "Mao Jingxiu" below, found that the tree has his favorite Mao Maogo ~ ~ ~ "Mao Jingxiu" on there are N nodes and N-1 branches, but there is no Mao Maogo on the node, Mao Maogo are long on the branches. But this "Mao J

JS Regular Expression Verification Encyclopedia (collection) _ Regular expressions

-mm-dd HH:MM:SS" | | "Yyyy/mm/dd HH:MM:SS" function isdatetime (str) { var result=str.match (/^ (\d{4}) (-|\/) (\d{1,2}) \2 (\ d{1,2}) (\d{1,2}):(\d{1,2}):(\d{1,2}) $/); if (result==null) return false; var d= new Date (result[1], result[3]-1, result[4], result[5], result[6], result[7]); Return (D.getfullyear () ==result[1] (D.getmonth () +1) ==result[3]d.getdate () ==result[4] d.gethours () ==result[5]d.getminutes () ==result[6]d.getseconds () ==result[7]); Check for Yyyy-mm-dd | | D

From Perceptron to SVM

This article is mainly the analysis of Perceptron and SVM processing classification problem principle, does not involve the solutionPerceptron:What the Perceptron is trying to solve is a two classification problem: given a linearly separable dataset, we need to find a super plane that separates the dataset. This hyper-planar description is as follows:$w *x+b=0$The decision function of the perceptron is:$f (x) =sign (

Beautiful form to beautify the JS code (1/2)

(obj);}Nf.add_select = function (obj) {this._select[this._select.length] = obj; selects (obj);}Nf.add_multiselect = function (obj) {this._multiselect[this._multiselect.length] = obj; multiselects (obj);}Nf.start = function () {Separate and assign elementsvar allinputs = this.getelementsbytagname (' input ');for (var w = 0; w Switch (allinputs[w].type) {Case "tex

bzoj4592 [Shoi2015] brain hole therapy instrument

the range L to R. n,m Outputfor each query, the output line is an integer that indicates how large the maximum contiguous brain cavity area is in the query interval. Segment Tree Maintenance interval information: 0 consecutive numbers of intervals from the leftInterval from the right start continuous 0 number interval continuous 0 of the maximum length interval 0 of the number of interval length interval 0/1 covered by the tag support operation: Interval coverage 0/1 query interval 1 Number of

Bzoj2589:spoj 10707 Count on a tree II

[n*2][2],e0[n],ep=2, la=0;intid[n],rt[n],idp=0, fa[n],dep[n],t[n],ans=0;intSz[n],pf[n],top[n];intans[ About][n],h[n];intmem[261*n],*ptr=Mem;structarray{int*arr[161]; Const intoperator[](intx) { returnArr[x>>8][x255]; } voidCopy (ARRAYAMP;SRC,intXinty) {memcpy (arr,src.arr,161*4); PTR+=261; memcpy (Ptr,arr[x>>8], the*4); Ptr[x255]=y; Arr[x>>8]=ptr; }} as[N];intLcaintXinty) { inta=top[x],b=Top[y]; while(a!=b) { if(dep[a]Dep[b]) Std::swap (A, B), Std::swap (x, y); X=fa[a];a=Top

Regular expressions of common use

string of numbers and 26 English letters"^\w+$"//A string of numbers, 26 English letters, or underscores"^[\w-]+ (\.[ \w-]+) *@[\w-]+ (\.[ \w-]+) +$ "//email address"^[a-za-z]+://(\w+ (-\w

Vijos1507 [NOI2004] Depressed Teller

Title Link: https://vijos.org/p/1507Orz Huang Seniors ... But think that the Huang long code will be the same value of the elements open to multiple points is a bit unscientific, so you change the value of the same element in a node to record the number of times.Handed three times yellow seniors code average 2306ms, their own 1209ms.1#include 2#include 3#include 4#include 5#include 6 #defineRep (i,l,r) for (int i=l; i7 #defineCLR (x, y) memset (x,y,sizeof (×))8 using namespacestd;9typedefLong Lo

The solution of Perceptron, logistic regression and SVM

This article will introduce the Perceptron, the solution of logistic regression and the partial solution of SVM, including some proofs. Some of the basic knowledge in this article has been pointed out in the gradient descent, Newton method and Lagrange duality, and the problems to be solved are from "perceptron to SVM", "from linear regression to logistic regression" two articles.Perceptron:As already mentioned in the previous article, the target function of the Perceptron is as follows:$min \ L

Shell Regular Expression Detail _ regular expression

Shell-Used regular expressions "^\d+$"//non-negative Integer (positive integer + 0)"^[0-9]*[1-9][0-9]*$"//Positive integer"^ ((-\d+) | (0+)) $ "//non-positive integer (negative integer + 0)"^-[0-9]*[1-9][0-9]*$"//Negative integer"^-?\d+$"//Integer"^\d+ (\.\d+)? $"//nonnegative floating-point number (positive float + 0)"^ ([0-9]+\. [0-9]*[1-9][0-9]*) | ([0-9]*[1-9][0-9]*\. [0-9]+) | ([0-9]*[1-9][0-9]*)] $ "//Positive floating-point number"^ ((-\d+ (\.\d+)?) | (0+ (\.0+)) $ "//non-positive floati

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