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A series of interesting writing algorithms--Hungarian algorithm

match as many couples as possible, the Hungarian algorithm working mode will teach you to do this:===============================================================================First : try to find the girl number 1th boys, found the first and he connected to the number 1th girls are still flowers, got it, connected to a blue line===============================================================================two : then to the 2nd boys to find a sister, found the first and he connected to the 2nd

Call Python's sklearn to implement the logistic reression algorithm

ourselves. This requires an official given parameter description, as follows:Sklearn.linear_model. Logisticregression class Sklearn.linear_model. logisticregression ( penalty= ' L2 ', dual=false, tol=0.0001, c=1.0, fit_intercept=trueintercept_scaling=1, class_weight=none, random_state=none) Logistic Regression (aka Logit, MaxEnt) classifier. In the Multiclass case, the training alg

Some basic knowledge of Java JVM and GC (RPM)

first, what is the JVM Java VM (English: Java Virtual machine, abbreviated as JVM), aka Java Virtual machine, a VM capable of running Java bytecode, doing it on a stack-structured machine.The first implementation, developed by the solar micro-system, is part of the Java platform and is capable of running software programs written in the Java language. Java Virtual machine has its own perfect hardware architecture, such as processor, st

[Selenium+java] Testng:execute multiple Test Suites

Original URL: https://www.guru99.com/testng-execute-multiple-test-suites.htmlTestng:execute multiple Test SuitesTestNG enables you to run test methods, test classes and test cases in parallel inside your project. By performing parallel execution, we can reduce the ' execution time ' as tests is started and executed simultaneously in D Ifferent threads.Here we'll see how to run Multiple classes (aka different suites) using TestNG.Creating a testng.xml

Python: Penetration Testing Open Source project

Mallory, extensible tcp/udp Man-in-the-middle Proxy, supports modifying non-standard protocols on the fly Pytbull:flexible ids/ips Testing Framework (shipped with more than) Commissioning and reverse engineering Paimei:reverse Engineering Framework, includes PYDBG, PIDA, pgraph Immunity debugger:scriptable GUI and command line Debugger Mona.py:PyCommand for Immunity Debugger This replaces and improves on PVEFINDADDR Idapython:ida

Java memory overflow and stack Overflow

First, background knowledge1. JVM Architecture2. JVM Runtime Data area3. JVM Memory modelJVM Runtime memory = Shared memory area + Thread memory Area3-1. Shared Memory AreaShared memory Area = Persistent Band + heapPersistence Band = Method Area + OtherHeap = old space + young spaceYoung Space = Eden + S0 + S13-1-1, durable generationThe JVM implements the method area with the persistence band (Permanent Space), which mainly holds all loaded class information, method information, constant pool,

5. Linux Application Address layout

5. Linux Application Address layoutProgram Composition:When you learn Linux application development, you often experience the following concepts: Code snippets, data segments, BSS segments (Block Started by Symbol, AKA: Uninitialized data segments), heap (heap), and stack (stack). These parts are also an important part of the Linux application.Memory layout:When a Linux application runs in memory, the above components are laid out in memory:

Linux under five top-level Open Source command shell

decided to try another four shell tools: Ksh, TCSH, zsh, and fish. These four shells can be easily installed through the default libraries of the Fedora system I use, and they may already be built into the system distribution you are using.Here's a little introduction to each of them, and explain why it's a good fit for your next Linux command-line interpreter.BashFirst, let's review the most familiar one. GNU Bash, aka Bourne Again Shell, is the def

Usr/include/c++/6.4.1/bits/stl_relops.:67:parse error at "Std"

welcome.c:1:/usr/include/glib-2.0/glib/gmain.h:581:Ten: note:expected'Gsourcefunc {aka int (*) (void *)}'But argument is of type'Void (*) (void)'guint g_timeout_add_seconds (guint interval,^~~~~~~~~~~~~~~~~~~~~usr/include/c++/6.4.1/bits/stl_relops.: the: Parse error at"STD"Makefile:333: recipe forTarget'Moc_productlicense.cpp'failed Make[3]: * * * [moc_productlicense.CPP] Error1 Make[3]: * * * waiting forunfinished jobs .... Make[3]: Leaving director

C + + Programming specification

C + + Programming specification This is a great contribution from two of the world's top experts, suitable for all levels of C + + programmers in the C + + World 20 synthesis, here are 101 about C + + programming rules, general principles and best practices. The relationship between programming norms and human beingsA good programming specification can bring many of the following benefits that are interrelated:Improve code QualityDevelopers are encouraged to act consistently and di

Java implementation Nlpir (Ictclas) participle

1, Nlpir IntroductionNLPIR Chinese Word segmentation system (aka ICTCLAS2013), the main functions include Chinese word segmentation, POS tagging, named entity recognition, user dictionary function, support GBK encoding, UTF8 encoding, BIG5 encoding. Added micro-bo participle, new word discovery and keyword extraction; Dr. Zhang Huaping has made more than 10 years, the kernel upgrade 10 times. : Http://ictclas.nlpir.org/downloads2. Introduction of Cata

Linux kernel compilation and parameter configuration

setting, the system provides a number of network card drivers, the user can only choose their own network card driver. In addition, users can add support for FDDI, PPP, slip, and Wireless LAN (Wireless LAN) to the kernel as needed. 11. Character devices (character device) (1), virtual terminal (CONFIG_VT) [y/n/?] Select "Y" and the kernel will support the virtual terminal.(2), support-Console on virtual terminal (config_vt_console) [y/n/?]Select "Y" and the kernel can use a virtual terminal as

"Linux Environment Programming" ARP programming

parameters of the socketAccording to figure one, we can see that Arp,rarp and IP, while belonging to the network layer (aka IP layer), but their data packaging is independent. Although ICMP and IGMP are also in the IP layer, they require the wrapper of the IP datagram. So when we set up a socket for ARP and RARP, we can't take advantage of the original datagram (SOCK_RAW) of the IP, we need the most primitive Ethernet frames (Sock_packet), and on the

Maximum and sub-arrays/MAX and sub-sequences

The maximum and sub-arrays are the array and the largest subarray, aka the largest and the subsequence. A subarray is a contiguous n-element in an array, such as A2,A3,A4, which is a 3-length sub-array. As the name implies, the maximum and sub-arrays are required and the largest sub-array.  An array of n elements contains n sub-arrays of length 1: {A0},{A1}, ... {an-1};An array of n elements contains n-1 with a length of 2: {a0,a1},{a1,a2},{an-2,an-1}

Start using the JavaScript native API

Remove (EL) { var toremove = Document.queryselector (EL); ToRemove.parentNode.removeChild (Toremove); } Parent element //JQuery $ ('. El '). Parent (); //Native document.queryselector ('. El '). parentnode; prev/next Element //JQuery $ ('. El '). Prev (); $ ('. El '). Next (); //Native document.queryselector ('. El '). previouselementsibling; document.queryselector ('. El '). nextelementsibling; XHR

An introduction to regular expressions in Perl

Regular expressions are a major feature of the Perl language and a bit of a pain in the Perl program, but if you have a good grasp of him, you can easily use regular expressions to complete the task of string processing, of course, in the CGI programming will be more handy Thanks to aka and the author. Regular Expressions in Perlthree forms of regular expressions Common patterns in regular expressions The 8 major principles of regular expressions

How to increase your computer's virtual memory

Virtual memory, aka virtual Memory (Memory). Programs running on a computer need to be executed through memory, and if the program that is executing consumes a large amount of memory or a lot of it, it can lead to memory exhaustion. To solve this problem, Windows uses virtual memory technology, which is to absorb a portion of the hard disk space to act as memory. Note: Virtual memory is not recommended when memory is sufficient, because virtual memor

SPRINGMVC Receive Parameters

Building the SSM framework: http://www.cnblogs.com/liyafei/p/7955413.html1: receive normal request parameters from formStructure CatalogRole.html1.1 role.html Form  DOCTYPE HTML>HTML>Head>MetaCharSet= "UTF-8">title>Insert Title heretitle>Head>Body>Parent Directory: /This level directory./root directory/aka http://localhost:8080/ -The role.html access path is http://localhost:8080/html/role.html,html/** mapped to web-inf/html/. The Web. XML has configu

Retro concept design of famous websites

The American Blog, aka Magazine, included a group of design works by painting artist Zazzle, whose theme was to recreate and package a series of well-known Internet social web sites in retro fashion, and cut into the colors, materials, and quotes quoted by the authors. The designers chose Facebook, Youtube, Tumblr, Twitter, Myspace, Ffffound, Wikipedia, Flickr, Linkedin, Last.fm total of 10 sites, I am in the process of finishing, each poster on the

The tag library in 10 JSP that Java programmers want to master

One of the most overlooked features of JSP is its ability to apply reusable code blocks--aka "tag libraries"-adding new functionality to a JSP application. These tag libraries, declared using XML type tags, provide ready-made tools that can be easily consolidated into JSP pages. They are also a useful way to separate the business logic and visual appearance of an application. There are many free online libraries-but how do you know where to start? T

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