rfm analysis

Symfony2 is developed based on instance analysis of Controller usage and symfony2 instance analysis. Symfony2 is used as an example to analyze the usage of the controller developed by symfony2. this document analyzes the usage of the controller developed by Symfony2. For your reference, we will share the following details: Analysis of Controller usage examples de

1. What is lda? Linear Discriminant Analysis (LDA. Fisher Linear Discriminant (linear) is a classic algorithm for pattern recognition. In 1996, belhumeur introduced Pattern Recognition and AI. The basic idea is to project a high-dimensional Pattern sample to the optimal identification vector space to extract classification information and compress feature space dimensions, after projection, the pattern sample has the largest Inter-class distance and t

Part of the data from Shen shouzhong, Zhang yuqing "crawler-based XSS vulnerability detection tool design and implementation": http://download.csdn.net/detail/xihuanqiqi/4655513 I. Graphic analysis of XSS-scan system principles the system modules they wrote are relatively clear and easy to understand. My explanation is as follows: 1. first, use the crawler module to capture the page url (that is, put the URL in a queue called the crawler URL Queue) 2

Simple Object Memory analysis and Simple Object Memory Analysis In today's learning process, we are more about how to use various methods or routines, such as when designing an app, we may say that the models we have previously designed are used directly, or we need to find similar demos on the Internet. With the accumulation of time and experience, we are more and more comfortable in this aspect, I have a

In-depth analysis of Linux heap memory management (I) and in-depth analysis of Memory Management LinuxIn-depth heap memory management analysis(Upper Half) Author: Location @ Alibaba Cloud universal security 0 Preface In recent years, vulnerability mining has become increasingly popular, and various analysis articles on

STL source code analysis --- stl_multiset.h Reading Notes, stl source code analysis notes The set in STL does not allow repeated key values. Therefore, multiset is available. The multiset and set operations are the same and have the same functions, but the multiset allows duplicate key values. In the insert operation using the red/black tree, insert_equal is used, and set uses insert_unique, other codes are

Based on data analysis, whether automatic vehicles consume more oil than manual vehicles, and automatic data analysisOverview This is a multivariate regression equation used to reveal the relationship between vehicle fuel consumption and vehicle properties, and attempts to answer the common question: is the automatic vehicle more expensive? In addition to the automatic file attribute, is there a greater relationship between other attributes and fuel c

Linux Server death case analysis, linux Case Analysis Symptom: When running a specified script on a linux server, there will be countless identical processes, which will not be killed, and the system will be in an endless loop, login fails. You can only manually press the power key of the machine. Is this enough to crash? Problem analysis process: During the

AWR report generation and simple analysis methods, awr Report Analysis MethodsHow to generate an AWR report: Step 1: When the database pressure test card starts: generate the first snapshot: SQL> exec dbms_workload_repository.create_snapshot (); Step 2: When the database stress test ends: generate the second Snapshot SQL> exec dbms_workload_repository.create_snapshot (); Step 3: generate an AWR report SQL>

Analysis of Javascript anonymous and self-executed functions, analysis of javascript Functions are the most flexible objects in JavaScript. Here we will only explain the usage of anonymous functions. Anonymous function: A function without a function name. Function definition can be roughly divided into three methods: First: this is also the most common one. function double(x){ return 2 * x; } Second: This m

Algorithm sorting (4): Analysis on the optimization of quick sorting and Analysis on Sorting The previous article introduced the fast sorting of unilateral and bilateral scans. However, we will give a brief analysis today.I. disadvantages of unilateral Scanning The biggest drawback of a single-side scan is that it needs to be exchanged every time. If an array is

[OpenGL] Shader instance analysis (7)-Snowflake falling effect, shader instance analysis Keep forwarding address: http://blog.csdn.net/stalendp/article/details/40624603 After studying the effect of falling snow, I feel very good. I will share it with you. The effect is as follows: The Code is as follows: Shader "shadertoy/Flakes" {// https://www.shadertoy.com/view/4d2xzcpropertiesjavasimouse ("Mouse Pos",

Android4.4 Component Analysis-service component-bindService source code analysis, android4 major components6.1.1. bindService Because the code implementation process of startService is analyzed earlier, the Code Analysis of bindService is not described in detail. When introducing the process, you should pay more attention to some details. First, bindService also

[Java Collection source code analysis] TreeMap source code analysis Reprinted please indicate the source: http://blog.csdn.net/ns_code/article/details/36421085 Preface This article does not intend to extend the style of the previous articles (add comments to all source code), because we need to understand all the source code of TreeMap. For bloggers, it really takes a lot of time and experience. At present,

Brother blockchain getting started tutorial ETH source code analysis p2p-udp.go source code analysis () The Network Discovery Protocol of P2P uses the kademlia protocol to process node discovery of the network. Node search and node update. Kademlia protocol uses UDP protocol for network communication. Read this part of the code. We recommend that you first look at the introduction of the kademlia protocol i

Here are some notes about stress analysis in the field of finite element analysis: Stress is simply a measurement of the internal forces in a body, as a result of the externally applied loads. Force is a vector-it has both magnction and direction. As a result, stress actually has direction as well. So what happens when you have complex (multi-directional) loading? Your stress inside your part will have co

DICOM: Comparison and Analysis of three open-source DICOM databases: "data loading" and dicom comparison and analysisBackground: In the previous blog, DICOM: Sante DICOM Editor of DICOM universal editing tool introduces DICOM universal editing tool,"As long as the Sante DICOM Editor cannot open the data, the DICOM file format can basically be determined to be incorrect (the accuracy rate is 99.9999% ^_^ )". While sighing the powerful Sante DICOM Edito

Fault Analysis of audio and video development, and audio and video Fault Analysis In the process of audio and video development or the use of development tools, especially when a software is unfamiliar, it is usually impossible to start with problems, here, the AnyChat platform, a relatively advanced audio and video development platform in China, is used as an example to provide common fault

Enable slow log There are two activation methods: 1. In my. cnf, log-slow-queries [= file_name]2. When the mysqld process is started, specify the five common tools to be compared using the -- log-slow-queries [= file_name] Option. Mysqldumpslow, mysqlsla, myprofi, mysql-explain-slow-log, mysqllogfilterMysqldumpslow is a log analysis tool for slow query officially provided by mysql. the output chart is as follows: the main function is to Count the num

Analysis of a Trojan trojan virus (2) Analysis of the Trojan trojan virusI. Basic Information Sample name: hra33.dll or lpk. dll Sample size: 66560 bytes File Type: Win32 dll file Virus name: Dropped: Generic. ServStart. A3D47B3E Sample MD5: 5B845C6FDB4903ED457B1447F4549CF0 Sample SHA1: 42e93156dbeb527f6cc213372449dc44bf477a03 This sample file is the virus file C: \ WINDOWS \ system32 \ hra33.dll that was