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Recently, I often hear colleagues mention correlation analysis, just see this Google Open Source Library, and the relevant operations and debugging results recorded.The novel collection can be Baidu "Jin Yong novel complete 14 department" full (TXT) Jin Yong download down.Need to tidy up a good format, between the door and martial arts names need to have a line break, pay attention to delete the last line of empty areas.After the completion of the dow
Website Operators Kee often study some new industries and observe their websites. Cut into a new industry, how to analyze the competitor's website, learn from each other useful knowledge, build their own competitive strategy. How to excavate more useful knowledge from the view of the table, ignite the beacon that carries on the website operation for oneself, this is the question that Kee has been thinking. Kee generally carry out the analysis of Web
Statistical analysis of data is divided into descriptive statistical analysis and statistical inference, the former is also known as exploratory statistical analysis, which is to explore the main distribution characteristics of data by drawing statistical graphs, compiling statistical tables and calculating statistics, and revealing the existing laws. Exploratory
11.2 Correspondence AnalysisIn many cases, we are not only concerned with the row or column variables themselves, but the relationship between the row and column variables, which is not explained by the factor analysis method. 1970 French statistician J.p.benzenci proposed correspondence analysis, also called Association analysis, R-Q type factor
Statement: This series of blogs is the "Data structure and algorithm analysis C + + description" Reading notes seriesReference Blog: Click to open linkThis article is the second chapter of the original book, the main content includes: The algorithm of time complexity analysis/algorithm optimization, the analysis of the example is very famous for the largest sub-s
Description of the processThe three main management functions of the operating system: process management, memory management, file systemTo manage the process, the kernel must have a clear description of each process, and the process descriptor provides the process information that the kernel needs to understand.Process Control block PCB task_struct: Process status, Process-open files, process priority informationTask_struct abstraction of the overall data structure:tty：控制台fs：文件系统files：文件描述符mm：内
First, demand analysis1. Log files are generated each day (the log files need to be uploaded to HDFs) 2. Analyze the fields included in the log file: Access IP, access time, access URL, access status, access traffic3. There are now "yesterday" log files that are Logclean.jar 3. Requirement indicator A. Statistics PV value b. Number of registered persons c. Statistics IP number D. Statistical bounce rate F. Statistics two hop rateSecond, data analysis1. Data acquisition u
Netty3 Source Analysis-NIO Server binding process Analysisa framework encapsulates the better, the more conducive to our rapid coding, but it covers a lot of details and principles, but the source can reveal everything. Server-side code in the specified ChannelFactory, set a good option, and then Bootstrap.bind operation will open the server, accept the connection to the end. Therefore, it is necessary to analyze the process behind this, is the key pr
Article Description: Interactive Design Task Analysis: Hierarchical task Analysis design method. To do a user-centric design, we need to better understand the user, understand the user. As an interactive designer, we need to sort out the user, the target (Goal), the Tasks (Task) before we draw the interactive manuscript.Today, we mainly discuss task analysis
In general computer application development, requirement analysis is required, which is involved in "Software Engineering" or "system analysis and design. What is the difference between IRP demand analysis? It mainly includes the following aspects:1) The business scope of the analysis is different. IRP's demand
Experimental processClone the corresponding mengning/menu.git on 1.github2. Test Menuos, test fork Direct execution results3. Configure debug system, go to gdb Debug, use file Linux-3.18.6/vmlinux and target remote:1234 to configure loading initial debugging environment4. Set breakpoints in the Linux kernel process to create the points that may be used, respectively, sys_clone,do_fork,dup_task_struct,copy_thread,copy_process and Ret_from_fork.Summarize:1. Create the process by calling Do_fork;2.
Click to praise the function analysisThe front desk passes over news id[new_id] and session[session within the user ID and user information] to the backstageIn the background news database users and news is many-to-many relationships, to see the third table of the content, interpretation of the user ID corresponding to the information there is no new_id, if there is remove[cancel like], otherwise add a point likeobj = News.objects.get (new_id=id) b = obj.favor.filter (uid=request.session[' uid '
(asyncmanager.isconcurrenthandlingstarted ()) {return; } applydefaultviewname (Processedrequest, MV); Mappedhandler.applyposthandle (processedrequest, response, MV);Get mappedhandler,mappedhandler inside already have specific controller and method // Determine handler for the current request. mappedHandler = getHandler(processedRequest); if (mappedHandler == null || mappedHandler.getHandler() == null) { noHandlerFoun
Resolution of ' dirdata ' parameter (./data) does not exist problem [Root@localhost cgi-bin]#./awstats.pl-update-config=123 Error:awstats database directory defined in config file by ' dirdata ' parameter (./data) does not exist or isn't not writable . Check config file, permissions and AWStats documentation (in ' Docs ' directory). This problem should be unable to find Awstats analysis log after writing analy
1. The naming format of the domain name is: WWW. Explanation of the parsing process:· The DNS client contracted to the DNS server to request the IP address of the www.baidu.com due to a CNAME record;· The DNS client accesses the www.a.shifen.com domain name server (the equivalent of a domain name server that accesses www.baidu.com);· Here www.a.shifen.com Domain Name server is responsible for DNS query traffic balance Scheduler, responsible for the DNS request to the ns5.a.shifen.com, ns6.a.shif
I/O problems can be said to be the bottleneck of most web systems today. What we want to know about Java I/O (hereafter referred to as (IO)) Basic structure of IO class library-Disk IO working mechanism-Working mechanism of network IOHow the-nio works-synchronous asynchronous, blocking non-blocking differences-io Optimization Tips Java Web in-depth analysis (4) Java I/O deep analysis
NULL default ' 0 ', ' Sub Ject ' char not null default ', ' Dateline ' int (m) unsigned NOT NULL default ' 0 ', ' views ' int (a) unsigned not NU LL DEFAULT ' 0 ', ' replies ' Mediumint (8) unsigned NOT NULL default ' 0 ', ' attachment ' tinyint (1) NOT null default ' 0 ', ' Closed ' mediumint (8) unsigned NOT NULL default ' 0 ', ' status ' smallint (6) unsigned NOT null default ' 0 ', PRIMARY KE Y(' Tid ')) Engine=innodb DEFAULT Charset=utf8; --Forum post content CREATE TABLE post (PID int
Add caching support to the data tier, business logic tier, UI, or output layer. Memory is now very cheap-therefore, a great performance improvement can be achieved by implementing caching in the entire application in an intelligent manner. Caching can mask many of the fault caches as a way to get "good enough" performance without a lot of time and analysis. Again, the emphasis here memory is now very cheap, so if you can get the performance you need b
more than 15, the source code in the function Gen_bitlen () to more than 15 of the situation has been specifically handled, I call the process of Huffman tree "grafting." The so-called grafting means to find the length of the code word more than 15 of the branch, the more than the part of "break" down to the depth of less than 15 of the branch up to ensure that the new branch depth of not more than 15 (a bit like the unbalanced tree to balance the process). The process of grafting follow-up sou
function is modified (that is, the address at which the function is pressed when call main), that is, the content of the return address that the ESP points to is changed;2. Also, the contents of the return address are unchanged, and the return address that the ESP points to is changed;Debugging principle 3: First to exclude easy to verify the branch;Debugging principle 4: Abnormal situation compared with normal situation;The above two debugging branches, the exclusion of the degree of difficult
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