The Association rules we discussed earlier are evaluated with support and confidence, and if a rule has a high level of self-confidence, we say it is a strong rule, but self reliability and support can sometimes not measure the actual meaning of the rule and the interest point of the business concern.
A strong rule that misled us.
Looking at an example, we analyze the relationship between buying a game disc in a shopping basket data and buying a vid
Sometimes we just took over the iptables rules that the server used to do. We may not know, need to look at the iptables rules how to write since the understanding of the machine, I will introduce to view the Iptables rule instance.
Iptables is a powerful Linux firewall that uses a very high frequency. This article describes how to view the Iptables rule settings.
1, Iptables-l
View the iptables rule for t
In the entertainment news we often heard which star was hidden rules, in the SEO world, as the optimization of the people we also want to be hidden rules. In the industry, some of it is called Baidu for degrees Niang, then we optimize the staff to live under the mercy of the Niang, of course, this is a bit exaggerated, but we can not deny some of the search engine's unspoken
The last blog post explains some of Iptable's common sense.
Here's a brief recap.
The Linux firewall consists of 2 parts, which are netfilte in kernel space and iptables of user space.
And iptable can define 4 types of rules
Filter: The core of the firewall
Nat: Address Translation
Mangle: Implementing packet modifications, such as TTL
Raw: Not used, this is not a long explanation.
Priority order: Raw-mangle-nat-filter
For the robots.txt file for the role of the site everyone knows, but through observation found that some friends of the robots.txt file rules still have a certain misunderstanding.
For example, a lot of people write this:
User-agent: *
Allow:/
Disallow:/mulu/
I do not know if you have seen, this rule is actually not working, the first sentence allow:/refers to allow spiders to crawl all content, the second sentence disallow:/mulu/refers to the pr
See: http://blog.csdn.net/scchary/article/details/40045807 #--represents a comment at the beginning of the line. [F]--forbidden (Forbidden): Command Server returns 403 Forbidden error to user browser [l]--last Rule (last rule): tells the server to stop rewriting URLs after this rule has finished executing. Stops the rewrite operation immediately and no longer applies another rewrite rule. It corresponds to the last command in Perl or the break command in the C language. This flag is used to pr
Security groups that the system automatically creates for customers
Classic Network
The default network access control rules for default security groups under Classic networks are:
Intranet into direction deny all, out direction accept all;
Public network out of direction, into the direction are authorized 0.0.0.0/0 full pass, that is, the Internet accept all.
Proprietary Network VPC
The default network access control
option page the relevant "privacy" and "security" rules set and control, users can already be related to access, privacy rules set.
The setting of security rules
Privacy setting rules
In essence, Firefox6.0 formal for users to get through the rules
Ten architectural rules of Internet application
Recently read Chen Chen's translation of the "architecture Canon-Internet Technology Architecture design Principles", the original is Martin L. Abbott and Michael T. Fisher co-authored Scalablity rules:principles for scaling Web Sites, Second Edition. Select one of the 10 architectural rules of the classification list for everyone in the Internet application f
string, and return if the object does not have the ToString () method or call the ToString () method method to return the original value , the valueof () method is invoked, then the original value returned by the valueof () method is converted to a string return, and if the valueof () method returns the original value, the browser has to throw an error of type exception.
objects are converted to numbers : The process is similar to converting an object to a string, except that the valueof () me
This article describes the common rules for yii rules. Share to everyone for your reference, specific as follows:
The Public Function rules () {return array (//) must be filled in array (' email, username, Password,agree,verifypassword,verifycode ', ' required '),//Check whether user name repeats array (' email ', ' unique ', ' message ' => ' username alrea
Set maillists related rules 1. edit the maillists configuration file # vi/etc/maillists in the spam whitelist. confIsDefinitelyNotSpam/etc/maillogs/rules/whitelist. the format of the rules rule file is as follows: # vi... set maillists related rules 1. edit the maillists configuration file # vi/etc/maillists in the spa
What is Iptables?
Iptables is a powerful application-layer firewall tool under Linux, but after understanding its rules and fundamentals, it is easy to configure.What is NetFilter?
When it comes to iptables, it is necessary to mention that Netfilter,iptables is an application layer, and its essence is a configuration tool for defining rules, while the core packet interception and forwarding is n
Windows Azure Platform Family of articles CatalogNote: If Azure is facing a customer that is only an enterprise customer, an enterprise customer accessing the Internet with a NAT device, because multiple clients use the same source IP address, can cause a single server to be under a lot of stress.This feature has been out for some time, the author here to do a little note. Readers familiar with the Azure platform know that the rules for Azure load Ba
How CSS files are linked
• Additional links: external CSS file
• Import CSS: When multiple CSS files are used, import multiple CSS into a CSS file
There are three types of CSS rule definitions:
1) classes such as ". Redtext ",". Bluetext "and". BigText "Wait.
2 tags for the original HTML tags to do the re-CSS definition
3 Advanced pseudo class, element with ID defined, and comprehensive definition
Application of CSS Rules
* Only "class" style
Original address: http://javaz.cn/site/javaz/site_study/info/2015/24843.htmlProject Address:http://www.freeteam.cn/Integration Rule ManagementManage the loyalty process rules for member operations.Integration Rule ManagementClick on the integration rules from the admin menu on the left.?Add an integration ruleClick the "Add" button below the list of integration rules.After filling in the relevant properties
There are many XHTML tags: div, ul, Li, DL, DT, DD, H1~H6, p, a, Addressa, span, strong ... When we use these tags to build the page structure, it is possible to embed them infinitely, but, nested also need to have certain rules, can not be arbitrarily nested by their own personal habits, then the HTML tag nested rules?First, HTML tags include block-level elements (blocks), inline elements (inline)1, block-
In order to facilitate the search engine crawl (in other words is false static), the following is the rules of the URL rewrite, the effect of looking at my Chinadigger link address. My current rewrite rule:
Copy Code code as follows:
[Isapi_rewrite]
# 3600 = 1 hour
Cacheclockrate 3600
Repeatlimit 32
# Protect Httpd.ini and Httpd.parse.errors files
# from accessing through HTTP
# WordPress Rewrite
One of the strong parts of Yii2 is his form component, which is both convenient and secure. Some small partners feel with Yii for a period of time, well, in addition to TP "difficult to understand" seems to have nothing.
The leader arranges to make a registration function, this fellow brushes brush is also Baidu what what what good form style, is also Baidu what what what validate verification, really for this guy Pinch Khan.
Of course, nonsense said in the front, our key Nan, is to use Active
Logo is like the face of trademark, is the first impression of a very important factor, therefore, the design of a good logo for an enterprise, is very important. If the design is excellent, the logo will be a very large intangible assets. I remember the CEO of Coca-Cola said a word, with the Coca-Cola logo, we will never go bankrupt.
Reference reading: Design theory: How to design a successful logo
In any case, it is not enough to design an impressive logo and have some knowledge of graphics
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