learning tree itil foundation

powerful library of functions, to learn it, you must spend a lot of time to remember, good memory can make learning to achieve a multiplier effect. 2. Mathematics and Logical Thinking This is certainly not an absolute effect, because look at the complexity of the development project. Small projects do not require much mathematical and logical thinking, but it is important to develop projects that are similar to finance or a large number of operat

fulfilling.) ）After that, I used this "use to learn" method to learn new domain technology. Including the recent learning of blockchain technology is also the case, I first on the whole blockchain has a general understanding of the inside some of the proper terminology, and the use of technology. Then there is a basic understanding of blockchain development. After setting up this framework, I have to conquer the core principles. Finally, prepare to d

Log System Common logs are typically stored in/var/log: You can roughly divide the logs into two categories based on the service object: System log, Application log. System log is mainly for the system built-in program or system kernel such as log information such as Alternatives.log, btmp and so on, the application log is the third-party application of our installed log such as TOMCAT7, apache2 and so on. references Getting Started with Linux Basics (new version)

HTML code for the element with the ID value. html()This is the method in jquery. equivalent to document.getElementById("i1").innerHTML; :Although jQuery对象 it is DOM对象 produced after packaging, but jQuery对象 can not be used in DOM对象 any way, the DOM对象 same way can not be used in jQuery the method.A convention, when declaring a jquery object variable, precede the variable name with $:var $variable = jquery pair like var variable = dom object $variable[0] // jquery objects Turn into DOM objectsT

fast search and Insert, as well as rank,Select,Delete, and range lookups. But in reality,worst-case is not impossible to happen, such as the client inserting key in full order or in reverse . The performance of the algorithm degrades to N and becomes a linear lookup, so this possibility is why we are looking for better algorithms and data structures. Binary search Tree application is not many, because it is the worst time with the linear table, most

From: http://www.cnblogs.com/joneswood/archive/2012/03/04/2379615.html 1. What is treelink? Treelink is the internal name of Alibaba Group. Its Academic name is gbdt (gradient boosting demo-tree, gradient escalation Decision Tree ). Gbdt is one of the two basic forms of algorithms related to "model combination + Decision Tree", and the other is random forest (ran

64 documents, the word "the" appears 1000 times in 63 documents, and Messi appears 5 times in 3 documents. The bottom is 2.The:log (64/1+63) = 0Messi:log (64/1+3) = 4Then TF * IDFthe:1000 * 0 = 0Messi:4 * 5 = 20We need a function:Defines a distance that is used to measure similarity.1. We can calculate the similarity of this article and other articles, and return an optimal result.2. We can calculate the similarity between this article and other articles, and return the K most relevant results

production two times high 1, is through the c[0110] indirect influence, but, c[ 0100] But can jump one level to produce a high 1.Perhaps the above said you are more around, then you only need to pay attention to: C of the constituent nature (in fact, the group nature) determines c[0011] only directly affect the c[0100], and c[0100] only directly affect [1000], and the relationship between the following table is also must be K +=lowbit (k). At this point we are writing the code with the new main