gamification theory

the cache mechanism on the domain name server, the answer is of course yes. Because for the name server, the above two interesting conclusions are still valid. Therefore, the domain name server can be those access to the domain name resource record cache, the user initiates the request, you can directly return the cached results, not to iterate or recursive parsing.For more information about the DNS theory section, you can also refer to these two tex

Python Machine Learning Theory and Practice (4) Logistic regression and python Learning Theory From this section, I started to go to "regular" machine learning. The reason is "regular" because it starts to establish a value function (cost function) and then optimizes the value function to obtain the weight, then test and verify. This entire process is an essential part of machine learning. The topic to lear

Relational Database Standardization Theory functional dependency and paradigm theory the relational model can be formally represented as R (U, D, dom, F); U: Attribute Set, D: indicates the attribute domain, dom: ing set of attributes like domains. F: indicates the dependency set of data between attributes. 1. function dependencies are defined as follows: assume that the relational mode R (U), X, and Y are

=" Wkiol1gcwzugad0maagdtqdfbiy847.png "/>Consistency (consistency): that is, data consistency, simply said, is the data copied to the N machine, if there is an update, n machine data is updated together.Availability (availability):each request can receive a response, regardless of the success or failure of the responsePartition tolerance (partition fault tolerance): in the large-scale distributed data system, the network partition phenomenon, that is, the partition between the machine can not ne

Uva101__connect the Campus (minimal spanning tree) (graph theory), graph theory, and Its Application Solution report Question Portal Question: To minimize the cost of school network intercommunication, some buildings already have lines. Ideas: Of course, all existing lines use the least cost. If the existing line is regarded as the cost of 0, the Minimum Spanning Tree is obtained. #include Connect the C

[Plan Theory] Plan Study Notes, Plan Theory Study Notes Why should I learn the plan now?Because the plane plan was determined by Shun-cutting HNOI2010... ------------- The line cut is me> w First, there are some definitions: What is a floor plan?For a graph G = PlanSurface:For a plan, if some edges are enclosed and the area does not contain the vertices and edges of the plan, this area is called a plane of

Topic Links:I won ' t tell you that this is about number theoryproblem DescriptionTo think of a beautiful problem description was so hard for me the Let ' s just drop them off. :)Given four integers A,m,n,k,and s = gcd (a^m-1,a^n-1)%k,calculate the S.InputThe first line contain a t,then t cases followed.Each case contain four integers a,m,n,k (1OutputOne line with a integer S.Sample Input11 1 1 1Sample Output0Test Instructions: The value of GCD (a^m-1,a^n-1)%k is obtained;Ideas: There is theorem

Graph Theory 3 bipartite graph matching, graph theory Bipartite Graph Matching You can learn http://www.renfei.org/blog/bipartite-matching.html here firstTemplate According to the above blog, the bipartite graph matching can be divided into four types Maximum number of matches: Maximum number of matched Edges Minimum vertex coverage: Select the least vertex so that at least one endpoint of any edge is selec

Summer Training (4) Fifth Bullet --- number theory (hdu1222) and number theory hdu1222 Summary of the question: after that day, you can say that it is almost A three-inch building.At last, there was no dead face, but a dead fish eye. There are signs of point recovery. But this guy from MenciusThe words are still a bit reasonable, and the sky will fall... in short, due to the incompleteCheng, but Mr. A has

Number Theory preliminary-Euclidean algorithm, number theory-Euclidean Algorithm 1 int judge (int * X) {2 X [2]/= gcd (X [2], X [1]); 3 for (int I = 3; I This algorithm is called Euclidean algorithm. Does not overflow, because The number of recursive layers of The gcd function cannot exceed 4.785lg.N+ 1.6723, of whichN= Max {A,B}. Gcd (FN,FN-1 ). Gcd can also be used to obtain the least common multiple

have disks, and in many systems, one disk saves files for many users at the same time. Allocating disk space and documenting who is using which disk block is a typical task for operating system resource management. The combination of these two approaches is a multi-channel technique.The biggest problem with spatial multiplexing is that memory must be split between programs, which needs to be implemented at the hardware level and controlled by the operating system. If the memory is not split, on

[SignalR Learning Series] 1. SignalR theory introduction, signalr TheoryWhat is SignalR? ASP. NET SignalR is a development library that allows ASP. NET developers to easily add instant messaging functions to their programs. The instant messaging function can send data directly from the server to the online client without waiting for the client to request data to return data. SignalR provides a simple api to create remote engineering call protocol (RPC

. This is why humans love flowers. This is also the root cause of making flowers a messenger of love. In fact, not only is the beauty of flowers because of the sexual needs of humans (specifically, it should be the needs of reproduction), including the evaluation of beauty. Women with big breasts and big buttocks are considered to be better able to give birth and nurture future generations. So it was later called beauty. That is, the intention of a beauty is to be good at raising future generati

Ancient naive theory People in the ancient age were over years old. Why?Because they adapt to the laws of natural changes in the world, understand the number of skills, have a certain degree of diet restraint, work and rest have a certain degree of Convention, do not over labor. People who understand the principles of health care in the old age often teach people what?In such a case, we should avoid the attacks against the attackers and thieves in a

Today's recommended is an old post, the Nanjing University of Mr. Sir's "Hu Yu" and later two additional posts. Count is more than 10 years ago post, I know the post from the Nanjing University BBS, Baidu a bit, but did not turn to the original. But Baidu to a lot of irresponsible reprint, I think I this is not a copy of it. That year, I have a very respectable seniors to recommend this article, let me benefit (seniors young and arrogant because this matter also ate a lot of losses, he himself h

Translated from jelline BlogHttp://blog.chinaunix.net/uid-9112803-id-411340.html//==============================In the process of doing research, we found that the mathematical model or the graph theory model, which used to feel useless, suddenly became very useful. Sigh at their own knowledge of the deficiencies, so search for relevant knowledge to learn, and share.This reprinted article has certain help for the junior personnel who are engaged in th

Flash basic Theory Lesson first chapter basic animation concept Flash basic Theory Class chapter II ActionScript 3.0 Animation Foundation Ⅰ Flash basic Theory Class chapter II ActionScript 3.0 Animation Foundation Ⅱ Flash basic Theory Class chapter III Application of Trigonometry Ⅰ Flash basic

I do not know if you have read CA's "Long Tail theory" this book. A book that was very hot a few years ago. In Chen Nian began to involve Web site optimization and data analysis, and accumulated a certain website operation and data statistics, again take out the "long tail theory" read through it, found that many problems are suddenly enlightened. According to some of the current understanding of the book t

The application of factor space theory in big dataWang PeizhuangLiaoning University of Engineering and Technology(Speeches on the theme forum on big Data and data science progress, collated)China's data and machine intelligence Science workers shoulder the task of leading the big Data era, this is about whether we can successfully achieve the Chinese dream of the event. No matter how difficult, we must strive for the forefront. As a veteran in the fie

Quantum Theory Quantum Theory is obviously the most cutting-edge theory in the 21st century. Its Influence covers all aspects of human civilization, and even includes philosophy and culture. The classic materialism or idealism we have known have gradually blurred the margin after quantum theory. Our understanding of hi