gamification theory

Graph Theory (iv) ------ single-source shortest path of a non-negative weighted directed graph, Dijkstra algorithm, single-source dijkstra Dijkstra algorithm solves the single-source shortest path with weights on Directed Graph G = (V, E), but requires that the weights of all edges be non-negative. Dijkstra is a good example of greedy algorithms. Set a vertex set S. the weights of the final shortest path from the source point s to the vertex S in the

own, you are not used to the Stata programming method, so the code is not easy to reuse. Do File is a long time and you will feel a little messy. Furthermore, matrix operations and operations are not very useful. Later, I became interested in data science and machine learning and offered Python-based courses on platforms such as edX, Coursera, and Udacity. The most useful learning tools are the two Python courses (6.00.1x and 6.00.2x) at MIT on edX and the Intro to Data Science on Udacity. aft

Title DescriptionThe Song Dynasty historian Sima Guang in "the Capital Governance Tong Jian" has a well-known "the Moral Only Theory": "is therefore only then the virtuous all says the sage, only then the German and the Dead is the Fool, the German wins only then says the gentleman, only then wins the moralVillain. Whoever takes the technique of the person, Gou not saints, gentleman and with it, with the villain, not if the fool. ”Now give a number of

The set theory was created by the mathematician GeorgCantor, a mathematical branch based on a relational model. The Cantor set is defined as follows: set, we mean: any collection of M is the whole we perceive or think of, can be identified, the object m (called the elements of M. ── Joseph phw. Dauben and GeorgCantor (published by Princeton University) The set theory was created by the mathematician Georg C

Ultraviolet-10791-Minimum Sum LCM (number theory related !) Link: Minimum Sum LCM UV-10791Minimum Sum LCM Time Limit:3000 MS Memory Limit:Unknown 64bit IO Format:% Lld % llu SubmitStatus Description Minimum Sum LCM LCM(Least Common Multiple) of a set of integers is defined as the minimum number, which is a multiple of all integers of that set. it is interesting to note that any positive intege

The first part: Apple theoryEarly in the morning to open the refrigerator ready to take out the milk to eat breakfast, suddenly found that the refrigerator has accumulated four bottles of fresh milk, which does not include the room outside the milk box today's new two bottles. How to solve? This reminds me of the famous Apple theory, which has similar problems. Bought a bag of apples, a few days later, some Apple freshness has begun to change, and beg

Mathematics is the Queen of Science, and number theory is the Queen of Mathematics--Gauss.Then I continued the tail of the dog--the prime number is the Queen of number theory.Talking about prime numbers, can involve a lot of mathematical history of the daring work legend, such as in the last few days to see the "Remove the wine, how people enjoy life" problem, in an answer to a few big scientists, including a favorite prime mathematician, choose the m

Starting from this article, we began to explore the "forest" of number theory.Divisible:The problem of the division of numbers in number theory is nothing more than the approximate, multiple, approximate and multiple pairs of relative concepts, and if a is an approximate of B, then B is a multiple. We often use a|b to mean that B can divide a, that is, b/a is an integer, but "|" It is easy to confuse with absolute values, geometric definitions, condit

INC always is available for calls until all one of you or your wife .· Partition tolerance:remembrance INC would work even if there are a communication loss between you and your wife!The Sixth chapter: summaryLet's look at the cap theory now. It says: When you design a distributed system, you can only achieve consistency, availability, and partition tolerance in both:? Consistency: When your customers call again, they'll always find the information t

Basic theory of software Testing (1) IBM Production Model 1 bibliography"ibm-from rookie to test architect-a growth diary for a test engineer" Publishing house: Electronic Industry publishing house Impressions: June 2013 IBM Principal Engineer 2 Important RemindersWarningIBM's business nature is to do large enterprise IT solutions, still belong to the relatively good traditional enterprises. Therefore, the traditional software en

needed to accelerate, and the infinitely large energy needed to accelerate when the object is infinitely near the speed of light, which in theory is not permissible, so that no object can be faster than the speed of light.We know that the light emitted by galaxies far away from us takes a certain amount of time to reach us, which affects us. Similarly, any event in the universe takes some time to influence other events, since the speed of light is th

Together Chew PRML-1.2 probability theory@copyright Reprint Please specify the source http://www.cnblogs.com/chxer/A key concept in the field of pattern recognition are that of uncertainty.It can be seen that probability theory in pattern recognition is obviously a very important chunk.Reading other books in the probability of this is also very tangled.We also use an example to understand some important con

Algebraic system partThe principle of pigeon nest based on basic theorem Group theory Guang Qun Semi-group Different points Group The order of the Group and the Order of the elements Accompany set and Lagrange theorem Special groups Exchange/Abelian group Cyclic group Sylow theorem Rings and fields Ring Whole ring Domain

Chapter I. Stochastic events and probabilitiesChapter two stochastic variables and their distributionsChapter three multivariate random variables and their distributionsThe fourth chapter law of large numbers and the central limit theoremThe fifth chapter statistic and its distributionThe sixth chapter parameter estimationThe seventh chapter hypothesis testEighth chapter analysis of variance and regression analysisChapter I. Stochastic events and probabilities1.1 Random events and their operatio

days, the whole world will know (my retrogression)."The 10,000-hour genius theory is not just 10,000 hours as simple as that. "I suck, so it's not worth going on. "Yes, I know there's a better way to do it, but that's genius, I can't." "I just want to get better!" "The above three sentences in reality correspond to three kinds of people: straggling, rookie, cattle people." ”Attention, connection, build, integrity, alertness, attention, error, repetit

just relatively prime t Riples).The InputThe input consists of a sequence of positive integers, one per line. Each integer in the input file would be less than or equal to 1,000,000. Input is terminated by End-of-file.The OutputFor each of the integer N in the input file print, the integers separated by a space. The first integer is the number of relatively prime triples (such, component of the triple is). The second number is the number of positive integers, and is not a part of any triple who

two options,First, the sacrifice of data consistency, in response to the old data V0 to the user;Second, sacrificing availability, blocking waits until the network connection is restored, data update operation M is complete, and then the user responds to the latest data V1.This process proves that a distributed system that satisfies partition fault tolerance can only choose one of both consistency and availability.iv. Cap Trade-offsWith the CAP theory