mrp algorithm

someone asked, why is F (x-1) +1 and 1 compared AH. The reason is simple: take F (2) as an example, F (2) =f (1+1), and f (1) = 1, that is, the result of F (2) is associated with F (1), whereas F (2) itself has an initial value of 1, the final value of F (2) According to the question is supposed to be through F (1) The value of the operation and its initial value select the larger one. And so on in the back. 2, this method is very ingenious, the main idea is this, I don't care what your sequen

than 100, so the corresponding questions are generated directly. The following class implements efficiency considerations in two scenarios. If traversal is fast, you can directly call AddTest to add one more time. If the query is fast, you can use KindOfTestNeed to extract the query conditions, the results generated by the current code are the same each time. If there is a real library, you can use the Randomization of the query results and the Randomization of the KindOfTestNeed condition to g

Reprint Address: http://blog.csdn.net/tianshuai1111/article/details/7674327 First, the Patrol defense algorithm For_each (container start Address, container end address, method to execute) [HTML] View plain copy #include Two, find algorithm int *find (int *begin,int *end,int value) In the interval begin,end of the posterior closure, find value if found, return the first qualifying element, otherwise re

A history of particle swarm optimization Particle swarm optimization (Complex Adaptive system,cas) is derived from the complex adaptive system. CAS theory was formally introduced in 1994, and CAS members are called principals. For example, the study of bird systems, in which each bird is called the subject. The subject is adaptable, it can communicate with the environment and other subjects, and change its structure and behavior according to the process of communication "learning" or "accumulati

Continuation, A*,dijkstra, performance comparison of bidirectional BFS algorithm and application of A * algorithm Author: July March 10, 2011.Source: Http://blog.csdn.net/v_JULY_v-------------------------------------------------- Introduction:The shortest path algorithm a * algorithm ,Dijkstra

I. The method of exhaustive Enumerate all the possibilities and go on to get the best results. As figure one, you need to go straight from point A to point G to know that F is the highest (best solution). The optimal solution obtained by this algorithm is certainly the best, but it is also the least efficient. Although the best solution can be obtained by exhaustive method, the efficiency is extremely low. In order to improve efficiency, you can not

Sort Categories sort by whether in memory Depending on whether the records to be sorted in the sort process are all placed in memory, the sort is divided into: inner and outer sort. For internal sorting, the performance of the sorting algorithm is mainly affected by 3 aspects:Time performance, auxiliary space, algorithmic complexity. according to the algorithm to achieve the complexity of classification S

Reprint please indicate source: http://www.cnblogs.com/tiaozistudy/p/twostep_cluster_algorithm.htmlThe two-step clustering algorithm is a kind of clustering algorithm used in SPSS Modeler, and it is an improved version of Birch hierarchical clustering algorithm. It can be applied to the clustering of mixed attribute datasets, and the mechanism of automatically de

1.3 scanning line Seed FillingAlgorithm The two seed filling algorithms described in sections 1.1 and 1.2 have the advantage of being very simple. The disadvantage is that recursive algorithms are used, which not only requires a large amount of stack space to store adjacent points, and the efficiency is not high. In order to reduce recursive calls in algorithms and reduce stack space usage, many improved algorithms are proposed, one of which is the scanning line Seed Filling

Reference: http://blog.csdn.net/hguisu/article/details/7996185more data mining algorithms :https://github.com/linyiqun/DataMiningAlgorithmLink AnalysisIn the link analysis there are 2 classic algorithms, one is the PageRank algorithm, and the other is the hits algorithm, plainly speaking, are doing link analysis. How to do it, continue to look down.PageRank algorithmTo talk about the function of the PageRan

Optimization Algorithm Starter series article catalog (in update):1. Simulated annealing algorithm2. Genetic algorithmsGenetic Algorithms (GA, Genetic algorithm), also known as evolutionary algorithms. Genetic algorithm is a heuristic search algorithm, which is inspired by Darwin's theory of evolution and used for refe

Apriori is a algorithm for frequent item set Mining and association rule learning over transactional databases. It proceeds by identifying the frequent individual items on the database and extending them to larger and larger item sets As long as those item sets appear sufficiently often in the database. The frequent item sets determined by Apriori can is used to determine association rules which highlight general trends in The database:this have appli

Opengl implements line scanning algorithm and area filling algorithm, and opengl AlgorithmOverview 1. Use the line scanning algorithm to draw a line segment. A straight line consists of discrete points. 2. Use the area Filling Algorithm to draw a polygon area. The area consists of discrete points. Development Environme

Learn the reason for this algorithm: Yesterday afternoon stroll, met the girlfriend is looking at the algorithm, suddenly asked me will not Freud algorithm. I agreed to, and then spent half an hour to learn the algorithm, and 5 minutes to listen to her, and also to share with you in need of friends, so that you in the

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1.3 Scanning line seed filling algorithm The advantages of the two seed filling algorithms described in sections 1.1 and 1.2 are very simple, with the disadvantage of using recursive algorithms, which not only require a lot of stack space to store adjacent points, but are inefficient. In order to reduce the recursive call in the algorithm and save the use of stack space, many improved algorithms are propos

The planar region filling algorithm is an important algorithm in the field of computer graphics, where the region fill gives the boundary of a region (or it can be without boundary, but gives the specified color), and requires that all pixel elements within the boundary range be modified to the specified color (or pattern fill). The most commonly used in area filling is the polygon fill, in this paper we di

Concept In statistical calculations, the maximal expectation (EM) algorithm is the algorithm for finding the maximum likelihood or maximum posteriori estimation of a parameter in the probability (probabilistic) model, where the probabilistic model relies on the invisible hidden variable (latent Variable). Maximum expectations are often used in the field of data clustering for machine learning and computer v

Second, scan line algorithm (Scan-line Filling) The scan line algorithm is suitable for the area filling of the vector graphics, only need to the geometric position of the polygon area, no need to specify the seed point, suitable for the computer automatic graphics processing occasions use, such as computer games and three-dimensional CAD software rendering and so on. To fill the vector polygon region, th

Data Structure and Algorithm Analysis Study Notes (2)-algorithm analysis, data structure and algorithm analysis I. Simplest understanding and use of algorithm analysis methods 1. First, you may be confused by the mathematical concepts. In fact, simply put, it is assumed that the execution efficiency of any statement is