多阶段决策过程（ multistep decision process ）是指 这样一类特殊的活动过程，过程可以按时间顺序分解成若干个相互联系的阶段，在每一个阶段都需要做出决策，全部过程的决策是一个决策序列。 动态规划 （ dynamic programming ）算法 是解决 多阶段决策过程最优化问题 的一种常用方法，难度比较大，技巧性也很强。利用动态规划算法，可以优雅而高效地解决很多贪婪算法或分治算法不能解决的问题。动态规划算法的基本思想是：将待求解的问题分解成若干个相互联系的子问题，先求解子问题，然后从这些子问题的解得到原问题的解； 对于重复出现的子问题，只在第一次遇到的时候对它进行求解，并把答案保存起来，让以后再次遇到时直接引用答案，不必重新求解 。动态规划算法将问题的解决方案视为一系列决策的结果，与贪婪算法不同的是，在贪婪算法中，每采用一次贪婪准则，便做出一个不可撤回的决策；而在动态规划算法中，还要考察每个最优决策序列中是否包含一个最优决策子序列，即问题是否具有最优子结构性质。
标签： multistep decision process 过程
上传时间： 2015-06-09
上传用户：caozhizhi
Simulation of RM(1,3), equivalent to the (8,4,4) extended Hamming code. Soft-decision decoding performed by the Green machine
标签： Soft-decision Simulation equivalent decoding
上传时间： 2015-07-05
上传用户：lindor
making componet all about
上传时间： 2013-12-21
上传用户：源弋弋
machine learning, accuracy estimation, cross-validation, bootstrap, ID3, decision trees, decision graphs, naive-bayes, decision tables, majority, induction algorithms, classifiers, categorizers, general logic diagrams, instance-based algorithms, discretization, lazy learning, bagging, MineSet.
标签： decision cross-validation estimation bootstrap
上传时间： 2015-07-26
上传用户：赵云兴
Learning and Making Decisions When Costs and Probabilities are Both Unknown
标签： Probabilities Decisions and Learning
上传时间： 2014-01-21
上传用户：waitingfy
Find a classification error for a given decision surface D and a given set of patterns and targets
标签： given classification and decision
上传时间： 2013-12-18
上传用户：xinzhch
Hard-decision decoding scheme Codeword length (n) : 31 symbols. Message length (k) : 19 symbols. Error correction capability (t) : 6 symbols One symbol represents 5 bit. Uses GF(2^5) with primitive polynomial p(x) = X^5 X^2 + 1 Generator polynomial, g(x) = a^15 a^21*X + a^6*X^2 + a^15*X^3 + a^25*X^4 + a^17*X^5 + a^18*X^6 + a^30*X^7 + a^20*X^8 + a^23*X^9 + a^27*X^10 + a^24*X^11 + X^12. Note: a = alpha, primitive element in GF(2^5) and a^i is root of g(x) for i = 19, 20, ..., 30. Uses Verilog description with synthesizable RTL modelling. Consists of 5 main blocks: SC (Syndrome Computation), KES (Key Equation Solver), CSEE (Chien Search and Error Evaluator), Controller and FIFO Register.
标签： symbols length Hard-decision Codeword
上传时间： 2014-07-08
上传用户：曹云鹏
一个由Mike Gashler完成的机器学习方面的includes neural net, naive bayesian classifier, decision tree, KNN, a genetic algorithm, and some manifold learning algorithms.
标签： classifier includes bayesian decision
上传时间： 2015-09-11
上传用户：gaome
This code was used for making the practical measurements in section 2.3 of my thesis. This Matlab code allows an OFDM signal to be generated based on an input data file. The data can be random data, a grey scale image, a wave file, or any type of file. The generated OFDM signal is stored as a windows wave file, allowing it to be viewed, listened to and manipulated in other programs. The modified wave file can then be decoded by the receiver software to extract the original data. This code was developed for the experiments that I performed in my honours thesis, and thus has not been fully debugged. This is the original code developed for the thesis and so has several problems with it. The BER performance given by the simulations is infact Symbol Error Rate.
标签： This measurements practical section
上传时间： 2015-09-20
上传用户：tedo811
Making.Use.of.Javascript 关于Javascript的一本非常好的参考书！
标签： Javascript Making Use of
上传时间： 2014-01-26
上传用户：hewenzhi
