进化计算研究生班: 开发了TopCoder马拉松比赛49:megpartty的解决方案。我的小组正在测试不同的域表示法，以及不同的表示法如何影响ga找到正确答案的能力。我们为这个问题编写了自己的代码。

Neuroevolution and Generative and Developmental Systems, Graduate Class: Developed an Othello game board evaluator that was used in the min-max tree of a computer player. The player was set to evaluate one-deep into the game, and trained to play against a greedy computer player that considered corners of vital importance. The training player saw either 3 or 4 deep (I'll need to look at my config files to answer, and they're on a different computer). The goal of the experiment was to compare Novelty Search to traditional, fitness-based search in the Game Board Evaluation domain. Results were relatively inconclusive, unfortunately. While both the novelty search and fitness-based search methods came to a solution (showing that Novelty Search can be used in the Othello domain), it was possible to have a solution to this domain with no hidden nodes. Apparently I didn't create a sufficiently competent trainer if a linear solution was available (and it was possible to have a solution right out of the gates). I believe my implementation of Fitness-based search produced solutions more quickly than my implementation of Novelty search, this time. (this isn't always the case). Either way, I used ANJI, "Another NEAT Java Implementation" for the neural network code, with various modifications. The Othello game I wrote myself.

我几周前做了这个有趣的小玩意。它生成有趣的互联网图像使用GA。有点傻，但很好笑。

http://www.twitterandom.info/GAFunny/

对此有一些见解。它是一些mysql表。一个用于图像列表及其评分(即适合度)，另一个用于子图像及其在页面上的位置。

子图像可以有几个细节，但不是全部实现:+大小，倾斜，旋转，+位置，+image_url。

当人们投票决定这张照片有多有趣时，它或多或少会流传到下一代。如果它存活下来，它会产生5-10个带有轻微突变的后代。目前还没有交叉。

我构建了一个简单的GA，用于在音乐播放时从频谱中提取有用的模式。输出用于驱动winamp插件中的图形效果。

输入:一些FFT帧(想象一个二维浮点数组) 输出:单个浮点值(输入的加权和)，阈值为0.0或1.0 基因:输入权重 适应度函数:占空比、脉宽、BPM在合理范围内的组合。

我将一些ga调整到频谱的不同部分以及不同的BPM限制，所以它们不会趋向于收敛到相同的模式。来自每个种群的前4个的输出被发送到渲染引擎。

一个有趣的副作用是，整个人群的平均健康状况是音乐变化的一个很好的指标，尽管通常需要4-5秒才能发现。

As part of my thesis I wrote a generic java framework for the multi-objective optimisation algorithm mPOEMS (Multiobjective prototype optimization with evolved improvement steps), which is a GA using evolutionary concepts. It is generic in a way that all problem-independent parts have been separated from the problem-dependent parts, and an interface is povided to use the framework with only adding the problem-dependent parts. Thus one who wants to use the algorithm does not have to begin from zero, and it facilitates work a lot.

你可以在这里找到代码。

你可以用这个算法找到的解决方案已经在科学工作中与最先进的算法SPEA-2和NSGA进行了比较，并且已经证明 算法的性能相当，甚至更好，这取决于您用来衡量性能的指标，特别是取决于您正在关注的优化问题。

你可以在这里找到它。

同样，作为我的论文和工作证明的一部分，我将这个框架应用于项目组合管理中的项目选择问题。它是关于选择对公司增加最大价值的项目，支持公司的战略或支持任何其他任意目标。例如，从特定类别中选择一定数量的项目，或最大化项目协同作用，……

我的论文将该框架应用于项目选择问题: http://www.ub.tuwien.ac.at/dipl/2008/AC05038968.pdf

之后，我在一家财富500强公司的投资组合管理部门工作，在那里他们使用了一种商业软件，该软件还将GA应用于项目选择问题/投资组合优化。

更多资源:

框架文档: http://thomaskremmel.com/mpoems/mpoems_in_java_documentation.pdf

mPOEMS演示论文: http://portal.acm.org/citation.cfm?id=1792634.1792653

实际上，只要有一点热情，每个人都可以很容易地将通用框架的代码适应任意的多目标优化问题。

我不知道家庭作业算不算…

在我学习期间，我们推出了自己的程序来解决旅行推销员问题。

我们的想法是对几个标准进行比较(映射问题的难度，性能等)，我们还使用了其他技术，如模拟退火。

它运行得很好，但我们花了一段时间来理解如何正确地进行“复制”阶段:将手头的问题建模成适合遗传编程的东西，这对我来说是最难的部分……

这是一门有趣的课程，因为我们也涉猎了神经网络之类的知识。

我想知道是否有人在“生产”代码中使用这种编程。

没有家庭作业。

1995年，我作为专业程序员的第一份工作是为标准普尔500指数期货编写一个基于遗传算法的自动交易系统。该应用程序是用Visual Basic 3 [!我不知道我当时是怎么做的，因为VB3甚至没有课程。

The application started with a population of randomly-generated fixed-length strings (the "gene" part), each of which corresponded to a specific shape in the minute-by-minute price data of the S&P500 futures, as well as a specific order (buy or sell) and stop-loss and stop-profit amounts. Each string (or "gene") had its profit performance evaluated by a run through 3 years of historical data; whenever the specified "shape" matched the historical data, I assumed the corresponding buy or sell order and evaluated the trade's result. I added the caveat that each gene started with a fixed amount of money and could thus potentially go broke and be removed from the gene pool entirely.

在对种群的每一次评估之后，幸存者被随机杂交(通过混合来自两个亲本的片段)，一个基因被选择为亲本的可能性与它产生的利润成正比。我还添加了点突变的可能性，让事情变得有趣一点。经过几百代这样的基因，我最终得到了一个基因群，它可以把5000美元变成平均约10000美元，而且没有死亡/破碎的可能性(当然是在历史数据上)。

Unfortunately, I never got the chance to use this system live, since my boss lost close to $100,000 in less than 3 months trading the traditional way, and he lost his willingness to continue with the project. In retrospect, I think the system would have made huge profits - not because I was necessarily doing anything right, but because the population of genes that I produced happened to be biased towards buy orders (as opposed to sell orders) by about a 5:1 ratio. And as we know with our 20/20 hindsight, the market went up a bit after 1995.