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推荐系统

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什么是推荐系统,就是根据你的个人爱好在海量的信息中,推荐一些你感兴趣的内容,比较常见的应用比如amazon的销售推荐等等广告内容。

下面是一篇关于推荐系统开源软件的列表,收藏一下,方便以后查看。

http://www.resyschina.com/2014/02/open-source-recsys.html

推荐系统开源软件列表

发表于:2014年02月27日 分类:算法学术, 资源 添加评论

收集和整理了目前互联网上能找到的和推荐系统相关的开源项目(Open Source Software | Recommendation),罗列如下,希望对本领域感兴趣的朋友有帮助(文/陈运文)


SVDFeature

由上海交大的同学开发(开发语言C++),代码严谨、质量高,我们参加KDD竞赛时用过,很可靠和方便,而且出自咱们国人之手,所以置顶推荐!

项目地址:
http://svdfeature.apexlab.org/wiki/Main_Page

SVDFeature包含一个很灵活的Matrix Factorization推荐框架,能方便的实现SVD、SVD++等方法, 是单模型推荐算法中精度最高的一种。SVDFeature代码精炼,可以用相对较少的内存实现较大规模的单机版矩阵分解运算。
另外含有Logistic regression的model,可以很方便的用来进行ensemble运算





Crab

项目地址:
http://geektell.com/story/crab-recommender-systems-in-python/



系统的Tutorial可以看这里:
http://muricoca.github.io/crab/
Crab是基于Python开发的开源推荐软件,其中实现有item和user的协同过滤。据说更多算法还在开发中,
Crab的python代码看上去很清晰明了,适合一读


CofiRank

C++开发的 Collaborative Filtering算法的开源推荐系统,但似乎2009年后作者就没有更新了,
CofiRank依赖boost库,联编会比较麻烦。不是特别推荐
项目地址:
http://www.cofirank.org/


EasyRec

Java开发的推荐系统,感觉更像一个完整的推荐产品,包括了数据录入模块、管理模块、推荐挖掘、离线分析等,整个系统比较完备。
项目地址:
http://easyrec.org/

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GraphLab

项目地址:
http://graphlab.org/



Graphlab是基于C++开发的一个高性能分布式graph处理挖掘系统,特点是对迭代的并行计算处理能力强(这方面是hadoop的弱项),
由于功能独到,GraphLab在业界名声很响
用GraphLab来进行大数据量的random walk或graph-based的推荐算法非常有效。
Graphlab虽然名气比较响亮(CMU开发),但是对一般数据量的应用来说可能还用不上


Lenskit

http://lenskit.grouplens.org/

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这个Java开发的开源推荐系统,来自美国的明尼苏达大学,也是推荐领域知名的测试数据集Movielens的作者,
他们的推荐系统团队,在学术圈内的影响力很大,很多新的学术思想会放到这里




Mahout

网址
http://mahout.apache.org/
Mahout知名度很高,它是Apache基金资助的重要项目,在国内流传很广,并已经有一些中文相关书籍了。注意Mahout是一个分布式机器学习算法的集合,协同过滤只是其中的一部分。除了被称为Taste的分布式协同过滤的实现(Hadoop-based,另有pure Java版本),Mahout里还有其他常见的机器学习算法的分布式实现方案。



另外Mahout的作者之一Sean Owen基于Mahout开发了一个试验性质的推荐系统,称为Myrrix, 可以看这里:

http://myrrix.com/quick-start/


MyMediaLite

http://mymedialite.net/index.html
基于.NET框架的C#开发(也有Java版本),作者基本来自德国、英国等欧洲的一些高校。
除了提供了常见场景的推荐算法,MyMediaLite也有Social Matrix Factorization这样独特的功能
尽管是.Net框架,但也提供了Python、Ruby等脚本语言的调用API
MyMediaLite的作者之一Lars Schmidt在2012年KDD会议上专门介绍过他们系统的一些情况,可惜由于.Net开发框架日渐式微,MyMediaLite对Windows NT Server的系统吸引力大些,LAMP网站用得很少


LibFM

项目网址:
http://www.libfm.org/
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Chain Monte Carlo)优化算法,比常见的SGD(随即梯度下降)优化方法精度要高(当然也会慢一些)






LibMF

项目地址: http://www.csie.ntu.edu.tw/~cjlin/libmf/ 注意LibMF和上面的LibFM是两个不同的开源项目。这个LibMF的作者是大名鼎鼎的台湾国立大学,他们在机器学习领域享有盛名,近年连续多届KDD Cup竞赛上均获得优异成绩,并曾连续多年获得冠军。台湾大学的风格非常务实,业界常用的LibSVM, Liblinear等都是他们开发的,开源代码的效率和质量都非常高
LibMF在矩阵分解的并行化方面作出了很好的贡献,针对SDG优化方法在并行计算中存在的locking problem和memory discontinuity问题,提出了一种矩阵分解的高效算法,根据计算节点的个数来划分评分矩阵block,并分配计算节点。系统介绍可以见这篇论文(Recsys 2013的 Best paper Award)
Y. Zhuang, W.-S. Chin, Y.-C. Juan, and C.-J. Lin. A Fast Parallel SGD

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for Matrix Factorization in Shared Memory Systems. Proceedings of ACM Recommender Systems 2013.




PREA

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Algorithms Toolkit, 开发语言为Java。也是一个轻量级的开源项目

项目网址:
http://mloss.org/software/view/420/
放在Mloss这个大project下。我个人感觉PREA还是比较简陋的,参加开发的三位工程师Joonseok Lee, Mingxuan Sun, Guy Lebanon更新频率很低,提供的资料也少。
不过Mloss下倒是能找到其他一些推荐开源项目
http://mloss.org/software/tags/collaborative-filtering/


Python-recsys

一个非常轻量级的开源推荐系统,python开发,作者似乎只有一位,
Python-recsys主要实现了SVD、Neighborhood SVD推荐算法,
这个项目麻雀虽小五脏俱全,评估数据(Movielens,Last.fm)、评估框架也都有
API也很简单清晰,代码简洁,属于推荐入门的良好教材。
不过真正要用到实际系统中,还是得补充很多内容
github的地址位于
https://github.com/ocelma/python-recsys
项目的介绍见:
http://ocelma.net/software/python-recsys/build/html/


RapidMiner

项目网址为:
http://rapidminer.com/
Java语言开发,RapidMiner(前身是Yale)已经是一个比较成熟的数据挖掘解决方案了,包括常见的机器学习、NLP、推荐、预测等方法(推荐只占其中很小一部分),而且带有GUI的数据分析环境,数据ETL、预处理、可视化、评估、部署等整套系统都有。



另外RapidMiner提供commercial license,提供R语言接口,感觉在向着一个商用的数据挖掘公司的方向在前进。


Recommendable

基于Ruby语言开发,实现了一些评分预测的推荐算法,但是整体感觉比较单薄,
github上地址如下:
https://github.com/davidcelis/recommendable/


Recommenderlab

基于R语言开发的开源推荐程序,对经常使用R语言的工程师或者BI数据分析师来说,recommenderlab的出现绝对算得上是福音了
项目地址:
http://cran.r-project.org/web/packages/recommenderlab/index.html



基于Recommenderlab来开发推荐系统,代码会非常精简,因为推荐系统所依赖的user-item rating matrix对擅长处理向量运算的R语言来说再方便不过了,
但是在实际推荐系统中,需要考虑的问题和逻辑都比较复杂,用Recommenderlab不是很灵活。另外受限于R语言对内存的限制,Recommenderlab不太适用于过大规模的推荐应用


Waffles

SF地址:
http://waffles.sourceforge.net/
Waffles英文原意是蜂蜜甜饼(见logo),在这里却指代一个非常强大的机器学习的开源工具包,基于C++语言开发。
Waffles里包含的算法特别多,涉及机器学习的方方面面,推荐系统位于其中的Waffles_recommend tool,大概只占整个Waffles的1/10的内容(其它还有分类、聚类、采样、降维、数据可视化、音频处理等许许多多工具包,估计能与之媲美的也就数Weka了)

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