第一次真正意义上参加kaggle比赛,都是工作之余看看别人的kernel,然后整理整理自己的分析代码. 总体来说,本次比赛对我而言更像一个入门比赛,更多的是走走kaggle比赛的整个流程,看看高手们都是怎么分析解决问题的.一边学习技术.理论知识.分析问题的思路,一边研究比赛题目.结果不是最重要的,最重要的收获与进步! 本次比赛总结启示: 1)没有充分考虑房屋价格随时间的变化,因为房间一段时间是涨价的,一段时间是降价的.本次俄罗斯房价训练数据从2011-2015.6,测试数据从2015.7月开始,…

一.模型与特征哪个重要? 参与Sberbank Russian Housing Market比赛,一开始使用sklearn的岭回归函数Ridge(),残差值一直是0.37左右,然后同样的特征又使用了XGboost,残差值降到了0.34左右,提高的还是挺显著的. 但是另外一些参赛选手,使用XGboost,残差值可以降到0.31左右.所以由此来看,xgboost模型确实厉害,效果很好. 通过比赛不断调整特征发现,特征多了未必好,少了重要特征更不行,只有留下最重要的特征,模型的残差值才会降到最低.所以…

We come nearest to the great when we are great in humility. 我们最为谦逊的时候越接近伟大. When you are powerful enought, you may be nearest to the great when you are great in humility, otherwise the humility may be meaningless. Sometimes, it may be better to show…

Extracting knowledge from knowledge graphs using Facebook Pytorch BigGraph 2019-04-27 09:33:58 This blog is copied from: https://towardsdatascience.com/extracting-knowledge-from-knowledge-graphs-e5521e4861a0 Machine learning gives us the ability to t…

https://www.seattlemet.com/articles/2015/4/24/the-10-best-neighborhoods-in-seattle-may-2015 By Darren Davis  4/24/2015 at 3:00pm  Published in the May 2015 issue of Seattle Met 2413 IMAGE: DOUG CHAYKA THE CONDO CRAZE Capitol Hill 27% own  •  73% rent…

Americans have long taken pride on their willingness to bet it all on a dream. But that risk-taking spirit appears to be fading. Three long-running trends suggest the U.S. economy has turned soft on risk: Companies add jobs more slowly, even in good…

Around September of 2016 I wrote two articles on using Python for accessing, visualizing, and evaluating trading strategies (see part 1 and part 2). These have been my most popular posts, up until I published my article on learning programming langua…

Looking to buy a scan tool or considering one of Autel Scanner impressive product line?. The company makes some of the best OBD scanners available on the market today. It’s safe to say that you can’t go wrong with an Autel Scanner. But out of them al…

Stock Market Indices USA Africa Asia and Pacific Canada Europe Middle East South America International BBC Global 30 - world stock market index of 30 of the largest companies by stock market value in Europe, Asia and the Americas. iShares MSCI EAFE I…

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