What is Data Leakage¶ Data leakage is one of the most important issues for a data scientist to understand. If you don't know how to prevent it, leakage will come up frequently, and it will ruin your models in the most subtle and dangerous ways. Speci…

参考这篇: https://blog.csdn.net/jiandanjinxin/article/details/54633475 再论数据科学竞赛中的Data Leakage 存在和利用这种倒‘因’为‘果’的feature的现象,叫数据竞赛中的Data Leakage. Data Leakage的原因 以此我们可以看出,Data Leakage 基本都是在准备数据的时候,或者数据采样的时候出了问题,误将与结果直接相关的feature纳入了数据集.这样的纰漏,比较难以发现. 必须重视因果性 我…

refer to:  https://www.kaggle.com/dansbecker/data-leakage There are two main types of leakage: Leaky Predictors and a Leaky Validation Strategies. Leaky Predictors This occurs when your predictors include data that will not be available at the time y…

构建的每一颗树的数据都是有放回的随机抽取的(也叫bootstrap),n_estimators参数是你想设置多少颗树,还有就是在进行树的结点分裂的时候,是随机选取一个特征子集,然后找到最佳的分裂标准.…

Kaggle Bike Sharing Demand Prediction – How I got in top 5 percentile of participants? Introduction There are three types of people who take part in a Kaggle Competition: Type 1: Who are experts in machine learning and their motivation is to compete…

DeepLearning to digit recongnizer in kaggle 近期在看deeplearning,于是就找了kaggle上字符识别进行练习.这里我主要用两种工具箱进行求解.并比对两者的结果. 两种工具箱各自是DeepLearningToolbox和caffe. DeeplearningToolbox源代码解析见:http://blog.csdn.net/lu597203933/article/details/46576017 Caffe学习见:http://caffe.b…

Enabling discretionary data access control in a cloud computing environment can begin with the obtainment of a data request and response message by an access manager service. The response message can be generated by a data storage service in response…

Common Pitfalls In Machine Learning Projects In a recent presentation, Ben Hamner described the common pitfalls in machine learning projects he and his colleagues have observed during competitions on Kaggle. The talk was titled "Machine Learning Grem…

https://www.quora.com/How-do-I-learn-machine-learning-1?redirected_qid=6578644   How Can I Learn X? Learning Machine Learning Learning About Computer Science Educational Resources Advice Artificial Intelligence How-to Question Learning New Things Lea…

这篇博客从用python实现分析数据的一个完整过程.以下着重几个python的moudle的运用"pandas",""wordcloud","matlibplot": 1.导入数据,看看数据的结构内容: import pandas as pd mytext = pd.read_csv(r'F:\kaggle data\2016-us-presidential-debates\test.csv',encoding = 'iso-8859-…