Programmer Group

preface This learning note is the learning content of Alibaba cloud Tianchi Longzhu plan machine learning training camp. The learning links are: https://tianchi.aliyun.com/specials/promotion/aicampml Competition link: Come and explore happiness together! Friendly reminder: I just started learning machine learning. Some places may not b ...

HanLP Chinese word segmentation, person name recognition and place name recognition Experimental purpose Download and install HanLP natural language processing package from the Internet;Familiar with the basic functions of HanLP natural language processing package;Using the information obtained by the web crawler, call the API of HanLP for Ch ...

The core content of this article is data cleaning. Data cleaning The steps of data work should be: Data acquisitionData cleaningData analysisData visualization and modeling Therefore, in the last blog post, I said that the next blog post will talk about an important step in data analysis We should know that data cleaning is carried out for t ...

Development environment: Development environment: Python 3 Tools: pandas, matplotlib.pyplot Data source: Data address: data set Data Description: a total of 28010 pieces of data occurred in one month were collected in this data set, Include the following: ['order number', 'total amount', 'buyer's actual payment amount', 'receiving address' ...

Hello, everyone. I'm a studious junior brother. Today, I will continue to explain the second method I wrote: etree method based on lxml library combined with xpath method - crawling the contents of the ranking list and generating the word cloud map. The learning experience is mainly divided into three lectures:         ...

order The best way to represent data depends not only on the semantics of the data, but also on the type of model used. linear model With tree based models (e.g Decision tree，Gradient lifting tree and Random forest )It is a very common model with many members. They have very different properties when dealing with different feature representat ...

Review review Python provides a large number of excellent function packages for data display. Among them, matplotlib module can easily draw and make high-quality data packages such as line chart, histogram and scatter chart. About the matplotlib module, we have studied the basic framework and common methods of matplotlib in the early stage P ...

1. Question Settings 1.   Data cleaning for column G is classified as None, 2000-3999, 4000-5999, 6000-7999, 8000-9999, and more than 10,000. 2.   Data cleaning for AA columns requires three categories: Photoshop, CorelDRAW,AI; Contains one or two of them; Not at all. 3.   The job applicant information can be classified into 4 ...

My programming enlightenment is the c language. I also took java in the University and learned very little. Later, my programming homework mainly depends on python and c + +, but I haven't learned systematically. Generally, I look at other people's code and change it myself. If I don't understand it, I check it temporarily. In fact, the Univers ...

Data analysis and mining xgboost&git git address git Upload files to GitHub for the first time Enter the managed folder Open git bash Initialization command git init View file status in directory git status # New or modified files are red Manage specified files (red to green) git add file name git add . # All documents ...