Day 10 | day 28 learn PyQt5, box layout

In most programming languages, the menu bar and toolbar will provide the corresponding layout, and the layout manager is required for the of the work area. Of course, in PyQt5, most components can be positioned and placed with x-axis and y-axis coordinates, but it takes time and effort. There will also be problems that the size and position of ...

Posted by xisle on Tue, 21 Sep 2021 21:23:08 -0700

Python - Decision Tree Classification Model Pruning

Catalog 1. Decision Tree Model Data Classification 2. Decision tree pruning alleviates over-fitting problems *Common decision tree algorithms are ID3, C4.5, and CART. The ID3 algorithm, proposed by Quinlan, an Australian computer scientist, in 1986, is one of the classic decision tree algorithms. The ID3 algorithm uses information gain to s ...

Posted by notsleepy on Sat, 18 Sep 2021 08:16:04 -0700

Taobao user behavior data analysis MySQL

Overall user shopping What are pv (total visits), average daily visits, uv (total number of users), the number of users with purchase behavior, the shopping situation of users and the repurchase rate? User behavior transformation funnel How about the conversion rate of click Add shopping cart purchase links? What is the abandonment rate of s ...

Posted by shaneiadt on Fri, 17 Sep 2021 18:10:38 -0700

❤️ Introduction teaching of "python data analysis" with 80000 words ❤️ Afraid of learning? Hand in hand Church ❤️

preface Pandas is the most important data analysis toolkit in Python. It is the abbreviation of Panel Data Analysis and the most popular Python data analysis tool at present. With the development of digital transformation of global economy, a large number of data have been accumulated in all walks of life. Companies with unique insights fr ...

Posted by dreamkiller23 on Wed, 15 Sep 2021 16:34:45 -0700

Python data analysis - illustration of influencing factors of house prices

Abstract Over the past two years, OF has been paying attention to house prices. Putting aside some external factors such as policies and real estate speculation, what are the main factors affecting house prices for the house itself? OF selected several factors for analysis: house age, area, number OF floors (1 / 1.5 / 2 / 2.5 /...), number O ...

Posted by sofasurfer on Tue, 14 Sep 2021 17:03:47 -0700