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Preface In the previous articles, PCA and SVD dimensionality reduction are shared. Today, another dimensionality reduction method, auto encoding, is shared. What is self coding Self coding is a data compression algorithm. The characteristics of encoder and decoder are as follows: For specific data Lossy compression Automatic learning The enco ...

Catalog I. Preface 2, Input, read and output employee data. get and post submission methods 1. HTML form submission Code: addEmp.html 2. Profile code: web.xml 3. Java code: AddEmpServlet.java 4. Effect demonstration (1) post submission method (2) get submission method (3) Description I. Pr ...

Recently, the project needs to crawl the historical weather data of Hefei City, analyze several weather data websites, and finally select Weather post website . discuss the problems encountered in the implementation process for future reference. Step analysis Here, I use the requests library beautiful ...

Preliminary preparation: (1) Install requests (get HTML information for the entire web page) In cmd, use the following command to install requests: pip install requests (2) Install beautiful soup4 (parse HTML information and extract what we need) In cmd, use the following command to install requests: p ...

1, Process thinking of data analysis 1. Clarify the purpose and thinking of the analysis / put forward the hypothesis 2. Data collection 3. Data processing / collation 4. Data analysis / validation assumptions 5. Data presentation / visualization chart 6. Report writing 2, Analysis purpose Demand 0 ...

Data is the premise of data analysis. This paper mainly describes how to use Python to collect the basic stock data of Shanghai, Shenzhen and China: stock list and stock price. 1. Stock List As we all know, for A shares, there are two exchanges in China, namely the Shanghai Stock Exchange and the Shenzhen Stock Exchange.We mainly get a list ...

Number Number Number In python's documentation, there are several points to note: The Math module does not support functions of complex numbers, which are calculated using cmath.So most of them don't support complex numbers. Under the math module, floating-point numbers are returned unless the label ...

PyQt project practice work assistant (4 use QSqlTableModel and tableView to implement Todolist) In this part, the functions of querying, adding, modifying, deleting and exporting todolist work to do are realized through QSqlTableModel and tableView control Article directory PyQt project practice wor ...

Intelligent target detection 18 -- Keras builds FasterRCNN target detection platform Learn foreword What is FasterRCNN target detection algorithm Source download Fast RCNN implementation ideas 1, Forecast part 1. Introduction to backbone network 2. Get Proposal box 3. Decoding of Proposal box 4. Ut ...

Don't talk too much, just go to the script. The first is the server: using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Net; using System.Net.Sockets; using System.Threading; namespace Sever { class Program { static byte[] buffer = new byte ...