Programmer Think

@[TOC] (non negative matrix factorization practice) 1. Application Overview NMF can be applied in a wide range of fields because it has a good explanation of the local characteristics of things. In many applications, NMF can be used to discover image features in database, which is convenient for rapid and automatic recognition;It can discove ...

At present, I am in the third year of junior high school. My ability is limited. If there are deficiencies, I hope to give more advice. I saw one a week ago video So I want to use python to solve this problem. ○ analysis Suppose there is a charged particle q in the plane with a mass of m. There is a uniform magnetic field B in space, which ...

Today's article shows a python "virus", which infects other Python files to create a back door. The back door uses Python's built-in socket module to create a listener to connect to Python's built-in sub process module to execute commands on the target. At the same time, it also establishes persistence by creating a cronjob to run the ...

Serial port class Two ttl modules are used on win computer You can see the information of another serial port when inserting. The other serial port I see here is COM11 You need to install the serial port tool in advance. Here I choose the conda environment, so I just switch to the virtual environment, and then install pip Let's start wi ...

Part I TDD and Django Foundation Chapter 1 using functional testing to assist in the installation of Django (1) Get Django running Creating files: functional_tests.py from selenium import webdriver browser = webdriver.Chrome() browser.get('http://localhost:8000') assert 'Django' in browser.title Create directory: Django admin start ...

Enigma comes from Greek and is interpreted in English as "a mystery, an incomprehensible thing". -- Excerpt from Ele Laboratory As we know, enigma machine is an important information encryption machine of the German army in World War II, which has many characteristics. First of all, it is an all-in-one encryption and decryption ...

This tutorial quickly and completely presents the process of programming in Python language through 2048 games, and organically combines the contents previously introduced. 2048 is a puzzle game popular on mobile phones, tablets and other terminal devices. It was first released in March 2014. The main interface is shown in Figure 1. Figure 1 ...

function What are the functions in Python? In Python, function is a set of related statements that perform a specific task. Function helps to decompose our program into smaller modular blocks. As our plans grow, features make them more organized and manageable. In addition, it avoids duplication and makes code reusable Syntax for creating ...

5.3 using pre trained convolutional neural networks Pre trained network: It has been used in large data sets (usually large-scale image classification tasks) Training Practice good , ...

preface A few days ago, my classmate Wazi asked me to help with some musical homework, homework content collection network, data volume 1W homework evaluation, and then do some work related to data analysis. Easy cloud homework has Internet bugs and solutions. If you find a big experiment, you still need to hand in the experiment report. Here ...