Python Basics
Python Basics

metaVIPER||Identify protein activity in single cells

... Jesse
schedule1 min read
Python Basics

scLearn||A new method for single cell type identification

... Vivian
schedule2 min read
Python Basics

Regression evaluation index (MSE/RMSE/MAE/R-squared)

... Aaron
schedule2 min read
Python Basics

Multi-classification problem in logistic regression

In general, there are two ways to solve the multi-classification problem:1) OvR (One vs Rest) classifies one and all the remaining categories each time, n categories are classified n times, and the one with the highest classification score is selected.2). OvO (One vs One) pairwise combination, for example, there are six groups in four categories, choose the category with the highest win.The following is the usage in sklearn (the default is OVR):from sklearn.linear_model import LogisticRegression

... Sophia
schedule1 min read
Advanced Python
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Still flustered for the interview, 69 interview questions to help you improve your skills

... Ezekiel
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trending_up Advanced Python

JavaScript function objects that crawlers have to learn

... Angel
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trending_up Advanced Python

Automatically generate Hu Ge idol calendar with Python

... Lucas
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trending_up Advanced Python

What pits will you encounter when looking for a job interview (school recruitment)

... George
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trending_up Advanced Python

Here is how to use Python to download music on major platforms

... Colton
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trending_up Advanced Python

A mechanical student's Python conversion narrative

... Hunter
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Python Web Development
Python Web Development

Implement your own TensorFlow (1)-calculation graph and forward propagation

Preface Some time ago, because the subject needs to use TensorFlow for a while, I feel that this framework is very interesting. In addition to building a complex neural network, it can also optimize other calculation models that you need, so I have always wanted to learn to write a similar graph calculation framework by myself. A few days ago, the group held a meeting and decided to implement a crude version of the graph calculation framework that imitated the TensorFlow interface to learn the w

... Adriana
schedule 13 min read
Python Web Development

Broadcasting mechanism of NumPy binary operation

There is a very convenient feature in NumPy: broadcasting. When we perform binary calculations (such as addition, multiplication) on two numpy arrays of different lengths, broadcasting works silently behind the scenes. In this article, we will introduce numpy broadcasting. What is broadcastingLet's get to know broadcasting through a simple example, consider the following codeimport numpy as np a = np.array([0, 1, 2]) b = np.array([5, 5, 5]) c = a + ba+b actually adds each pair of elements at the

... Alan
schedule 5 min read
Python Web Development

Socket name and DNS resolution in Python network programming

This time I will talk about the socket name and DNS, and it will also involve the sending and receiving of network data and the occurrence and processing of network errors. Let's talk about the socket name. There are five main decisions to be made when creating and deploying each socket object. The host name and IP address are the last two of them.The general steps to create and deploy sockets are as follows:import socket s = socket.socket(socket.AF_INET, socket.SOCK_DREAM) s.bind(('localhost',

... Adriana
schedule 8 min read
Machine Learning
Machine Learning

Recommend an efficient Python crawler learning path!

If you observe carefully, it is not difficult to find that there are more and more people who understand crawlers and learn crawlers. On the one hand, more and more data are available on the Internet. On the other hand, more and more programming languages ​​like Python provide Excellent tools to make crawlers simple and easy to use.For Xiaobai, crawling may be a very complicated and technically difficult thing. For example, some people think that learning crawlers must be proficient in Python, a

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Machine Learning

Is it better to learn python by yourself or go to a training institution? This question should be analyzed like this

Because python is currently very popular and widely used, it is one of the hottest industries at present, with great competition, high wages, and excellent future development.My personal suggestion: If the conditions are good and the burden is not that big, you can choose training. The training will be better than your self-study. If you learn well, self-study will definitely be more difficult. At present, the training fee for python is 2W+, which is only the training fee, plus some other things

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Machine Learning

Python show operation, use python to change the secret of roommate's computer boot, just a few steps!

Today, I will teach you to use Python scripts to control the power-on passwords of your friends' Windows computers. That’s right, it’s a password generated randomly by random(), only you know it~The code is divided into two parts: client side and server side.Operation method: Run the server side on your own computer, and then run the client side script on your partner’s computer.Principle: The client will randomly generate a password on your little partner's computer and send it to the server th

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Machine Learning

2020 Python learning route and learning goal planning are taken away, thank you!

Can't find a complete learning route? The editor shares the 2020 Python learning route and learning goal planning. I don’t appreciate it. Python, as a particularly popular programming language this year, is the stepping stone in the AI ​​field, the leading language in the AI ​​era. Python has entered the teaching materials for elementary school students. If you don’t learn Python in the future, it is not just knowledge. I will be out of touch with the children and have no common topics. As progr

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Machine Learning

Operators of Python basic study notes

Many people have more or less misunderstandings about the mathematical ability in programming learning. Although every programming language includes methods for processing numbers and performing mathematical calculations, it is not as difficult as some people think, on the contrary, it is very difficult. Simple, after all, you don't have to be a math genius to learn programming well. This article summarizes the Python basic study notes about operators for everyone, let's take a look!Python opera

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Machine Learning

The core technology that Python web crawler engineers need to master

Introduction to the Python web crawler course:In order to make people with Python basics suitable for the needs of the job, the editor has launched a comprehensive, systematic and simple Python web crawler entry-level course, which not only explains the basic knowledge necessary for learning web crawlers, but also adds a crawler framework. After you finish learning the content, you will be able to fully grasp the various techniques of crawling and parsing web pages, and you can also master some

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Machine Learning

How to install Python on Linux system? Novice tutorial

The first step for beginners to get started with Python is to install Python on your computer. Some people may ask, how to install Python on Linux system? This article has prepared a tutorial for you to install Python for novices. It almost teaches you how to operate it by hand. As long as you try to follow the instructions below, you can successfully install Python under Linux~The first step is to use the Linux package manager to download and install gedit. Then put gedit (that is, your editor)

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