Programming VIP

1. What is Policy Gradients The basic idea of a strategic gradient is to output the probability of an action or action directly according to its state.So how to output, the simplest is to use a neural network. When we use a neural network to enter the current state, the network can output the probability of each action we take in this state. ...

1. The Development History of Terminal Terminal is the input and output equipment of computer system. For historical reasons, the concept of terminal is very confusing.The development of terminal has gone through three stages: character terminal, graphics terminal and network terminal. 1.1 Teletypewriter TTY(TeleTYpe) In the early days, because ...

Preface The mac address of a network card has been written in the factory, sometimes in the erasable eeprom, but there must be considerable expertise or professional equipment. For some mac addresses that are bound and do not want to change aft ...

Preface Review: Basic usage of Okhttp Okhttp3 Source Parsing (1)-OkHttpClient Analysis Okhttp3 Source Parsing (2)-Request Analysis Okhttp3 Source Parsing (3)-Call Analysis (Overall Process) Okhttp3 Source Parsing (4) - Interceptor and Design Mode The previous section talks about interceptors and design patterns, and today we talk about RetryAnd ...

Problem statement The original project http request is completed through feign + ribbon + urlconnection. Considering the network and cpu overhead caused by frequent connection release of urlconnection, http client is used as the connection pool. Upgraded, it is found that there are problems of calling downstream service code and tampering with ...

Association What is synergy? A single thread handles multiple tasks concurrently, and the program controls the synergistic switching + holding state. The synergistic switching speed is very fast, which blinds the eyes of the operating system and makes the operating system think that the CPU is running all the time. Processes or threads are cont ...

Writing simple crawlers using the urllib library that comes with the python system urlopen() Gets the html source for a URLread() Read the html source contentdecode("utf-8") converts bytes to strings #!/usr/bin/env python # -*- coding:utf-8 -*- import urllib.request html = urllib.request.urlopen('http://edu.51cto.com/course/8360.html ...

Generally speaking, we divide the class loading process of java into three main steps: loading, linking and initialization. The first stage is the loading stage. It is java that reads bytecode data from different data sources into JVM and maps it to JVM-approved data structures, and maps it to JVM-approved data structures (Class objects). The d ...

CentOS 7 System Service Control In CentOS system, the control scripts of various system services are placed in the directory of / usr / lib / system by default. The system CTL command tool can control the specified system services. System CTL command Common formats System CTL [control type] [service name] control type start: Run the spec ...

Catalog Linux Basic Learning 2 File directory structure File Naming Specification File System Structure Composition of linux applications Absolute and relative paths Directory name and base name Switch directories Switch to Home Directory Switch to the last dire ...