How do I speed up my calculations > 150 times
How do I speed up my calculations > 150 times
My original document: https://www.yuque.com/lart/blog/lwgt38
The book continues from "how did I speed up computing time by 25.6 times"
The previous article mentioned that F-measure can further accelerate the calculation by using cumulative histogram, but E-measure has not been changed ...
Posted by aviavi on Wed, 04 May 2022 22:09:29 +0300
JDBC programming -- JDBC principle and basic programming
JDBC
WHAT IS JDBC
Java Database Connectivity: a solution for Java to access databases.JDBC is a milestone solution for Java applications to access databases. Java developers hope to access different databases in the same way to realize the Java operation interface independent of the specific database.JDBC defines a set of standard interfaces, t ...
Posted by giba on Wed, 04 May 2022 06:42:29 +0300
"List" of Python 3 "zero foundation beginners from introduction to actual combat"
List
List is the most frequently used data type in Python language. List is one of ordered and variable sequences. The data types of elements in the same list can be different.
The list is a data set enclosed by []. Different data are separated by commas. Different data types can be in the list
For example:
songs = ["Thousands of miles away ...
Posted by lutzlutz896 on Tue, 03 May 2022 10:24:43 +0300
Study Notes [Multithreading - Section 4: Simple Foundations and Security Issues of synchronized]
thread synchronization
Thread asynchronous model Each thread executes its own and has nothing to do with each other. For example, there are two threads, one is for the younger brother to eat, and the other is for the elder sister to watch TV. Neither one affects the other.
thread synchronization model In my understanding, there is some kind o ...
Posted by xzazx on Tue, 03 May 2022 07:27:00 +0300
Teach you how to use Python to send email easily
preface
Now the pace of life is speeding up, and the communication methods between people are also very different. In order to facilitate communication, e-mail has been produced. As we all know, e-mail is actually the same as sending and receiving data on the client and server. It has a function of sending and receiving. The communication prot ...
Posted by phpprog on Tue, 03 May 2022 03:22:00 +0300
Optimizing business code with FutureTask
brief introduction
FutureTask: a cancelable asynchronous calculation.
FutureTask provides the basic implementation of Future. You can use FutureTask to execute tasks asynchronously and call its get method to get the returned results.
Objectives of this chapter
Demonstrates the code of paging query users in general.
Use FutureTask to o ...
Posted by Vebut on Tue, 03 May 2022 02:51:09 +0300
NVIDIA jetson xavier agx debugging brush
lab environment
ubuntu18.4 LTS
jetson xavier agx 32GB version
jetpack4.3
install sdkmanager
Official website download link The official website download requires registration, and the download without an agent is slow, and it may not be downloaded. Other download channels are attached below
Install
sudo apt install sdkmanager_1.2.0- ...
Posted by atstein on Mon, 02 May 2022 16:30:09 +0300
Xiaodi classroom - learning notes: do you know structural design mode, decorator + agent mode? Stay and talk
Vision: "make programming no longer difficult to learn and make technology and life more interesting"
For more architecture courses, please visit xdclass net
catalogue
Episode 1 design mode of adding wings to the tiger - Introduction to decorator design mode
Episode 2 meet Lao Wang's refitting collocation - play with the desig ...
Posted by Russia on Sun, 01 May 2022 23:20:46 +0300
GoDistributed Learning Tool (16) -- Reusable package Construction in go
In this article, you will learn how to build your own package into a project in the go language and how to build a package from a remote (github) into a project.
1. Build a local package
Package is the basic unit of a reusable module and is implemented as a function in uppercase to indicate that it can be accessed by out-of-package code
The ...
Posted by shana on Sun, 01 May 2022 23:18:48 +0300
Leetcode question bank: application of dynamic programming in stone guessing game (Python language)
dynamic programming
There are a lot of tutorials and concepts on the Internet. The premise of reading this article is that you have a preliminary understanding of dynamic planning.
To sum up, dynamic planning has four steps:
Define the status.
Find the state transition equation
State compression (if possible)
Get results
Stone guessing ga ...
Posted by xeross on Sun, 01 May 2022 15:41:16 +0300