ML (machine learning) neural network, step function, sigmoid activation function
In the last article, we said that single-layer perceptron realizes simple logic circuit and multi-layer perceptron realizes XOR gate circuit. Threshold is introduced θ, Offset b. Now, according to the expression in the previous article, the reality activation function.
The expression of our previous perceptron is as follows:
y = { x1w1 ...
Posted by ashu.khetan on Fri, 11 Feb 2022 13:34:17 +0100
Guangzhou University ACM2021 Week 11 training 2021.05.16
Guangzhou University ACM2021 Week 11 training
Gossip: I haven't played weekly games for a long time (actually not). I went online for three hours in five hours. On the whole, the first five questions are very simple, but they haven't been handled well in the details, which is a test of my mentality. Finally, question a4. After reading the fift ...
Posted by dipenmistry on Fri, 11 Feb 2022 13:32:58 +0100
12 scenarios of Spring transaction failure
preface
For students engaged in java development, spring affairs must be familiar.
In some business scenarios, the data of multiple tables needs to be written simultaneously in one request. In order to ensure the atomicity of operations (success or failure at the same time) and avoid data inconsistency, we generally use spring transactions.
...
Posted by black.horizons on Fri, 11 Feb 2022 13:31:04 +0100
MySQL's most commonly used grouping aggregation function
Hello, everyone. Meet again. I'm Jun Quan.1, aggregation function - that is, group functionsOperate on a set of rows (a group of rows) and give a result to each group.Common group functions:AVG([distinct] expr)AverageCOUNT({*|[distinct] } expr)Number of statistical linesMAX([distinct] expr)Find the maximum valueMIN([distinct] expr)Find the mini ...
Posted by b0ksah on Fri, 11 Feb 2022 13:15:06 +0100
How to quickly build an intelligent face recognition system (with code)
Network security is one of the most concerned issues in modern society. It becomes extremely important to ensure that only specific people can access devices. This is one of the main reasons why our smart phones have a two-level security system. This is to ensure that our privacy is maintained and that only real owners can access their devices. ...
Posted by pibebueno on Fri, 11 Feb 2022 13:13:47 +0100
Review of binary search algorithm
Basic review
Firstly, the binary search algorithm is based on the current array as an ordered array; In fact, it is the value of finding the center point every time; If the target number is equal to the center point, it can be returned directly. If the target number is less than the middle number, it will be found on the left of the ...
Posted by edwinlcy on Fri, 11 Feb 2022 13:11:19 +0100
Dichotomy and quadratic problem of algorithm performance optimization
Performance optimization cases
1. Dichotomy search
Ordered array lookup
What is an ordered array?
If the values in an array are arranged in a certain order, we call it an ordered array
For example: array [2, 8, 15, 24, 66, 88, 100]
Now I want to complete a function to find out whether a number exists in the array. For example:
24 ...
Posted by Gulsaes on Fri, 11 Feb 2022 13:07:29 +0100
How to exit gracefully from. NET Worker Service
From the previous article, we know that the Worker Service template provides us with three core files out of the box. The Worker class inherits from the abstract base class BackgroundService, which implements the IHostedService interface. Finally, the Worker class will be registered as a managed service, and the core code of our task processing ...
Posted by Minor Threat on Fri, 11 Feb 2022 13:06:39 +0100
UCOS III learning record - time base list
Reference content: Chapter 13 of [wildfire] uCOS-III Kernel Implementation and application development Practical Guide - based on STM32.
1 data type definition and macro definition
1.1 time base list related macro definitions and global variables (os_cfg_app. H / C & OS. H)
In os_cfg_app.h, the macro defines the size of the time base ...
Posted by austar on Fri, 11 Feb 2022 13:05:36 +0100
RPC principle and RPC example analysis
catalogue
catalogue
One background
Second RPC
1. How to call other people's remote services?
How to call remote services transparently?
1.2} how to encode and decode messages?
1.3 communication
1.4 # why is there a requestID in the message?
2 how to publish your own services?
3. RPC instance analysis in Hadoop
3.1 how is the co ...
Posted by nobodyk on Fri, 11 Feb 2022 12:59:44 +0100