Data structure (4)
Its structure is an array. It converts hashcode into an array's subscript through a hash function
Features: compared with array, advantages: insert, query and dele ...
Posted by ilikemath2002 on Fri, 19 Jun 2020 06:02:34 +0200
Building neural network
The core of all neural networks in Python is the autograd package, which provides the mechanism of automatic derivation for all operations on tensors. It is a framework defined at runtime, which means that the back propagation is determined by how the code runs, and each itera ...
Posted by thepeccavi on Thu, 18 Jun 2020 07:30:39 +0200
1, Knowledge points
2.1 example 1 obtaining request parameters
2.1.2 test results
2.2 example 2 returns the string array corresponding to the request parameter according to the name of the request parameter
2.2.1 in index.jsp Write form
2.2.2 modification Login. ...
Posted by chedong on Thu, 18 Jun 2020 06:37:31 +0200
1. This paper will write a response principle in Vue next from scratch. Due to the difficulty of space and understanding, we will only implement the core api and ignore some boundary function points
The APIs to be implemented in this article include
computed2. Recently, many people asked me about th ...
Posted by sorenchr on Thu, 18 Jun 2020 06:06:20 +0200
1. Dynamic components
Two days ago, the product manager came to me with new requirements. He told me that different content should be displayed on the page according to the different permissions of users. Then I wrote out the components corresponding to different permissions, and then I used v-if to det ...
Posted by e4c5 on Thu, 18 Jun 2020 04:25:44 +0200
On the basis of the Intro to Machine Learning course, it explains how to deal with missing values, non-numeric data, and data leaks.
Lost value handling
Discard columns containing missing values directly
Replace the missing value with the average value (sklearn.impute SimpleInpuer function in)
Posted by landavia on Wed, 17 Jun 2020 05:04:27 +0200
In our daily interface development process, we may have to face some slightly more complex business logic code writing. Before executing the real business logic, we often need to carry out a series of pre verification work, which can be divided into parameter validity verification and business data verification.
Parameter validity ...
Posted by mahenderp on Wed, 17 Jun 2020 04:34:10 +0200
Analysis of Common Methods of js Array
Arrays are also object data types and consist of key-value pairs
var ary = [12,23,34]; one-dimensional array
* length: 3
1. Number as index (attribute name), index increases from 0
2. There is a length property that stores the le ...
Posted by Kurt on Wed, 17 Jun 2020 03:57:25 +0200
1. Implementation principle
The principle of the implementation of the rotation chart is to use a large box group container, which contains a small box for moving. The small box contains pictures to be rotated. The pictures are horizonta ...
Posted by chet23 on Tue, 16 Jun 2020 10:21:07 +0200
1, html introduction
1. What is HTML?
HTML:hyper text Makrup language hypertext markup language is composed of various tags, which are used to make web pages and tell browsers how to display pages
Make web pages, control the display of web pages and content
Insert picture, musi ...
Posted by gruzaw on Tue, 16 Jun 2020 10:07:59 +0200