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 ...
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
1. Global environment
2. Function (in operation) environment
3.call and apply
4. bind metho ...
Posted by jibster on Tue, 16 Jun 2020 09:36:53 +0200
In this section, we will continue to analyze a vue-property-decorator First of all, you can see an introduction of its official website:
This library fully depends on [vue-class-component](https://github.com/vuejs/vue-class-component), so please read its README before using this library. ...
Posted by jodyanne on Mon, 15 Jun 2020 07:00:54 +0200
Dcat Admin Is based on laravel-admin The second development of the background system construction tool, only a small amount of code can quickly build a functional high value background system. Built in rich back-end common components, out of the box, let developers bid farewell to miscellaneous HTML code, very friendly to back-end de ...
Posted by misty on Mon, 15 Jun 2020 06:27:10 +0200
It's a good idea to understand the java spi(service provider interface) mechanism before going into dubbo source code. Simply put, spi can help us load the interface implementation classes described in the specified file. Hmm... That's it? Isn't that easy, even though I'm a vegetable melon, I know it Class.forName Oops~Let's study it th ...
Posted by wrequed on Mon, 15 Jun 2020 03:44:49 +0200
Implement delayed loading
Delay loading using allocation
Using Collection to delay loading
It is to load data when it is needed, and not to load data when it is not needed. Lazy loading is also called lazy loading
Advantages: query from single table first, ...
Posted by theDog on Sun, 14 Jun 2020 11:24:43 +0200