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postsofbabel · 1 year

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#posts of babel

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calendrier-bancaire · 1 year

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Calendrier scolaire CSDN

Calendrier scolaire CSDN 2023 2024 #calendrier #scolaire #csdn #navigateurs

Afin de préparer l’année scolaire ou peut-être la reprise ou les vacances, vous cherchez à trouver des informations sur le calendrier scolaire CSDN. Vous êtes sur la bonne page. Si votre enfant est en primaire ou en secondaire, vous retrouverez l’ensemble des dates pour les journées pédagogiques mais aussi les congés au Centre de services scolaire des Navigateurs. Cela concerne tous les enfants…

View On WordPress

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skyalvin111 · 1 year

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thereactcompany · 1 year

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Best 11 React Efficiency Optimization Tactics in 2023

Product homeowners and builders are typically fearful of problems with efficiency when running with React Js-based software. This skepticism has avoided other folks from benefiting from React framework’s unbelievable benefits. As soon as the reason why React programs are sluggish to load and the techniques to give a boost to React potency, then it is possible for you to harvest the various benefits of this frontend framework this is trendy. This weblog outlines the highest 11 React software efficiency optimization methods to triumph over the chance and risks. If you want to discover additional extra about React JS, chances are you’ll talk it over with us at The React Company.

Advent

Time is a treasured useful resource that nobody would wish to lose In case your software calls for over the top endurance to stay their consideration. React is a very talked-about framework this is believed through builders to give you the velocity of rendering. Because of this why primary firms reminiscent of LinkedIn, DropBox, CSDN, Baidu, and so forth. make the most of React for his or her web-based programs.

However, React even renders many useless parts that deal with efficiency problems. Builders may also be savvy and aware of React potency through having a look at some key measures and inferring those.

11 Confirmed Tactics to Make stronger & Spice up React Efficiency

There are a variety of good React efficiency optimization tactics that we advise to keep away from dear DOM operations. Be told extra about them.

1. Windowing or Checklist Virtualization in React Packages

Many React programs with or appearing long lists most often have efficiency issues. Previous to loading the appliance, all the listing is gifted within the DOM making a UI slowdown and a great deal impacting the React.js software’s efficiency.

One manner of overcoming the bottleneck is thru Checklist Virtualization or Windowing. As an alternative of rendering all the listing of parts at the display, we allow handiest an enumeration of the parts to be displayed at the DOM so long as they’re visual.

The 2 libraries that improve windowing are reacted window and react virtualized and you’ll be able to allow rendering just a tiny portion of the huge listing at the display within the app. The efficiency of your app will give a boost to.

2. Key Coordination for Checklist Rendering

While you paintings the use of lists when running in React you’ll be able to assign vital attributes to parts that may lend a hand render the approaching parts.

For dynamic lists, when a developer isn’t the use of the proper parts keys to listing parts, the listing turns into useful to the consumer making a efficiency factor for the React software. On this case, the list access this is added to the listing will recommend that the former listing access isn’t essential.

It is very important to assign a novel key worth to your listing aspect to triumph over this drawback. Due to this fact, you will have to you’ll be able to use Key= in the ones lists which can be dynamic to give a boost to the efficiency of your React app. Here is a transient abstract of How do you utilize Push Means in React Hook that you do not want to pass over out.

3. Lazy loading of pictures in React

In case your React software is loaded with pictures, there is a excellent likelihood that your React software’s efficiency will lower. It’s because the DOM renders all pictures in a single move earlier than showing the consumer’s display. Due to this fact, we suggest applying Lazy loading pictures. This waits till the following flip of the picture is displayed at the display of the consumer after which renders handiest that particular picture.

Lazy loading pictures avoids the introduction of redundant DOM nodes, very similar to the best way we mentioned windowing. The preferred libraries used for lazy loading to spice up React efficiency are react-lazyload and react-lazy-load-image-component.

4. Practical Parts & Part Interplay

Among the best manner of bettering potency in React programs is thru the usage of purposeful parts. Even if it will sound cliche, alternatively, it is the most elementary and well-tested way to create tough and efficient React programs all of a sudden.

Our React professionals have some ideas on the use of parts.

Tech Recommendation: Stay it Quick!

Our a professional React builders suggest making your parts smaller as a result of smaller parts are more effective to check, learn and take care of in addition to reuse.

Positive benefits of creating use of React parts reminiscent of React Devtools (extension) come with

Require much less code,

Easy to understand,

Parts are stateless.

It’s simple to check.

The power to extract smaller parts and

Intractability

5. Perceive The way to Care for ‘this’

Practical parts do not have this binding, however it’s conceivable to make use of them as ceaselessly as you’ll be able to. Then again, in case you are using ES6 binding React can not robotically bind the purposes of parts. You’ll, alternatively, manually create the binding. Listed here are a couple of techniques to enroll in your portions and purposes:

Bind in render

Use arrows in rendering

Binding within the constructor

Bind Arrow serve as within the magnificence belongings. [Not in the official ECMAscript[Not in official ECMAScript

6. Use a Function in ‘SetState’

We suggest using a method rather than an object within setting state. This is due to the fact that the state of things doesn’t change immediately, as is the case with React documentation. Therefore, instead:

this.setState({correctData: !this.state.correctData});

The above function will take the state it was in prior to as its primary argument and the props, at the time the update is made, as the second argument.

this.setState((prevState, props) => { return {correctData: !prevState.correctData}); }7. Utilize Prop-Types

Prop-types is a tool for the type-checking of props. This code snippet demonstrates how you can import this function of the Prop-types library

import PropTypes from ‘prop-types’; class Welcome extends Component { render() { return <h1>Hello, {this.props.name}</h1>; } } Welcome.propTypes = { name: PropTypes.string.isRequired }

8. Trim Javascript Bundles

If you want to cut out redundant code, you must reduce all of the Javascript packages. If you remove duplicates and code that is not needed The chance of your React application’s performance increases. You need to look over and decide on the bundled code.

9. Server-Side Rendering (SSR)

Use SSR be aware of it and make sure you really need SEO to run your app. SSR consumes a massive burden, so if you stay clear of using it when it is not needed and you’ll be blessed.

10. React Redux Optimization Tips

We will present two methods to get around this issue using React Redux applications. The first is by using the RESELECT library when components with higher order within your React application are allocated to rendering functions. Yahoo has greatly profited from making use of this library.

Another way to improve React Redux app performance is through the use of Immutable.js. An immutable list’s performance is greater (up to four times) than the a one-way mutable list. If you are using variables in your Redux application it’s because it is a fact that the Redux state tree uses large amounts of memory copying data, which can affect the performance of the application.

A known flaw that is a problem for Yahoo is a prime instance to take into consideration when React applications are developed using Redux. The combination can be deadly and allows complex scenarios to be structured. However, when you utilize Redux the React application redraws and can slow down performance.

The use of an immutable structure won’t modify the data structure and instead create an entirely new version of the current data structure each time it is requested. This method improves React performance by a significant amount.

11. Improve React App Performance Using React Memo [Memoization]

We can give a elementary define of find out how to make the most of React memo to optimize React software efficiency optimization.

Be aware: React. the memo isn’t similar to useMemo. Many of us get puzzled between the 2 because of their names.[Note: React. the memo is not the same thing as useMe. If you wish to get the information on Best 11 React Efficiency Optimization Tactics in 2023, do visit us at The React Company.

What is React. memo?

We’ve all heard about the weight of rendering methods in react applications. Aren’t we? We’re aware of what happens when you render a component with no major changes. Therefore, think about a scenario in which you are rendering a class component in the input props that are identical. Does this make sense? Obviously, it’s not! What’s the reason you describe a “heavy render” method when the input props remain constant? In this particular case, you should use PureComponent or shouldComponentUpdate( ). It’s the situation for the class component. But what is the case with the function (stateless ) component? There’s an answer as well: React. Memo.

React. memo: High Order Component.

If your functional component generates exactly the same way because it uses similar input components then you could wrap the result in React. memo to improve performance. It means React will check the previous render with the present one and, if there are no differences occur it will stop rendering the component. This improves the efficiency of the application. It is possible to incorporate your functional component into React. memo as illustrated below:

const MyExampleOfMemo = React.memo(function MyComponent(props) { /* render using props */ });

If you do not use a second argument react will perform the comparison with its default behavior, which is a superficial comparison of objects contained in the object of props. If you choose to use another argument you have control over the process of comparison (i.e. you can create your own custom comparison function)

function MyExampleComponent(props) { /* render using props */ } function equalOrNot(prevProps, nextProps) { /* It will return true if nextProps to render would return the same result as prevProps to render, otherwise return false */ } export default React.memo(MyExampleComponent, equalOrNot);

Be aware when making use of React. memo. Because it could cause bugs.

Let’s look at a simple illustration to make the necessity of React. Memo evident.

Let’s build a simple application that makes use of the setState( ) each second. It calls rendering every minute. I’m sure this isn’t possible, but it’s intended to clarify the reason we require React. memo.

class App extends Component { cities = ["Mumbai", "Banglore", "Delhi"]; state = { town: "Nameless" }; componentDidMount() { setInterval(() => { const town = this.generateCity(); this.setState({ town }); }, 1000); } generateCity = () => this.towns[Math.floor(Math.random() * this.cities.length)]; render() { go back < View town="Kolkata" />; } }

We’re in a position to look that we name an operation referred to as setInterval inside the componentDidMount(). This if truth be told units the town’s title from the listing of towns and for that, we use some other serve as named generativity ( ).

Something to bear in mind is that settingState( ) is known as each and every 2nd. The result’s that the case, the aspect might be rendered each and every 2nd. In order that our View aspect can even render irrespective of the town this is hard-coded. Can or not it’s achieved? No, in fact now not.

const View = ({ town }) => `Town title :: ${town}`;

It is not logical. What’s the explanation why we’d re-render a component (right here the View aspect) within the match that the props keep precisely the similar?

We are now aware of memoization in line with the above discussed content material. We will be able to make the most of React.memo to restrict the rendering of the aspect within the match that the props’ values do not trade.

import { memo } from 'React';const View = memo(({ town }) => `Town title :: ${town}`);

It’s obtrusive that the View/> aspect can handiest be rendered as soon as since the prop’s worth town is not modified.

This used to be the case the place the prop used to be demanding coded. Let’s have a look after we make a decision to switch the price that used to be hardcoded with a state worth.

Within the serve as generativity ( ) the town’s worth is chosen randomly from an town’s listing.

Thus, when that very same quantity is assigned to the town the View/> aspect may not render since the town props, which is able to due to this fact have the an identical worth.

Memoization!!

Beware of misunderstanding between React. memo and useMemo.

Do not depend simply in line with their names. They each and every have their very own goal.

It’s conceivable to confirm they each React. memo and UseMemo use the theory of Memoization however they nonetheless have their very own specialty.

React. memo complements the efficiency of reacting apps through controlling the rendering of various parts. You be capable of regulate a complete aspect’s rendering choices: whether or not or now not.

Then again, useMemo does not supply such large-scale regulate. It is designed for extra normal functions and is designed to go back memoized values. UseMemo is a hook and offers normal laws for utilization. The primary level is that React. memo optimizes the appliance through fending off renders that do not modify the prop. Then again, be wary whilst you optimize the efficiency as it could reason insects.

Conclusion

After you might have received an informed figuring out of React issues of efficiency and React strategies for bettering efficiency We are hoping you take into accout of and enforce the React software optimization methods we have shared inside this newsletter. Make stronger your current React software to new heights of its possible through expanding its efficiency through the use of the help of the highest Reactjs Building Corporate, which provides knowledgeable recommendation and best possible practices to supply.

Often Requested Questions (FAQs)What’s the explanation why a React software slows down in efficiency?

The efficiency of a React software is sluggish as a result of many parts are time and again rendered making it slower and slowing it down. Then again, you’ll be able to accelerate it through the use of those React efficiency optimization pointers and methods we have shared.

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novus-logics · 2 years

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7 Proven React js development Methods to Increase & Optimize App Performance

No user will want to waste their time on a web application that requires excessive patience from them. Time is a valuable resource. React is a well-liked framework that programmers trust for fast rendering. React js development is used by well-known companies like LinkedIn, DropBox, CSDN, Baidu, and others because of this.

During React js development Service, developers can intelligently and actively ensure React performance optimisation approaches by taking a few key measures into consideration and indicating them. React, however, even renders many irrelevant components resolving such speed concerns.

To get around the expensive DOM operations, there are excellent React speed optimisation approaches that we suggest. Discover how.

1. Virtualizing lists or windows in React applications

The performance of many React applications that use or display lengthy lists is frequently problematic. The complete list will be rendered in the DOM prior to loading the app, significantly slowing down the React.js app's performance and generating UI latency.

List Virtualization or Windowing is one method for getting around this problem. Here, we only permit a limited list of objects to be rendered on the DOM as much is visible, as opposed to presenting the entire long list of components on the app screen.

2. Coordinating the keys for list rendering

While working with lists in react js Services, you can give an element important property that will aid in rendering the following elements.

If the developer incorrectly assigns component keys to list elements for dynamic lists, it becomes useful for the user and slows down the speed of the React app. Here, it is unnecessary because the new list entry will immediately recommend the prior list entry.

To address this bottleneck, you must give each list component a distinct key value. Use Key={ } to improve the efficiency of your dynamic lists in a React project.

3. Slow image loading in React

There is a good probability that your React app's performance will suffer if it has a lot of photos. This occurs because the DOM renders each image individually before presenting the user interface. Therefore, we advise employing lazy loading images, which only render that specific image after waiting until its turn has appeared on the user's screen.

Similar to how windowing prevents extra DOM nodes from being created, lazy loading of images does the same. React-lazyload and react-lazy-load-image-component are the two widely used libraries for lazy loading to improve React speed.

4. Interaction of Components and Functional Components

By leveraging functional components, React.js applications can be performed more efficiently. The easiest and tried-and-true method for quickly creating effective and performant React apps, despite its cliched sound.

React components, such as the React Devtools (extension), provide the following benefits:

· Less code is needed

· Simple to comprehend

· Components are stateless

· Easy to test

· Flexibility to extract smaller components

· Interactivity

5. Recognize how to deal with "this" binding

While 'this' binding is not necessary for functional components, you may want to use them whenever possible. React will not automatically bind your functions within components if you are using ES6 binding, though. You can still manually achieve the binding, though. You can bind your components and functions in the following ways:

· Rendering with binding

· Embrace the arrow function in rendering

· Binding to the function Object() { [native code] }

· Attach the class's attribute to the arrow function.

6. Cut JavaScript Bundles

Learn how to trim your JavaScript packages to get rid of redundant code. Your React application's performance has a greater chance of succeeding if you eliminate redundancies and pointless code. You need to evaluate and decide on the bundled code.

7. Client-Side Rendering (SSR)

Consider using SSR deliberately and determining whether your application genuinely requires SEO. If you can avoid utilising SSR when it's not necessary, you'll be in luck. SSR consumes a tremendous amount of load.

Conclusion

We hope you will follow and put into practise the React app performance optimisation advice that we have offered in this blog now that you have a clear understanding of React performance difficulties and React performance techniques. Improve the efficiency of your current React application by working with the top Reactjs development company like Novus Logics, which can offer experienced advice and best practises. ReactJS developers at Novus Logics implement best practices to deliver robust results for your Reactjs app development.

FAQs:

How much does it cost to hire a ReactJS Developer?

Hiring a ReactJS developer can cost between $20 to $38 per hour. The average hire rate of ReactJs deveoper depends on the size and complexity of the project. Hiring an expert develop from a reputed ReactJS development company is affordable when compared to recruiting an in-house developer. Recruiting an in-house developer can incur additional costs such as infrastructure, training and HR compliances.

What is ReactJS used for?

Facebook created the open-source React.js framework and library for JavaScript. As comparison to using pure JavaScript, it is used to create interactive user interfaces and web applications quickly and effectively.

Is ReactJS coding?

You don't need to be a skilled programmer to start with React, despite the fact that it has its own distinct ecosystem and development methodologies. Your general understanding of web development best practises will serve you well. Your ability to learn React will increase as your web development experience grows.

Which company is best for ReactJS?

There are many companies that offers robust Reactjs development services. However, you should consider the company that understands your project requirements and help you deliver quality projects within your determined budget.

#React js development Service in India #hire react js developer #reactjs

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canseidessenomesblog · 2 years

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Nós somos de quem nos escreve, eu li um dia.

De quem nos entende.

De quem depois pode nos explicar também.

Somos de quem nos acaricia, de quem nos trata com doçura, de quem acha adorável cada defeito, cada marca, cada cicatriz.

Somos sem dúvida de quem nos ama e nos protege, mesmo com feridas, mesmo com arranhões, com medos, com medos.

Não somos de quem nos cura, somos de quem já curado estão aí, para nós acima de tudo.

Somos de quem nos vai descobrindo dia a dia, cada segredo, cada momento, cada coisa do passado, independente do que aconteceu, independente de qualquer coisa.

Somos de quem não compreende, de quem podemos contar-lhes tudo sem pena, sem vergonha, sem reservas.

Somos de quem nos vê como se fôssemos a jóia mais preciosa, a mais bonita, a melhor.

De quem nos toma com firmeza e delicadeza, de quem nos cuida acima de tudo e de todos, e quem sempre, em todos os momentos nos defenderá.

Somos de quem nos coloca em prioridades, de quem nos dá o seu tempo, de quem nos dá liberdade também.

Somos de quem nos beija bonito, de quem nos beija selvagem, de quem sempre nos beija.

Somos de quem ama tudo o nosso ser, nossa essência, quem não quer mudar nem um centímetro, quem sabe todos os nossos erros e tropeços e ainda quer ficar.

Somos de quem ficou ao nosso lado apesar dos momentos ruins, apesar dos presságios, das lágrimas ou raiva, das caras de bunda, dos dias sem remédio; somos definitivamente de quem ainda está aqui, ao nosso lado, querendo-nos em tudo. mento, querendo depois do tempo continuar conhecendo mais, acreditando que nos conhece sempre mas ir descobrindo que dentro de nós ainda há mistérios que quer ir decifrando.

Somos de quem afinal ainda acredita em nós, e que nunca nos mudaria ou limitaria em algo, pelo contrário, crescerá ao nosso lado...

PS: Fisicamente você se encaixa com quem for, mas a alma não sorri, nem ama, nem vibra com qualquer um.

-csdn

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baidudownloader · 1 year

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youtube

#baidudownloader.com #csdn #csdn.net #Youtube

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herosone111 · 2 years

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NeurIPS 2022 | 仅用256KB就实现单片机上的神经网络训练

On-Device Training Under 256KB Memory [NeurIPS'22]

其实我也有个想法，不过就是2K内存做不到而已，假如扩充内存，好像有点违背我的初衷。

中国政府搞的什么东数西算之类思路是错的，目前的显卡的设计思路有一定问题……

猫猫启动！

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kaobei-engineer · 2 years

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#純靠北工程師6q0

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處長對於工作就是工作這件事似乎很有自己的想法，由於公司的資訊相��東西都歸他管，所以上班有一大半網站都會被防火牆擋下來，還會很貼心告訴你「上班請勿檢視非業務相關網站」，但沒想到瘋起來連oracle、github、stackoverflow的部分連結都封，像是比較小的程式解法網站也封，個人程式教學網站也封，另外大陸的CSDN也全封，搞的開發程式遇到問題都只能開頁存庫檔，不說我在上班我以為我在玩刮刮樂，順帶一提，上班也不能戴耳機、聽音樂，辦公室死氣沉沉

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💖 純靠北工程師官方 Discord 歡迎在這找到你的同溫層！

👉 https://discord.gg/tPhnrs2

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💖 全平台留言、文章詳細內容

👉 https://init.engineer/cards/show/8712

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mainsboulder · 2 years

Text

Gitbook editor windows

#Gitbook editor windows how to

#Gitbook editor windows registration

#Gitbook editor windows software

So, if you, like me, are not satisfied with the traditional way of writing and are looking for a pleasant way of writing, then it's time to try GitBook! Simply put, the benefits of GitBook + Markdown + Git are: This is precisely the strength of GitBook + Markdown + Git.

#Gitbook editor windows software

On the contrary, Microsoft's office software is excellent and has withstood the test of time, but because of its rich functions, it is slightly bloated (the law of two to eight: 80% of the time we only use 20% of the functions), and because of it There are shortcomings such as saving in binary format, software incompatibility, format incompatibility, difficulty in version control, difficulty in real-time sharing and preview, and difficulty in multi-person collaboration. This is not to say that they are obsolete, nor that GitBook can replace them. Usually, the office software we first learn and use is Word, Excel and PowerPoint. Therefore, I recommend and the collocation I currently use is It seems that the website is being upgraded recently.

#Gitbook editor windows registration

Even if the registration is successful, you may not be able to log in. But unfortunately, the registration and login of GitBook Editor need to go over the wall. It also supports synchronization of books to the website, so that we can easily edit and manage books. It integrates functions such as GitBook, Git, and Markdown. In fact, GitBook Editor is a good choice for novices. We can find many Markdown editors on the market, such as Typora, MacDown, Bear, MarkdownPad, MarkdownX, JetBrains's IDE (plug-in installation required), Atom, Jianshu, CSDN and GitBook's own GitBook Editor, etc.īut GitBook is closely related to Markdown and Git, because only by combining them can their power be used to the extreme! Therefore, we usually choose the appropriate Markdown editing tool to get a flying writing experience use GitBook to manage documents, preview and make e-books at the same time, manage the changes of book content through Git and host them to the cloud (such as GitHub, GitLab), Code Cloud, or Git server built by yourself) to achieve multi-person collaboration. Therefore, GitBook is not a Markdown editing tool, nor is it a Git version management tool. So I prefer to define GitBook as a document format conversion tool. In fact, GitBook is a Node.js-based command-line tool that supports Markdown and AsciiDoc syntax formats, and can output e-books in HTML, PDF, eBook and other formats. Actually otherwise, the relationship between GitBook and Git, like Lei Fengta and Lei Feng, has nothing to do! And when you get to know it, you might think that it is a tool for building e-books using Git. So before I discovered GitBook, I had actually imagined its use cases countless times.Īt first glance at the name of GitBook, you might think it is a book about Git. I think Git is not only a tool for programmers to manage code, but its distributed collaboration method is also suitable for many occasions, one of which is writing (this will be a great tool for social change!). Undoubtedly, Git is currently the most advanced distributed version control system in the world.

#Gitbook editor windows how to

This article introduces GitBook from the four dimensions of " what ", " why ", " how to do ", and " good or bad ", and will take you out of the darkness to get this wonderful way of writing.īefore I knew GitBook, I was already using Git.

#Gitbook editor windows

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hoststrust · 2 years

Text

Turbocollage code

Turbocollage code how to#

Definition of various parameters of audio.

Turbocollage code how to#

How to select an entire column in visual block mode- How do you select a whole column in visual block mode?.Net pet sales system VS development of SQL Server database web structure c programming computer web page source code project Using the seasonal map, you can compare the data differences of the same month in different years, or the data differences of the same (year / month / week, etc.) time series on R language ggplot2 visualization: visualize the seasonal map of time series.Seaborn uses the boxplot function to visualize the box chart (use the color palette to customize the color of the box chart, sns.set_palette global settings palette parameters, customize the color of the global palette).What is the relationship between principal component analysis and exploratory factor analysis, PCA and EFA?.Matplotlib visualizes the line diagram connecting pairs of data points, displaying only lines but not data points (paired line plot with Matplotlib but without points).CSDN paid column writing perception and growth path, and on the creator synergy of learning member model.Swagger enterprise mainstream interface management and testing tools.Detailed explanation of OpenCV function usage (key chapter 1) 41 ~ 50, including code examples, which can be run directly.Opencv function details 51 ~ 60, including code examples, which can be run directly.Opencv function detailed explanation final 61 ~ 67, including code examples, which can be run directly.

#Turbocollage code

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qianqiuxue · 5 years

Photo

2019北京AIProCon开发者大会——计算机视觉技术专题

计算机视觉技术领域的创新已达瓶颈？该领域有哪些方向将取得突破，还有哪些前景应用尚待挖掘？本论坛将聚焦于计算机视觉技术最新突破和应用实践，并就当下遇到的技术挑战探索出可能的解决方案。

互联网视频基础技术探索及其应用出品人: 王华彦 | 快手硅谷实验室负责人王华彦，快手硅谷实验室负责人，斯坦福大学计算机科学博士，师从Daphne Koller教授研究计算机视觉。曾就读于斯坦福大学人工智能实验室，为复杂化的概率图模型开发了高效的推理算法，并将其应用于计算机视觉研究。王博士的研究曾登上行业期刊CACM首页，并在多个顶级会议如CVPR、ICML、ECCV、IJCV、AAAI上发表。王华彦本科和硕士阶段就读于北京大学，师从査红彬教授，也曾参与香港科技大学的杨强教授的科研活动。加入快手前，他曾担任Vicarious AI的高级研究员，以极其高效的数据方式，开发高度结构化的模型，解决CAPTCHA和Robotics等现实问题。他在人工智能领域的工作曾发表于美国的《科学》杂志。王博士现在领导快手位于硅谷的Y-tech实验室，在开发高效的人工智能解决方案的同时，也将更多的尖端技术引入快手的移动平台。

文石磊 | 百度视觉技术部主任架构师，视频基础技术团队负责人互联网视频基础技术探索及其应用目前互联网视频数据日益增多，用户观看长视频、短视频、小视频的时长也迅速增长，在实际应用中需要解决两类重要问题，视频语义理解和视频编辑。视频语义理解从多维度解析视频内容，理解视频语义，自动分类打标签，极大节省人工审核效率，节约成本，同时实现精准用户推荐，提升体验效果。其主要技术难点在基于海量数据构建高性能视频分类模型。视频编辑主要解决手机端美颜、滤镜、属性编辑、AR特效、超分辨率等问题。随着GAN的快速发展，基于GAN的特效编辑几乎达到以假乱真的地步，逐渐成为视频编辑中研究的热点。本次演讲将围绕高性能大规模视频分类技术与生成式对抗网络技术（GAN），主要介绍百度视觉技术部在视频语义理解和视频编辑两个问题上的探索与应用成果。

专家介绍：文石磊，百度视觉技术部主任架构师，视频基础技术团队负责人，两次获得百度最高奖。带领团队获得CVPR2019 5项比赛冠军，涵盖目标检测、智慧城市、视频理解、超分辨率等领域，其中连续三年获得视频理解比赛ActivityNet冠军，19年发表AAAI/CVPR/ICCV顶会论文八篇，并将相关技术成功应用于核心产品，在百度云/AI开放平台累计输出约50项能力。

石建萍 | 商汤科技研究总监视觉感知驱动的量产自动驾驶计算视觉及其在图像视频中的识别理解能力在近些年的突飞猛进，极大提升了量产自动驾驶对于低成本高感知能力方案的可靠度。在本报告中，我们会综述团队在计算视觉领悟的整体布局及重点突破。接下来会以优化自动驾驶系统能力，提升量产可靠性为整体目标，介绍系统级的优化实践。最后，我们将展望自动驾驶方向未来的研究热点以及商汤在自动驾驶方面的整体布局。

专家介绍：石建萍博士为商汤科技研究总监。她领导了商汤科技自动驾驶研发团队，推动商汤科技与本田的长期战略合作。同时，她也负责多条产品线的算法交付，包括娱乐互联网，手机，遥感等。石建萍本科毕业于浙江大学计算机科学与技术系，同时隶属于竺可桢荣誉学院，2015年博士毕业于香港中文大学计算机科学与工程系。她是深度学习和计算机视觉领域的专家。她领导了商汤科技的团队赢得多项国际竞赛冠军，包括ImageNet Scene Parsing Challenge 2016, COCO Instance Segmentation Challenge 2017, 2018以及众多CVPR, ECCV workshop竞赛等。建萍发表过超过40篇顶级会议，期刊论文，论文发表在SIGGRAPH Asia, CVPR, ICCV, ECCV, NIPS, MM, TPAMI,TIP等。她的论文在Google Scholar上引用率超过3400。在博士期间，她获得过微软学者，HK-ACM最佳年轻学者，香港博士生政府津贴等众多荣誉奖项。 2018年，凭借在计算机视觉原创技术的卓越创新成就，石建萍还入选了《麻省理工科技评论》 “35岁以下科技创新35人”(35 Innovators Under 35)中国榜单。

王乃岩 | 图森未来合伙人&首席科学家图森未来无人驾驶技术实践分享【演讲大纲】1、图森未来无人驾驶的发展历程，以及最新的技术进展；2、计算机视觉技术在无人驾驶卡车领域中的实践和应用

专家介绍：王乃岩，图森未来合伙人&首席科学家。香港科技大学博士，主要负责带领中国国内算法团队进行自动驾驶卡车技术研发。曾多次在国际数据挖掘和计算机视觉比赛中名列前茅，发表论文引用次数已超过4000余次，是将深度学习应用于目标追踪领域全球第一人。曾入选2014Google PhD Fellow 计划，也是 MXNet 核心开发者。

张祥雨 | 旷视研究院主任研究员、基础模型组负责人高效轻量级深度模型的研究与实践深度基础模型在现代深度视觉系统中居于核心地位。在实际应用中，受应用场景、目标任务、硬件平台等的不同，经常会对模型的执行速度、存储大小、运算功耗等进行限制。因此，如何针对各种不同的情景设计“又好又快”的模型，成为深度学习系统实用化的重要课题。尤其是近年来，AutoML技术的发展给轻量级模型的研发带来了新的思路，基于AutoML/NAS技术的深度视觉模型在多个维度上不断刷新性能上限，展现出了良好的研究与应用前景。本次演讲主要围绕实用模型设计的两个常用技术：轻量级模型设计和模型裁剪，重点介绍旷视研究院在高效视觉模型领域的科研成果和实践经验。分享内容包括多种轻量级高性能模型，以及基于AutoML的自动化模型设计、模型裁剪的最新研究成果。

专家介绍：张祥雨，现任旷视研究院主任研究员、基础模型组负责人。2017年博士毕业于西安交通大学。期间参加西交大-微软亚洲研究院联合培养博士生项目，师从孙剑博士和何恺明博士。目前团队研究方向包括高性能卷积网络设计、AutoML与自动化神经网络架构搜索、深度模型的裁剪与加速等。已在CVPR/ICCV/ECCV/NIPS/TPAMI等顶级会议/期刊上发表论文二十余篇，获CVPR 2016最佳论文奖，Google Scholar引用数38000+。多次获得顶级视觉竞赛如ImageNet 2015、COCO 2015/2017/2018冠军。代表作包括ResNet、ShuffleNet v1/v2等，均在业界得到广泛应用。

王晶 |华为云OCR人工智能高级算法工程师文字识别服务的技术实践、底层框架及应用场景近年来，随着智能设备的普及和大数据技术的高速发展，自动化办公和智能数据分析成为可能并逐渐普及，人们要求计算机“读懂并理解文字”。本活动将会以介绍华为云文字识别服务的识别精度高、鲁棒性好、支持多类单据识别、服务稳定高效等特点，以及实现这些特点所应用的技术内容及框架、实践的过程与经验。初次之外，还会介绍一体化模型、任意角度纠正技术、端云结合等特色技术的实现方式及底层架构。除了技术内容、架构设计的介绍，还会用一部分篇幅介绍目前已经成熟的应用场景，例如全球快递物流、财务、医疗、保险、金融、政务、交通、汽车等具有跨系统信息整合需求的业务领域，以帮助听众更好地了解这一领域的技术与实践的结合，通过华为的项目经历，分享这一技术在实践过程中的真实经验、踩过的坑和解决方案等。

专家介绍：王晶，华为云OCR人工智能高级算法工程师，拥有多年的算法经验，分别获得新加坡南洋理工大学和中国科学技术大学数学与应用数学博士和学士学位。负责文字识别核心算法，提交多个基于深度学习的文字识别专利和论文，组队ICDAR SROIE票据识别大赛并以96.43%的高精度夺得世界第一，华为云文字识别服务获得2019数博会“新产品奖”。熟悉云计算、人工智能、密码和计算机网络安全。从事过华为云PaaS平台安全设计和测试工作。Covert Redirect（隐蔽重定向）漏洞发现者，曾提交十几个CVE安全漏洞并被微软、苹果、阿里巴巴等十几家公司列名安全感谢榜，多个发现被包括人民网、凤凰网、CNET在内的众多国内外媒体报道。

杨民光 | Product manager in Google Research Perception Research On-Device, Real-Time multi-modal (video, audio) applications with MediaPipe Video, audio (multimodal) mobile applications that utilize machine learning models (eg Tiktok 抖音, Shazam) are becoming more common. However, creating these multimodal ML applications are challenging as developers need to deal with real time synchronization of time series data during model inference and doing it cross platform (Android & iOS) on mobile and edge devices.

专家介绍： Ming Guang is a Product manager in Google Research Perception Research leading open source efforts in computer vision. In Google, he was previously product manager in Google Search and product lead for mobile video ad formats. Before Google, Ming was cofounder Socialwok, an enterprise collaboration service for Google Apps (Finalist of the Techcrunch Disrupt 2011) and Voiceroute, a startup focused on open source VOIP telephony services for small medium enterprises.

专题链接

https://bss.csdn.net/m/topic/ai_procon/topic_detail?mid=2051&id=9374

#AIProCon #csdn #开发者大会 #端上视觉技术 #互联网视频 #量产自动驾驶 #无人驾驶技术 #轻量级深度模型 #文字识别技术实践 #MediaPipe

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lifegrey · 5 years

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AI ProCon圆满落幕——计算机视觉技术专题报告内容介绍

2019 年 9 月 7 日，由新一代人工智能产业技术创新战略联盟（AITISA）指导，鹏城实验室、北京智源人工智能研究院支持，专业中文IT技术社区 CSDN 主办的 2019 中国 AI 开发者大会（AI ProCon 2019）迎来了重头戏，机器学习、自然语言处理、计算机视觉、AI+DevOps 和AI+小程序五大技术专场先后开讲，近 40 位行业专家和技术专家带来了精彩分享。如下为计算机视觉方向的专题介绍。

快手硅谷实验室负责人王华彦以《端上视觉技术的极致效率及其短视频应用实践》为题做了演讲。

王华彦表示，端上视觉短视频的应用场景带来的技术挑战有三方面：

· 第一是不可控的复杂场景和环境；

· 第二是极为有限的移动设备计算资源；

· 第三是由于所有应用都是时效性很强的。

为了解决这些挑战，快手的解决方案和研究方向有四个要素：

· 第一是运用高度结构化的模型和充分利用先验知识；

· 第二是面对计算资源的紧缺，需要充分发掘各种冗余来提高算法的推理效率；

· 第三是用高度结构化的信息表示提高学习算法利用数据的效率;

· 第四是快速开发和部署的需要。

在他看来，如果希望像人一样高效地从很少的数据或者虚拟的数据中学习，就需要有分解的本事，把视觉信息分解为形状轮廓信息和颜色纹理的信息，才能在不同样本中有效建立联系，从而提高学习的效率。

百度视觉技术部主任架构师、视频基础技术团队技术负责人文石磊为现场观众介绍了互联网视频基础技术探索和应用。基于百度丰富的视频应用场景，什么样的技术来支撑应用？文石磊解释，与互联网视频相关的技术分为视频理解、视频编辑、算力优化。视频理解分三个内容，第一是视频分类/检测/摘要/垂类，第二是做多模态融合和知识图谱，我们看到视频内容不仅有图像还有语音、标题，这些不同的信息资源该怎么融合，基于视频得到的标签如何结合构建好的知识图谱都是热门内容。

商汤科技研究总监石建萍则以《视觉感知驱动的量产自动驾驶》为题主要介绍了商汤在智能驾驶上的主要方向。第一是非常重要的ADAS驾驶辅助系统的量产方向，以模块级别装到汽车上，要达到精确识别检测，预警及时且准确率高，车规级标准，灵活易部署；第二是做自动驾驶的研发，以计算机视觉为主、多传感器融合的自动驾驶解决方案。第三是基础技术，包括大数据、自研深度学习系统、自研FPGA计算平台。

图森未来合伙人&首席科学家王乃岩分享了图森未来无人驾驶技术实践。

为什么图森未来会选择卡车货运的场景？王乃岩解释称，一个最重要的原因是商业场景是成立的，对于出租车来说场景很复杂，至少是一个城市的级别，对于干线运输来说需求非常简单，在一条道路上从A点到B点不会有多样化的需求，简化的需求恰恰是AI落地非常重要的因素，卡车货运会是自动驾驶行业尤其高级别自动驾驶行业中最希望率先落地的场景。

图森未来把无人车系统分为四部分，感知、定位、路径规划、车辆控制。感知过程中，要做的是融合不同传感器完成感知车辆周围环境和状态，为后面的决策规划输出合适表示。在定位阶段，不同于拿出手机做导航的定位，他们在无人车做的定位是遥感车辆相对道路的基准。再往下的模块是路径规划，首先是融合前面两个模块输出做出下一步行驶决策，然后根据这样的决策会生出一条车辆可知性的最优轨迹。最后一部分是车辆控制，执行规划计划的轨迹，输出车辆控制量。

旷视研究院主任研究员、基础模型组负责人张祥雨分享了高效轻量级深度模型的研究与实践。

他提到了六点高效模型设计的基本思路，旷视会使用这六种甚至更多的方案综合进行模型的设计。

在他看来，目前在轻量级模型设计这个领域基于模型搜索的方法已经成为了目前的主流，也是最重要的研究方向。在实践中会发现模型搜索对设备适配尤其是寻找对于具体设备上运行时间最快、功耗最少的模型，相对于人工有非常大的优势，但是也有很多问题，搜索空间现在还是依靠人工设计，搜索空间的设计非常依赖经验，并且没有好的指导原则，这是未来的研究方向和难点。

华为云OCR人工智能高级算法工程师王晶讲述了文字识别服务的技术实践、底层框架及应用场景。

他认为，不只是OCR产品，而是所有人工智能产品或其他产品都需要走这样的路。第一条路是要持续突破新场景，要识别分子式，希望把证件类和票据类的APR归一，很多公司都希望用一个模型包打天下，省时省力。其次是推理和训练速度要持续优化，因为训练速度的提高意味着产品更快的迭代，而推理速度的提高意味着成本更可控。

Google研发产品经理杨民光分享了Google的开源跨平台多媒体机器学习模型应用框架MediaPipe。MediaPipe是一个针对机器学习工程师和研发人员的多媒体机器学习落地框架，用来帮助建立感知流水线。这个框架从2012年就开始研发，在谷歌内部用来做视频和音频方面的落地场景，比如YouTube每分钟上传两三千个小时的视频，Google要用机器模型看这个视频是否有黄色和暴力，处理视频的正是MediaPipe。

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https://blog.csdn.net/weixin_42232219/article/details/100644707

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