What is machine learning?

什麼是機器學習？

You probably use it many times a day without even knowing it.

您可能每天都在不知不覺中使用它很多次。

Anytime you want to find out something like, how do I make a sushi roll?

任何時候你都想知道如何製作壽司卷？

You can do a web search on Google, Bing, or Baidu to find out.

您可以在谷歌、必應或百度上進行網絡搜索，瞭解相關資訊。

That works so well because the machine learning software has figured out how to rank web pages.

之所以效果如此之好，是因為機器學習軟件已經掌握了網頁排名的方法。

Or when you upload pictures to Instagram or Snapchat, and think to yourself, I want to tag my friends so they can see their pictures.

或者，當你把照片上傳到 Instagram 或 Snapchat 時，你會想，我想給我的朋友打上標籤，這樣他們就能看到自己的照片了。

Well, these apps can recognize your friends in your pictures and label them as well.

這些應用程序可以識別照片中的朋友，併為他們貼上標籤。

That's also machine learning.

這也是機器學習。

Or if you've just finished watching a Star Wars movie on the video streaming service, and you think, what are the similar movies that I watch?

或者，如果你剛在視頻流媒體服務上看完一部《星球大戰》電影，你會想，我看的類似電影有哪些？

Well, the streaming service will likely use machine learning to recommend something that you might like.

流媒體服務可能會使用機器學習來推薦你可能喜歡的內容。

Each time you use voice to text on your phone to write a text message, Hey Andrew, how's it going?

每次使用手機語音轉文字功能寫簡訊時，您都會說："嘿，安德魯，你好嗎？

Or tell your phone, Hey Siri, play a song by Rihanna.

或者告訴你的手機，嘿 Siri，播放一首蕾哈娜的歌。

Or ask your other phone, Okay Google, show me Indian restaurants near me.

或者讓你的另一部手機 "好的，谷歌，告訴我附近有哪些印度餐館"。

That's also machine learning.

這也是機器學習。

Each time you receive an email titled, Congratulations, you've won a million dollars.

每次您收到一封標題為 "恭喜您，您贏得了一百萬美元 "的電子郵件。

Well, maybe you're rich, congratulations.

也許你很有錢，恭喜你。

Or more likely your email service will probably flag it as spam.

更有甚者，您的電子郵件服務可能會將其標記為垃圾郵件。

That too is an application of machine learning.

這也是機器學習的一種應用。

Beyond consumer applications that you might use, AI is also rapidly making its way into big companies and into industrial applications.

除了您可能會用到的消費應用，人工智能也正迅速進入大公司和工業應用領域。

For example, I'm deeply concerned about climate change, and I'm glad to see that machine learning is already hoping to optimize wind turbine power generation.

例如，我非常關注氣候變化，我很高興看到機器學習已經有望優化風力渦輪機發電。

Or in healthcare, it's starting to make its way into hospitals to help doctors make accurate diagnoses.

在醫療保健領域，它也開始進入醫院，幫助醫生做出準確診斷。

Or recently at Learning AI, I've been doing a lot of work putting computer vision into factories to help inspect if something coming off the assembly line has any defects.

最近，我在學習人工智能（Learning AI）公司做了很多工作，將計算機視覺技術應用到工廠中，幫助檢查從裝配線上下來的東西是否有缺陷。

That's machine learning.

這就是機器學習。

It's a science of getting computers to learn without being explicitly programmed.

這是一門讓計算機在沒有明確編程的情況下進行學習的科學。

In this class, you learn about machine learning and get to implement machine learning in code yourself.

在這門課上，你將學習機器學習的相關知識，並親自用代碼實現機器學習。

Millions of others have taken the earlier version of this course, which is a course that led to the founding of Coursera.

數百萬人學習過這門課程的早期版本，正是這門課程促成了 Coursera 的成立。

And many learners ended up building exciting machine learning systems or even pursuing very successful careers in AI.

許多學習者最終建立了令人興奮的機器學習系統，甚至在人工智能領域取得了巨大成功。

I'm excited that you're on this journey with me.

我很高興你能和我一起踏上這段旅程。

Welcome, and let's get started.

歡迎您，讓我們開始吧。