58-深度学习吴恩达谈深度学习：数据科学家需要知道这些.docx

【深度学习】吴恩达谈深度学习：数据科学家需要晓得 这些2020-05-08 原文
数据科学家需要什么深度学习学问？吴恩达(Andrew Ng )用机器看图说话，机器 问答等实例告知大家。本文是吴恩达在2015年12月在ExtractConf上的演讲摘 录，含20分钟视频与ppt。
Andrew Ng在Import 10主办的ExtractConf的演讲，谈数据科学家需要晓得的深 度学习学问。当时还演示了机器看图说话，机器问答，Dulight , Faceyou的效果。 其中Faceyou就是个APP ,能实时对人脸做3D建模，替换其他的鬼脸，他开玩笑 说赶在万圣节之前上线，以后都不要买道具，一秒变鬼畜。
下面是演讲PPTKesesrch
What data scientists should know
about deep learning
Andrew Ng
为什么数据科学家需要学习深度学习?
Andrew NgSpeech
BehaviorImages
Applications of Deep Learning■

百度深度语音：火箭引擎
Baidu Deep Speech: The rocket fuel (data)120000 i 100000 - 80000 i
Hours of data40000 20000
300
2000
WSJ
Switchboard
Ftsher

Dataset
Andrew Ng

Speech recognition performance

语音识别的表现Error

Most people don't understand the difference
between 95% accuracy and 99% accuracy.
99% is game changing.
With 99% accuracy, we could
redesign your cellphone using a
speech interface.
Andrew Ng语音将会转变物联网
大多数人都不明白95%精确
度和99%精确
度的区分
Speech will transform the Internet of Things

o
ra
Car interfaces
Home appliances
Wearables

(e.gM TV. microwave,

music player)

痴 R BMrVch

Andrew Ng

Applications of Deep Learning

Images
Speech
Behavior

Andrew Ng深度学习的使用

Deep Learning and big data

Web search/AdvertisingDatacenter management
Computer security

The problem of scale: Mobile devices

Image72 keypointsFace segmentation

Binary size
Speed
Desktop model
153MB
1.25 fpsI
规模化的问题：移动设备Faceyou
(available on Apple app store)

Andrew NgFaceyou APP

The future of Deep Learning

The Al rocketImages
SpeechBehavior

We have superpowersData Science
Andrew Ng先进制造业+工业互联网

计算机视觉：找咖啡杯
大脑中的神经元

Computer visionAndrew Ng

计算机视觉

What is a neural network?

W2 • W.
Yes/No
(Mug or not?)

X2 = (W|XxJ.
d 一x3 = (W2xx2)>■ *BMMChAndrew Ng
什么是神经元网络

深度学习为什么能得到腾飞式进展

Rocket engines: Deep Learning driven by scaleCPU
1 million
connections
(2007)

CPU
1 million
connections
(2007)
GPU
10 million
connections
(2008)
Cloud
(many CPUs)
1 billion
connections
(2011)
HPC
(many GPUs)
100 billion
connections
(2015)

火箭引擎：由规模化驱动的深度学习
Can a computer understand these pictures?
A yellow bus driving down a road with green trees and green grass in the background
Living room with white couch and blue carpeting The room in the apartment gets some afternoon sun
Andrew Ng

X
Image
计算机能理解这些图片吗
Supervised learning (learning from labeled data)Y
CaptionA yellow bus driving down a road with green trees and green grass in the background.
监督式学习

Learning to CaptionCaption
Data (image)/—1A yellow bus
[•J driving down.…Andrew Ng
学习写图说

Y
Answer
Learning to answer questions
X
(Image.Quesbon)What ts the color \..
-1The bus is red.
of the bus?I(公共汽左豪设乞■色的？)/

学会回答问题

Learning to Answer QuestionsThe bus is red ….
Data (image, question)
Andrew NgBai 覆 Ught