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So, what is AI?
Courtesy of scienceabc.com
AI的起源:
Machine Learning
機器學習
AI
Machine
Learning
Deep
Learning
深度學習
Machine Learning (Statistical Learning)
機器學習 vs. 程式設計
Francois Chollet, “Deep Learning with Python,” Manning, 2017
一般程式設計
機器學習
監督式
學習
非監督
式學習
強化學習
Five Tribes of Machine Learning
機器學習的五大門派
• Evolutionaries (演化法)
• Connectionists (類神經網路)
• Symbolists (邏輯歸納法)
• Bayesians (貝氏機率)
• Analogizers (類比近似)
Pedro Domingos
The Master Algorithm – Pedro Domingos
3 Basic Operations of Algorithms
演算法的三大元素
• All Algorithms can be Reduced to 3 Operations
1
0
0 0
1
0
1 1
XOR
1
1
0
1_intro2AI.pdf
Neuron
神經元
Frank Rosenblatt’s Perceptron (1957)
1_intro2AI.pdf
Number of Connections in the Brain
每個人腦中都有個小宇宙!?
Neurons (for adults):
10^11, or 100 billion, 100000000000
Synapses (based on 1000 per neuron):
10^14, or 100 trillion, 100000000000000
(每個神經元約有1000突觸)
1_intro2AI.pdf
1_intro2AI.pdf
Deep Learning
19
Learning XOR (1986)
Geoffrey Hinton
Backpropagation (反向傳播)
Inference (推理: 使用模型)
Chain Rule
Example: Recognizing Handwritten Digits
•MNIST dataset
3Blue1Brown
1_intro2AI.pdf
Gradient Descent
1_intro2AI.pdf
Convolutional Neural Network (LeNet-5)
• https://medium.com/@sh.tsang/paper-brief-review-of-lenet-1-lenet-4-lenet-5-
boosted-lenet-4-image-classification-1f5f809dbf17
1_intro2AI.pdf
ImageNet Large Scale
Visual Object
Recognition Challenge
(ILSVRC)
ImageNet
影像分類
競賽
• 1000 categories
• For ILSVRC 2017
− Training images for each category ranges from
732 to 1300
− 50,000 validation images and 100,000 test
images.
• Total number of images in ILSVRC 2017 is
around 1,150,000
31
Error Rate on ImageNet Challenge
Convolutional Neural Network (AlexNet)
• Alex Krizhevsky, Geoffery Hinton et al., 2012
Error Rate on ImageNet Challenge
1_intro2AI.pdf
1_intro2AI.pdf
https://memoiry.me/2017/04/22/deep-learning-series-2-typical-CNN-net/
CNN Comparison
https://medium.com/analytics-vidhya/cnns-architectures-lenet-alexnet-vgg-googlenet-resnet-and-more-666091488df5
Recurrent Neural Networks (RNN)
Unroll the RNN
Long Short-term Memory (LSTM)
Deep Reinforcement Learning
(深度強化學習)
Reinforcement
Learning
Action
𝑎𝑡
Observation 𝑠𝑡
Reward 𝑟𝑡
Environment
Agent
1_intro2AI.pdf
DRL in Atari
Mnih et al., “Human Level Control through Deep Reinforcement Learning,” Nature, 2015
Learning to Play Atari Games
AlphaGo
Dr. Aja Huang (黃士杰)
The Complexity of Go vs Chess
AlphaGo Zero
51
52
Human
Extinction
?
Human’s Hope
1_intro2AI.pdf
Virtual-to-real Learning
• Inspired by DeepMind (Mnih et al., Nature, 2015)
− “Human Level Control through Deep Reinforcement Learning”
• Applied to computer vision applications
− Image segmentation: Armeni et al. (2016), Qiu et al., (2017)
− Indoor navigation: Brodeur et al. (2017), Gupta et al. (2017), Savva et al.
(2017), Wu et al. (2018)
− Autonomous vehicles: Marinez et al. (2017), Muller et al. (2018), Pan et al.
(2017), Shah et al. (2018)
56
UnrealCV CAD2Real
57
Semantic Segmentation
Depth Prediction
VIVID
Autonomous Navigation
Action Recognition
Simulate
Real-life Events
58
Searching for the Shooter
59
Limits of Deep Learning
深度學習無所不能?
No Idea of Real World
Alcorn et al., “Strike (with) a pose: Neural networks are easily fooled by strange poses of familiar objects,”CVPR 2019.
1_intro2AI.pdf
1_intro2AI.pdf
Adversarial Attack
Generative Adversarial Networks (GAN)
• Ian Goodfellow
Painting like Van Gogh
Super Resolution
67
DeepFake: Is this you?
68
https://www.youtube.com/watch?v=gLoI9hAX9dw
Google’s AutoML
• Learning neural network cells automatically
70
https://ai.googleblog.com/2017/11/automl-for-large-scale-image.html
AutoML on ImageNet
71
EfficientNet (May, 2019)
72
73
Transformer & GPT3
https://www.youtube.com/watch?v=SZorAJ4I-sA
Attention
is All You
Need!
huggingface.co
huggingface.co
10 Jobs of the Future
Fortune India, 2015
1. The Data
Managers
(Data Scientists)
The sexiest job of the 21st
century (Harvard Business
Review)
2. The Space Invaders
Demand for satellite engineers is going
up, but there’s little training available.
3. The Electronic (Digital)
Warriors
Defense electronics engineers will be in demand, but supply will be very
short.
4. The Drone Operators
(Fleet Commanders)
The market is set to open up
to commercial operators, but
a dearth of qualified engineers
could ground it.
5. The New-age Printers
•3D printing could change
manufacturing forever,
and all it needs are
hardware engineers.
6. The Robotic Engineers
• The robots are coming. Technology research
and advisory firm Gartner predicts that
more than 30% of all jobs will be replaced
by robots and smart machines by 2025, and
Ray Kurzweil, director of engineering at
Google, anticipates that human thinking will
become hybrid (biological and artificial
intelligence) by the 2030s.
7. The Cyberspace
Ninjas
(Cybersecurity)
Prevention of data theft is just one of their
jobs.
8. The Gene
Splicers
9. The Green Warriors
• India’s big push towards clean energy
is changing the job market.
10. The Medical Mechanics
AI CT Scan
https://tectales.com/ai/ai-used-to-identify-different-types-of-brain-injuries.html
References
1. https://www.buzzfeed.com/kasiagalazka/science-fiction-things-that-actually-exist-now
2. https://www.geek.com/movies/10-movies-that-helped-create-real-technology-1740036/
3. https://www.gadgetsnow.com/slideshows/8-sci-fi-movie-technologies-that-are-real-now/Video-
calling/photolist/52869590.cms
4. What is backpropagation really doing? https://www.youtube.com/watch?v=Ilg3gGewQ5U
5. http://www.andreykurenkov.com/writing/ai/a-brief-history-of-neural-nets-and-deep-learning/
6. https://pmirla.github.io/2016/08/16/AI-Winter.html
7. https://tw.saowen.com/a/6cdc2f1279016e566832bb1234e06d321992dd1fabcdf4a2e0a3e16fc0dc09dc
8. https://tectales.com/ai/ai-used-to-identify-different-types-of-brain-injuries.html
9. Transformers, explained: Understand the model behind GPT, BERT, and T5
10. https://transformer.huggingface.co/

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1_intro2AI.pdf