CHAPTER1 INTRODUCTION -- Deep Learning Book Reading notes
2017-01-12 23:01
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1. AI system -> Deep learning
Background: programmable computer -> artifical intelligenceProblem: Abstract and formal problem(easy) -> Informal and intuitive problem(hard)
Projects:
Rely on knowledge from human: hard-code knowledge in formal language (unwieldy)
Gain knowledge from raw data: machine learning
Rely on representation of data
Representation learning:
Simple: Auto-encoder
Sophisticated, high-level, abstract feartures: Deep learning
Deep learning
Bulid complex concepts
how to measure the depth of the network
the number of sequential instructions (depth of computational graph)
deep probabilistic model (depth of related concepts)
A Venn diagram showing the relation of Deep learning, Representation learning, Machine learning and AI.
Flowcharts showing how AI system relate to each other.
2.Historcal Trends in Deep Learning
Three historical waves of artifical neural nets research
model | Training |
---|---|
Cybernetics (parallel distributed processing) | single neuron |
Connectionism | neural network (only 1 or 2 hidden layers) |
Deep learning | deep network |
Increasing Dataset Sizes & Model Sizes & Accuracy, Complexity and Real-Word Impact
Supervised learning
Unsupervised learning
Reinforcement learning
关于RL及其SL,UL的区别,参考此页.
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