---
# System prepended metadata

title: '專題演講: 大 AI 時代的起點'
tags: [openning, '20200704']

---

# 專題演講: 大 AI 時代的起點
###### tags: `20200704` `openning`


## Neural Network
Neuron => Perceptron
Forward: Inference/Backward

模擬人腦的神經連結方式

x1 X w11 + x2 X w21 + x3 X w31 + b1 -> Activate function

## Deep Neural Network(Deep Learning)
有一個大神用了CNN，贏得視覺設計競賽第一名
所以就紅起來了

## Why DL is hotter than ML
In more compute, DL's accuracy is more than ML. 

## Reasons Behind the Boom
如果大家有學過大一微積分
>DNN: Gradient Descent and Backpropagation
>CNN: Convolution and NN-ized

計算複雜度下降ＶＳ計算力提升=>人工智慧的黃金交叉

Big Data: ImageNet and ILSVRC
Software Tools/Communities: github and kaggle

## Growing Use of Deep Learning at Google
越來越多服務使用ai技術

### 時間到

