slides.md

how to trick a neural network

by Julia Evans

• twitter: @b0rk
  
• blog: jvns.ca

notes at http://bit.ly/trick-neural-network

who am I

"neural networks seem really cool"

neural networks

deep learning

"magic"

very mysterious

is it magic only google can do?
Can I do it?

neural networks aren't magic: they're math

i have a math degree i can do this =D

this talk

1. what even is a neural network
2. download a neural network
3. play with it ("is this a cat?")
4. trick it

step 1: what even is a neural network

image classification

a neural network is a (deterministic!!) function

what we learned

• a neural net is a function
• made up of many simple functions
• that you learn from some data

step 2: download a neural network

50 megabytes

step 3: PREDICT SOME THINGS WITH IT

demo demo demo

step 4: trick it

back to math for a second

which direction do we take the image in?

best direction = derivative

demo demo demo

let's do more!!

don't trust machine learning models

try to trick the model!

what you can do next

• read the paper!
• play with the neural net yourself!
• read other machine learning papers
• try out tensorflow!
• ask me questions!

thanks! questions?

notes at http://bit.ly/trick-neural-network

• twitter: @b0rk
  
• blog: jvns.ca