daniel shiffman

Is it a penguin? A tooth? A surfer from the future? Whatever it is, this announcement sure does make me happy. Read more about it at Create Digital Motion, one of my new favorite blogs!

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So after a fierce battle with my own neurons, I am ready to release part II of my Processing series: “Neural Network! Huah! What is it good for? (Sing it again, now.)”
This example implements a multi-layered neural network that learns via “back propogation.” It’s specifically trained to solve XOR. [...]

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Long overdue, I’ve started working on a series of

watch video!Thanks to an idea from students in my icm class (see Catherine’s “greedy game-animated sprite”), I developed a Processing library that grabs values from Apple’s sudden motion sensor. The library is a JNI implementation of Unimotion by Lincoln Ramsay. It hasn’t been tested on an intel mac, so let me know if [...]

I’ve been meaning to add something to processing hacks for quite some time now. This morning, I needed a basic function to wrap text in Processing so came up with this snippet.

// Function to return an ArrayList of Strings
// (maybe redo to just make simple array?)
// Arguments: String to be wrapped, maximum width [...]

This is a quick visualization of data from the netflix prize. A vertical bar is drawn for every customer rating a movie. Ratings go from 1 to 5 stars (represented top to bottom.) Note how “Alien” (on the left) received many ratings of 4 and 5 stars, but “Predator” (on the right) [...]

Netflix recently released 100 million movie rating records as part of a contest to improve its movie recommendation system.
The problem:
I know how I rated a whole bunch of movies. I know how everyone else has rated a whole bunch of movies. For any given movie that I have not yet [...]