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breveWalker

By artificial

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Description

*** Now you can upgrade in-app to a customizable breveWalker robot! ***

Robotics, artificial intelligence and realistic physics! THE CLASSIC MAC OS X SCREENSAVER BREVEWALKER, NOW FOR THE IPHONE!

breveWalker is an experiment in artificial intelligence and robotics which uses a genetic algorithm to teach a legged robot how to walk. Starting with completely random behaviors, the system uses evolution to discover walking strategies which carry the robot the farthest.

A genetic algorithm is an artificial intelligence technique, inspired by nature, in which solutions to a problem are evolved over time using selection, mutation and genetic recombination.

Starting with completely randomized data, a genetic algorithm tests potential solutions one by one, breeding and mutating those that preform well and discarding those that do not. Over time, the randomized data evolves into robust solutions to problem that the genetic algorithm is trying to solve.

In breveWalker, the genetic algorithm is attempting to solve the problem of finding efficient walking behaviors for a realistic, physically-simulated, legged robot. The walking behaviors are encoded as a series of variables that influence the movement of each joint in the robot. The genetic algorithm picks the best potential solutions by looking at the distance that the walker travels while controlled by a given individual.

NOTE! Evolving effective walkers can require a while to run, but progress is saved between launches of the app.

What's New in Version 1.1

• Fixed rendering problems on iPhone 3GS
• Improved graphics and performance
• Twitter post usability bugfixes
• Added in-app purchase option to get a customizable robot

Screenshots

Customer Reviews

Fantastic port of a classic app
     

If you've never used BreveWalker before, the deal is: There is weird looking creature in an environment that looks somewhat like 'Tron'. The creature starts out knowing nothing; it wiggles around for a while, but eventually, using advanced AI techniques, it teaches itself how to walk. And then run! It's fun to watch, and it's excellent that this version allows you to save the progress of the creature's evolution. The Twitter integration is a great touch too!

This app is so cool!
     

I've never quite seen anything like this app. Its amazing to watch the robot "learn" to walk on its own. This is a super cool demo of genetic algorithms and gives us insight into how we've evolved. This is a must get!

Interesting implementation...some problems
     

Update to my first post: The graphics work properly on my 3G S now.
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I bought this to support the breve effort. It's cool to see this kind of thing on the phone, but there seems to be some graphics issues on my 3G S. The actual walker body seems to go off from one set of legs and never connects with the other. The legs appear to be doing what they should, but the body is all wrong. Zooming in or out and around does not help. I hope this gets fixed in a future version.

breveWalker
View In iTunes $0.99
  • Category: Entertainment
  • Updated Dec 05, 2009
  • Current Version: 1.1
  • 4.8 MB
  • Languages: English
  • Seller: Jonathan Klein

Requirements: Compatible with iPhone and iPod touch. Requires iPhone OS 3.0 or later.

Customer Ratings

Current Version:
     
61 Ratings
All Versions:
     
64 Ratings

Top In App Purchases

  1. 1 Customizable Walker Robot $0.99