A Learning Invader for the “Guarding a Territory” Game
A Reinforcement Learning Problem

This paper explores the use of a learning algorithm in the “guarding a territory” game. The game occurs in continuous time, where a single learning invader tries to get as close as possible to a territory before being captured by a guard. Previous research has approached the problem by letting only the guard learn. We will examine the other possibility of the game, in which only the invader is going to learn. Furthermore, in our case the guard is superior (faster) to the invader. We will also consider using models with non-holonomic constraints. A control system is designed and optimized for the invader to play the game and reach Nash Equilibrium. The paper shows how the learning system is able to adapt itself. The system’s performance is evaluated through different simulations and compared to the Nash Equilibrium. Experiments with real robots were conducted and verified our simulations in a real-life environment. Our results show that our learning invader behaved rationally in different circumstances.

GNU TeXmacs is a free wysiwyw (what you see is what you want) editing platform with special features for scientists. The software aims to provide a unified and user friendly framework for editing structured documents with different types of content (text, graphics, mathematics, interactive content, etc.). The rendering engine uses high-quality typesetting algorithms so as to produce professionally looking documents, which can either be printed out or presented from a laptop.

An Inkscape plugin that allows to organize a set of slides on top of Inkscape layers.
The plugin allows to export the slides as a pdf file composed by several pages, each one corresponding to one slide.

Syncthing replaces proprietary sync and cloud services with something open, trustworthy and decentralized. Your data is your data alone and you deserve to choose where it is stored, if it is shared with some third party and how it's transmitted over the Internet.

Looking for some thrillers that take place entirely in a single enclosed space? Agent Orange from Quiet Earth has counted down 13 of the most nail-biting flicks confined to four walls.

The trend towards well scripted, high concept thrillers that take place in just one location is truly peaking, and in anticipation of the claustrophobic thrills of both Devil and Buried on DVD and Blu-ray right away we thought we would countdown our favourite thrillers that take place in just one room. Grab a pen folks, 'cause you're gonna want to catch up with these claustrophobic thrill rides!