GHOST Optimization Framework Overview

GHOST Optimization Framework

• GHOST is a combinatorial optimization framework tailored for real-time strategy (RTS) AI developers.
• Models problems as constraint satisfaction/optimization problems (CSP/COP).
• Demonstrated through various applications including the RTS game StarCraft.

Problem Modeling

• Three types of problems modeled as CSP/COP include:
  • Target Selection: Addressed as a reactive control problem.
  • Wall-in Tactics: Framed as a tactics problem.
  • Build Order Planning: Classified as a strategy problem.
• Each problem has a specific level of abstraction, crucial for effective modeling and solution finding.

Performance

• GHOST achieves good results, solving problems within tens of milliseconds.
• Outperforms state-of-the-art constraint solvers in several instances.
• Matches capabilities of conventional solvers in resource allocation problems.

Generalization and Usability

• CSP/COP models are versatile and apply to various AI problem domains like:
  • Pathfinding
  • Scheduling
  • Logistics
• Unlike mathematical programming, CSP/COP algorithms are not restricted to specific problems and allow for easy, intuitive modeling of diverse challenges.
• GHOST promotes user-friendly design and easy extension for developers.

RTS Problem Families

• RTS problems can be decomposed into three abstraction levels:
  • Strategy: High-level decision-making crucial for formulating effective tactics against opponents.
  • Tactics: Intermediate decision elements, focusing on immediate goals and actions.
  • Reactive Control: Fundamental decision mechanisms that respond directly to changing game states.

Relevance of RTS Games

• RTS games provide a conducive environment for testing AI models due to:
  • Limited domain complexity yet rich dynamics.
  • Challenges stemming from incomplete information, mimicking real-world decision-making scenarios.
• Clausewitz’s "fog of war" concept illustrates the difficulties faced by AI in deciphering global states during gameplay.

Discover the GHOST optimization framework designed for RTS AI developers. This quiz covers problem modeling, performance insights, and the generalization of CSP/COP models for effective AI problem solving. Test your knowledge of GHOST's applications in games like StarCraft.