Artificial Intelligence
AI Magazine
Speeding up the Convergence of Real-Time Search
Proceedings of the Seventeenth National Conference on Artificial Intelligence and Twelfth Conference on Innovative Applications of Artificial Intelligence
Controlling the learning process of real-time heuristic search
Artificial Intelligence
A Comparison of Fast Search Methods for Real-Time Situated Agents
AAMAS '04 Proceedings of the Third International Joint Conference on Autonomous Agents and Multiagent Systems - Volume 2
Multiple agents moving target search
IJCAI'03 Proceedings of the 18th international joint conference on Artificial intelligence
RTTES: Real-time search in dynamic environments
Applied Intelligence
Proceedings of the 7th international joint conference on Autonomous agents and multiagent systems - Volume 1
Current Topics in Artificial Intelligence
Graph abstraction in real-time heuristic search
Journal of Artificial Intelligence Research
IJCAI'07 Proceedings of the 20th international joint conference on Artifical intelligence
Autonomous Agents and Multi-Agent Systems
On learning in agent-centered search
Proceedings of the 9th International Conference on Autonomous Agents and Multiagent Systems: volume 1 - Volume 1
Case-based subgoaling in real-time heuristic search for video game pathfinding
Journal of Artificial Intelligence Research
Propagating updates in real-time search: HLRTA (k)
CAEPIA'05 Proceedings of the 11th Spanish association conference on Current Topics in Artificial Intelligence
Real-time heuristic search with depression avoidance
IJCAI'11 Proceedings of the Twenty-Second international joint conference on Artificial Intelligence - Volume Volume One
Avoiding and escaping depressions in real-time heuristic search
Journal of Artificial Intelligence Research
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LRTA* is a real-time heuristic search algorithm widely used. In each iteration it updates the heuristic estimate of the current state. Here we present LRTA*(k), a new LRTA*-based algorithm that is able to update the heuristic estimates of up to k states, not necessarily distinct. Based on bounded propagation, this updating strategy maintains heuristic admissibility, so the new algorithm keeps the good theoretical properties of LRTA*. Experimentally, we show that LRTA*(k) produces better solutions in the first trial and converges faster when compared with other state-of-the-art algorithms on benchmarks for real-time search.