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New Admissible Heuristics For Domain-Independent Planning.pdf

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Preview of New Admissible Heuristics for Domain-Independent Planning
🔗 Source: cdn.aaai.org
📊 Size: 156 KB
👤 Author: Patrik Haslum
⬇️ Downloads: 305

Summary

The key contributions are:

1. Additive HM Heuristic: This heuristic combines multiple HM heuristics by partitioning actions into disjoint sets, assigning each set an HM value, and summing them up. It accurately estimates costs in problems where actions contribute to multiple subgoals.

2. Constrained PDB Heuristic: This enhances PDBs by incorporating constraints from the original problem. By strengthening lower bounds using these constraints, it improves heuristic quality.

Challenges Addressed:

- Reachability Heuristics: Only consider the cost of critical paths, ignoring other relevant paths' costs in sequential planning.
- PDB Heuristics: Struggle with problems involving many variables and lack methods for automatically selecting patterns that produce good estimates.

Evaluation:

The new heuristics outperformed existing ones in several domains, but no single heuristic dominated all others across all domains.

Methodological Contributions:

- Automated derivation of additive HM and PDB heuristics from STRIPS encodings.
- Demonstrating the effectiveness of these refinements in improving planning efficiency and accuracy.

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Description

These aim to improve efficiency while guaranteeing optimal solutions.

Technical Information

  • File Format: PDF
  • File Size: 156 KB
  • Pages: 6
  • Language: EN
  • Author: Patrik Haslum
  • Total Downloads: 305
  • Last Updated: 1 week ago

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This PDF document about New Admissible Heuristics for Domain-Independent Planning provides comprehensive information and guidance. Whether you're a beginner or advanced user, this resource offers valuable insights into New Admissible Heuristics for Domain-Independent Planning.

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Admissible guideAdmissible tutorialHeuristics guideHeuristics tutorialDomain-Independent guideDomain-Independent tutorialPlanning guidePlanning tutorial

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