AGENTIC-SYSTEMSApril 23, 20261 min read5 views

Skyline-First Traversal as a Control Mechanism for Multi-Criteria Graph Search

Researchers introduce Skyline-First Traversal, a novel control mechanism that leverages Pareto geometry alone to drive scheduling and termination in multi-criteria graph search, eliminating the need for external heuristics or scalarization.

Computer Science > Artificial Intelligence

Title:Skyline-First Traversal as a Control Mechanism for Multi-Criteria Graph Search

View PDF HTML (experimental)Abstract:In multi-criteria graph traversal, paths are compared via Pareto dominance, an ordering that identifies which paths are non-dominated, but says nothing about which path to expand next or when the search may stop. As a result, existing approaches rely on external mechanisms-heuristics, scalarization, or population-based exploration while Pareto dominance remains confined to passive roles such as pruning or ranking.

This paper shows that, under constrained cost models, finite cost grids, Markovian transitions, and a nonzero progress measure, Pareto geometry alone is sufficient to drive both scheduling and termination. We show that extracting exclusively from the first Pareto layer, the skyline, induces a deterministic descent in a discrete completion potential, ensuring monotone progress toward solution completion. In parallel, a vector lower-bound certificate provides a stopping condition that guarantees dominance coverage of all remaining traversals without requiring a predefined number of solutions.

Our analysis establishes deterministic potential descent, certified termination via dominance coverage, a uniform bound on layer width induced by cost-grid geometry, and greedy cost-space dispersion within the skyline. The resulting framework operates without scalarization, heuristic guidance, or probabilistic models, and repositions Pareto dominance from a passive filter to a deterministic driver of search.

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Source: arXiv cs.AI Recent

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