Efficient Distance Pruning for Process Suffix Comparison in Prescriptive Process Monitoring

Sarra Madad

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arXiv · 2602.09039

Efficient Distance Pruning for Process Suffix Comparison in Prescriptive Process Monitoring

Sarra Madad

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Abstract

Prescriptive process monitoring seeks to recommend actions that improve process outcomes by analyzing possible continuations of ongoing cases. A key obstacle is the heavy computational cost of large-scale suffix comparisons, which grows rapidly with log size. We propose an efficient retrieval method exploiting the triangle inequality: distances to a set of optimized pivots define bounds that prune redundant comparisons. This substantially reduces runtime and is fully parallelizable. Crucially, pruning is exact: the retrieved suffixes are identical to those from exhaustive comparison, thereby preserving accuracy. These results show that metric-based pruning can accelerate suffix comparison and support scalable prescriptive systems.

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Sarra Madad. 2026-01-30. Efficient Distance Pruning for Process Suffix Comparison in Prescriptive Process Monitoring. https://arxiv.org/abs/2602.09039

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