Author

Matic Požar

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Preprint Sep 2026

Exact Greedy Influence Maximization in Linear Time on Bounded-Treewidth Graphs

Computing influence spread under the Independent Cascade (IC) model is #P-hard, and influence maximization is commonly approached using Monte Carlo or reverse-reachable-set sampling. We study IC diffusion on bounded-treewidth graphs. Using probability distributions over separator reachability relations, we obtain exact...

Matic Požar · 0 citations

Preprint Aug 2026

On the Instance Optimality of Bidirectional Dijkstra's Algorithm

This work proposes a minimal simple modification of the bidirectional Dijkstra algorithm and proves that the resulting variant is instance optimal in the weighted setting, and shows instance optimality for a broad class of instances.

Matic Požar · 1 citation