Francesco Cellinese

dblp:209/9531 · DBLP profile ↗
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4ranked-venue papers
3as first author
2since 2021 · last 2021
—ORCID · none

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Theory of computation · 4 · 3 first-author · 2 since 2021
YearPublicationVenuePosition
2021 The Multi-budget Maximum Weighted Coverage Problem
Francesco Cellinese, Gianlorenzo D'Angelo, Gianpiero Monaco, Yllka Velaj
CIAC1
2021 Generalized budgeted submodular set function maximization
Francesco Cellinese, Gianlorenzo D'Angelo, Gianpiero Monaco, Yllka Velaj
Inf. Comput.1
2018 On Colorful Bin Packing Games
Vittorio Bilò, Francesco Cellinese, Giovanna Melideo, Gianpiero Monaco
COCOON2
2018 Generalized Budgeted Submodular Set Function Maximization
abstract
In this paper we consider a generalization of the well-known budgeted maximum coverage problem. We are given a ground set of elements and a set of bins. The goal is to find a subset of elements along with an associated set of bins, such that the overall cost is at most a given budget, and the profit is maximized. Each bin has its own cost and the cost of each element depends on its associated bin. The profit is measured by a monotone submodular function over the elements. We first present an algorithm that guarantees an approximation factor of $\frac{1}{2}\left(1-\frac{1}{e^α}\right)$, where $α\leq 1$ is the approximation factor of an algorithm for a sub-problem. We give two polynomial-time algorithms to solve this sub-problem. The first one gives us $α=1- ε$ if the costs satisfies a specific condition, which is fulfilled in several relevant cases, including the unitary costs case and the problem of maximizing a monotone submodular function under a knapsack constraint. The second one guarantees $α=1-\frac{1}{e}-ε$ for the general case. The gap between our approximation guarantees and the known inapproximability bounds is $\frac{1}{2}$. We extend our algorithm to a bi-criterion approximation algorithm in which we are allowed to spend an extra budget up to a factor $β\geq 1$ to guarantee a $\frac{1}{2}\left(1-\frac{1}{e^{αβ}}\right)$-approximation. If we set $β=\frac{1}α\ln \left(\frac{1}{2ε}\right)$, the algorithm achieves an approximation factor of $\frac{1}{2}-ε$, for any arbitrarily small $ε>0$.
Francesco Cellinese, Gianlorenzo D'Angelo, Gianpiero Monaco, Yllka Velaj
MFCS1