activity
20242026
most citedMinimizing the Number of Tardy Jobs and Maximal Tardiness on a Single Machine is NP-hard

2 citations · 2 across the 9 of their papers we have counts for

collaborators

10 papers

cs.DS2026

Approximate Total Weighted Completion Time with Convex Controllable Processing Times

Klaus Heeger, Danny Hermelin, Dvir Shabtay

We study the single-machine scheduling problem with controllable processing times to minimize the total weighted completion time, focusing on the setting where a job's processing t…

cs.DS2026

Lawler-Moore Speedups via Additive Combinatorics

Karl Bringmann, Danny Hermelin, Tomohiro Koana +1

The Lawler-Moore dynamic programming framework is a classical tool in scheduling on parallel machines. It applies when the objective is regular, i.e. monotone in job completion tim…

cs.DS2026

Fast Makespan Minimization via Short ILPs

Danny Hermelin, Dvir Shabtay

Short integer linear programs are programs with a relatively small number of constraints. We show how recent improvements on the running-times of solvers for such programs can be u…

cs.DS2026

Robust Permutation Flowshops Under Budgeted Uncertainty

Noam Goldberg, Danny Hermelin, Dvir Shabtay

We consider the robust permutation flowshop problem under the budgeted uncertainty model, where at most a given number of job processing times may deviate on each machine. We show…

cs.DS2025

Approximation Algorithms for Fair Repetitive Scheduling

Danny Hermelin, Danny Segev, Dvir Shabtay

We consider a recently introduced fair repetitive scheduling problem involving a set of clients, each asking for their associated job to be daily scheduled on a single machine acro…

cs.DM2025

Concurrency Constrained Scheduling with Tree-Like Constraints

Hans L. Bodlaender, Danny Hermelin, Erik Jan van Leeuwen

This paper investigates concurrency-constrained scheduling problems, where the objective is to construct a schedule for a set of jobs subject to concurrency restrictions. Formally,…

cs.DS2025

Faster Minimization of Total Weighted Completion Time on Parallel Machines

Danny Hermelin, Tomohiro Koana, Dvir Shabtay

We study the classical problem of minimizing the total weighted completion time on a fixed set of identical machines working in parallel, the problem in the s…

cs.DS2024

Fair Repetitive Interval Scheduling

Klaus Heeger, Danny Hermelin, Yuval Itzhaki +2

Fair resource allocation is undoubtedly a crucial factor in customer satisfaction in several scheduling scenarios. This is especially apparent in repetitive scheduling models where…

cs.DS2024★ 2 cited

Minimizing the Number of Tardy Jobs and Maximal Tardiness on a Single Machine is NP-hard

Klaus Heeger, Danny Hermelin, Michael L. Pinedo +1

This paper resolves a long-standing open question in bicriteria scheduling regarding the complexity of a single machine scheduling problem which combines the number of tardy jobs a…

cs.DS2024

Minimizing the Weighted Number of Tardy Jobs is W[1]-hard

Klaus Heeger, Danny Hermelin

We consider the problem, the problem of minimizing the weighted number of tardy jobs on a single machine. This problem is one of the most basic and fundamental pr…