Parameterized complexity of machine scheduling: 15 open problems

M Mnich, R Van Bevern - Computers & Operations Research, 2018 - Elsevier
Abstract Machine scheduling problems are a long-time key domain of algorithms and
complexity research. A novel approach to machine scheduling problems are fixed …

An algorithmic theory of integer programming

F Eisenbrand, C Hunkenschröder, KM Klein… - arXiv preprint arXiv …, 2019 - arxiv.org
We study the general integer programming problem where the number of variables $ n $ is a
variable part of the input. We consider two natural parameters of the constraint matrix $ A …

Combinatorial n-fold integer programming and applications

D Knop, M Koutecký, M Mnich - Mathematical Programming, 2020 - Springer
Many fundamental NP NP-hard problems can be formulated as integer linear programs
(ILPs). A famous algorithm by Lenstra solves ILPs in time that is exponential only in the …

Faster algorithms for integer programs with block structure

F Eisenbrand, C Hunkenschröder, KM Klein - arXiv preprint arXiv …, 2018 - arxiv.org
We consider integer programming problems $\max\{c^ T x:\mathcal {A} x= b, l\leq x\leq u,
x\in\mathbb {Z}^{nt}\} $ where $\mathcal {A} $ has a (recursive) block-structure generalizing" …

Fixed-parameter tractability of scheduling dependent typed tasks subject to release times and deadlines

C Hanen, A Munier Kordon - Journal of Scheduling, 2024 - Springer
Scheduling problems involving a set of dependent tasks with release dates and deadlines
on a limited number of resources have been intensively studied. However, few …

Empowering the configuration-IP: new PTAS results for scheduling with setup times

K Jansen, KM Klein, M Maack, M Rau - Mathematical Programming, 2022 - Springer
Integer linear programs of configurations, or configuration IPs, are a classical tool in the
design of algorithms for scheduling and packing problems where a set of items has to be …

Block-structured integer and linear programming in strongly polynomial and near linear time

J Cslovjecsek, F Eisenbrand, C Hunkenschröder… - Proceedings of the 2021 …, 2021 - SIAM
We consider integer and linear programming problems for which the linear constraints
exhibit a (recursive) block-structure: The problem decomposes into independent and …

Near-Linear Time Algorithm for -Fold ILPs via Color Coding

K Jansen, A Lassota, L Rohwedder - SIAM Journal on Discrete Mathematics, 2020 - SIAM
We study an important case of integer linear programs (ILPs) of the form \max{c^Tx\vert\
mathcalAx=b,l≦x≦u,\,x∈Z^nt\} with nt variables and lower and upper bounds …

Tight complexity lower bounds for integer linear programming with few constraints

D Knop, M Pilipczuk, M Wrochna - ACM Transactions on Computation …, 2020 - dl.acm.org
We consider the standard ILP Feasibility problem: given an integer linear program of the
form {A x= b, x⩾ 0}, where A is an integer matrix with k rows and ℓ columns, x is a vector of ℓ …

On minimizing tardy processing time, max-min skewed convolution, and triangular structured ILPs

KM Klein, A Polak, L Rohwedder - Proceedings of the 2023 Annual ACM …, 2023 - SIAM
The starting point of this paper is the problem of scheduling n jobs with processing times and
due dates on a single machine so as to minimize the total processing time of tardy jobs, ie …