5 papers
Hilbert basis in the face-centered cubic grid -- mathematical proofs
Bela Vizvari, Gergely Kovacs, Benedek Nagy +1
The Hilbert basis is fundamental in describing the structure of the integer points of a polyhedral cone. The face-centered cubic grid is one of the densest packing of the 3-dimensi…
Open Loop Layout Optimization: Feasible Path Planning and Exact Door-to-Door Distance Calculation
Seyed Mahdi Shavarani, Bela Vizvari, Kovacs Gergely
The Open Loop Layout Problem (OLLP) seeks to position rectangular cells of varying dimensions on a plane without overlap, minimizing transportation costs computed as the flow-weigh…
Variability in Modeling the Cyclic Scheduling of an FMC Depending on the Underlying TSP Models
Huseyin Guden, Mazyar Ghadiri Nejad, Gergely Kovacs +1
Flexible robotic cells are utilized to produce standardized products at a high speed production rate, and to set up the production floors based on rapid operating environment chang…
Reconstruction Rating Model of Sovereign Debt by Logical Analysis of Data
Elnaz Gholipour, Béla Vizvári, Zoltán Lakner
Sovereign debt ratings provided by rating agencies measure the solvency of a country, as gauged by a lender or an investor. It is an indication of the risk involved in investment,…
A Note on the Polytope of Bipartite TSP
Gergely Kovács, Zsolt Tuza, Béla Vizvári +1
The main result of this paper is that the polytope of the bipartite TSP is significantly different from that of the general TSP. Comb inequalities are known as facet defining ones…