activity
20142017
most citedDeciding the On-line Chromatic Number of a Graph with Pre-Coloring is PSPACE-Complete

1 citations · 1 across the 5 of their papers we have counts for

collaborators

6 papers

cs.DS2017

Advice Complexity of the Online Search Problem

Jhoirene Clemente, Juraj Hromkovic, Dennis Komm +1

The online search problem is a fundamental problem in finance. The numerous direct applications include searching for optimal prices for commodity trading and trading foreign curre…

cs.DS2016

Weighted Online Problems with Advice

Joan Boyar, Lene M. Favrholdt, Christian Kudahl +1

Recently, the first online complexity class, AOC, was introduced. The class consists of many online problems where each request must be either accepted or rejected, and the aim is…

cs.CC2015

Advice Complexity of the Online Induced Subgraph Problem

Dennis Komm, Rastislav Královič, Richard Královič +1

Several well-studied graph problems aim to select a largest (or smallest) induced subgraph with a given property of the input graph. Examples of such problems include maximum indep…

cs.DM2015

Adding Isolated Vertices Makes some Online Algorithms Optimal

Joan Boyar, Christian Kudahl

An unexpected difference between online and offline algorithms is observed. The natural greedy algorithms are shown to be worst case online optimal for Online Independent Set and O…

cs.DS2014

The Advice Complexity of a Class of Hard Online Problems

Joan Boyar, Lene M. Favrholdt, Christian Kudahl +1

The advice complexity of an online problem is a measure of how much knowledge of the future an online algorithm needs in order to achieve a certain competitive ratio. Using advice…

cs.CC2014★ 1 cited

Deciding the On-line Chromatic Number of a Graph with Pre-Coloring is PSPACE-Complete

Christian Kudahl

The problem of determining if the on-line chromatic number of a graph is less than or equal to k, given a pre-coloring, is shown to be PSPACE-complete.