PACE_challenge's profile picture. The Parameterized Algorithms and Computational Experiments Challenge

PACE challenge

@PACE_challenge

The Parameterized Algorithms and Computational Experiments Challenge

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We now opened the leaderboard for this year's challenge about twinwidth. You can find the exact track at optil.io/optilion/probl… and the heuristic track at optil.io/optilion/probl…. We are looking forward to many exciting submissions to compute twinwidth decompositions!


The public instances for the cluster editing problem are now available for download! pacechallenge.org/2020/12/16/pub… #PACE2021


The program committee of #PACE2021 consists of André Nichterlein, Leon Kellerhals (@cofixit), Tomohiro Koana (@tomohirokoana), and Philipp Zschoche. All of them currently work at Technical University of Berlin. pacechallenge.org/2021/


#PACE2021 has three tracks. In the KERNELIZATION track, your task is to find an equivalent instance of each Cluster Editing instance within the time limit of 5 minutes. You will be ranked by the size of the returned instance. pacechallenge.org/2021/


#PACE2021 has three tracks. In the HEURISTIC track, your task is to find the best solution of each Cluster Editing instance within the time limit of 10 minutes. You will be ranked by the quality of the solution. pacechallenge.org/2021/


#PACE2021 has three tracks. In the EXACT track, your task is to find an optimal solution of each Cluster Editing instance within the time limit of 30 minutes. You will be ranked by the number of solved instances. pacechallenge.org/2021/


The #PACE2021 problem Cluster Editing can be solved in time 3^k poly(n) using a bounded search tree algorithm: If there is an induced path uvw, we must either add uw, or delete uv, or delete vw.

PACE_challenge's tweet image. The #PACE2021 problem Cluster Editing can be solved in time 3^k poly(n) using a bounded search tree algorithm: If there is an induced path uvw, we must either add uw, or delete uv, or delete vw.

#PACE2021 Cluster Editing is NP-hard. However, it has a simple fixed-parameter tractable (FPT) algorithm when parameterized by the number k of allowed edge modifications. (image CC-BY-SA-4.0 Fschwarzentruber)

PACE_challenge's tweet image. #PACE2021
Cluster Editing is NP-hard. However, it has a simple fixed-parameter tractable (FPT) algorithm when parameterized by the number k of allowed edge modifications.

(image CC-BY-SA-4.0 Fschwarzentruber)

#PACE2021 The Cluster Editing problem is one of the most natural ways to model clustering on graphs. Around 1000 publications contain the term "cluster editing": scholar.google.com/scholar?hl=en&…


#PACE2021 Clustering plays an important role in modern society. It is the task of partitioning instances into some number of groups (called clusters) such that instances in the same group are similar to one another.

PACE_challenge's tweet image. #PACE2021
Clustering plays an important role in modern society. It is the task of partitioning instances into some number of groups (called clusters) such that instances in the same group are similar to one another.

#PACE2021 This year, the Parameterized Algorithms and Computational Experiments problem is Cluster Editing: Find a minimum set of edge modifications (additions and deletions) that transforms the graph into a disjoint union of cliques. pacechallenge.org/2021/

PACE_challenge's tweet image. #PACE2021
This year, the Parameterized Algorithms and Computational Experiments problem is Cluster Editing: Find a minimum set of edge modifications (additions and deletions) that transforms the graph into a disjoint union of cliques.

pacechallenge.org/2021/

The results of fifth iteration of the Parameterized Algorithms and Experiments Challenge (PACE 2020) are out: pacechallenge.org/2020/results/ 51 participants, 20 teams, 12 countries, 3 continents


The PACE 2020 implementation challenge is proceeding as planned. It's not too late to participate! See pacechallenge.org/2020/

PACE_challenge's tweet image. The PACE 2020 implementation challenge is proceeding as planned. It's not too late to participate!
See pacechallenge.org/2020/

PACE 2020 is about the treedepth problem, and we expect the first preliminary submissions by March 13. pacechallenge.org/2020/

PACE_challenge's tweet image. PACE 2020 is about the treedepth problem, and we expect the first preliminary submissions by March 13. pacechallenge.org/2020/

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