Hasso-Plattner-Institut
Prof. Dr. Tobias Friedrich
 

Dr. Davis Issac

This is an archived page of a former group member.

Research Interests

I have so far worked mainly in the areas of

  • Graph algorithms,
  • Graph theory, and
  • Parameterized algorithms.

Broadly, I am interested in working on problems that are combinatorial in nature and also appear in real applications.

Some specific topics that i am working on are the following: 

  • Covering and partitioning of the edges of a graph with cliques/bicliques
  • Binary Matrix Factorization
  • Partitioning a graph into connected subgraphs
  • Graph cut problems such as multi-way cut and multi-cut

 

Publications

[ 2024 ] [ 2023 ] [ 2022 ] [ 2021 ] [ 2020 ] [ 2019 ] [ 2018 ] [ 2016 ]

2024 [ nach oben ]

  • A Contraction Tree SAT En... - Download
    Horev, Yinon; Shay, Shiraz; Cohen, Sarel; Friedrich, Tobias; Issac, Davis; Kamma, Lior; Niklanovits, Aikaterini; Simonov, Kirill A Contraction Tree SAT Encoding for Computing Twin-WidthAdvances in Knowledge Discovery and Data Mining 2024
     

2023 [ nach oben ]

  • Applying Skeletons to Spe... - Download
    Khomutovskiy, Ivan; Dunker, Rebekka; Dierking, Jessica; Egbert, Julian; Helms, Christian; Schöllkopf, Finn; Casel, Katrin; Fischbeck, Philipp; Friedrich, Tobias; Isaac, Davis; Krogmann, Simon; Lenzner, Pascal Applying Skeletons to Speed Up the Arc-Flags Routing AlgorithmSIAM Symposium on Algorithm Engineering and Experiments (ALENEX) 2023: 110–122
     
  • Approximate Max-Flow Min-... - Download
    Friedrich, Tobias; Issac, Davis; Kumar, Nikhil; Mallek, Nadym; Zeif, Ziena Approximate Max-Flow Min-Multicut Theorem for Graphs of Bounded TreewidthSymposium Theory of Computing (STOC) 2023: 1325–1334
     
  • Efficient Constructions f... - Download
    Casel, Katrin; Friedrich, Tobias; Issac, Davis; Niklanovits, Aikaterini; Zeif, Ziena Efficient Constructions for the Gyori-Lovasz Theorem on Almost Chordal GraphsWorkshop Graph-Theoretic Concepts in Computer Science (WG) 2023: 143–156
     

2022 [ nach oben ]

  • A Primal-Dual Algorithm f... - Download
    Friedrich, Tobias; Issac, Davis; Kumar, Nikhil; Mallek, Nadym; Zeif, Ziena A Primal-Dual Algorithm for Multicommodity Flows and Multicuts in Treewidth-2 GraphsApproximation Algorithms for Combinatorial Optimization Problems (APPROX) 2022: 55:1–55:18
     

2021 [ nach oben ]

  • Parameterized Algorithms ... - Download
    Cooley, Madison; Greene, Casey; Issac, Davis; Pividori, Milton; Sullivan, Blair Parameterized Algorithms for Identifying Gene Co-Expression Modules via Weighted Clique DecompositionApplied and Computational Discrete Algorithms (ACDA) 2021: 111–122
     
  • Connected k-Partition of ... - Download
    Borndörfer, Ralf; Casel, Katrin; Issac, Davis; Niklanovits, Aikaterini; Schwartz, Stephan; Zeif, Ziena Connected k-Partition of k-Connected Graphs and c-Claw-Free GraphsApproximation Algorithms for Combinatorial Optimization Problems (APPROX) 2021: 27:1–27:14
     
  • Balanced Crown Decomposit... - Download
    Casel, Katrin; Friedrich, Tobias; Issac, Davis; Niklanovits, Aikaterini; Zeif, Ziena Balanced Crown Decomposition for Connectivity ConstraintsEuropean Symposium on Algorithms (ESA) 2021: 26:1–26:15
     
  • A Color-blind 3-Approxima... - Download
    Casel, Katrin; Friedrich, Tobias; Issac, Davis; Klodt, Nicolas; Seifert, Lars; Zahn, Arthur A Color-blind 3-Approximation for Chromatic Correlation Clustering and Improved HeuristicsKnowledge Discovery and Data Mining (KDD) 2021: 882–891
     

2020 [ nach oben ]

  • Feldmann, Andreas; Issac, Davis; Rai, Ashutosh Fixed-Parameter Tractability of the Weighted Edge Clique Partition ProblemInternational Symposium on Parameterized and Exact Computation (IPEC) 2020: 1–16
     

2019 [ nach oben ]

  • Hadwiger's conjecture for... - Download
    Issac, Davis; Chandran, L. Sunil; Zhou, Sanming Hadwiger’s conjecture for squares of 2-treesEuropean Journal of Combinatorics 2019: 159–174
     

2018 [ nach oben ]

  • Sampling in space restric... - Download
    Issac, Davis; Bhattacharya, Anup; Kumar, Amit; Jaiswal, Ragesh Sampling in space restricted settingsAlgorithmica 2018: 1439–1458
     
  • Spanning tree congestion ... - Download
    Issac, Davis; Chandran, L. Sunil; Cheung, Yuen Kueng Spanning tree congestion and computation of gyori lovasz partitionInternational Colloquium on Automata, Languages, and Programming (ICALP) 2018: 1–14
     
  • Algorithms and bounds for... - Download
    Issac, Davis; van Leeuwen, Erik Jan; Das, Anita; Chandran, L. Sunil Algorithms and bounds for very strong rainbow coloringLatin American Symposium on Theoretical Informatics Conference (LATIN) 2018: 625–639
     
  • Rainbow Vertex Coloring B... - Download
    Issac, Davis; van Leeuwen, Erik Jan; Lauri, Juho; Lima, Paloma; Heggernes, Pinar Rainbow Vertex Coloring Bipartite Graphs and Chordal GraphsMathematical Foundations of Computer Science (MFCS) 2018: 1–13
     

2016 [ nach oben ]

  • On the Parameterized Comp... - Download
    Issac, Davis; Chandran, L. Sunil; Karrenbauer, Andreas On the Parameterized Complexity of Biclique Cover and PartitionInternational Symposium on Parameterized and Exact Computation (IPEC) 2016: 1–13