A polynomial algorithm for the 2-path problem for semicomplete digraphs
SIAM Journal on Discrete Mathematics
Rank aggregation methods for the Web
Proceedings of the 10th international conference on World Wide Web
Some optimal inapproximability results
Journal of the ACM (JACM)
The importance of being biased
STOC '02 Proceedings of the thiry-fourth annual ACM symposium on Theory of computing
An Approximation Algorithm for Feedback Vertex Sets in Tournaments
SIAM Journal on Computing
An Approximation Algorithm for Feedback Vertex Sets in Tournaments
SIAM Journal on Computing
On Feedback Problems in Diagraphs
WG '89 Proceedings of the 15th International Workshop on Graph-Theoretic Concepts in Computer Science
Efficient similarity search and classification via rank aggregation
Proceedings of the 2003 ACM SIGMOD international conference on Management of data
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Clustering with Qualitative Information
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Integrating Microarray Data by Consensus Clustering
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Relationship-based clustering and cluster ensembles for high-dimensional data mining
Relationship-based clustering and cluster ensembles for high-dimensional data mining
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Fitting tree metrics: Hierarchical clustering and Phylogeny
FOCS '05 Proceedings of the 46th Annual IEEE Symposium on Foundations of Computer Science
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SODA '06 Proceedings of the seventeenth annual ACM-SIAM symposium on Discrete algorithm
Ordering by weighted number of wins gives a good ranking for weighted tournaments
SODA '06 Proceedings of the seventeenth annual ACM-SIAM symposium on Discrete algorithm
Correlation clustering with a fixed number of clusters
SODA '06 Proceedings of the seventeenth annual ACM-SIAM symposium on Discrete algorithm
New algorithms research for first year students
Proceedings of the 11th annual SIGCSE conference on Innovation and technology in computer science education
Proceedings of the twenty-fifth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Proceedings of the 12th ACM SIGKDD international conference on Knowledge discovery and data mining
Algorithms for discovering bucket orders from data
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On the approximability of maximum and minimum edge clique partition problems
CATS '06 Proceedings of the 12th Computing: The Australasian Theroy Symposium - Volume 51
The Minimum Feedback Arc Set Problem is NP-Hard for Tournaments
Combinatorics, Probability and Computing
ACM Transactions on Knowledge Discovery from Data (TKDD)
Feedback arc set in bipartite tournaments is NP-complete
Information Processing Letters
Heuristic stability: A permutation disarray measure
Computers and Operations Research
Smooth sensitivity and sampling in private data analysis
Proceedings of the thirty-ninth annual ACM symposium on Theory of computing
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Cluster analysis of heterogeneous rank data
Proceedings of the 24th international conference on Machine learning
Hardness of fully dense problems
Information and Computation
Deterministic pivoting algorithms for constrained ranking and clustering problems
SODA '07 Proceedings of the eighteenth annual ACM-SIAM symposium on Discrete algorithms
Aggregation of partial rankings, p-ratings and top-m lists
SODA '07 Proceedings of the eighteenth annual ACM-SIAM symposium on Discrete algorithms
A rigorous analysis of population stratification with limited data
SODA '07 Proceedings of the eighteenth annual ACM-SIAM symposium on Discrete algorithms
Feedback arc set problem in bipartite tournaments
Information Processing Letters
Noisy sorting without resampling
Proceedings of the nineteenth annual ACM-SIAM symposium on Discrete algorithms
A graph-theoretic approach to webpage segmentation
Proceedings of the 17th international conference on World Wide Web
Consensus Genetic Maps as Median Orders from Inconsistent Sources
IEEE/ACM Transactions on Computational Biology and Bioinformatics (TCBB)
A discriminative framework for clustering via similarity functions
STOC '08 Proceedings of the fortieth annual ACM symposium on Theory of computing
On the Approximation of Correlation Clustering and Consensus Clustering
Journal of Computer and System Sciences
Discovering bucket orders from full rankings
Proceedings of the 2008 ACM SIGMOD international conference on Management of data
ACM SIGACT News
Aggregating inconsistent information: Ranking and clustering
Journal of the ACM (JACM)
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Proceedings of the 9th workshop on Mobile computing systems and applications
A note on the inapproximability of correlation clustering
Information Processing Letters
A Short Introduction to Computational Social Choice
SOFSEM '07 Proceedings of the 33rd conference on Current Trends in Theory and Practice of Computer Science
Fixed-Parameter Algorithms for Kemeny Scores
AAIM '08 Proceedings of the 4th international conference on Algorithmic Aspects in Information and Management
A Local-Search 2-Approximation for 2-Correlation-Clustering
ESA '08 Proceedings of the 16th annual European symposium on Algorithms
Finding Total and Partial Orders from Data for Seriation
DS '08 Proceedings of the 11th International Conference on Discovery Science
Developing Preference Band Model to Manage Collective Preferences
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On the approximability of Dodgson and Young elections
SODA '09 Proceedings of the twentieth Annual ACM-SIAM Symposium on Discrete Algorithms
Proceedings of the Second ACM International Conference on Web Search and Data Mining
A more effective linear kernelization for cluster editing
Theoretical Computer Science
A randomized approximation algorithm for computing bucket orders
Information Processing Letters
Ranking tournaments: Local search and a new algorithm
Journal of Experimental Algorithmics (JEA)
A note on generalized rank aggregation
Information Processing Letters
Linear Programming Based Approximation Algorithms for Feedback Set Problems in Bipartite Tournaments
TAMC '09 Proceedings of the 6th Annual Conference on Theory and Applications of Models of Computation
Correlation Clustering Revisited: The "True" Cost of Error Minimization Problems
ICALP '09 Proceedings of the 36th International Colloquium on Automata, Languages and Programming: Part I
ICALP '09 Proceedings of the 36th International Colloquium on Automata, Languages and Programming: Part I
Computing slater rankings using similarities among candidates
AAAI'06 Proceedings of the 21st national conference on Artificial intelligence - Volume 1
Improved bounds for computing Kemeny rankings
AAAI'06 Proceedings of the 21st national conference on Artificial intelligence - Volume 1
Nonexistence of voting rules that are usually hard to manipulate
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The VLDB Journal — The International Journal on Very Large Data Bases
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Feedback arc set problem in bipartite tournaments
TAMC'07 Proceedings of the 4th international conference on Theory and applications of models of computation
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Proceedings of the 19th international conference on World wide web
Deterministic algorithms for rank aggregation and other ranking and clustering problems
WAOA'07 Proceedings of the 5th international conference on Approximation and online algorithms
Improved algorithms for bicluster editing
TAMC'08 Proceedings of the 5th international conference on Theory and applications of models of computation
Ordering by weighted number of wins gives a good ranking for weighted tournaments
ACM Transactions on Algorithms (TALG)
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Information Processing Letters
Improved consensus clustering via linear programming
ACSC '10 Proceedings of the Thirty-Third Australasian Conferenc on Computer Science - Volume 102
Correlation clustering with noisy input
SODA '10 Proceedings of the twenty-first annual ACM-SIAM symposium on Discrete Algorithms
PKAW'10 Proceedings of the 11th international conference on Knowledge management and acquisition for smart systems and services
Effective rank aggregation for metasearching
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Annals of Mathematics and Artificial Intelligence
Rank aggregation via nuclear norm minimization
Proceedings of the 17th ACM SIGKDD international conference on Knowledge discovery and data mining
Clustering Algorithms for Chains
The Journal of Machine Learning Research
Kernels for feedback arc set in tournaments
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Clustering with local restrictions
ICALP'11 Proceedings of the 38th international colloquim conference on Automata, languages and programming - Volume Part I
Using medians to generate consensus rankings for biological data
SSDBM'11 Proceedings of the 23rd international conference on Scientific and statistical database management
Comparing and aggregating partially resolved trees
Theoretical Computer Science
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WIRN'05 Proceedings of the 16th Italian conference on Neural Nets
GD'05 Proceedings of the 13th international conference on Graph Drawing
Correlation clustering and consensus clustering
ISAAC'05 Proceedings of the 16th international conference on Algorithms and Computation
Fixed-parameter tractability results for feedback set problems in tournaments
CIAC'06 Proceedings of the 6th Italian conference on Algorithms and Complexity
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SSVM'11 Proceedings of the Third international conference on Scale Space and Variational Methods in Computer Vision
A polynomial kernel for feedback arc set on bipartite tournaments
ISAAC'11 Proceedings of the 22nd international conference on Algorithms and Computation
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Synthesis ranking with critic resonance
Proceedings of the 3rd Annual ACM Web Science Conference
A more effective linear kernelization for Cluster Editing
ESCAPE'07 Proceedings of the First international conference on Combinatorics, Algorithms, Probabilistic and Experimental Methodologies
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WINE'12 Proceedings of the 8th international conference on Internet and Network Economics
Quasi-hamiltonian paths in semicomplete multipartite digraphs
Discrete Applied Mathematics
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Proceedings of the 2013 international conference on Autonomous agents and multi-agent systems
On the approximability of maximum and minimum edge clique partition problems
CATS '06 Proceedings of the Twelfth Computing: The Australasian Theory Symposium - Volume 51
Correlation clustering with stochastic labellings
SIMBAD'13 Proceedings of the Second international conference on Similarity-Based Pattern Recognition
Socially desirable approximations for dodgson’s voting rule
ACM Transactions on Algorithms (TALG)
A Polynomial Kernel for Feedback Arc Set on Bipartite Tournaments
Theory of Computing Systems
A trust-augmented voting scheme for collaborative privacy management
Journal of Computer Security - STM'10
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We address optimization problems in which we are given contradictory pieces of input information and the goal is to find a globally consistent solution that minimizes the number of disagreements with the respective inputs. Specifically, the problems we address are rank aggregation, the feedback arc set problem on tournaments, and correlation and consensus clustering. We show that for all these problems (and various weighted versions of them), we can obtain improved approximation factors using essentially the same remarkably simple algorithm. Additionally, we almost settle a long-standing conjecture of Bang-Jensen and Thomassen and show that unless NP⊆BPP, there is no polynomial time algorithm for the problem of minimum feedback arc set in tournaments.