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Research


Mathias Niepert, PhD

Computer Science & Engineering
University of Washington
Seattle, USA

mniepert at cs dot washington dot edu

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Publications
Teaching
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MSc, PhD in Computer Science, Indiana University Bloomington
Advisor: Dirk Van Gucht

I am a postdoctoral research associate with Pedro Domingos at the University of Washington in Seattle. From 2009-2012 I was also a member of the Data and Web Science Research Group at the University of Mannheim.

My co-authors and I were fortunate enough to win awards at international conferences such as UAI, IJCNLP, and ESWC. I am the principle investigator of a Google faculty research award and a bilateral DFG-NEH research award. I am also co-founder of the Indiana Philosophy Ontology project. My research interests include probabilistic graphical models, statistical relational learning, digital libraries and, more broadly, the extraction, integration, and manipulation of structured data.

Google scholar

News

Honors and Awards

Research Grants

  • Principal Investigator: Distributed Particle-Based Inference in Probabilistic Knowledge Bases (with co-PI Heiner Stuckenschmidt), Google Faculty Research Award, USD 60,000, 2012-2013
  • Principal Investigator: LinkedHumanities - Linking and Populating the Digital Humanities (with second PI Colin Allen), DFG/NEH Bilateral Research Grant, USD 350,000, 2012-2014

Selected Publications

  • Mathias Niepert and Pedro Domingos. Exchangeable Variable Models. In Proceedings of the 31st International Conference on Machine Learning (ICML), Beijing, China, 2014.
  • Mathias Niepert and Guy Van den Broeck. Tractability through Exchangeability: A New Perspective on Lifted Probabilistic Inference. In Proceedings of the 28th Conference on Artificial Intelligence (AAAI), Quebec City, Canada, 2014.
  • Mathias Niepert. Symmetry-Aware Marginal Density Estimation. In Proceedings of the 27th Conference on Artificial Intelligence (AAAI), Bellevue, Washington, USA, 2013. [paper][code]
  • Mathias Niepert, Bassem Sayrafi, Marc Gyssens, and Dirk Van Gucht. The Conditional Independence Implication Problem: A Lattice-Theoretic Approach. Artificial Intelligence 202:29-51, 2013. [article]
  • Mathias Niepert. Statistical Relational Data Integration for Information Extraction. Reasoning Web, Springer, Heidelberg, 2013.
  • Daniel Fleischhacker, Christian Meilicke, Johanna Voelker, and Mathias Niepert. Computing Incoherence Explanations for Learned Ontologies. In Proceedings of the 7th International Conference on Web Reasoning and Rule Systems, Mannheim, Germany, 2013.
  • Arnab Dutta, Mathias Niepert, Christian Meilicke, and Simone Ponzetto. Integrating Open and Closed Information Extraction - Challanges and First Steps. In Proceedings of the NLP & DBpedia workshop co-located with ISWC, Sydney, Australia, 2013.
  • Jan Noessner, Mathias Niepert, and Heiner Stuckenschmidt. RockIt: Exploiting Parallelism and Symmetry for MAP Inference in Statistical Relational Models. In Proceedings of the 27th Conference on Artificial Intelligence (AAAI), Bellevue, Washington, USA, 2013. [paper][code]
  • Mathias Niepert. Lifted Probabilistic Inference: An MCMC Perspective. In Proceedings of the 2nd International Workshop on Statistical Relational AI (StaR AI), Catalina Island, USA, 2012. [paper][code]
  • Mathias Niepert. Markov Chains on Orbits of Permutation Groups. In Proceedings of the 28th Conference on Uncertainty in Artificial Intelligence (UAI), Catalina Island, USA, 2012. [paper][code]
  • Mathias Niepert, Christian Meilicke, and Heiner Stuckenschmidt. Towards Distributed MCMC Inference in Probabilistic Knowledge Bases. NAACL-HLT Joint Workshop on Automatic Knowledge Base Construction and Web-scale Knowledge Extraction (AKBC-WEKEX), Montreal, Canada, 2012. [paper]
  • Henrik Leopold, Mathias Niepert, Matthias Weidlich, Jan Mendling, Remco Dijkman, and Heiner Stuckenschmidt. Probabilistic Optimization of Semantic Process Model Matching. In Proceedings of the 10th International Conference on Business Process Management (BPM), Tallinn, Estonia, 2012.
  • Rim Helaoui, Daniele Riboni, Mathias Niepert, Claudio Bettini and Heiner Stuckenschmidt. Towards Activity Recognition Using Probabilistic Description Logics. In Proceedings of the AAAI workshops, Toronto, Canada, 2012.
  • Mathias Niepert. Reasoning under Uncertainty with Log-Linear Description Logics. In Proceedings of the 7th International Workshop on Uncertain Reasoning for the Semantic Web (URSW) at ISWC, Bonn, Germany, 2011. [paper][code]
  • Caecilia Zirn, Mathias Niepert, Heiner Stuckenschmidt, and Michael Strube. Fine-Grained Sentiment Analysis with Structural Features. In Proceedings of the 5th International Joint Conference on Natural Language Processing (IJCNLP), Chiang Mai, Thailand, 2011. (best paper award) [paper]
  • Mathias Niepert, Jan Noessner, and Heiner Stuckenschmidt. Log-Linear Description Logics. In Proceedings of the 22nd International Joint Conference on Artificial Intelligence (IJCAI), Barcelona, Spain, 2011. (selected for oral presentation) [paper][code]
  • Jan Noessner, Mathias Niepert and Heiner Stuckenschmidt. Coherent Top-k Ontology Alignment for OWL EL. In Proceedings of the the 5th International Conference on Scalable Uncertainty Management (SUM), Dayton, Ohio, Springer-Verlag, 2011. [paper]
  • Rim Helaoui, Mathias Niepert and Heiner Stuckenschmidt. Recognizing Interleaved and Concurrent Activities Using Qualitative and Quantitative Temporal Relationships. Pervasive and Mobile Computing, Volume 7, Issue 6, Elsevier, 2011. [paper]
  • Jan Noessner and Mathias Niepert. ELOG: A Probabilistic Reasoner for OWL EL. In Proceedings of the the 5th International Conference on Web Reasoning and Rule Systems (RR), Galway, Ireland, Springer-Verlag, 2011. [paper]
  • Mathias Niepert, Jan Noessner, Christian Meilicke, and Heiner Stuckenschmidt. Probabilistic-Logical Web Data Integration. In Reasoning Web: 7th International Summer School 2011, Galway, Ireland, Springer-Verlag, 2011. [paper]
  • Johanna Voelker and Mathias Niepert. Statistical Schema Induction. In Proceedings of the 8th Extended Semantic Web Conference (ESWC), Heraklion, Greece, Springer-Verlag, 2011. [paper]
  • Rim Helaoui, Mathias Niepert, and Heiner Stuckenschmidt. Recognizing Interleaved and Concurrent Activities: A Statistical Relational Approach. In Proceedings of the 9th IEEE International Conference on Pervasive Computing and Communications (PerCom), Seattle, Washington, 2011. [paper]
  • Mathias Niepert. A Delayed Column Generation Strategy for Exact k-Bounded MAP Inference in Markov Logic Networks. In Proceedings of the 26th Conference on Uncertainty in Artificial Intelligence (UAI), Catalina Island, California, AUAI Press, 2010. [paper]
  • Mathias Niepert, Christian Meilicke, and Heiner Stuckenschmidt. A Probabilistic-Logical Framework for Ontology Matching. In Proceedings of the 24th AAAI Conference on Artificial Intelligence (AAAI), Atlanta, Georgia, AAAI Press, 2010. (selected as exceptional top 4% paper) [paper][poster]
  • Jan Noessner and Mathias Niepert. CODI: Combinatorial Optimization for Data Integration. In Proceedings of the 5th International Workshop on Ontology Matching (OM), Shanghai, China, 2010. [paper]
  • Kai Eckert, Mathias Niepert, Christof Niemann, Cameron Buckner, Colin Allen, and Heiner Stuckenschmidt. Crowdsourcing the Assembly of Concept Hierarchies. In Proceedings of the 10th ACM/IEEE Joint Conference on Digital Libraries (JCDL), Gold Coast, Australia, ACM Press, 2010. [paper]
  • Nikolas Schmitt, Mathias Niepert, and Heiner Stuckenschmidt. BRAMBLE: A Web-based Framework for Interactive RDF-Graph Visualisation. International Semantic Web Conference (ISWC) 2010. (demo paper)
  • Mathias Niepert. Towards Collaboratively Learning and Populating Ontologies for the Social-Semantic Web. SIGWEB Newsletter, Spring 2010, ACM Press.
  • Jan Noessner, Mathias Niepert, Christian Meilicke, and Heiner Stuckenschmidt. Leveraging Terminological Structure for Object Reconciliation. In Proceedings of the 7th Extended Semantic Web Conference (ESWC), Heraklion, Greece, Springer-Verlag, 2010. (best paper award) [paper]
  • Mathias Niepert, Dirk Van Gucht, and Marc Gyssens. Logical and Algorithmic Properties of Stable Conditional Independence. International Journal of Approximate Reasoning, Volume 51, Issue 5, pages 531-543, 2010. [preprint]
  • Rim Helaoui, Mathias Niepert, and Heiner Stuckenschmidt. A Statistical-Relational Activity Recognition Framework for Ambient Assisted Living Systems. In Proceedings of the International Symposium on Ambient Intelligence, Guimar\E3es, Portugal, Springer-Verlag, 2010. [paper]
  • Cameron Buckner, Mathias Niepert, and Colin Allen. From Encyclopedia to Ontology: Toward A Dynamic Representation of the Discipline of Philosophy. Synthese, Springer-Verlag, 2010. [article]
  • Robert Meusel, Mathias Niepert, Kai Eckert, and Heiner Stuckenschmidt. Thesaurus Extension Using Web Search Engines. In Proceedings of the 12th International Conference on Asia-Pacific Digital Libraries (ICADL), Gold Coast, Australia, Springer-Verlag, 2010. [paper]
  • Mathias Niepert. Logical Inference Algorithms and Matrix Representations for Probabilistic Conditional Independence. In Proceedings of the 25th Conference on Uncertainty in Artificial Intelligence (UAI), Montreal, Canada, pages 428-435, AUAI Press, 2009. [paper]
  • Mathias Niepert, Cameron Buckner, and Colin Allen. Working the Crowd: Design Principles and Early Lessons from the Social-Semantic Web. In Proceedings of the Workshop on Web 3.0: Merging Semantic Web and Social Web - (SW)^2  at ACM Hypertext, Turin, Italy, 2009. [paper]
  • Mathias Niepert. A Unifying Framework for Disjunctive Data Constraints with Applications to Reasoning under Uncertainty. PhD thesis, Indiana University, June 2009. [thesis]
  • Mathias Niepert and Dirk Van Gucht. Logical Properties of Stable Conditional Independence. In Proceedings of the 4th European Workshop on Probabilistic Graphical Models (PGM), Hirtshals, Denmark, pages 225-232, 2008. (selected for plenary presentation) [paper]
  • Mathias Niepert, Dirk Van Gucht, and Marc Gyssens. On the Conditional Independence Implication Problem: A Lattice-Theoretic Approach. In Proceedings of the 24th Conference on Uncertainty in Artificial Intelligence (UAI), Helsinki, Finland, pages 435-443, AUAI Press, 2008. (best student paper runner-up award) [paper]
  • Mathias Niepert, Cameron Buckner, Jaimie Murdock, and Colin Allen. InPhO: A System for Collaboratively Populating and Extending a Dynamic Ontology. (demo abstract) In Proceedings of the 8th ACM/IEEE Joint Conference on Digital Libraries (JCDL), Pittsburgh, Pennsylvania, page 429, ACM Press, 2008. [abstract] [poster]
  • Colin Allen, Cameron Buckner, and Mathias Niepert. The World is Not Flat: Expertise and InPhO. Selected papers from the Ninth Annual WebWise Conference. First Monday, Volume 13, Number 8, 2008. [article]
  • Mathias Niepert, Cameron Buckner, and Colin Allen. Answer Set Programming on Expert Feedback to Populate and Extend Dynamic Ontologies. In Proceedings of the 21st International FLAIRS Conference, Coconut Grove, Florida, pages 500-505, AAAI Press, 2008. [paper]
  • Cameron Buckner, Mathias Niepert, and Colin Allen. InPhO: The Indiana Philosophy Ontology. APA Newsletter on Philosophy and Computers, Volume 7, Number 1, pages 26-28, 2007. [newsletter]
  • Mathias Niepert, Cameron Buckner, and Colin Allen. A Dynamic Ontology for a Dynamic Reference Work. In Proceedings of the 7th ACM/IEEE Joint Conference on Digital Libraries (JCDL), Vancouver, British Columbia, pages 288-297, ACM Press, 2007. [paper]
 

Selected Past & Current Advisees

PhD: Rim Helaoui, Jan Noessner, Arnab Dutta
Master: Christian Brumm (Google), David Grosshans (Daimler), Josef Vataman (CTO about-local.com), Marina Maznikova
Bachelor: Nikolas Schmitt (TU Darmstadt), Mengbing Guo

Teaching

  • Lecturer: The 9th Reasoning Web Summer School, Mannheim, Germany, Summer 2013
  • Lecturer: The 7th Reasoning Web Summer School, Galway, Ireland, Summer 2011
  • Instructor: Artificial Intelligence meets Economics, University of Mannheim, Spring 2011
  • Instructor: Artificial Intelligence, University of Mannheim, Fall 2010, Fall 2011, Fall 2012
  • Instructor: Algorithms and Data Structures, University of Mannheim, Fall 2009, Spring 2012
  • Instructor: From Probability to Logic and Back: Markov Logic and its Applications to Computational Linguistics and the Semantic Web, 4th North American Summer School in Logic, Language, and Information, Summer 2010
  • Co-Instructor: Introduction to Computer Science 2 (~100 students), University of Mannheim, Spring 2010, Spring 2011, Spring 2012 (lectures were held in German)
  • Co-Instructor: Data and Knowledge Engineering Seminar, University of Mannheim, Spring 2010
  • TA: Discrete Mathematics, Indiana University, Spring 2008
  • TA: Advanced Database Concepts, Indiana University, Fall 2007
  • TA: Algorithm Design and Analysis, Indiana University, Spring 2006
  • TA: Theory of Computation, Indiana University, Fall 2005
 

Service

Senior PC: IJCAI 2013
PC: UAI 2014, ISWC 2009,2010; ESWC 2010, 2011 PhD Symposium; UniDL 2010; AAAI 2011-2014; ECAI 2012,2014, ECML-PKDD 2013, StarAi 2013
Reviewer: PODS, WWW, AAAI, ECAI, ESWC, ISWC, FOIKS, UniDL, STAIRS, Journal of Artificial Intelligence Research, Machine Learning Journal, Journal of Web Semantics, Journal of Data Semantics
 

Software


Geeky Facts

My Erdös number is at most 4:
P. Erdös <> N. Alon <> D. Suciu <> D. Van Gucht <> M. Niepert or
P. Erdös <> A.R. Blass <> J. Van den Bussche <> M. Gyssens <> M. Niepert

My academic genealogy:
Gottfried Wilhelm Leibniz - Jacob Bernoulli - Johann Bernoulli - Leonhard Euler <> Joseph Louis Lagrange - Simeon Denis Poisson - Michel Chasles - Hubert Anson Newton - Eliakim Hastings Moore - Oswald Veblen - Alonzo Church - Hartley Rogers, Jr. - Patrick Carl Fischer - Dirk Van Gucht - Mathias Niepert
mind the gap