Information Systems Group

― Knowledge Representation and Reasoning

Zhe Wang

Research Assistant

Biography

Currently, I am a Research Assistant in the University of Oxford. I joined the Information System Group led by Prof. Georg Gottlob and Prof. Ian Horrocks in 2011 working in the ExODA project, where I investigate technologies of query answering and optimisations for expressive ontology-based data access. The results obtained so far concern the application of so-called acyclicity conditions for ontology-based query answering with forward chaining. I am also involved in the support of the HermiT OWL 2 reasoner, dealing with the user-reported issues and inquire.

I obtained my PhD degree in 2011 at Griffith University, Australia, under the supervision of A/Prof. Kewen Wang, Prof. Rodney Topor, and Prof. Grigoris Antoniou (external). In my doctoral research work, I developed mechanisms and tools to support modifications of ontologies based on description logics. In particular, I have been working on ontology revision, merging and module extraction.

My research interests are in knowledge representation and reasoning, ontology-based technologies, and semantic web.

Recent Publications

Eliminating concepts and roles from ontologies in expressive description logics. Kewen Wang, Zhe Wang, Rodney Topor, Jeff Z Pan, Grigoris Antoniou. Computational Intelligence, 2012 (in press).

Acyclicity Conditions and their Application to Query Answering in Description Logics. Bernardo Cuenca Grau, Ian Horrocks, Markus Krötzsch, Clemens Kupke, Despoina Magka, Boris Motik and Zhe Wang. In Proceedings of the 13th International Conference on Principles of Knowledge Representation and Reasoning (KR 2012).

The HermiT OWL Reasoner. Ian Horrocks, Boris Motik and Zhe Wang. In Proceedings of IJCAR-ORE workshop 2012.

Name

Zhe Wang

Posts

Research Assistant

Projects

ExODA

News

In-Use Track Best Student Paper in ISWC'19>

The paper "Knowledge Graph Embedding for Ecotoxicological Effect Prediction" gets In-Use Track Best Student Paper in ISWC'19. The work was done when the first student author Erik B. Myklebust was visiting the KRR group, with Jiaoyan Chen.

3 Paper accepted in AAAI'18

Three papers co-authored by the KRR group have been accepted in AAAI'18:
- "Stream Reasoning in Temporal Datalog" by A. Ronca, M. Kaminski, B. Cuenca Grau, B. Motik, and I. Horrocks;
- "Optimised Maintenance of Datalog Materialisations" by P. Hu, B. Motik, and I. Horrocks; and
- "Goal-Driven Query Answering for Existential Rules with Equality" by M. Benedikt, B. Motik, and E. Tsamoura.

Professor Ian Horrocks is a new honorary doctorate at University of Oslo, Faculty of Mathematics and Natural Sciences

Professor Ian Horrocks received an honorary doctorate from the University of Oslo.

Best paper award at IJCAI'17

The paper entitled "Foundations of Declarative Data Analysis Using Limit Datalog Programs" and authored by M. Kaminski, B. Cuenca Grau, B. Motik, E. V. Kostylev, and I. Horrocks received the best paper award at the 26th International Joint Conference on Artificial Intelligence (IJCAI'17).

3 papers accepted in IJCAI'17

Three papers co-authored by the KRR group have been accepted in IJCAI'17:
- "Query Reformulation: Theory and Practice" by M. Benedikt, E. V. Kostylev, F. Mogavero, and E. Tsamoura;
- "Foundations of Declarative Data Analysis Using Limit Datalog Programs" by M. Kaminski, B. Cuenca Grau, B. Motik, E. V. Kostylev, and I. Horrocks; and
- "The Bag Semantics of Ontology-Based Data Access" by C. Nikolaou, E. V. Kostylev, G. Konstantinidis, M. Kaminski, B. Cuenca Grau, and I. Horrocks.

Paper accepted in PODS'17

The paper entitled "Benchmarking the chase" authored by Michael Benedikt, George Konstantinidis, Giansalvatore Mecca, Boris Motik, Paolo Papotti, Donatello Santoro, and Efthymia Tsamoura has been accepted in PODS'17.

Andrew Bate defends his PhD Thesis

Andrew Bate has successfully defended his PhD Thesis on Consequence Based Reasoning. Congratulations to Dr. Andrew Bate!

Best applications paper award at ISWC'16

Our paper entitled "Semantic Technologies for Data Analysis in Health Care" received the Best Applications Paper Award at the International Semantic Web Conference (ISWC 2016).

4 papers accepted in ISWC'16

Four papers authored by the KRR group have been accepted in the International Semantic Web Conference (ISWC 2016).

Best paper award at ICDT'16

Mark Kaminski and Egor Kostylev received the best paper award at ICDT 2016 for their paper entitled "Beyond Well-Designed SPARQL".