About the Authors

Bowen Yan

yan@cs.bris.ac.uk

Affiliation Department of Computer Science, University of Bristol, Bristol, United Kingdom

Steve Gregory

Affiliation Department of Computer Science, University of Bristol, Bristol, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: BY SG. Performed the experiments: BY SG. Analyzed the data: BY SG. Contributed reagents/materials/analysis tools: BY SG. Wrote the paper: BY SG.