About the Authors

Ian McLoughlin

Contributed equally to this work with: Ian McLoughlin, Haomin Zhang, Zhipeng Xie

Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Software, Supervision, Visualization, Writing – original draft, Writing – review & editing

ivm@kent.ac.uk

Affiliations School of Computing, The University of Kent, Medway, Kent, United Kingdom, National Engineering Laboratory of Speech and Language Information Processing, The University of Science and Technology of China, Hefei, PR China

Haomin Zhang

Contributed equally to this work with: Ian McLoughlin, Haomin Zhang, Zhipeng Xie

Roles Investigation, Methodology, Software, Visualization, Writing – original draft

Affiliation National Engineering Laboratory of Speech and Language Information Processing, The University of Science and Technology of China, Hefei, PR China

Zhipeng Xie

Contributed equally to this work with: Ian McLoughlin, Haomin Zhang, Zhipeng Xie

Roles Investigation, Methodology, Software

Affiliation National Engineering Laboratory of Speech and Language Information Processing, The University of Science and Technology of China, Hefei, PR China

Yan Song

Roles Formal analysis, Funding acquisition, Investigation, Project administration, Writing – review & editing

‡ These authors also contributed equally to this work.

Affiliation National Engineering Laboratory of Speech and Language Information Processing, The University of Science and Technology of China, Hefei, PR China

Wei Xiao

Roles Conceptualization, Formal analysis

‡ These authors also contributed equally to this work.

Affiliation European Research Center, Huawei Technologies Duesseldorf GmbH, Munich, Germany

Huy Phan

Roles Formal analysis, Validation, Visualization

‡ These authors also contributed equally to this work.

Affiliation The Institute for Signal Processing, University of Lübeck, Lübeck, Germany

Competing Interests

We have the following interests: Wei Xiao is employed by Huawei Technologies Duesseldorf GmbH, and has been contributing time, effort and practical advice to this research in an effort to help ensure its eventual success. While he is employed by the same company as the funder, he is a coauthor on the basis of his defined intellectual input to this work in the area of signal processing methods, analytical techniques specifically related to feature dimension reduction. There are no patents, products in development or marketed products to declare. This does not alter our adherence to all the PLOS ONE policies on sharing data and materials, as detailed online in the guide for authors.