Flinders University
Dr Trent Lewis
Dr
Trent
Lewis
Flinders University
http://www.flinders.edu.au/people/trent.lewis
Trent interacting with his virtual-self
| Position/s: | Postdoctoral Reserach Fellow School of Computer Science, Engineering and Mathematics |
| Phone: | +61 8 82013867 |
| Email: | trent.lewis@flinders.edu.au |
| Location: | Information, Science & Technology (369) |
| Postal address: | GPO Box 2100, Adelaide 5001, South Australia |
Biography
Trent is a cognitive scientist who has broad interests in human and machine learning. Primarily a computer scientist, Trent completed a PhD in 2005 in the area of audio-visual speech processing. His thesis involved research in dynamic weighting, classifier combination, confidence estimation and combination, and the use of linguistic distinctive features as units for fusion.
Trent is currently employed as a postdoctoral research fellow on the Thinking Head project. A multi-instituional project, Trent is responsible for the development of the audio-visual sensing capacities of the Head. Trent is now also involved in a Flinder's spin out company, CleverMe, to commercialize "virtual pal" technology.
Trent relishes cross disciplinary research, the Thinking Head project a prime example, and works with engineers, neurologists, and biologists as part of an EEG research team investigating the neural correlates of mental diseases and the effect EMG has on EEG using signal processing and data visualisation techniques.
Qualifications
- Ph.D., Flinders University (2005)
- B.Sc.(Hons) in Computer Science, Flinders University (2001)
- B.Sc. in Cognitive Science, Flinders University (2000)
Teaching
Research and consultancy
Research interests
- Audio-Visual Speech Processing
- Machine Learning
- Mulit-modal Fusion
- Classifier Fusion and Confidence Estimation
- Embodied Conversational Agents
Publications
Book chapters
Anderson, T.A., Chen, Z., Wen, Y., Milne, M.K., Atyabi, A., Treharne, K., Matsumoto, T., Jia, X., Luerssen, M.H., Lewis, T.W., et al., 2012. Thinking Head MulSeMedia: A Storytelling Environment for Embodied Language Learning. In Multiple Sensorial Media Advances and Applications: New Developments in MulSeMedia. Hershey, Pennsylvania: IGI Global, pp. 182-203.
Milne, M.K., Luerssen, M.H., Lewis, T.W., Leibbrandt, R.E., & Powers, D.M., 2011. Designing and Evaluating Interactive Agents as Social Skills Tutors for Children with Autism Spectrum Disorder. In Conversational Agents and Natural Language Interaction: Techniques and Effective Practices. Spain: IGI Global, pp. 23-48.
Milne, M.K., Luerssen, M.H., Leibbrandt, R.E., Lewis, T.W., & Powers, D.M., 2011. Embodied Conversational Agents for Education in Autism. In A Comprehensive Book on Autism Spectrum Disorders. Rijeka, Croatia: InTech Open, pp. 387-412.
Refereed journal articles
Fitzgibbon, S.P., Lewis, T.W., Powers, D.M., Whitham, E.M., Willoughby, J.O., & Pope, K., 2012. Surface Laplacian of Central Scalp Electrical Signals is Insensitive to Muscle Contamination. IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING.
Whitham, E.M., Fitzgibbon, S.P., Lewis, T.W., Pope, K., DeLosAngeles, D., Clark, C.R., Lillie, P., Hardy, A., Gandevia, S.G., & Willoughby, J.O., 2011. Visual experiences during paralysis. Frontiers in Human Neuroscience, 5(160).
Pope, K., Fitzgibbon, S.P., Lewis, T.W., Whitham, E.M., & Willoughby, J.O., 2009. Relation of gamma oscillations in scalp recordings to muscular activity. Brain Topography, 22(1), 13-17.
Broberg, I.M., Pope, K., Lewis, T.W., Olsson, T., Nilsson, M., & Willoughby, J.O., 2008. Cell swelling precedes seizures induced by inhibition of astrocytic metabolism. Epilepsy Research, 80(2-3), 132-141.
Whitham, E.M., Lewis, T.W., Pope, K., Fitzgibbon, S.P., Clark, C.R., Loveless, S.J., DeLosAngeles, D., Wallace, A.K., Broberg, I.M., & Willoughby, J.O., 2008. Thinking activates EMG in scalp electrical recordings. Clinical Neurophysiology, 119, 1166-1175.
Whitham, E.M., Pope, K., Fitzgibbon, S.P., Lewis, T.W., Clark, C.R., Loveless, S.J., Broberg, I.M., Wallace, A.K., DeLosAngeles, D., Lillie, P., et al., 2007. Scalp electrical recording during paralysis: Quantitative evidence that EEG frequencies above 20 Hz are contaminated by EMG. Clinical Neurophysiology, 118(8), 1877-1888.
Lewis, T.W. & Powers, D.M., 2003. Audio-Visual Speech Recognition using Red Exclusion an Neural Networks. Journal of Research and Practice in Information Technology, 35(1), 41-64.
Book chapters
Anderson, T.A., Chen, Z., Wen, Y., Milne, M.K., Atyabi, A., Treharne, K., Matsumoto, T., Jia, X., Luerssen, M.H., Lewis, T.W., et al., 2012. Thinking Head MulSeMedia: A Storytelling Environment for Embodied Language Learning. In Multiple Sensorial Media Advances and Applications: New Developments in MulSeMedia. Hershey, Pennsylvania: IGI Global, pp. 182-203.
Milne, M.K., Luerssen, M.H., Lewis, T.W., Leibbrandt, R.E., & Powers, D.M., 2011. Designing and Evaluating Interactive Agents as Social Skills Tutors for Children with Autism Spectrum Disorder. In Conversational Agents and Natural Language Interaction: Techniques and Effective Practices. Spain: IGI Global, pp. 23-48.
Milne, M.K., Luerssen, M.H., Leibbrandt, R.E., Lewis, T.W., & Powers, D.M., 2011. Embodied Conversational Agents for Education in Autism. In A Comprehensive Book on Autism Spectrum Disorders. Rijeka, Croatia: InTech Open, pp. 387-412.
Refereed journal articles
Fitzgibbon, S.P., Lewis, T.W., Powers, D.M., Whitham, E.M., Willoughby, J.O., & Pope, K., 2012. Surface Laplacian of Central Scalp Electrical Signals is Insensitive to Muscle Contamination. IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING.
Whitham, E.M., Fitzgibbon, S.P., Lewis, T.W., Pope, K., DeLosAngeles, D., Clark, C.R., Lillie, P., Hardy, A., Gandevia, S.G., & Willoughby, J.O., 2011. Visual experiences during paralysis. Frontiers in Human Neuroscience, 5(160).
Pope, K., Fitzgibbon, S.P., Lewis, T.W., Whitham, E.M., & Willoughby, J.O., 2009. Relation of gamma oscillations in scalp recordings to muscular activity. Brain Topography, 22(1), 13-17.
Whitham, E.M., Lewis, T.W., Pope, K., Fitzgibbon, S.P., Clark, C.R., Loveless, S.J., DeLosAngeles, D., Wallace, A.K., Broberg, I.M., & Willoughby, J.O., 2008. Thinking activates EMG in scalp electrical recordings. Clinical Neurophysiology, 119, 1166-1175.
Broberg, I.M., Pope, K., Lewis, T.W., Olsson, T., Nilsson, M., & Willoughby, J.O., 2008. Cell swelling precedes seizures induced by inhibition of astrocytic metabolism. Epilepsy Research, 80(2-3), 132-141.
Whitham, E.M., Pope, K., Fitzgibbon, S.P., Lewis, T.W., Clark, C.R., Loveless, S.J., Broberg, I.M., Wallace, A.K., DeLosAngeles, D., Lillie, P., et al., 2007. Scalp electrical recording during paralysis: Quantitative evidence that EEG frequencies above 20 Hz are contaminated by EMG. Clinical Neurophysiology, 118(8), 1877-1888.
Lewis, T.W. & Powers, D.M., 2003. Audio-Visual Speech Recognition using Red Exclusion an Neural Networks. Journal of Research and Practice in Information Technology, 35(1), 41-64.
Refereed conference papers
Cottrell, J., Fitzgibbon, S.P., Lewis, T.W., & Powers, D.M., 2012. Investigating a Gaze-Tracking Brain Computer Interface Concept Using Steady State Visually Evoked Potentials. Spring World Congress on Engineering and Technology.
Ali, H.B., Powers, D.M., Leibbrandt, R.E., & Lewis, T.W., 2011. Comparison of Region Based and Weighted Principal Component Analysis and Locally Salient ICA in Terms of Facial Expression Recognition. Software Engineering, Artificial Intelligence, Networking and Parallel/Distributed Computing 2011, 368, 81-89.
Burnham, D.K., Estival, D., Fazio, S., Viethen, J., Cox, F.M., Dale, R., Cassidy, S., Epps, J.R., Togneri, R., Wagner, M., et al., 2011. Building an audio-visual corpus of Australian English: large corpus collection with an economical portable and replicable Black Box. Interspeech 2011, Proceedings of the 12th Annual Conference of the International Speech Communication Association, 841-844.
Wagner, M., Tran, D., Togneri, R., Rose, P., Powers, D.M., Onslow, M., Loakes, D.E., Lewis, T.W., Kuratate, T., Kinoshita, Y., et al., 2010. The Big Australian Speech Corpus (The Big ASC). Proceedings of the 13th Australasian International Conference on Speech Science and Technology, 166-170.
Powers, D.M., Luerssen, M.H., Lewis, T.W., Leibbrandt, R.E., Milne, M.K., Pashalis, J., & Treharne, K., 2010. MANA for the Ageing. Proceedings of the 2010 Workshop on Companionable Dialogue Systems, ACL 2010, 7-12.
Newman, W., Franzel, D., Matsumoto, T., Leibbrandt, R.E., Lewis, T.W., Luerssen, M.H., & Powers, D.M., 2010. Hybrid World Object Tracking For A Virtual Teaching Agent. Proceedings of the International Joint Conference on Neural Networks 2010, 2244-2252.
Luerssen, M.H., Lewis, T.W., & Powers, D.M., 2010. Head X: Customizable Audiovisual Synthesis for a Multi-purpose Virtual Head. AI 2010: Advances in Artificial Intelligence, 486-495.
Milne, M.K., Luerssen, M.H., Lewis, T.W., Leibbrandt, R.E., & Powers, D.M., 2010. Development of a Virtual Agent Based Social Tutor for Children with Autism Spectrum Disorders. Proceedings of the International Joint Conference on Neural Networks 2010, 1555-1563.
Burnham, D.K., Ambikairajah, E., Arciuli, J., Bennamoun, M., Best, C.T., Bird, S., Butcher, A.R., Cassidy, S., Chetty, G., Cox, F.M., et al., 2009. A blueprint for a comprehensive Australian English auditory-visual speech corpus. Selected proceedings of the 2008 HCSNet workshop on designing the Australian national corpus : mustering languages, 96-107.
Lewis, T.W. & Powers, D.M., 2008. Distinctive Feature Fusion for Recognition of Australian English Consonants. Interspeech 2008, 2671-2674.
Powers, D.M., Leibbrandt, R.E., Luerssen, M.H., Lewis, T.W., & Lawson, M.J., 2008. PETA: a pedagogical embodied teaching agent. 1st International Conference on Pervasive Technologies Related to Assistive Environments, PETRA 2008, 282.
Powers, D.M., Leibbrandt, R.E., Pfitzner, D.M., Luerssen, M.H., Lewis, T.W., Stevens, K., & Abrahamyan, A., 2008. Language Teaching in a Mixed Reality Games Environment. 1st International Conference on Pervasive Technologies Related to Assistive Environments, PETRA 2008, 282.
Leibbrandt, R.E., Luerssen, M.H., Matsumoto, T., Treharne, K., Lewis, T.W., Santi, M.L., & Powers, D.M., 2008. An immersive game-like teaching environment with simulated teacher and hybrid world. Animation, multimedia, IPTV and edutainment: proceedings of CGAT '08, 215-222.
Lewis, T.W. & Powers, D.M., 2005. Distinctive feature fusion for improved audio-visual phoneme recognition. Proceedings of the 8th International Symposium on Signal Processing and Its Applications, 1(1580196), 62-65.
Lewis, T.W. & Powers, D.M., 2004. Sensor Fusion Weighting Measures in Audio-Visual Speech Recognition. Proceedings of the Twenty-Seventh Australasian Computer Science Conference (ACSC2004), Dunedin, New Zealand. CRPIT, 26 (1).
Lewis, T.W. & Powers, D.M., 2002. Audio-Visual Speech Recognition Using Red Exclusions and Neural Networks. Proceedings of the twenty-fifth Australasian conference on Computer science 2002, 149-156.
Lewis, T.W. & Powers, D.M., 2002. A Multifaceted Investigation into Speech Reading. Advances in Soft Computing: Hybrid Information Systems.
Lewis, T.W. & Powers, D.M., 2001. Lip Feature Extraction Using Red Exclusion. Conferences in Research and Practice in Information Technology: Visualisation 2000 - Selected Papers from the Pan-Sydney Workshop on Visual Information Processing.
Conference publications
Luerssen, M.H., Leibbrandt, R.E., Lewis, T.W., Pashalis, J., Treharne, K., Pfitzner, D.M., & Powers, D.M., 2009. MANA - An Embodied Calendar for the Aged. Thinking Systems Joint Symposium, 127-127.
Luerssen, M.H. & Lewis, T.W., 2009. Head X: Tailorable Audiovisual Synthesis for ECAs. Proc. HCSNet SummerFest 2009.
Luerssen, M.H., Lewis, T.W., & Powers, D.M., 2009. Head X and the Thinking Media Framework. Thinking Systems Joint Symposium, 122-122.
Luerssen, M.H., Lewis, T.W., & Powers, D.M., 2009. Working with the Prosthetic Head. Thinking Systems Joint Symposium, 123-124.
Whitham, E.M., Fitzgibbon, S.P., DeLosAngeles, D., Lewis, T.W., Pope, K., Clark, C.R., Lillie, P., Hardy, A., Gandevia, S.G., & Willoughby, J.O., 2009. Experiences during paralysis : vision and humour. Australian Neuroscience Society Inc. 29th Annual Meeting.
Luerssen, M.H., Lewis, T.W., & Powers, D.M., 2009. Enabling the Evolution of the Thinking Head. Thinking Systems Joint Symposium, 126-126.
Abrahamyan, A., Davis, C., Fordyce, A., Gibert, G., Howell, C., Kim, J., Kroos, C., Lewis, T.W., Luerssen, M.H., Powers, D.M., et al., 2009. Evaluation methods. Thinking Systems Joint Symposium, 81-83.
Lewis, T.W., Luerssen, M.H., & Powers, D.M., 2009. Which one of you said that?. Thinking Systems Joint Symposium, 121-121.
Luerssen, M.H., Lewis, T.W., Leibbrandt, R.E., & Powers, D.M., 2008. Adaptive multimodal perception for a virtual museum guide. 3rd Workshop on Artificial Intelligence Techniques for Ambient Intelligence.
Willoughby, J.O., Broberg, I.M., Pope, K., Wallace, A.K., Witham, E., Fitzgibbon, S.P., & Lewis, T.W., 2007. EEG Gamma and other rhythms and astrocyte swelling: pathways to seizures. Proceedings of the 6th Asian & Oceanian Epilepsy Congress.
Witham, E., Pope, K., Fitzgibbon, S.P., Lewis, T.W., Clark, C.R., Loveless, S.J., & Willoughby, J.O., 2007. Scalp EEG during paralysis: augmented gamma activity can be detected during cognitive processing. Proceedings of the Scientific Meeting of the International Brain Research Organisation.
Smith, D., Williams, G., Burston, J.M., Pope, K., Clark, C.R., Loveless, S.J., Lewis, T.W., Whitham, E.M., Fitzgibbon, S.P., Wallace, A.K., et al., 2007. Electroencephalographic changes during states of Buddhist concentrative meditation. Proceedings of the Scientific Meeting of the Internationall Brain Research Organisation.
Broberg, I.M., Van De Riet, S., Pope, K., Lewis, T.W., Olsson, T., Nilsson, M., & Willoughby, J.O., 2007. Preictal cell-swelling: the first sign of seizure onset [abstract]. 7th IBRO World Congress of Neuroscience, 187-187.
Whitham, E.M., Broberg, I.M., Pope, K., Fitzgibbon, S.P., Lewis, T.W., Loveless, S.J., & Willoughby, J.O., 2006. Migraine and epilepsy: support for a pathophysiological link. 21st Annual Scientific Meeting of the Epilepsy Society of Australia.
Willoughby, J.O., Broberg, I.M., Pope, K., Wallace, A.K., Whitham, E.M., Loveless, S.J., Fitzgibbon, S.P., Lewis, T.W., & Clark, C.R., 2006. Gamma band involvement in animal models and humans with generalized epilepsies. Clinical EEG and Neuroscience : proceedings abstracts, 37(3), 266-266.
