School of Engineering
Computing and Technology Building, CM126
+44 (0) 1772 89 3226
My recent undergraduate teaching interests include:
My Ph.D. thesis  was concerned with the Monte Carlo simulation of large complex integrated circuits using the computational resources provided by parallel and distributed computing. The use of statistical simulation techniques for dealing with the ‘atomistic’ variability of nano-scale technology was at the heart of this project. My main contributions [2-5] were in reducing the computational complexity of the analyses through the use of statistical techniques such as ‘extreme value theory’ and ‘quasi-Monte-Carlo’ techniques.
At Manchester Metropolitan University, I worked on a BBSRC project concerned with pattern recognition [6-8]. I designed a fine-grained parallel algorithm with MPI library for adapting data-intensive bioinformatics workflows to a distributed system (cluster) and the Cloud. I later adapted the concept of a ‘Petri Net’ to model ‘concurrency’ and ‘cost’ for automatically optimising the use of intermediate data storage and thus making more efficient use of Cloud resources.
I am currently working on research projects concerned with audio signal processing and voice monitoring [9-16]. I am collaborating with Computer Scientists at the University of Manchester and medical staff at Manchester Royal Infirmary and Salford Royal Hospital. The latest work has led to a new project proposal entitled 'Rapid Access Voice Clinic'. I am interested in analysing the voice characteristics of patients suffering from voice problems such as ‘spasmodic disphonia’. I have published statistical papers concerned with analysing the consistency of perceptive voice analysis by GRBAS techniques. I am also interested in audiology and the measurement and simulation of hearing loss by computer.
I help to organise international conferences on European Modelling Symposium on Mathematical Modelling and Computer Simulation, and have been a guest editor for the ‘International Journal of Simulation: Systems, Science and Technology’.
 Xie Z., "Computation Reduction for Statistical Analysis of the Effect of Nano-CMOS Variability on Integrated Circuits," PhD thesis, the University of Manchester, 2012.
 Zheng Xie, D.A.Edwards, “Computational Performance Optimisation for Statistical Analysis of the Effect of Nano-C2MOS Variability on Integrated Circuits,” Journal of VLSI Design, vol.2013, Article ID 984376, 22 pages, 2013. Doi:10.1155/2013/984376.
 Xie Z,& Edwards D.A, “Statistical Analysis Model of Nano-CMOS Variability with Intra-die Correlation Due to Proximity,” Proc. 8th EUROSIM Congress on Modelling and Simulation, pp.628-632, Cardiff, Wales, United Kingdom, 10-13 September 2013. ISBN 978-0-7695-5073-2.
 Xie Z & Edwards D.A., “Computation Reduction for Statistical Analysis of the Effect of nano-CMOS Variability on Asynchronous Circuits”, Proc. 13th IEEE International Symposium on Design and Diagnostics of Electronic Circuits and Systems (DDECS), pp.161-166, April 14-16, 2010, Vienna, Austria. ISBN 978-1-4244-6610-8.
 Xie Z, & Edwards D.A , “Faster Statistical Analysis of the Effect of Nano-CMOS Variability on Asynchronous Circuits”, Proceedings of 21st UK Asynchronous Forum, Bristol, UK, September 2009.
 Xie Z., Han L., & Baldock R, “Augmented Petri Net Cost Model for Optimisation of Large Bioinformatics Workflows Using Cloud,” the Proc. 7th IEEE European Modelling Symposium on Mathematical Modelling and Computer Simulation, pp. 191-195, Manchester, UK, 20-23 Nov 2013. ISBN 978-1-4799-2577-3.
 Xie Z, Han L, Baldock R, “Enhancing Parallelism of Data-Intensive Bioinformatics Applications,” Proc. IEEE 8th EUROSIM Congress on Modelling and Simulation, pp.519-524, Cardiff, Wales, UK, 10-13 September 2013. ISBN 978-0-7695-5073-2.
 Han L., Xie Z, Baldock R, “Automatic Data Reuse for Accelerating Data Intensive Applications in the Cloud,” Proc.8th International Conference for Internet Technology and Secured Transactions (ICITST-2013), London, UK, 9-12 Dec 2013.
 Xie Z, Gadepalli C et al., “Reformulation and Generalisation of the Fleiss Kappa,” 22nd International Conference on Healthcare & Life-Science Research (ICHLSR), London, UK, September 2017.
 Xie Z, Gadepalli C et al., “Measurement of Rater Consistency and its Application in Voice Quality Assessments,” IEEE 10th International Congress on Image and Signal Processing, BioMedical Engineering and Informatics, Shanghai, China, October 2017.
 Xie Z. et al, "Reformulation and Generalisation of the Cohen and Fleiss Kappas," Journal of LIFE: International Journal of Health and Life-Sciences, Volume 3 Issue 3, ISSN 2454-5872, November 2017, pp.1-15., DOI-https://dx.doi.org/10.20319/lijhls.2017.33.115.
 Gadepalli C, Jalalinajafabadi F, Xie Z et al., “Voice Quality Assessment by Simulating GRBAS Scoring,” IEEE 11th European Modelling Symposium on Mathematical Modelling and Computer Simulation, Manchester, UK, November 2017.
 Xie Z, Gadepalli C, Cheetham B, “Measurement of Rater Consistency by Chance-Corrected Agreement Coefficients,” IEEE UKSim-AMSS 20th International Conference on Modelling & Simulation, Cambridge University (Emmanuel College), 27 - 29 March 2018.
 Xie Z, Gadepalli C and Cheetham B, “A Study of Chance-Corrected Agreement Coefficients for the Measurement of Multi-Rater Consistency,” International Journal of Simulation: Systems, Science & Technology, 19 (2). 10.1-10.9. ISSN 1473-8031, 2018.
 Xie Z., Gadepalli C., et al. "Machine Learning Applied to GRBAS Voice Quality Assessment," Journal of Advances in Science, Technology and Engineering Systems Journal (ASTESJ), under review.
 Gadepalli C, Jalalinajafabadi F, Xie.Z, Cheetham BMG, Homer JJ, "Consistency in Voice Quality Assessments by GRBAS and VHI-10: Analysis of a Scoring Exercise", In preparation