
I am now an assistant professor at the University of Hong Kong.
Check my new website here.






Research interests:
My current research interests include:Papers & preprints
 Journal publications:
 S. Gaubert and Z. Qu. Dobrushin ergodicity coefficient for Markov operators on cones, Integral Equations and Operator Theory, pp.124, 2014. DOI: 10.1007/s0002001421932.
 Z. Qu. Contraction of Riccati flows applied to the convergence analysis of a maxplus curse of dimensionality free method, SIAM Journal on Control and Optimization, 52(5):26772706, 2014. DOI: 10.1137/130906702.
 S. Gaubert and Z. Qu. The contraction rate in Thompson metric of orderpreserving flows on a cone  application to generalized Riccati equations, Journal of Differential Equations, 256(8):29022948, 2014. DOI: 10.1016/j.jde.2014.01.024.
 Preprints:
 D. Csiba, Z. Qu and P. Richtárik. Stochastic dual coordinate ascent with adaptive probabilities, ICML, 2015
 Z. Qu, P. Richtárik, M. Takáč and O. Fercoq. SDNA: stochastic dual newton ascent for empirical risk minization, submitted, 2015
 Z. Qu and P. Richtárik. Coordinate descent with arbitrary sampling I: algorithms and complexity, submitted, 2014
 Z. Qu and P. Richtárik. Coordinate descent with arbitrary sampling II: expected separable overapproximation, submitted, 2014
 Z. Qu, P. Richtárik and T. Zhang. Randomized dual coordinate ascent with arbitrary Sampling, submitted, 2014.
 J. Konečný, Z. Qu and P. Richtárik. S2CD: semistochastic coordinate descent, poster presented at the 7th NIPS Workshop on Optimization for Machine Learning, 2014.
 O. Fercoq, Z. Qu. and P. Richtárik. Accelerated proximal parallel coordinate descent for strongly convex functions, in preparation.
 S. Gaubert and Z. Qu. Checking the strict positivity of Kraus maps is NPhard, submitted, 2013.
 Conference Proceedings (refereed):
 O. Fercoq, Z. Qu, P. Richtárik and M. Takáč. Fast distributed coordinate descent for nonstrongly convex losses, in Proc. of the 24th IEEE International Workshop on Machine Learning for Signal Processing, Reims, 2014.
 Z. Qu. A maxplus based randomized algorithm for solving a class of HJB PDEs, to appear in Proc. of the 53rd IEEE Conference on Decision and Control, Los Angeles, 2014.
 S. Gaubert, Z. Qu and S. Sridharan. Bundlebased pruning in the maxplus curse of dimensionality free method, in Proc. of the 21st International Symposium on Mathematical Theory of Networks and Systems, Groningen, 2014.
 S. Gaubert and Z. Qu. Markov operators on cones and noncommutative consensus, in Proc. of the 12th biannual European Control Conference, pp 26932700, Zurich, 2013.
 Z. Qu. Contraction of Riccati flows applied to the convergence analysis of the maxplus curse of dimensionality free method, in Proc. of the 12th biannual European Control Conference, pp.22262231, Zurich, 2013.
 S. Gaubert, W. McEneaney and Z. Qu. Curse of dimensionality reduction in maxplus based approximation methods: theoretical estimates and improved pruning algorithms, in Proc. of the 50th IEEE Conference on Decision and Control and European Control Conference, pp.10541061, Orlando, 2014. DOI:10.1109/CDC.2011.6161386.
Teaching experience
 Teaching: University of Edinburgh course CORF, course title "Computing for Operational Research and Finance", in charge of 5 lectures and 5 lab sessions for 70 postgraduate students, Sep. to Oct. 2014
 Teaching assistant: ENSTA course AO102, course title "Dynamical systems", in charge of 14h practical work sessions for 18 3rd year undergraduate students, Sep. to Nov. 2013
 Teaching assistant: ENSTA course AO102, course title "Dynamical systems", in charge of 14h practical work sessions for 18 3rd year undergraduate students, Sep. to Nov. 2012
Conference talks
 22nd International Symposium on Mathematical Programming, Pittsburgh, USA, July 2015. slides
 32nd International Conference on Machine Learning, Lille, France, July 2015. slides
 3rd Optimization and Big Data Workshop, Edinburgh, UK, May 2015. . slides
 53rd Conference on Decision and Control, Los Angeles, USA, December 2014. slides
 4th IMA conference on numerical algebra and optimisation, Birmingham, UK, September, 2014.
 12th European Control Conference, Zurich, Switzerland, July, 2013.
 SIAM annual meeting, San Diego, California, U.S.A., July, 2013.
 SMAI 2013, Seignosse, France, May, 2013.
 PGMO (Program Gaspard Monge pour l'Optimisation et la recherche opérationnelle), monthly seminar, France, Feb., 2013.
 Seminar Digiteo, Ecole Polytechnique, France, Mar., 2012.
 50th IEEE Conference on Decision and Control, Orlando, U.S.A., Dec., 2011.
 Second Monterey Workshop on Computational Issues in Nonlinear Control, Monterey, U.S.A., Nov., 2011.
CV
my CV.Thesis manuscript
thesis.Contact
School of Mathematics,University of Edinburgh
EH9 3FD Edinburgh, UK
Phone: +44 131 650 5074
Email: zheng.qu at ed.ac.uk