UC SPARK - University of Canterbury - New Zealand

Dr Rachael Tappenden

Mathematics and Statistics

Fields of Research

  • Optimization
  • Numerical linear algebra

Researcher Summary

My research interests lie in the broad area of optimization and numerical linear algebra.

Subject Area: Disciplines

Research Groups

Research/Scholarly/Creative Works

Journal Article
  • Ma C., Tappenden R. and Takac M. (2016) Linear convergence of randomized feasible descent methods under the weak strong convexity assumption. Journal of Machine Learning Research 17: 1-24.
  • Tappenden R., Richtárik P. and Gondzio J. (2016) Inexact Coordinate Descent: Complexity and Preconditioning. Journal of Optimization Theory and Applications 170(1): 144-176. http://dx.doi.org/10.1007/s10957-016-0867-4.
  • Tappenden R., Hegarty J., Broughton R., Butler A., Coope I. and Renaud P. (2013) X-ray image enhancement via determinant based feature selection. Australasian Physical and Engineering Sciences in Medicine 36(4): 449-455. http://dx.doi.org/10.1007/s13246-013-0221-1.
  • He P., Yu H., Thayer P., Jin X., Xu Q., Bennett J., Tappenden R., Wei B., Goldstein A. and Renaud P. (2012) Preliminary experimental results from a MARS Micro-CT system. Journal of X-Ray Science and Technology 20(2): 199-211. http://dx.doi.org/10.3233/XST-2012-0329.
  • Broughton R., Coope I., Renaud P. and Tappenden R. (2010) Determinant and exchange algorithms for observation subset selection. IEEE Transactions on Image Processing 19(9): 2437-2443. http://dx.doi.org/10.1109/TIP.2010.2048150.
Conference Contribution - Published
  • Broughton RL., Coope ID., Renaud PF. and Tappenden REH. (2011) Recovery of localised structure from signals with non-sparse components. University of New South Wales, Sydney, Australia: Computational Techniques and Applications Conference, 27 Nov-1 Dec 2010. In ANZIAM Journal 52: 567-580.
  • Broughton R., Coope I., Renaud P. and Tappenden R. (2010) Recovery of localised structure from signals with non-sparse components. In ANZIAM Journal : Electronic Supplement 52: 567-580.
Report
  • Broughton R., Coope I., Renaud P. and Tappenden R. (2009) A Barzilai-Borwein $l_1$-Regularized Least Squares Algorithm for Compressed Sensing.1-16.
Thesis / Dissertation
  • Tappenden REH. (2011) Development and Implementation of Algorithms for Fast Image Reconstruction. http://hdl.handle.net/10092/5998. Christchurch, New Zealand. University of Canterbury.