Bio of Andersen ANG (Under construction)


Andersen Man Shun Ang is a PhD student in Mathématique et Recherche Opérationnelle, Faculté polytechnique, UMONS, Belgium. His current research interests are Optimization Algorithms for Matrix-Tensor Factorization. Before his PhD study, he received BEng degree (Electronic and Communication Engineering) from the University of Hong Kong (HKU) in 2014, and a M.Phil degree (Biomedical Engineering) from the same university in 2016. He received few awards and honors for his research and studies, including some championships in IEEE student paper competitions, government scholarships and university scholarships. At HKU, he worked with : the Control Research Lab, the Neural Engineering Lab, the Electromagnetics Lab, the Technology-Enriched Learning Initiative, the Department of Mathematics, the School of Nursing and the General Education unit. He also served as the head teaching assistant and taught many undergraduate courses : Computer Programming and Applications, Signals and Linear Systems, Control and Instrumentations, Information Theory and Coding. His excellence in teaching was demonstrated by receiving teaching assistant award 2 times in the consecutive years : the Outstanding Teaching Assistant Award (2016) and the the Best Teaching Assistant Award (2015).

Mais, il ne parle pas français. Par conséquent, il ne enseigne pas en UMONS en 2017.

What I do / focus / read : generally everything related to NMF

  • Matrix/Tensor Factorizations

    • Uniqueness, existence, hardness, robustness, stability

  • Continuous optimization

    • Iterative 1st order non-linear programming

    • Global optimization on Non-convex optimisation

    • Robustness analysis of algorithm

  • Other things

    • Analytic continuation, anything that is interesting

General information on research work

He is now a PhD student in UMONS under the supervision of Prof. Nicolas Gillis.

Previously, Andersen Ang spent 5 years in Electrical And Electronic Engineering (EEE) Department at HKU, where he obtain his bachelor degree and research master degree. His supervisors were

He gained the following experiences (all in applied research with less theory focus) in that 5 years :

  • Biomedical signals and systems, in particular

    • Data acquisition, preprocessing and analysis of various biomedical signals.

    • Brain Computer Interface development.

    • Multiple machine learning algorithms, analysis methods and toolkits.

    • Conducting EEG experiments with human subjects.

    • Experiments on control systems and electromagnetic system.

On non-research work / side projects

He also worked with the Technology-Enriched Learning Initiative at HKU on the production of one MOOC (massive open online course), namely HKU03x the Humanity and Nature in Chinese Thought and one SPOC (Small Private Online Course) CCST9003 Everyday Computing and the Internet.

On extra-curricular : music

Andersen is an amateur musician. He is the admin of the 香港同人管弦樂團 Hong Kong Doujin Philharmonia, the former big band leader of the Kong U Big Band and former the bass trombonist of the Saturday Night Jazz Orchestra. He is a self-taught multi-instrumentalist and arranger.

Performance experiences:

  • Hong Kong Summer Jazz Festival, 2014,2015,2016,2017

  • Performance in Hong Kong government head quarters, 2015.03.20

  • US Independence Day Celebration concert, Kerry Hotel, Hong Kong, 2017.07.06

  • And various big band gigs in Hong Kong, Japan, Belgium and Italy
    [His soundcloud (to be updated)], [Some of his arrangements (to be updated)]

  • Looking for big band !!!! Call me if you need a trombonist !!!

Other funny things

Andersen Ang’s Erdos number is 5

  • First path (in 2019)

    • Paul Erdos coauthored with Ron Aharoni : “Optima of dual integer linear programs”, Combinatorica 8 (1988), no. 1, 13–20.

    • Ron Aharoni coauthored with Abraham Berman : “An interior points algorithm for the convex feasibility problem”, Adv. in Appl. Math. 4 (1983), no. 4, 479–489. 90C25 (52A99)

    • Abraham Berman coauthored with Robert James Plemmons : “Nonnegative matrices in the mathematical sciences”, Revised reprint of the 1979 original. Classics in Applied Mathematics, 9. Society for Industrial and Applied Mathematics (SIAM), Philadelphia, PA, 1994.

    • Robert James Plemmons coauthored with Nicolas Gillis : “Sparse nonnegative matrix underapproximation and its application to hyperspectral image analysis”, Linear Algebra Appl. 438 (2013), no. 10, 3991–4007.

    • Nicolas Gillis coauthored with Andersen Ang : “Accelerating Nonnegative Matrix Factorization Algorithms using Extrapolation”. Neural Computation, vol. 31, issue 2, pp 417-439, Feburary 2019

  • Second path (in 2014)

    • Paul Erdis coauthored with Béla Bollobás : “Graphs of extremal weights”. Ars Combin. 50 (1998), 225–233.

    • Béla Bollobás coauthored with Jonathan R. Partington : “Inequalities for quadratic polynomials in Hermitian and dissipative operators”, Adv. in Math. 51 (1984), no. 3, 271–280.

    • Jonathan R. Partington coauthored with James Lam : “Rational approximation of a class of infinite-dimensional systems. I. Singular values of Hankel operators”. Math. Control Signals Systems 3 (1990), no. 4, 325–344.

    • James Lam coauthored with Y.S. Hung : “On the stability of projections of balanced realizations”, Linear Algebra and its Applications, Vol. 257, pp. 163-182, May 1997

    • Y.S. Hung coauthored with Andersen Ang : “Efficient Implementation and Design of A New Single-Channel Electrooculography-based Human-Machine Interface System”, IEEE Transactions on Circuits and Systems II: Express Briefs, Vol. 62, no. 2, pp. 179 - 183, Nov, 2014.

Andersen Ang’s Academic Genealogy (if he can graduate)

From The Mathematics Genealogy Project, he is linked with :
Nicolas Gillis - François Glineur - Jacques Teghem - Paul Pierre Gillis - Théophile Henri Joseph Lepage - Théophile De Donder - Henri Poincaré - Charles Hermite - Eugène Charles Catalan - Joseph Liouville - Simeon Denis Poisson - Joseph Louis Lagrange and Pierre-Simon Laplace - Leonhard Euler - Johann Bernoulli - Jacob Bernoulli - … - and finally rooted to Nasir al-Din al-Tusi.

About his Singaporean surname : How to Pronounce Ang.


  • Francais : Bonjour, cette page est en Anglais. Je ne parle pas Francais. Je ne connais que très peu le français simple. Je suis desole !! Merci beaucoup, bonne journée !!

  • 日本語 : 私は香港人です。日語苦手。

  • 呢行得香港人先睇得明 : 我係香港人,寫繁體字,講廣東話!

  • Computer : SGksIHdlbGNvbWUgdG8gbXkgcGFnZS4=