Professor Ata Kaban PhD

Professor Ata Kaban

School of Computer Science

Contact details

Email
a.kaban@cs.bham.ac.uk
View my research portal
Address
School of Computer Science
University of Birmingham
Edgbaston
Birmingham
B15 2TT
UK

Ata Kaban is Professor in Computer Science working in statistical machine learning and data mining in high dimensional settings. The two major problems of her focus are the `curse of dimensionality’ and the gap between theory and practice.

 Ata Kaban is also an EPSRC Fellow (Jan 2017- Jan 2022) with the project “FORGING: Fortuitous Geometries and Compressed Learning”, and a part-time Turing Fellow.

 For more information please visit Ata's Computer Science page.

Qualifications

  • PhD in Computer Science 2002

  • PhD in Musicology 2000

  • BSc (Hons) in Computer Science 1999

  • MSc in Musicology 1994

  • BA in Musical Composition 1993

Biography

Ata Kaban obtained a BSc in Computer Science from the Babes-Bolyai University of Cluj-Napoca, Romania, alongside of finishing a PhD in Musicology. She went on to pursue a PhD in Computer Science in Scotland, at the University of Paisley, under the supervision of Professor Mark Girolami. Upon completing, she briefly took an assistant professor position at the Eotvos Lorand University of Budapest, Hungary, before joining the University of Birmingham as a lecturer in 2003. She has been working in Birmingham since then, from 2018 as a Professor.

Postgraduate supervision

  • Statistical machine learning - theory and practice

  • High-dimensional data spaces, distance concentration

  • Probabilistic modelling of data, Bayesian inference

  • Large scale black-box, optimisation

  • Dimensionality reduction, random projections

  • Compressive learning, compressive optimisation 

Research

Professor Kaban’s research contributed to the theory and practice of statistical machine learning, data mining, pattern recognition, as well as to evolutionary black-box optimisation. Her main focus has been to explain, test and resolve computational, statistical, inferential, geometric, and interpretational problems associated with the ‘curse of dimensionality’ in these areas. Her current work (supported by a 5 years EPSRC Fellowship) develops theory for high dimensional data analytics through compressive learning, to provide better risk guarantees and new algorithms that exploit naturally occurring structures in the high dimensional learning problems.

 In previous years, she had several fruitful inter-disciplinary collaborations where she developed novel machine learning algorithms to analyse data from Palaeontology (through a visit to the University of Helsinki), Astrophysics (as a Co-I on a PPARC-funded project), and Biology (as an MRC Discipline Hopping Award recipient).

Publications

Recent publications

Article

Kaban, A & Reeve, H 2024, 'Structure discovery in PAC-Learning by Random Projections', Machine Learning. https://doi.org/10.1007/s10994-024-06531-0

Huang, Z, Lei, Y & Kaban, A 2023, 'Optimisation and Learning with Randomly Compressed Gradient Updates', Neural Computation. https://doi.org/10.1162/neco_a_01588

Turner, A & Kaban, A 2023, 'PAC learning with approximate predictors', Machine Learning. https://doi.org/10.1007/s10994-023-06301-4

Palias, E & Kabán, A 2023, 'The effect of intrinsic dimension on the Bayes-error of projected quadratic discriminant classification', Statistics and Computing, vol. 33, no. 4, 87. https://doi.org/10.1007/s11222-023-10251-1

Reeve, H, Kaban, A & Bootkrajang, J 2022, 'Heterogeneous sets in dimensionality reduction and ensemble learning', Machine Learning. https://doi.org/10.1007/s10994-022-06254-0

Kaban, A & Durrant, RJ 2020, 'Structure from Randomness in Halfspace Learning with the Zero-One Loss', Journal of Artificial Intelligence Research.

Kaban, A 2020, 'Sufficient ensemble size for random matrix theory-based handling of singular covariance matrices', Analysis and Applications, vol. 18, no. 5, pp. 929-950. https://doi.org/10.1142/S0219530520400072

Conference contribution

Huang, Z, Lei, Y & Kaban, A 2023, Noise-efficient learning of differentially private partitioning machine ensembles. in M-R Amin, S Canu, A Fischer, T Guns, PK Novak & G Tsoumakas (eds), Machine Learning and Knowledge Discovery in Databases: European Conference, ECML PKDD 2022, Grenoble, France, September 19–23, 2022, Proceedings, Part IV. 1 edn, Lecture Notes in Computer Science, vol. 13716, Springer, Cham, pp. 587–603, European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases, Genoble, France, 19/09/22. https://doi.org/10.1007/978-3-031-26412-2_36

Zhou, S, Lei, Y & Kaban, A 2023, Toward Better PAC-Bayes Bounds for Uniformly Stable Algorithms. in Advances in Neural Information Processing Systems: NeurIPS 2023. Advances in Neural Information Processing Systems, Thirty-seventh Conference on Neural Information Processing Systems, New Orleans, United States, 10/12/23.

Reeve, HWJ & Kaban, A 2020, Optimistic Bounds for Multi-output Prediction. in 37th International Conference on Machine Learning (ICML 2020). 37th International Conference on Machine Learning (ICML 2020), Virtual Event, 12/07/20.

Reeve, HWJ & Kaban, A 2019, Classification with unknown class-conditional label noise on non-compact feature spaces. in 32nd Annual Conference on Learning Theory (COLT 19). vol. 99, Proceedings of Machine Learning Research, vol. 99, Proceedings of Machine Learning Research, pp. 2624-2651, 32nd Annual Conference on Learning Theory (COLT 19), Phoenix, Arizona, United States, 25/06/19. <http://proceedings.mlr.press/v99/>

Kaban, A 2019, Compressive learning of multi-layer perceptrons: an error analysis. in Proceedings of 2019 International Joint Conference on Neural Networks (IJCNN) ., N-20494, IEEE Computer Society Press, International Joint Conference on Neural Networks (IJCNN 2019), Budapest, Hungary, 14/07/19. https://doi.org/10.1109/IJCNN.2019.8851743

Kaban, A 2019, Dimension-free error bounds from random projections. in Thirty Third AAAI Conference on Artificial Intelligence (AAAI-19). Proceedings of the AAAI Conference on Artificial Intelligence, no. 1, vol. 33, AAAI Press, pp. 4049-4056, Thirty Third AAAI Conference on Artificial Intelligence (AAAI-19), Honolulu, Hawaii, United States, 27/01/19. https://doi.org/10.1609/aaai.v33i01.33014049

Reeve, HWJ & Kaban, A 2019, Exploiting geometric structure in mixture proportion estimation with generalised Blanchard-Lee-Scott estimators. in 30th International Conference on Algorithmic Learning Theory (ALT'19). Proceedings of Machine Learning Research, vol. 98, Proceedings of Machine Learning Research, pp. 682-699, 30th International Conference on Algorithmic Learning Theory (ALT'19), Chicago, United States, 22/03/19. <http://proceedings.mlr.press/v98/reeve19a.html>

Reeve, HWJ & Kaban, A 2019, Fast rates for a kNN classifier robust to unknown asymmetric label noise. in Proceedings of the Thirty-sixth International Conference on Machine Learning (ICML 2019). vol. 97, The Proceedings of Machine Learning Research , vol. 97, pp. 5401-5409, Thirty-sixth International Conference on Machine Learning (ICML 2019), Long Beach, CA, United States, 9/06/19. <http://proceedings.mlr.press/v97/reeve19a.html>

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