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Florence Nightingale Colloquium presents Max Welling

Friday 26 June 2020
The seminar is targeted at a broad audience, in particular we invite master students, PhD candidates and supervisors interested or involved in the Data Science Research programme as well as colleagues from LIACS and MI to attend. The seminar is organized by the DSO, MI and LIACS.
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Prof. Dr. Max Welling, Research chair in Machine Learning at the University of Amsterdam and VP Technologies at Qualcomm

Neural Augmentation with Applications in MRI Image Reconstruction and Wireless Communication

Deep learning has been amazingly successful in solving AI tasks where the domain is well defined and a lot of data is available for that domain. Examples include speech recognition, (medical) image analysis, automatic translation and so on. However, increasingly researchers are worried about 'out-of-domain generalization' where a model needs to perform well on data that the learning algorithm has never seen before. Traditional engineering approaches, which include a large amount of prior knowledge and model the physical data generation process often do better in this regime. Therefore, a natural question to ask is how to combine these two approaches. In this talk we introduce 'neural augmentation', which builds a black box neural network around an interpretable graphical (generative) model of the data. The model is trained end-to-end by unrolling the inference procedure in the graphical model (given by belief propagation), augmenting it with a factor-graph neural network, and backpropagating through the whole recurrent architecture so defined. We illustrate these ideas on MRI image reconstruction, LDPC error correction decoding with bursty channels and on massive MIMO detection in wireless communication.

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