Publications from our Researchers

Several of our current PhD candidates and fellow researchers at the Data Science Institute have published, or in the proccess of publishing, papers to present their research.  


BibTex format

author = {Tajnafoi, G and Arcucci, R and Mottet, L and Vouriot, C and Molina-Solana, M and Pain, C and Guo, Y-K},
doi = {10.21136/am.2021.0307-19},
journal = {Applications of Mathematics},
pages = {287--317},
title = {Variational Gaussian process for optimal sensor placement},
url = {},
volume = {66},
year = {2021}

RIS format (EndNote, RefMan)

AB - Sensor placement is an optimisation problem that has recently gained great relevance. In order to achieve accurate online updates of a predictive model, sensors are used to provide observations. When sensor location is optimally selected, the predictive model can greatly reduce its internal errors. A greedy-selection algorithm is used for locating these optimal spatial locations from a numerical embedded space. A novel architecture for solving this big data problem is proposed, relying on a variational Gaussian process. The generalisation of the model is further improved via the preconditioning of its inputs: Masked Autoregressive Flows are implemented to learn nonlinear, invertible transformations of the conditionally modelled spatial features. Finally, a global optimisation strategy extending the Mutual Information-based optimisation and fine-tuning of the selected optimal location is proposed. The methodology is parallelised to speed up the computational time, making these tools very fast despite the high complexity associated with both spatial modelling and placement tasks. The model is applied to a real three-dimensional test case considering a room within the Clarence Centre building located in Elephant and Castle, London, UK.
AU - Tajnafoi,G
AU - Arcucci,R
AU - Mottet,L
AU - Vouriot,C
AU - Molina-Solana,M
AU - Pain,C
AU - Guo,Y-K
DO - 10.21136/am.2021.0307-19
EP - 317
PY - 2021///
SN - 0373-6725
SP - 287
TI - Variational Gaussian process for optimal sensor placement
T2 - Applications of Mathematics
UR -
UR -
VL - 66
ER -