Valentin Radu

Research Associate, University of Edinburgh

I lead the Ubiquitous Intelligent Systems Group in the School of Informatics, University of Edinburgh.

My research interests are in:
  • optimal deep neural networks on resource-constrained systems
  • multimodal deep learning for robust inferences
  • knowledge transfer across sensing modalities
  • specialized neural architecture search
  • context awareness by mobile sensing


[02 Jul 2019] Paper accepted to appear in ACM IMWUT.

Joint work with Maximilian Henne (University of Edinburgh) - "Vision2Sensor: Knowledge Transfer Across Sensing Modalities for Human Activity Recognition"

[01 Jul 2019] 2 papers accepted to be presented at IEEE IPIN 2019. See you in Pisa, Italy

With Xijia Wei (University of Edinburgh) - "Calibrating Recurrent Neural Networks on Smartphone Inertial Sensors for Location Tracking"; Adrian Cosma (Politehnica University of Bucharest), Ion Emilian Radoi (Politehnica University of Bucharest) - "CamLoc: Pedestrian Location Estimation with Pose Recognition on Smart Cameras"; well done guys!

[21 Feb 2019] We're organising a thematic session on Edge AI at HiPEAC CSW 2019. Join us!

Invited speakers from top research industry labs.

[19 Dec 2018] Started joint project with Sony Communications to develop multimodal solutions for smart gyms.

[12 Aug 2018] We're organising the Emerging Deep Learning Accelerators (EDLA) workshop at HiPEAC 2019, Valencia. Consider submitting your work

"One trillion new IoT devices will be produced by 2035." (ARM)

Our ambition is to have many of these as intelligent devices.

Research Group

I have the pleasure of working with some amazing people in the Ubiquitous Intelligent Systems group

David Ivorra

Research topic: Efficient Video Inferences at the Edge

David Strömbäck

Research topic: Multimodal Activity and Exercise Recognition

Luca McArthur

Research topic: Multi-task Neural Architecture Search


Xingji Chen

MSc thesis (2018): "WiFi-based Indoor Localization using Deep Neural Networks on Smartphones"

Xijia Wei

MSc thesis (2018): "Smartphone-based Location Tracking using Recurrent Neural Networks"

Maximilian Henne

MSc thesis (2018): "Automatic Ground-truth Collection in Mobile Systems Through Multimodal Sensing"

Selected publications

A full list on Google Scholar

  • [IISWC'18] Characterising Across-Stack Optimisations for Deep Convolutional Neural Networks
    J. Turner, J. Cano, V. Radu, E. J. Crowley, M. O'Boyle, and A. Storkey
    In the International Symposium on Workload Characterization (IISWC), IEEE, North Carolina, USA, September 2018.
  • [IMWUT'17] Multimodal Deep Learning for Activity and Context Recognition
    Valentin Radu, Catherine Tong, Sourav Bhattacharya, Nicholas D. Lane, Cecilia Mascolo, Mahesh K. Marina, Fahim Kawsar
    In the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies: Volume 1 Issue 4, December 2017.
    [DOI] [PDF]
  • [UbiComp'16] Towards Multimodal Deep Learning for Activity Recognition on Mobile Devices
    Valentin Radu, Nicholas D. Lane, Sourav Bhattacharya, Cecilia Mascolo, Mahesh K. Marina, Fahim Kawsar
    In the Joint Conference on Pervasive and Ubiquitous Computing (UbiComp/ISWC'16) Adjunct, ACM, September 2016, Heidelberg, Germany.
    [DOI] [PDF] [bib]
  • [ATC'15] Impact of Indoor-Outdoor Context on Crowdsourcing based Mobile Coverage Analysis
    Mahesh K. Marina, Valentin Radu, Konstantinos Balampekos
    In All Things Cellular Workshop (ATC) collocated with SIGCOMM'15, ACM, August 2015, London, UK.
    [DOI] [PDF] [bib]
  • [SenSys'14] A Semi-Supervised Learning Approach for Robust Indoor-Outdoor Detection with Smartphones
    Valentin Radu, Panagiota Katsikouli, Rik Sarkar and Mahesh K. Marina
    In the Conference on Embedded Networked Sensor Systems (SenSys), ACM, November 2014, Memphis, USA.
    [DOI] [PDF] [bib]
  • [MobiCom'14] Poster: Am I Indoor or Outdoor?
    Valentin Radu, Panagiota Katsikouli, Rik Sarkar, Mahesh K. Marina
    In the 20th Annual International Conference on Mobile Computing and Networking (MobiCom), ACM, September 2014, Hawaii, USA.
    [DOI] [PDF] [bib] [poster]
  • [IPIN'13] HiMLoc: Indoor Smartphone Localization via Activity Aware Pedestrian Dead Reckoning with Selective Crowdsourced WiFi Fingerprinting - Nominated for Best Paper Award
    Valentin Radu, Mahesh K. Marina
    In the 4th International Conference on Indoor Positioning and Indoor Navigation (IPIN), IEEE, October 2013, Belfort-Montbeliard, France.
    [DOI] [PDF] [bib]
  • [CNSM'13] Pazl: A Mobile Crowdsensing based Indoor WiFi Monitoring System
    Valentin Radu, Lito Kriara, Mahesh K. Marina
    In the 9th International Conference on Network and Service Management (CNSM), IEEE, October 2013, Zurich, Switzerland.
    [DOI] [PDF] [bib] [Presentation]


+44 131 650 5152

University of Edinburgh, Informatics Forum, room 1.03
10 Crichton Street, Edinburgh EH8 9AB, UK