Dr Suparna De
Academic and research departments
Distributed and Networked Systems Group, Department of Computer Science, School of Computer Science and Electronic Engineering.Biography
Suparna De is a Lecturer in the Department of Computer Science and a member of the Distributed and Networked Systems research group. She obtained her Ph.D. and MSc. (with distinction) degrees at the Dept. of Electronic Engineering from the University of Surrey. Prior to this, she received her Master in Information Technology degree from the University of Delhi, India and a BSc. Physics (with honours) degree from St. Stephen's College, University of Delhi.
She serves on the editorial board of the International Journal of Distributed Sensor Networks and Elsevier High-Confidence Computing journals.
Areas of specialism
Affiliations and memberships
Research
Research interests
Suparna's research applies machine learning and Semantic Web technologies to the broad domain of knowledge and data engineering, including deep learning for text data (derived from social networks and longitudinal social science datasets), semantic modelling and search and smart city data analytics. Her current work focusses on researching machine learning algorithms to automate metadata extraction and uplift for longitudinal social science questionnaires. Previous work has included research in Big Data analytics, visualisation and data fusion techniques for understanding city dynamics that involve the use of city resources.
Research projects
ESRC-funded, Co-PI, Feb. - December 2021.
This grant is a collaboration with Jon Johnson at the Institute of Education, UCL, London. The project investigates automated extraction of metadata from the Cohort and Longitudinal Studies Enhancement Resources (CLOSER) UK Data Archive. Automation of question extraction from paper questionnaires will form part of a pipeline to populate question banks and other metadata repositories and provide a low cost solution to the manual processes undertaken as part of the CLOSER project and UKDA (and other archives) to enhance survey metadata alongside the data description.
STFC DiRAC-funded, Co-PI, Feb. - December 2021.
This grant is a collaboration with Jon Johnson at IoE, UCL, and RITS, UCL. The project will utilise the questions (question text and response domains) and linked concepts (based on the European Language Social Science Thesaurus (ELSST)) held in CLOSER Discovery, the CLOSER metadata store. The aim is to create a model that will be able to classify existing questions (and predict from new questions) to these existing concepts in ELSST.
Indicators of esteem
Scholarships:
- Overseas Research Student Sponsorship for PhD research: University of Surrey and MobileVCE Core 4 programme
- DFIDSSS Scholarship: jointly funded by the University of Surrey and the British Commonwealth Scholarship Commission for MSc programme.
Awards:
- Cable and Wireless Award: University of Surrey, for the best overall performance from a student graduating with an MSc in Satellite Communication Engineering or Communications Networks and Software
- IET Certificate in recognition of significant contribution to IET On Campus at the University of Surrey
Research Themes
Data analytics for Cyber-Physical and Social Streams
This research theme focusses on deriving latent patterns in CPSS data streams by developing novel ML algorithms; as well as fusion of social network data with sensor data streams. Our work looks at analysing social network data to extract real-world event information and human movements, in conjunction with sensor data and open datasets, to achieve outcomes related to quantifying their influence on smart city dynamics, such as traffic flows, measured pollution levels, redefining inner-city boundaries etc.
Related publications:
- Exploring the Effectiveness of Service Decomposition in Fog Computing Architecture for the Internet of Things, IEEE Transactions on Sustainable Computing, March 2019
- A Survey on an Emerging Area: Deep Learning for Smart City Data, IEEE Transactions on Emerging Topics in Computational Intelligence, May 2019
- Data-driven Air Quality Characterisation for Urban Environments: a Case Study, IEEE Access, December 2018
- Missing Data Estimation in Mobile Sensing Environments, IEEE Access 6(1), October 2018
- Cyber–Physical–Social Frameworks for Urban Big Data Systems: A Survey. MDPI Applied Sciences, 2017, 7 (10) (slideshare)
- Real world city event extraction from Twitter data streams, Procedia Computer Science, 2016, 98, pp. 443-448 (dataset)
Large scale sensor and data discovery and ranking
This research theme focuses on scalable, distributed discovery mechanisms supporting the sensor-as-a-service paradigm. Based on the particular localization characteristics of IoT deployments, our work has developed novel methods using geospatial indexing techniques and semantic service technologies for both sensor and sensor data discovery.
Related publications:
- Designing the Sensing as a Service Ecosystem for the Internet of Things, IEEE Internet of Things Magazine,1(2), December 2018
- Spatial Indexing for Data Searching in Mobile Sensing Environments. Sensors 2017, 17(6), 1427
- Search Techniques for the Web of Things: A Taxonomy and Survey, Sensors 2016, 16(5), 600
- An Experimental Study on Geospatial Indexing for Sensor Service Discovery, Expert Systems with Applications, Elsevier, May 2015 (ontology, dataset)
- A Ranking Method for Sensor Services based on Estimation of Service Access Cost, Information Sciences, Elsevier, October 2015 (code and dataset)
- Enabling Query of Frequently Updated Data from Mobile Sensing Sources, The 13th IEEE International Conferences on Ubiquitous Computing and Communications (IUCC2014), December 2014.
Semantic Models for the Internet of Things
This research theme focusses on semantic models for the main abstractions and concepts that underlie the IoT domain. The developed ontologies enable fine-grained semantic annotations, and to create Linked sensor data for service and data discovery.
Related publications:
- SmartTags: IoT Product Passport for Circular Economy Based on Printed Sensors and Unique Item-Level Identifiers, Sensors 2019, 19(3), 586.
- Knowledge Representation in the Internet of Things: Semantic Modelling and its Applications. Automatika – Journal for Control, Measurement, Electronics, Computing and Communications, December 2013.
- An Internet of Things Platform for Real-World and Digital Objects'. Scalable Computing: Practice and Experience, May 2012. (platform demo)
- Service modelling for the Internet of Things, IEEE Federated Conference on Computer Science and Information Systems (FEDCSIS), September 2011 (ontology)
Supervision
Completed postgraduate research projects I have supervised
Yuchao Zhou (2013- 2017) (in collaboration with Prof. Klaus Moessner): Data-driven Cyber-Physical-Social System for Knowledge Discovery in Smart Cities
Postgraduate research supervision
External collaborative PhD supervisor for Qi Chen at the Xi’an Jiaotong-Liverpool University, China, November 2017 - July 2021.