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Mr Sagar Uprety

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Professional biography

Sagar Uprety is a Marie Curie Researcher and a final year PhD student at The Open University, UK.  His research focusses on investigating quantum-like phenomena in user behaviour in Information Retrieval and building quantum-inspired user models. He has a Bachelor's degree in Computer Science and a Master’s in Physics from BITS Pilani, India. After graduating, he worked for 2 years as a Software Engineer with projects including writing backend code for a vertical search engine (Stayzilla) and to perform query intent classification for voice search and chatbots using Convolutional Neural Networks (at Justdial). 

In 2017, he joined European Commision's Horizon 2020 QUARTZ project at The Open University to work on Quantum-inspired user models for information interaction.  Within this project, he has also been seconded twice to Queensland University of Technology, Australia.

Research interests

Broadly, Sagar is interested in the human factor in the design of intelligent systems. His research focuses on using concepts from cognitive and behavioural sciences to improve understanding of user interactions. Specifically, he works on using similarities between behaviours of quantum and cognitive systems to build conceptual and mathematical models of online user behaviour which violates rationality. 

He is also interested in applying theories from behavioural economics to model decisions in the online information space. 

His research interests can be thus categorised:

  1. Quantum Cognition
  2. Human Information Interaction
  3. User Modelling

Teaching interests

Sagar's teaching interests include Information Retrieval, Quantum Cognition and Data Science. 

External collaborations

Sagar has external collaborations with:

  1. Professor Peter Bruza's group in Queensland University of Technology, Brisbane, Australia
  2. Qiuchi Li, Benyou Wang and Prayag Tiwari at University of Padua, Italy


TermInformer: unsupervised term mining and analysis in biomedical literature (2020-09-16)
Tiwari, Prayag; Uprety, Sagar; Dehdashti, Shahram and Hossain, M Shamim
Neural computing & applications ((Early Access))

A Survey of Quantum Theory Inspired Approaches to Information Retrieval (2020)
Uprety, Sagar; Gkoumas, Dimitrios and Song, Dawei
ACM Computing Surveys, 53, Article 98(5)

Quantum-Like Structure in Multidimensional Relevance Judgements (2020-04-08)
Uprety, Sagar; Tiwari, Prayag; Dehdashti, Shahram; Fell, Lauren; Song, Dawei; Bruza, Peter and Melucci, Massimo
In: Jose, J.; Yilmaz, E.; Magalhães, J.; Castells, P.; Ferro, N.; Silva, M. and Martins, F. eds. Advances in Information Retrieval. ECIR 2020.. Lecture Notes in Computer Science (pp. 728-742)
ISBN : 978-3-030-45439-5 | Publisher : Springer, Cham

Modelling Dynamic Interactions Between Relevance Dimensions (2019-09-23)
Uprety, Sagar; Dehdashti, Shahram; Fell, Lauren; Bruza, Peter and Song, Dawei
In : 2019 ACM SIGIR International Conference on Theory of Information Retrieval (2-5 Oct, Santa Clara, USA) (pp. 35-42)

Investigating non-classical correlations between decision fused multi-modal documents (2019)
Gkoumas, Dimitrios; Uprety, Sagar and Song, Dawei
In : International Symposium on Quantum Interaction (3 Sep 2019) (pp. 163-176)

Investigating Order Effects in Multidimensional Relevance Judgment using Query Logs (2018-09-10)
Uprety, Sagar and Song, Dawei
In : 2018 ACM SIGIR International Conference on Theory of Information Retrieval (14-17 Sep 2018, Tianjin, China) (pp. 191-194)

Quantum-inspired Complex Word Embedding (2018-07-20)
Li, Qiuchi; Uprety, Sagar; Wang, Benyou and Song, Dawei
In : Third Workshop on Representation Learning for NLP (20 Jul 2018, Melbourne, Australia) (pp. 50-57)

Investigating Bell Inequalities for Multidimensional Relevance Judgments in Information Retrieval (2018-07-11)
Uprety, Sagar; Gkoumas, Dimitrios and Song, Dawei
In : 11th International Conference on Quantum Interaction (QI 2018) (3-5 Sep 2018, Nice, France)

Modeling Multidimensional User Relevance in IR using Vector Spaces (2018)
Uprety, Sagar; Su, Yi; Song, Dawei and Li, Jingfei
In : SIGIR '18 The 41st International ACM SIGIR Conference on Research & Development in Information Retrieval (8-12 Jul 2018, Ann Arbor, MI, USA) (pp. 993-996)

Reconciling Irrational Human Behavior with AI based Decision Making: A Quantum Probabilistic Approach (2018)
Uprety, Sagar and Song, Dawei
In : 1st Workshop on AI and Computational Psychology(CompPsy) (14 Jul 2018, Stockholm, Sweden)