Research Interests

  • Natural language processing
  • Question answering using knowledge bases and commonsense
  • Argumentation mining
  • Sarcasm detection
  • Sentiment analysis and emotion recognition
  • Understanding affect in conversations
  • Personalized, empathetic dialogue generation
  • Multimodal machine learning


  • Ph.D. in Computer Science and Mathematics, Thesis: Novel symbolic and machine-learning approaches for text-based and multimodal sentiment analysis, Feb 2014 - June 2017, University of Stirling, Scotland, UK
  • Bachelor of Engineering (B.E.) in Computer Science and Engineering, Aug 2009 - Dec 2013, Jadavpur University, India

Honorific Position

  • Adjunct Faculty, Indraprastha Institute of Information Technology (IIITD), India, Aug 2018 - Present


  • Presidential Postdoctoral Fellowship (early career research award), NTU, Singapore (600 applicants, 12 total fellowships)
  • Emerald Citations of Excellence (
  • IMPACT International Research Scholarship Award, University of Stirling
  • Tata Consultancy Best Undergraduate Software Project Award: gold medal, Jadavpur University
  • Best student paper, MICAI 2012, Mexico

Editorship & Chair

  • Editor, Information Fusion journal
  • Area chair at NAACL 2019, EMNLP 2019, EMNLP 2020, ACL 2020
  • Publicity chair at *SEM 2019
  • Co-guest editor, Affect Recognition in Multimodal Language, Cognitive Computation, 2020
  • Co-guest editor of special issue of IEEE Computational Intelligence Magazine on Computational Intelligence for Affective Computing and Sentiment Analysis (CIACSA)
  • Co-guest editor for the (Springer) Cognitive Computation journal (Impact Factor: 3.44) Special Issue on “Multimodal natural language processing for Cybersecurity applications”, 2018-19
  • Co-chair of Advancing Artificial Intelligence Understanding of Human Multimodal Language workshop in conjunction with ACL 2018
  • Co-chair of MR2AMC workshop in conjunction with ICMR 2018
  • Organized SENTIRE workshop in conjunction with ICDM 2017

PC Membership


Reviewer of Journals

  • Knowledge and Information Systems (Impact Factor: 2.24)
  • IEEE Transactions on Neural Networks and Learning Systems (Impact Factor: 6.1)
  • Expert Systems with Applications (Impact Factor: 3.7)
  • Knowledge Based Systems (Impact Factor: 4.3)
  • Natural Language Engineering (Impact Factor: 1.0)
  • IEEE Intelligent Systems (Impact Factor: 2.3)
  • IEEE Computational Intelligence Magazine (Impact Factor: 6.3)
  • IEEE Transaction on Affective Computing (Impact Factor: 3.1)
  • Information Processing & Management (Impact Factor: 3.4)
  • Cognitive Computation (Impact Factor: 3.4)
  • Artificial Intelligence Review (Impact Factor: 3.8)

Recognition & Achievements

  • Senior Member, Brain Science Foundation
  • Honorary Member, NDS lab, University of Oxford
  • Honorary Member, Brain Science Foundation
  • Highly Cited Papers (in 1% most cited in Computer Science in year): 3
  • Highly Cited Papers (in 0.1% most cited in Computer Science in year): 1

Keynote & Invited Talks

  • Keynote talk, on Emotion Recognition in Conversation: Research Challenges, Negative Results, and Benchmarks, SocialNLP, IJCAI 2019, Macau
  • Invited talk, on the Role of Context in Natural Language Processing, University of Michigan, USA
  • Invited talk, on Emotion Recognition in Conversation: Research Challenges, Negative Results, and Benchmarks, NUS, Singapore
  • Invited talk, on the Evolving Sentiment Analysis, NTU, Singapore
  • Keynote Speaker, on Multimodal sentiment analysis, CICLing 2018, Hanoi, Vietnam
  • Invited Speaker, on Aspect extraction from product reviews, Deep Learning Finance Summit 2018, Singapore

News Coverage


  • MultiComp Lab, CMU, USA
  • Language and Information Technologies, University of Michigan, USA
  • Multimedia Research Lab, NUS, Singapore
  • Adobe Research Lab, Bangalore, India
  • NDS Lab, Oxford University, UK
  • NLP Lab, CIC, IPN, Mexico
  • NLP Lab, IITB, Mumbai, India


  • One of the most productive authors in sentiment analysis research from 2000 to 2015 (
  • One of the most prolific and impactful authors in sentiment analysis from 2003 to 2016 (


  • K-EMERGE: Knowledge Extraction, Modelling, and Explainable Reasoning for General Expertise, AME research grant, Feb. 2020 - Feb. 2023, Grant Value: S$910K
  • Geopolitical Question Answering, DSO research grant, Feb. 2020 - Feb. 2022, Grant Value: S$800K
  • Multimodal personalized affective dialogue systems, Sept 2019 - Sept 2022, Grant Value: S$100K
  • Multimodal personalized affective dialogue systems, NTU Presidential Postdoctoral Research Grant, Sept. 2018 - Sept. 2020, Grant Value: S$200K


  • Computational Data Science, ISTD, SUTD, Singapore


  • Deepanway Ghosal, ISTD, SUTD
  • Hui Chen, ISTD, SUTD
  • Shunqi Wang, ISTD, SUTD
  • Rishabh Bharadwaj, ISTD, SUTD
  • Qian Chen, SCSE, NTU
  • Devamanyu Hazarika, SoC, NUS