About Me

I am a senior research fellow at Indian Statistical Institute, Kolkata. My supervisor is Dr. Mandar Mitra, Associate Professor of Computer and Communication Science Division, Indian Statistical Institute, Kolkata.


Word Embedding for Information Retrieval

Bibliographic Citation Recommendation

Knowledge Graph

Retrieval Functions

Relevance Feedback



  • Debasis Ganguly, Haithem Afli, Dwaipayan Roy. Word Embedding based Semantic Cross-Lingual Document Alignment in Comparable Corpora. FIRE 2018 [Link]
  • Dwaipayan Roy, Debasis Ganguly, Sumit Bhatia, Srikanta Bedathur, Mandar Mitra. Using Word Embeddings for Information Retrieval: How Collection and Term Normalization Choices Affect Performance. CIKM 2018 [Link] [Preprint]
  • Dwaipayan Roy, Debasis Ganguly, Mandar Mitra, Gareth J.F. Jones. Estimating Gaussian Mixture Models in the Local Neighbourhood of Embedded Word Vectors for Query Performance Prediction. Elsevier IP\&M [Link] [Preprint]
  • Dwaipayan Roy, Mandar Mitra, Debasis Ganguly. To Clean or not to Clean: Document Preprocessing and Reproducibility. ACM JDIQ [Link] [Preprint] [Code]
  • Dwaipayan Roy. Word Embedding based Approaches for Information Retrieval. FDIA 2017 [Link]
  • Dwaipayan Roy. An Improved Test Collection and Baselines for Bibliographic Citation Recommendation. CIKM 2017 [Link] [Preprint] [Data]
  • Dwaipayan Roy, Kunal Ray, Mandar Mitra. From a Scholarly Big Dataset to a Test Collection for Bibliographic Citation Recommendation. AAAI Workshop: Scholarly Big Data 2016: 705-710 [Link]
  • Dwaipayan Roy, Debasis Ganguly, Mandar Mitra, Gareth J. F. Jones. Word Vector Compositionality based Relevance Feedback using Kernel Density Estimation. CIKM 2016: 1281-1290 [Link]
  • Dwaipayan Roy, Debjyoti Paul, Mandar Mitra, Utpal Garain. Using Word Embeddings for Automatic Query Expansion. [Link]
  • Dwaipayan Roy, Debasis Ganguly, Mandar Mitra, Gareth J. F. Jones. Representing Documents and Queries as Sets of Word Embedded Vectors for Information Retrieval. [Link - soon] [Preprint]
  • Debasis Ganguly, Dwaipayan Roy, Mandar Mitra, Gareth J. F. Jones. Word Embedding based Generalized Language Model for Information Retrieval. SIGIR 2015: 795-798 [Link] [Preprint]
  • Ayan Bandyopadhyay, Dwaipayan Roy, Mandar Mitra, Sanjay Saha. Named Entity Recognition from Tweets. LWA 2014 [Link]
  • Dwaipayan Roy, Ayan Bandyopadhyay, Mandar Mitra. A Simple Context Dependent Suggestion System. TREC 2013 [Link]
  • Jamuna Kanta Sing, Dwaipayan Roy, Dipak Kumar Basu, Mita Nasipuri. Generalized Diagonal 2D FLDA for Efficient Face Recognition. International Conference on Communications, Devices and Intelligent Systems (CODIS), 2012 [Link]
  • Dwaipayan Roy. Generalized Diagonal Fisher Linear Discriminant Analysis for Efficient Face Recognition. Master's Thesis, submitted to Jadavpur University, Kolkata, 2012 [Link]
  • Curriculum Vitae

    I did my bachelor's from Ramakrishna Mission Vidyamandira, Belurmath, and master's from Jadavpur University, Kolkata respectively in the year 2009 and 2012. I worked as a Junior Research Fellow at Indian Statistical Institute (ISI), Kolkata from 2012 to 2014. Presently, I am a Senior Research Fellow at ISI, Kolkata, working under the supervision of Dr. Mandar Mitra.



    IR Lab, CVPR Unit
    Indian Statistical Institute, Kolkata
    203, B.T. Road, Kolkata
    India - 700108