Rishiraj Saha Roy


Rishiraj Saha Roy

Rishiraj Saha Roy

Max-Planck-Institut für Informatik
Department 5: Databases and Information Systems
 office: Campus E1 4, Room 407
Saarland Informatics Campus
66123 Saarbrücken
 email: Get my email address via email
 phone: +49 681 9325-5007

What's New?


I am currently a post-doctoral researcher working with Prof. Gerhard Weikum, in the Databases and Information Systems Group at the Max Planck Institute for Informatics (MPII), Saarbruecken, Germany. My current research areas include question-answering over knowledge bases and text, and user-oriented privacy and transparency in online forums. In general, I am really passionate about applying language technology in and around text-based search. Prior to MPII, I worked for one and a half years as a Computer Scientist at Adobe Research, Bangalore, India. At Adobe, I worked on various text mining use cases involving the Adobe Marketing Cloud and the Adobe Document Cloud product lines. I completed my PhD as a Microsoft Research India PhD Fellow from the Indian Institute of Technology (IIT) Kharagpur, working under the supervision of Prof. Niloy Ganguly (IIT Kharagpur) and Dr. Monojit Choudhury (Microsoft Research India). During my PhD, I explored Web search query understanding, working on aspects like query segmentation, query intent discovery, and query complexity analysis. I did my masters' at IIT Roorkee (a beautiul town near Hardwar, India) and my bachelors' at Jadavpur University, Kolkata, India. I was born and brought up in the City of Joy. When not working, I can often be found poring over all kinds of word and logic puzzles.

Research Interests

Selected Publications

[Google Scholar] [DBLP]


Employment Positions



Professional Activities

  • Publications Chair of the CoDS-COMAD 2020, 5 - 7 January 2020.
  • Co-editor of Dynamics On and Of Complex Networks III, Springer, 16 June 2019 (with Fakhteh Ghanbarnejad, Fariba Karimi, Jean-Charles Delvenne, and Bivas Mitra).
  • Co-organizer of the DOOCN 2019, 28 May 2019, Vermont, USA. (with Fakhteh Ghanbarnejad, Parantapa Bhattacharya, and Sandipan Sikdar)
  • Co-organizer of the COMSNETS SN 2019, 11 January 2019, Bangalore, India. (with Saptarshi Ghosh)
  • Publications Chair of the CoDS-COMAD 2019, 3 - 5 January 2019.
  • Co-organizer of the DOOCN 2018, 27 September 2018, Thessaloniki, Greece. (with Jean-Charles Delvenne, Fakhteh Ghanbarnejad, Fariba Karimi, Bivas Mitra, and Parantapa Bhattacharya)
  • Co-organizer of the COMSNETS SN 2018, 7 January 2018, Bangalore, India. (with Moumita Sinha)
  • Co-organizer of the DOOCN 2017, 19 June 2017, Indianapolis, USA. (with Jean-Charles Delvenne, Fakhteh Ghanbarnejad, Fariba Karimi, and Bivas Mitra)
  • Conference program committees: SIGIR (2019), NAACL-HLT (2019), EMNLP (2017, 2018), IJCNLP (2017), FIRE (2016, 2017, 2018)
  • Mentorships: 2 Masters' students [MPI for Informatics (2)], 2 Bachelors' students [MPI for Informatics (2)], and 7 interns [Adobe Research India (5) and MPI for Informatics (2)]
  • Co-organizer of the shared task on "Transliterated Search" at the FIRE 2013, 4 – 6 December 2013, New Delhi, India. (with Monojit Choudhury, Prasenjit Majumder, and Komal Agarwal)



  • Information Retrieval, CSE, IIT Kharagpur: Autumn 2013, Autumn 2012, Autumn 2011
  • Complex Networks, CSE, IIT Kharagpur: Spring 2013, Spring 2012
  • Programming and Data Structures, CSE, IIT Kharagpur: Spring 2011, Autumn 2010
  • Data Mining, ECE, IIT Roorkee: Spring 2009
  • Object Oriented Programming, ECE, IIT Roorkee: Autumn 2008


  • Cricket
  • Photography
  • Table Tennis
  • Word puzzles
  • Quizzing
  • Philately
  • Swimming