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


Rishiraj Saha Roy is a Senior Researcher at the Max Planck Institute for Informatics (MPII), Saarbruecken, Germany, leading the research group on Question Answering, that focuses on robust and interpretable solutions for answering natural language questions over structured and unstructured data. He belongs to the Databases and Information Systems Department, that is headed by MPII director Prof. Gerhard Weikum. His current research focus is on question-answering over structured and unstructured sources of knowledge. In general, he is really passionate about applying language technology in and around text-based search. Prior to joining MPII, he worked for one and a half years as a Computer Scientist at Adobe Research, Bangalore, India. At Adobe, he worked on various text mining use cases involving the Adobe Marketing Cloud and the Adobe Document Cloud product lines. He completed his 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 his PhD, he explored Web search query understanding, working on aspects like query segmentation, query intent discovery, and query complexity analysis. He did his masters' at IIT Roorkee (a beautiul town near Hardwar, India) and his bachelors' at Jadavpur University, Kolkata, India. He was born and brought up in the City of Joy. When not working, he can often be found poring over all kinds of word and logic puzzles.

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Research Interests

Selected Publications

[Google Scholar] [DBLP]


Employment Positions



Professional Activities

  • Conference program committees: AAAI (2020), SIGIR (2019), NAACL-HLT (2019), EMNLP (2017 - 2019), IJCNLP (2017)
  • Publications Chair of the CoDS-COMAD 2020, 5 - 7 January 2020, Hyderabad, India.
  • Co-organizer of the IR Track at KSE 2019, 24 - 26 October 2019, Da Nang, Vietnam. (with Md. Zia Ullah)
  • 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)
  • 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 and Data Mining, Computer Science, Saarland University: Winter Semester 2019/2020 [9 ECTS] (with Andrew Yates)


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