PhD Scholar, Department of CSE, IIT Bombay.
TCS Research Scholar (Research funding Agency - TCS)
Interested in the nuances of languages, especially Indian languages and aim to take forward the NLP research for Indian languages, using insights from the linguistic perspective, instead of relying on large amount of data.
"Progress lies not in enhancing 'what is' , but in advancing towards 'what will be'."
Current Projects
Natural Language Translation mission (NLTM)(MeitY) - Sanskrit-based Interlingua for Machine Translation
BharatGen (Multilingual Tokenization for Indian Languages, Reasoning capabilities of Multilingual LLMs)
Education
PhD (Pursuing), Dept. of CSE, IIT Bombay (Jan 2022- present)
Diploma in Sanskrit Language, NFSE, CSU, 2024
Certification in Sanskrit Language, NFSE, CSU (2023)
MTech - Dept. of CSE, NIT Durgapur (2018-20)
BE - CSE, GEC Hassan (2013-17)
Courses taken:
Spring semester (2021 - 22)
Deep Learning for NLP (CS772) - Prof. Pushpak Bhattacharya
Automatic Speech Recognition (CS753) - Prof. Preethi Jyothi
Autumn semester (2022)
Speech, Natural Language Processing and the Web (CS626) - Prof. Pushpak Bhattacharya
Critical Thinking in Digital Age(CS780) - Prof. Om Damani
Seminar - "Data programming for Dependency Parsing" (Guide - Prof. Ganesh Ramakrishnan
Spring semester(2022-23) - Auditing course
Introduction to Paninian Grammar (HS401) - Prof. Malhar A. Kulkarni
Experience
Assistant Professor, BNM Institute of Technology, Bangalore, Karnataka. (2020-21)
C Programming for Problem Solving
C Programming Lab
Mobile Application Development Lab
Teaching Assistant (CSE, IIT Bombay)
Spring 2026 - CS320 - Implementation of Programming Languages (Theory + Lab) - Prof. Uday P Khedker
Autumn 2023 - CS101 - Computer Programming and Utilization (Theory + Lab) - Prof. Suyash Awate
Spring 2023 - CS899 - Communication Skills - Prof. Varsha Apte
Autumn 2022 - CS101 - Computer Programming and Utilization (Theory + Lab) - Prof. Ajith Rajwade
Spring 2022 - CS152/154 - Abstractions and Paradigms for Programming - Prof. Rishikesh Joshi
Teaching Assistant (CSE, NIT Durgapur)
Data Structures lab (2019-20)
Image Processing lab (2019)
Artificial Intelligence lab (2019)
Other Professional Roles
Organising Committee Member, 1st Workshop on BHASHA: Benchmarks, Harmonization, Annotation, and Standardization for Human-Centric AI in Indian Languages, Co-located with IJCNLP-AACL 2025.
Technical Program Committee and Organising Committee Member, RISC2025, IIT Bombay
Reviewer - ACL ARR Dec 2024 - Present , CoNLL 2024-25, BEA 2025
Reviewer - IEEE Bombay Section Signature Conference (IBSSC 2022) - (Included in the top 15 reviewers list for the conference)
External examiner for NPTEL course "Problem solving through Programming in C", College of Engineering Pune (2022).
Volunteered and coordinated MS/Mtech interview process, CSE, IITB 2024 admissions.
Co-guiding
RnD Projects (IIT Bombay) - Adyasha Patra (BTech 3), Saketh (BTech 4)
Publications
PhD Outcomes
International Conferences
Maharaj Brahma, N J Karthika, Rajat Verma, Nagasai Saketh Naidu, Rohit Saluja, Maunendra Sankar Desarkar, Ganesh Ramakrishnan. "Multilingual Tokenization through the Lens of Indian Languages: Challenges and Insights". 64th Annual Meeting of the Association for Computational Linguistics, San Diego, USA.
Brahma, Maharaj, N. J. Karthika, Atul Singh, Devaraj Adiga, Smruti Bhate, Ganesh Ramakrishnan, Rohit Saluja, and Maunendra Sankar Desarkar. "Morphtok: Morphologically grounded tokenization for indian languages." arXiv preprint arXiv:2504.10335 (2025). (ICML25 Workshop - TokShop)
Karthika N J, Krishnakant Bhatt, Ganesh Ramakrishnan, and Preethi Jyothi. 2025. LEVOS: Leveraging Vocabulary Overlap with Sanskrit to Generate Technical Lexicons in Indian Languages. In Proceedings of the 20th Workshop on Innovative Use of NLP for Building Educational Applications (BEA 2025), pages 258–265, Vienna, Austria. Association for Computational Linguistics.
Ayush Maheshwari, Atul Kumar Singh, N J Karthika, Krishnakant Bhatt, Preethi Jyothi, and Ganesh Ramakrishnan. 2025. LexGen: Domain-aware Multilingual Lexicon Generation. In Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), pages 7364–7375, Vienna, Austria. Association for Computational Linguistics.
Pramit Bhattacharyya, Karthika N J, Hrishikesh Terdalkar, Manoj Balaji Jagadeeshan, Shubham Kumar Nigam, Arvapalli Sai Susmitha, Arnab Bhattacharya. Findings of the IndicGEC and IndicWG Shared Task at BHASHA 2025. In Proceedings of the 1st Workshop on Benchmarks, Harmonization, Annotation, and Standardization for Human-Centric AI in Indian Languages (BHASHA 2025), Mumbai, India, Co-located with IJCNLP-AACL 2025.
Book
Dangarikar Chaitali., Bhattacharya A., Karthika N. J., Terdalkar H. , Bhattacharyya P., Kulkarni A., Lakkundi C. S., Ramakrishnan G., Shivani V. Samanvaya: An Interlingua for Unity of Indian Languages, October 2024. Central Sanskrit University. New Delhi. Semantically Cohesive Word Grouping in Indian Languages
Preprints (arxiv)
Karthika, N.J., Patra, A., Naidu, N.S., Bhattacharya, A., Ramakrishnan, G. and Dangarikar, C., 2025. Semantically cohesive word grouping in indian languages. arXiv preprint arXiv:2501.03988.
Singh, V., Krishna, A., Karthika, N.J., and Ramakrishnan, G., 2024. A three-pronged approach to cross-lingual adaptation with multilingual llms. arXiv preprint arXiv:2406.17377.
MTech Outcomes
Recent Developments in Pedestrian Detection, (ICCCIS-2019)(IEEE)
Addressing False Positives in Pedestrian Detection (ESIC-2020)(Springer)
Languages and scripts known
Malayalam (Native) (മലയാളം) - Understand, Read, Write
Kannada (Intermediate) (ಕನ್ನಡ) - Understand, Read
Hindi (Proficient) ( हिन्दी ) - Understand, Read, Write
English (Proficient) - Understand, Read, Write
Sanskrit (Beginner - Level 3) (संस्कृतम्) - Understand, Read, Write
French (Beginner - Level1)
