Rohit Mujumdar

rohit dot mujumdar at yahoo dot com


πŸ‘¨β€πŸ’» I am Software Engineer in the Business Services Layer organization of NCR Corporation, Atlanta, GA. I graduated from Georgia Institute of Technology in Spring 2021 with an MS in Computer Science and a specialization in Machine Learning.

πŸ”¬ I collaborated with Prof. Srijan Kumar in developing a reputation system for Birdwatch, Twitter’s new notes-based, community-driven feature to address misinformation, which was successful in influencing the Birdwatch platform. Our paper based on this work got published in ASONAM'21.

πŸš€ I interned with the Cloud Services Design Analytics group at IBM Research. I filed a patent based on my work and also authored a poster, which won the Best Poster (Honorable Mention) award at INFORMS'20

πŸ‹ Prior to commencing my MS degree in Fall 2019, I worked as an NLP Research Engineer at Froot Research. As one of the first few employees of an early-stage AI start-up, I was mentored by the founder Amit Gautam.

πŸ§‘β€πŸŽ“ I earned a Bachelor's degree in Computer Engineering in 2017 from Vishwakarma Institute of Technology, Pune, where I was advised by Dr. Manasi Patwardhan.

πŸŽ₯ I run a video podcast, 'Talking To The Moon', where I interview people across professions and walks of life and listen to the stories they have to tell. More about the idea behind the vodcast in this article.

πŸ’ƒπŸ» Dancing is one of my hobbies (a few of my dance videos). I am an avid practitioner of Yoga and an ardent promoter of mental health awareness.

🎀 I am an active member of the iNCRedible Toastmasters Club. I am on Level 2 of the Presentation Mastery pathway.

πŸ“§ Feel free to drop me an email or DM me on Twitter; I love making new friends and am always open to interesting conversations!

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Research Interests

My research interests lie in Applied Machine Learning and Data Science, particularly in Computational Social Science and Knowledge Graphs.

News
Publications
3DSP Overcoming Language Disparity in Online Content Classification with Multimodal Learning
Gaurav Verma, Rohit Mujumdar, Zijie J. Wang, Munmun De Choudhury, Srijan Kumar
Keywords: social media, multimodal, language disparity, language translation
ICWSM 2022

We investigate the disparity between English and non-English language models and show that detection frame-works based on pre-trained large language models like BERT and multilingual-BERT systematically perform better on the English language. We demonstrate the promise of incorporating the information contained in images via multimodal machine learning to address this disparity.

paper
3DSP HawkEye: A Robust Reputation System for Community-based Counter-Misinformation
Rohit Mujumdar, Srijan Kumar
Keywords: social network analysis, misinformation, graph algorithms, adverserial attack
ASONAM 2021

We investigate the robustness of Birdwatch against adversaries and show that the current Birdwatch system is vulnerable to manipulation attacks. To overcome this vulnerability, we develop HawkEye, a cold-start-aware graphbased recursive algorithm, and show that it is more robust to such attacks.

paper | code | video
3DSP A Heuristic Approach To Compute Service Request Resolution Time (Poster)
Rohit Mujumdar, Pawan Chowdhary, Shubhi Asthana.
Keywords: time series analysis, operations research, ticket resolution, predictive model
INFORMS 2020, Best Poster Award (Honorable Mention Award)

We use statistical analyses and regression-based techniques to predict the resolution times of incident tickets. We employ techniques like dynamic rolling window, auto-regressive window-flip and artificial data creation handle data eccentricities.

poster | video
Selected Projects
3DSP Do Scientific Ideas Originating from more Prestigious Universities Spread Faster?
Rohit Mujumdar, David Kartchner
(Data Science for Epidemiology, Fall 2020. Georgia Tech)
Keywords: epidemiology, microsoft academic graph, natural language processing, epistemiology

  • Investigated the imbalance in the spread of ideas across academic research networks caused due to differences in academic prestige using disease spread models adapted from epidemiology.
  • Assessed if idea spread is driven by connectivity amongst original authors or the explicit prestige of their institution
  • website | report | code | software
    3DSP Can Machines Detect if you’re a Jerk?
    Rohit Mujumdar, Parvathy Sarat, Prathik Kaundinya, Sahith Dambekodi
    (Deep Learning, Fall 2020. Georgia Tech)
    Keywords: natural language processing, deep learning, ai ethics, reddit, computational social science

  • Used language models to assess if we can replicate the sentiments shared by Redditors and classify the Redditor's original post according to the verdict that was declared by rest of the Redditors.
  • Attempt to understand how a machine performs in a task that is entirely subjective but is possibly objective
  • report | code
    3DSP Conference Paper Acceptance Prediction
    Rohit Mujumdar, Rohan Goel, Arthita Ghosh, Shravani Sistla, Neha Pande.
    (Machine Learning, Spring 2020. Georgia Tech)
    Keywords: natural language processing, machine learning, feature engineering, peer read dataset

  • Investigated the role of peripheral features of research papers in their potential acceptability
  • Devised several innovative features such as abstract novelty and complexity, research strength score, title word-cloud etc
  • report | code | video
    3DSP Semantic Search Engine using a Dynamic Ontology
    Rohit Mujumdar, Poshraj Sharma, Pranjal Patil, Akanksha Patil, Dr Manasi Patwardhan.
    Keywords: natural language processing, semantic search, ontology, triplet extraction, entity-relation-entity, phrase2vec, education technology
    (Undergrad Capstone Project, 2016-17, VIT Pune)

  • Developed an e-learning platform for government schools by implementing a dynamic science ontology to store triplets (Entity-Relation-Entity) extracted from web-scraped data.
  • Devised a Phrase2Vec model driven similarity-scoring algorithm to replace similar Relations by a representative Relation.
  • report | video | code
    Leadership

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    "In the midst of winter, I found there was, within me, an invincible summer." ~ Albert Camus
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