Open Source Softwares

Software, Tools & Packages

Below is a curated collection of software, packages, and tools I have developed or contributed to — resulting from various academic and personal projects.

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🧰 R Packages

• ggkodom ggkodom is a ggplot2 extension for visualizing individual-level longitudinal trajectories.
  • 📦 CRAN: https://cran.r-project.org/web/packages/ggkodom/index.html
  • 📘 Vignette: https://subroy13.github.io/ggkodom/
  • 💻 GitHub: https://github.com/subroy13/ggkodom
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• rsvddpd Robust Singular Value Decomposition using the Minimum Density Power Divergence Estimator (MDPDE).
  • 📦 CRAN: https://cran.r-project.org/web/packages/rsvddpd/index.html
  • 📘 Vignette: https://cran.r-project.org/web/packages/rsvddpd/vignettes/rSVDdpd-intro.html
  • 💻 GitHub: https://github.com/subroy13/rsvddpd
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🧩 Python Packages

• handanim A Python library for programmatically generating hand-drawn sketch-style animations.
  Ideal for instructional videos, visual explanations, and stylized presentations.

  • 📘 Docs: https://subroy13.github.io/handanim
  • 💻 GitHub: https://github.com/subroy13/handanim
  • 📦 PyPI: https://pypi.org/project/handanim
    
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Important

I am actively looking for collaboration in the handanim project. If building hand-drawn sketch-style animations videos using reproducible Python code sounds interesting to you, please reach out to me by email! or create an issue in Github

• decompy A Python package implementing several robust matrix decomposition algorithms, supporting outlier-resistant SVD/PCA pipelines.
  • 📦 PyPI: https://pypi.org/project/decompy
    
  • 💻 GitHub: https://github.com/subroy13/decompy
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• roufcp Robust gradual changepoint detection in time series using Rough-Fuzzy set theory. Useful for weak or soft transitions where classic CPD fails.
  • 📦 PyPI: https://pypi.org/project/roufcp
    
  • 💻 GitHub: https://github.com/subroy13/roufcp
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Others

• callgrind-reader A TypeScript library to parse callgrind-like profiling output, extract metrics, and integrate into analysis tools.
  • 📦 npm: https://www.npmjs.com/package/callgrind-reader
    
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• mathaddons.sty A LaTeX package for writing research papers containing multiple useful mathematical commands. Click here to download.

🛠️ Projects

Below are some applications and experimental systems built for research, teaching, or exploration.

• Multi PDF Querybot Upload multiple PDFs and interactively question them using an in-memory vector-store-based RAG pipeline.
  • 🔍 Multi-document semantic search
    
  • 💬 LLM-powered chatbot interface
    
  • ⚡ Fast, memory-based indexing
  • Repo: https://github.com/subroy13/multi-pdf-querybot
• ChronoModeler A streamlit application to perform simulation experiments with different models on time series data, using a blueprint-based system. Useful for non-stat-savvy people to get a quick sense of how time series modelling works.
  • Repo: https://github.com/subroy13/chronomodeler
• PWDMGR A lightweight console-based password manager built in Python.
  • Repo: https://github.com/subroy13/pwdmgr
• Covid-19 Tracker A forecasting & resource-support dashboard for Covid-19, sponsored by IIM Vishakhapatnam.
  • 📈 Real-time case tracking
    
  • 🔮 Forecasting visualizations
    
  • 🏥 Resource management tools
    
  • Link: http://covid-tracker.iimv.ac.in:3939/covid/
• Seq2Seq Attention-Based Chatbot Classic neural chatbot trained on the Cornell Movie Dialogs Corpus, using a Seq2Seq architecture with Bahdanau attention.
  • Repo: https://github.com/subroy13/seq2seq-attention-bot
• N-gram Text Predictor A simple text prediction engine developed for the JHU Data Science Specialization (Coursera).
  • Repo: https://subroy13.shinyapps.io/TextPredictionSystem/

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Want to Collaborate?

If you’d like to explore or contribute to any of these tools, feel free to reach out here!