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sandeep848/README.md

Hi, I'm Sandeep Das

MSc Artificial Intelligence and Robotics · University of Technology Nuremberg

I build practical machine-learning systems across computer vision, geospatial intelligence, generative AI, data engineering and robotics. My work focuses on reproducible experiments, real-world robustness and deployable applications—not only model training.

Portfolio LinkedIn Location

Current focus

  • Robust computer vision under compression and distribution shift
  • Efficient deep learning for deployment-constrained systems
  • Geospatial machine learning and urban-change analysis
  • LLM applications, RAG and agentic workflows
  • Reproducible research pipelines and evaluation

Featured projects

Project What it demonstrates Stack
Deepfake Detection Under Real-World Degradation Leakage-safe benchmarking across compression, resizing, blur and compound social-media transformations PyTorch, EfficientNet-B0, Grad-CAM, pytest
European Image Geolocation Sub-5M-parameter hierarchical geolocation with spherical decoding and offline inference PyTorch, RegNet-Y, GeM, scikit-learn
Nuremberg Land-Cover Intelligence Sentinel-2 land-cover composition and change estimation over a 100 m urban grid LightGBM, GeoPandas, Rasterio, Streamlit
Redshift Streaming Analytics Reproducible streaming analytics with local and cloud storage paths Kafka, DuckDB, Redshift, Docker, Streamlit
Dual-Adapter LoRA Style Tuning Parameter-efficient Stable Diffusion adaptation with custom-token gradient masking Diffusers, PEFT, PyTorch
SpeechText Browser audio transcription and persistence on Google Cloud Node.js, Speech-to-Text, Firestore, App Engine

Selected results

  • Deepfake robustness: evaluated lightweight detection across realistic degradation tiers with ROC-AUC, calibration error and bootstrap confidence intervals.
  • Image geolocation: 150.67 km validation median error using a single 4.63M-parameter model trained from scratch.
  • Land-cover estimation: built-up proportion spatial CV of 0.0489 MAE, 0.0979 RMSE and 0.9146 R².
  • Research publication: Deep Gesture Interpretation for American Sign Language, using EfficientNet-B0 for 29-class recognition.

Technical toolkit

Languages: Python, C++, C, JavaScript, SQL
Machine learning: PyTorch, TensorFlow, Keras, scikit-learn, LightGBM, NumPy, Pandas
Computer vision: EfficientNet, ConvNeXt, RegNet, OpenCV, Grad-CAM, robustness evaluation
LLM systems: Hugging Face, LangChain, RAG, FAISS, agentic workflows
Data engineering: Kafka, DuckDB, ClickHouse, PostgreSQL, dbt
Applications and tooling: Docker, Streamlit, FastAPI, React, Git, Linux

Experience

Previously worked as an AI and Automation R&D Intern at ICAR–NBSS&LUP, developing Python APIs and data-access automation. I am currently pursuing an MSc in Artificial Intelligence and Robotics at UTN and am interested in working-student and research opportunities involving applied AI, computer vision, speech technology and robotics.

What I value

  • Measurements that reflect deployment conditions
  • Clear baselines and honest limitations
  • Leakage-safe evaluation
  • Reproducible commands and configurations
  • Small, understandable systems before unnecessary complexity

Connect

Popular repositories Loading

  1. agentic-multi-tool-chatbot agentic-multi-tool-chatbot Public

    Research assistant that routes questions across uploaded PDFs, web search, arXiv and Wikipedia.

    Python

  2. langchain-sqlite-assistant langchain-sqlite-assistant Public

    Read-only natural-language SQLite analytics with deterministic SQL validation and audit output.

    Python

  3. langchain-text-summarizer langchain-text-summarizer Public

    Map-reduce summarization for PDFs, webpages and YouTube transcripts with bounded chunking.

    Jupyter Notebook

  4. langchain-math-problem-solver langchain-math-problem-solver Public

    Symbolic mathematics solver using SymPy verification before optional LLM explanations.

    Python

  5. codellama-dynamic-prompt-handler codellama-dynamic-prompt-handler Public

    Local CodeLlama workbench for debugging, testing, refactoring, explanation and security review.

    Python

  6. nvidia-nim-rag-assistant nvidia-nim-rag-assistant Public

    Hybrid dense and lexical document retrieval with NVIDIA NIM and page-level citations.

    Python