https://abhijith-nagarajan.com/tags/python/Recent content in Python on Abhijith NagarajanHugoen-usMon, 01 Dec 2025 00:00:00 +0000https://abhijith-nagarajan.com/projects/mental-health-chatbot/Sat, 17 May 2025 00:00:00 +0000https://abhijith-nagarajan.com/projects/mental-health-chatbot/An end-to-end retrieval-augmented generation system that grounds a local LLM in peer-reviewed PubMed abstracts to answer questions on the neurochemistry of mental health, evaluated against the BioASQ-13b biomedical QA benchmark.https://abhijith-nagarajan.com/projects/pii-aware-sentiment-pipeline/Sat, 17 May 2025 00:00:00 +0000https://abhijith-nagarajan.com/projects/pii-aware-sentiment-pipeline/A production-style NLP pipeline that classifies Apple-product feedback by sentiment and product topic, with built-in PII redaction and sarcasm-aware sentiment correction. Served through a FastAPI REST API and a Streamlit UI on a swappable, dependency-injected inference pipeline.https://abhijith-nagarajan.com/projects/sherpa-semi-structured-rag/Thu, 19 Dec 2024 00:00:00 +0000https://abhijith-nagarajan.com/projects/sherpa-semi-structured-rag/A semi-structured, non-parametric memory framework for RAG that combines knowledge graphs with a hierarchical vector store. My contributions: Query Classification (heuristics → LLM-bootstrapped labels → fine-tuned BioLinkBERT) and Entity-Relation Extraction (REBEL fine-tuned on BioRED, with FastCoref preprocessing) — landed on REBEL after a long experimental funnel.https://abhijith-nagarajan.com/projects/crop-recommendation-soil-moisture/Thu, 15 Feb 2024 00:00:00 +0000https://abhijith-nagarajan.com/projects/crop-recommendation-soil-moisture/An end-to-end agricultural decision-support project pairing a 22-class crop classifier (Naive Bayes + Random Forest on derived agronomic features) with a soil-moisture data pipeline that computes evapotranspiration from a Penman-Monteith equation, fed by WeatherBit + OpenWeather APIs and persisted to SQLite.https://abhijith-nagarajan.com/projects/loan-defaulter-imbalanced-classification/Mon, 22 Jan 2024 00:00:00 +0000https://abhijith-nagarajan.com/projects/loan-defaulter-imbalanced-classification/A systematic study of imbalanced classification techniques on the Home Credit Default Risk dataset (91/9 class split). Final pipeline achieved 0.55 PR-AUC with Logistic Regression and HistGradientBoosting, combining class weighting and threshold tuning. Compared five approaches × three classifiers; Optuna for hyperparameter search; F2 and PR-AUC as the evaluation lens.https://abhijith-nagarajan.com/projects/ipl-2022-plotly-analysis/Wed, 15 Jun 2022 00:00:00 +0000https://abhijith-nagarajan.com/projects/ipl-2022-plotly-analysis/A storytelling EDA of the 2022 Indian Premier League season — visualizing toss-decision impact, powerplay performance per team, and batsmen / bowler effectiveness across the three phases of a T20 innings. Built entirely in Plotly (subplots, box plots, scatter quadrants) and published as a Medium article.https://abhijith-nagarajan.com/experience/compfly-ai/Mon, 01 Dec 2025 00:00:00 +0000https://abhijith-nagarajan.com/experience/compfly-ai/Developed AI evaluation frameworks, red-teaming workflows, and inference systems to improve the reliability, safety, and robustness of agentic AI applications.https://abhijith-nagarajan.com/experience/bayer-intern/Wed, 01 May 2024 00:00:00 +0000https://abhijith-nagarajan.com/experience/bayer-intern/Implemented predictive maintenance analytics and failure-analysis workflows to improve field equipment reliability across global sites.https://abhijith-nagarajan.com/experience/uiuc-masters/Tue, 01 Aug 2023 00:00:00 +0000https://abhijith-nagarajan.com/experience/uiuc-masters/LLM research on Information Retrieval focused on entity relation extraction.https://abhijith-nagarajan.com/experience/hp-inc/Wed, 01 Sep 2021 00:00:00 +0000https://abhijith-nagarajan.com/experience/hp-inc/Built UiPath and OCR-based automation workflows across supply chain, customer support, finance, and marketing operations.https://abhijith-nagarajan.com/experience/sastra-bachelors/Sat, 01 Jul 2017 00:00:00 +0000https://abhijith-nagarajan.com/experience/sastra-bachelors/Computer Vision research on video captioning for assistive devices.