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sohenpatel22/README.md

Hi, I'm Sohen

MEng student at the University of Toronto (Data Analytics and Machine Learning). I build agentic and generative AI systems and measure them: retrieval ablations, golden sets, LLM-judge metrics and CI gates, rather than demos alone.

Selected work

Market Research Agent (live demo)

A LangGraph agent over SEC filings and stock prices with hybrid retrieval, a cross-encoder reranker, trained volatility forecasters, a judge-and-retry loop, Langfuse tracing and an MCP server. The cross-encoder rerank lifted NDCG@6 from 0.44 to 0.56, faithfulness is 0.95 on a 99-question golden set, and cost is about $0.001 per question.

Consulting Workplan Agent

A multi-agent system that turns a client brief into a work breakdown structure, RAID log, RACI matrix and weekly status report, with a human-in-the-loop revision cycle and an offline demo mode.

ASL Fingerspelling Recognition (live demo)

Real-time fingerspelling to text using MediaPipe and a Conformer-Transformer, with CI and a hosted demo.

Two-Stage Recommendation System

Retrieval plus LambdaRank re-ranking pipeline on MovieLens 100K, compared against collaborative filtering baselines.

Stack

LLM and agents: LangGraph, RAG (hybrid search and reranking), Langfuse, RAGAS, DeepEval, Pydantic, Claude and OpenAI APIs

ML: PyTorch, scikit-learn, Hugging Face, MediaPipe

Backend and MLOps: Python, SQL (PostgreSQL, pgvector), FastAPI, Docker, GitHub Actions, MLflow, DVC, pytest

Find me

Portfolio · LinkedIn · Hugging Face

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  1. market_research_AI_agent market_research_AI_agent Public

    Agentic RAG over SEC filings, prices and trained forecasting models: LangGraph, pgvector hybrid retrieval, Langfuse, RAGAS/DeepEval, FastAPI + Gradio

    Python 1

  2. Consulting-Workplan-Agent Consulting-Workplan-Agent Public

    Multi-agent system that turns a client brief into a WBS, RAID log, RACI matrix and status report with human-in-the-loop revisions

    Python 1

  3. ASL-Fingerspelling-Recognition ASL-Fingerspelling-Recognition Public

    Real-time ASL fingerspelling to text with MediaPipe and a Conformer-Transformer; live Hugging Face demo

    Jupyter Notebook 1

  4. hospital-news-agent-evaluation hospital-news-agent-evaluation Public

    Evaluating Microsoft 365 Copilot's Hospital News Agent vs Perplexity, Claude, ChatGPT and Gemini on Ontario hospital leadership, PHIPA and supervisor monitoring tasks

    Python

  5. Probabilistic-Fraud-Detection-with-Gaussian-Mixtures Probabilistic-Fraud-Detection-with-Gaussian-Mixtures Public

    Unsupervised credit card fraud detection with Gaussian Mixture Models under extreme class imbalance

    Jupyter Notebook 1

  6. Two-Stage_Recommendation_System-Retrieval_and_LambdaRank_Ranking Two-Stage_Recommendation_System-Retrieval_and_LambdaRank_Ranking Public

    Two-stage movie recommender (two-tower retrieval then LambdaRank re-ranking) on MovieLens 100K

    Jupyter Notebook 1