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malozano1-ux/README.md

Hi, I'm Manuela Lozano πŸ‘‹

Data Scientist β€’ Machine Learning Engineer β€’ AI Builder

I'm passionate about using data and AI to solve real-world problems. My work spans machine learning, predictive analytics, business intelligence, NLP, LLM applications, and data engineering.

πŸŽ“ B.S. Statistics & Data Science + B.A. Economics, UCLA
πŸŽ“ Incoming M.S. in Statistics (Advanced Methods & Data Analysis), University of Washington
☁️ Former Business Intelligence Engineer Intern @ Amazon Web Services (AWS)


πŸš€ About Me

I enjoy building end-to-end data productsβ€”from collecting and cleaning data to training machine learning models and deploying AI-powered applications.

My interests include:

  • πŸ€– Machine Learning
  • πŸ“ˆ Predictive Analytics & Forecasting
  • 🧠 Large Language Models (LLMs)
  • πŸ” Retrieval-Augmented Generation (RAG)
  • πŸ“Š Business Intelligence
  • ☁️ Data Engineering
  • πŸ“‰ Applied Statistics

πŸ› οΈ Technical Skills

Languages

Python β€’ SQL β€’ R β€’ Java β€’ Git

Machine Learning

Scikit-learn β€’ CatBoost β€’ XGBoost β€’ Random Forests β€’ Logistic Regression β€’ Neural Networks β€’ Time Series Forecasting β€’ NLP

AI

OpenAI API β€’ Gemini API β€’ LangChain β€’ RAG β€’ FAISS β€’ Prompt Engineering β€’ Agentic AI

Data

Pandas β€’ NumPy β€’ Tableau β€’ QuickSight β€’ Redash β€’ Jupyter Notebook

Cloud

AWS β€’ GitHub β€’ Docker (Learning)


⭐ Featured Projects

πŸ€– Investment AI Agent

LLM-powered financial education assistant built using Retrieval-Augmented Generation (RAG), semantic search, and vector databases.

Tech Stack

  • Python
  • Gemini
  • FAISS
  • FastAPI
  • WhatsApp API

πŸ“ˆ Click Through Rate Prediction

Built machine learning models on millions of advertising interactions to predict click behavior.

Highlights:

  • Feature Engineering
  • CatBoost
  • Logistic Regression
  • CTGAN
  • ROC-AUC improvement from 0.71 β†’ 0.81

🧠 Skin Cancer Prediction

Machine learning model for automated skin lesion classification.

Topics:

  • Computer Vision
  • Medical AI
  • Classification
  • Model Evaluation

πŸ›Έ UFO NLP & Statistical Modeling

Natural Language Processing pipeline analyzing 140,000+ UFO sighting reports.

Topics:

  • NLP
  • Sentiment Analysis
  • Poisson Regression
  • Geographic Data Analysis

🌎 Economic Forecasting

Forecasting macroeconomic indicators using statistical learning and time-series models.

Topics:

  • Forecasting
  • Time Series
  • Regression
  • Economics

πŸ“Š Experience

Amazon Web Services (AWS)

Business Intelligence Engineer Intern

  • Built forecasting pipelines
  • Developed predictive models
  • Automated ETL workflows
  • Built QuickSight dashboards
  • Improved operational planning using machine learning

Insights Investment

Data Scientist

Built AI-powered financial education tools using LLMs, RAG, semantic search, predictive analytics, and statistical modeling.


🌱 Currently Learning

  • Production ML Systems
  • MLOps
  • Docker
  • Kubernetes
  • AWS Deployment
  • LLM Evaluation
  • AI Agents

πŸ“š Current Goals

  • Build production-ready AI applications
  • Publish more open-source projects
  • Contribute to machine learning repositories
  • Learn scalable ML infrastructure

πŸ“« Connect With Me

LinkedIn Portfolio Email


"The best way to learn data science is to build things."

Pinned Loading

  1. ctr-prediction ctr-prediction Public

    CTR prediction using CatBoost and CTGAN synthetic augmentation on 7.7M ad interactions

  2. skin-cancer-prediction skin-cancer-prediction Public

    Binary classification of skin lesions (benign vs. malignant) using LDA and ridge regression on 50K observations

  3. econ187-machine-learning econ187-machine-learning Public

    Machine learning for econometric prediction using R: random forests, XGBoost, and logistic regression applied to classification problems with economic datasets.

  4. investment-rag-chatbot investment-rag-chatbot Public

    RAG-powered WhatsApp chatbot for financial education β€” built with Gemini, FAISS vector search, and FastAPI. Features per-topic retrieval, intent routing, and real-time conversation logging.

    Python

  5. llm-agent-game llm-agent-game Public

    Multi-agent LLM game where autonomous agents compete in real time: each built with a different strategy using OpenRouter, OpenAI, and Gemini APIs.

    Python

  6. stats263-trivia-agent stats263-trivia-agent Public

    Forked from jon-paino/stats263-trivia-agent

    Tournament-ready trivia agent built on Groq Llama 3.3 70B with OpenAI fallback: features structured reasoning, score-aware risk calibration, and Tracer-based LLM auditing.

    Python