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JonathanCristovao/README.md

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๐ŸŒŸ About Me

๐ŸŽ“ AI Researcher focused on HAR, Agriculture 4.0, and Generative Models
๐Ÿ’ก Passionate about LLMs, Diffusion Models, and Edge AI
๐Ÿ”ฌ Published at ICML 2024 and International Journals
๐Ÿš€ Building impactful solutions with cutting-edge technologies
๐ŸŒฑ Constantly learning and pushing the boundaries of AI

LinkedIn Google Scholar Profile Views


๐Ÿ“„ Scientific Publications

๐Ÿ† Featured Publications

๐Ÿ“ ICML 2024 - Miami, USA

An Approach for Data Augmentation in HAR with Wearable Sensors Using TIMEGAN

Focuses on generating realistic synthetic data from wearable sensors using TimeGAN for Human Activity Recognition.

๐Ÿ”— View Publication

๐Ÿ“ International Journal

Using Mobile Edge AI to Detect and Map Diseases in Citrus Orchards

A systematic study of Deep Learning architectures applied to disease detection and fruit counting in orchards.

๐Ÿ”— View Publication


๐Ÿง  Technical Expertise

๐Ÿงฉ LLMs & NLP
Prompt Engineering: OpenAI, Hugging Face, Ollama, Anthropic
Fine-tuning: LoRA, QLoRA, PEFT
Advanced Techniques: RAG (Retrieval-Augmented Generation)
Vector Databases: FAISS, Chroma, Weaviate, Pinecone
Model Serving: FastAPI, LangChain, Docker, MLflow

Models Used:

LLaMA Gemma GPT Mistral Phi DeepSeek Mixtral Qwen

๐ŸŽจ Diffusion Models & Generative AI
  • โœจ Stable Diffusion: text-to-image, inpainting, img2img, ControlNet, LoRA
  • ๐ŸŽ›๏ธ ComfyUI: Custom pipeline design, workflow automation, model chaining
  • ๐Ÿค— Hugging Face Diffusers: Deployment and experimentation
  • ๐ŸŽฏ DreamBooth & LoRA: Fine-tuning for personalized generation
  • ๐ŸŽจ Leonardo.AI & DALLยทE 3: API-based content generation
  • ๐Ÿ“ Prompt Engineering: Marketing, branding, and storytelling
  • ๐Ÿ”ง Post-processing: Upscalers, attention masking, aesthetic scoring
  • ๐Ÿ’พ Model Management: .safetensors, .ckpt, .onnx optimization
๐Ÿค– Machine Learning & Deep Learning

Machine Learning:

  • Supervised & Unsupervised Learning
  • Regression, Classification, Clustering
  • Time Series Forecasting & Anomaly Detection
  • Recommender Systems
  • Model Evaluation & Feature Engineering

Deep Learning:

  • Artificial Neural Networks (ANN)
  • Convolutional Neural Networks (CNN)
  • Recurrent Neural Networks (RNN/LSTM)
  • Computer Vision (TensorFlow, PyTorch, OpenCV)
  • Transfer Learning & Model Fine-tuning
๐Ÿ“Š Data Analytics & Visualization

Google Analytics Tableau Power BI Excel

Python Data Stack:

NumPy Pandas SciPy Matplotlib Seaborn Plotly Scikit Learn Polars Dask

Capabilities:

  • ๐Ÿ” Data Wrangling & Cleaning
  • ๐Ÿ“ˆ Exploratory Data Analysis (EDA)
  • ๐Ÿ“Š Statistical Analysis & Hypothesis Testing
  • ๐ŸŽจ Visual Dashboards & Storytelling
  • โšก Reporting Automation (Power BI, Streamlit, Tableau)
๐Ÿš€ MLOps & Model Deployment

MLflow FastAPI Docker Kubernetes GitHub Actions Prometheus Grafana Apache Airflow

Key Practices:

  • ๐Ÿ“ฆ Model versioning & registry (MLflow, DVC)
  • ๐Ÿ“Š Experiment tracking & parameter logging
  • ๐ŸŒ REST API deployment (FastAPI + Docker)
  • ๐Ÿ“ˆ Monitoring & Logging (Prometheus, Grafana, Kibana)
  • โš™๏ธ CI/CD pipelines (GitHub Actions, CircleCI)
  • ๐Ÿณ Container orchestration (Kubernetes, Docker Compose)
  • ๐Ÿ”„ Workflow automation (Apache Airflow)
  • ๐Ÿ”’ Secure API scaling with NGINX
  • ๐Ÿ—๏ธ Microservices architecture for modular AI services
โš™๏ธ Embedded Systems & Edge AI

Hardware Platforms:

NVIDIA ESP32 Arduino Raspberry Pi

  • ๐Ÿš€ NVIDIA Jetson Nano โ€“ AI edge computing with GPU acceleration
  • ๐Ÿ“ก ESP32 / ESP32-C3 โ€“ Low-power microcontrollers with Wi-Fi + BLE
  • ๐Ÿ”Œ Arduino โ€“ Prototyping with C/C++ and sensor integration
  • ๐Ÿ“ Raspberry Pi โ€“ Full-stack embedded Linux systems
  • ๐Ÿง  Sipeed M1s Dock โ€“ RISC-V with AI co-processor (Kendryte K210)

Applications:

  • Real-time sensor data collection
  • Edge AI for activity recognition (HAR)
  • IoT integration with mobile apps (Flutter + BLE)
  • Offline AI inference with optimized models

๐Ÿ› ๏ธ Tech Stack

Programming Languages

Python C C++ TypeScript Dart

Frameworks & Tools

TensorFlow PyTorch FastAPI Flask OpenCV Streamlit

DevOps & Infrastructure

Docker Kubernetes Git GitHub Actions Apache Spark

Databases

MySQL PostgreSQL MongoDB DBeaver

Development Tools

VS Code Postman Jupyter Linux


๐Ÿ† GitHub Trophies

trophy


๐Ÿ“ˆ Contribution Graph

Jonathan's github activity graph


๐Ÿ“ซ Let's Connect!

I'm always open to interesting conversations and collaboration opportunities!

LinkedIn Google Scholar Email


๐Ÿ’ก Fun Fact

"The best way to predict the future is to create it" - Abraham Lincoln

Snake animation


Footer

โญ๏ธ From Jonathan Cristovรฃo with ๐Ÿ’œ

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