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MathRC/README.md

Knowledge Engineer and AI Engineer with a Master's in Computational Linguistics and 11 years in IT localization. Builds RAG systems, knowledge graphs, and LLM-powered applications using Neo4j, Python, and cloud AI services. Neo4j Certified Professional.

TECHNICAL SKILLS

Graph & Semantic Technologies: Neo4j, Cypher, Knowledge Graphs, Ontology Design, Graph Algorithms (centrality, community detection, similarity), Graph Data Modeling
Semantic Web: RDF, OWL, SPARQL
AI & Retrieval: LLMs, Prompt Engineering, RAG, Hybrid Search (BM25 + vector), Embeddings (sentence-transformers), Retrieval Evaluation
NLP: spaCy, NLTK, Hugging Face Transformers, Sentiment Analysis, Entity Extraction, Corpus Annotation
Deployment: Docker, Streamlit, AWS, Amazon Bedrock
Programming: Python (pandas, NumPy, scikit-learn, NetworkX, matplotlib), SQL, Regex
Languages: Portuguese (native), English (fluent), Spanish (advanced), German (beginner)

🌐 Passionate about languages and technology.
🔗 Portfolio: github.com/MathRC
📩 Open to roles in knowledge engineering, ontology design, NLP, and AI engineering.

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  1. graph-rag graph-rag Public

    Graph RAG vs Naive RAG using 50 MIT OpenCourseWare courses. Neo4j knowledge graph, hybrid search (BM25 + vector), Cypher template routing, and ground truth evaluation. Includes centrality, Jaccard …

    Jupyter Notebook

  2. knowledge-assistant knowledge-assistant Public

    A RAG-powered knowledge assistant that answers style guide questions for translators. Built with Weaviate, Amazon Bedrock (Claude 3 Sonnet), and Streamlit.

    Jupyter Notebook

  3. sentiment-analysis-duolingo sentiment-analysis-duolingo Public

    This repository contains a sentiment analysis project investigating public reaction on Reddit to Duolingo's "AI-first" announcement and subsequent clarifications, using NLP to reveal emotional tren…

    Jupyter Notebook

  4. mpea mpea Public

    Predictive modeling of high-strength MPEAs: Analyzing how composition, processing, and microstructure affect compressive yield strength

    Jupyter Notebook 1

  5. canada-service-prices canada-service-prices Public

    This project explores the Architectural, Engineering and Related Services Price Index (AESPI), a dataset published by Statistics Canada that tracks pricing in key professional service sectors acros…

    Jupyter Notebook