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I will build a custom ai chatbot trained on your data with rag and llm
Rafael R PhD
Top Rated
About this gig
I'm a PhD data scientist and AI engineer. I build AI chatbots and assistants that actually know YOUR business grounded in your own documents and data, with source citations, not a generic bot that makes things up.
Using retrieval-augmented generation (RAG), I connect a large language model (GPT/Claude) to your content via a vector database, so answers are accurate and verifiable. I add guardrails against hallucination and evaluate answer quality before delivery.
You receive: a working assistant on your website, Slack, or via API; your data ingested into a searchable knowledge base; answers with citations to the source; and clean, documented code you own.
Use cases: customer-support bot, internal knowledge assistant, document Q&A, FAQ automation.
Where most "AI developers" stop at a demo, I bring data-science rigor: retrieval quality, evaluation, and honest limits. Message me with your use case and data you'll get a tailored plan within 24 hours.
Get to know Rafael R PhD
Rafael R PhD
Data is the new oil!
Top Rated
- FromBrazil
- Member sinceNov 2019
- Avg. response time1 hour
- Last delivery1 day
Languages
English
Hi, I’m Rafael—a data scientist, researcher and professor with 10+ years of experience turning complex data into clear insights. I hold a PhD from the University of Leeds and have partnered with researchers, NGOs and businesses to solve real-world challenges using R, SPSS and Python, from statistical modelling and machine learning to experimental design. As author of 16 peer-reviewed papers, I guarantee methodological rigor, reproducibility and actionable results. Let’s connect and drive your project forward!
My Portfolio
FAQ
Which AI model do you use?
OpenAI's GPT or Anthropic's Claude — I pick the best fit for your accuracy, privacy and budget, and explain the trade-offs.
Will it make things up (hallucinate)?
No bot is perfect, but RAG grounds answers in your own data, adds source citations, and I apply guardrails plus an accuracy check before handover to minimize it.
What data can it use?
Documents (PDF, Word, web pages), knowledge bases, FAQs or databases — I handle the ingestion, cleaning and chunking for you.
Where can the chatbot live?
A website widget, Slack, WhatsApp, or via an API you plug into your own product — your choice.
Do I own the code and data?
Yes — you receive clean, documented code and full ownership, and your data stays yours.
Can you update or retrain it later?
Yes — the knowledge base is designed to be refreshed as your documents change; I can set that up or hand it over documented.
