Module 1: Introduction

In this module, we will learn what LLM and RAG are and implement a simple RAG pipeline to answer questions about the FAQ Documents from our Zoomcamp courses

What we will do:

• Index Zoomcamp FAQ documents
  • DE Zoomcamp: https://docs.google.com/document/d/19bnYs80DwuUimHM65UV3sylsCn2j1vziPOwzBwQrebw/edit
  • ML Zoomcamp: https://docs.google.com/document/d/1LpPanc33QJJ6BSsyxVg-pWNMplal84TdZtq10naIhD8/edit
  • MLOps Zoomcamp: https://docs.google.com/document/d/12TlBfhIiKtyBv8RnsoJR6F72bkPDGEvPOItJIxaEzE0/edit
• Create a Q&A system for answering questions about these documents

1.1 Introduction to LLM and RAG

• LLM
• RAG
• RAG architecture
• Course outcome

1.2 Preparing the Environment

• Installing libraries
• Alternative: installing anaconda or miniconda

pip install tqdm notebook==7.1.2 openai elasticsearch pandas scikit-learn ipywidgets

1.3 Retrieval

• We will use the search engine we build in the build-your-own-search-engine workshop: minsearch
• Indexing the documents
• Peforming the search

1.4 Generation with OpenAI

• Invoking OpenAI API
• Building the prompt
• Getting the answer

If you don't want to use a service, you can run an LLM locally refer to module 2 for more details.

In particular, check "2.7 Ollama - Running LLMs on a CPU" - it can work with OpenAI API, so to make the example from 1.4 work locally, you only need to change a few lines of code.

1.5 Cleaned RAG flow

• Cleaning the code we wrote so far
• Making it modular

1.6 Searching with ElasticSearch

• Run ElasticSearch with Docker
• Index the documents
• Replace MinSearch with ElasticSearch

Running ElasticSearch:

docker run -it \
    --rm \
    --name elasticsearch \
    -p 9200:9200 \
    -p 9300:9300 \
    -e "discovery.type=single-node" \
    -e "xpack.security.enabled=false" \
    docker.elastic.co/elasticsearch/elasticsearch:8.4.3

If the previous command doesn't work (i.e. you see "error pulling image configuration"), try to run ElasticSearch directly from Docker Hub:

docker run -it \
    --rm \
    --name elasticsearch \
    -p 9200:9200 \
    -p 9300:9300 \
    -e "discovery.type=single-node" \
    -e "xpack.security.enabled=false" \
    elasticsearch:8.4.3

Index settings:

{
    "settings": {
        "number_of_shards": 1,
        "number_of_replicas": 0
    },
    "mappings": {
        "properties": {
            "text": {"type": "text"},
            "section": {"type": "text"},
            "question": {"type": "text"},
            "course": {"type": "keyword"} 
        }
    }
}

Query:

{
    "size": 5,
    "query": {
        "bool": {
            "must": {
                "multi_match": {
                    "query": query,
                    "fields": ["question^3", "text", "section"],
                    "type": "best_fields"
                }
            },
            "filter": {
                "term": {
                    "course": "data-engineering-zoomcamp"
                }
            }
        }
    }
}

We use "type": "best_fields". You can read more about different types of multi_match search in elastic-search.md.

1.7 Homework

More information here.

Notes

• Notes by slavaheroes
• Notes by Pham Nguyen Hung
• Notes by dimzachar
• Notes by Olawale Ogundeji
• Notes by Uchechukwu
• Notes by Kamal
• Notes by Marat
• Did you take notes? Add them above this line (Send a PR with links to your notes)