feat(neo4j): add installation instructions for neo4j

Author: rfprod

requirements.txt

@@ -1,5 +1,6 @@
 black
 python-dotenv
+tiktoken
 langchain
 langchain_community
 langchain-ollama

src/init.py

@@ -25,7 +25,7 @@
 vector_store = Neo4jVector.from_documents(
     documents=doc_splits,
     embedding=OllamaEmbeddings(
-        base_url="http://localhost:11434", model="llama3.2:latest"
+        base_url="http://localhost:11434", model="gemma2:latest"
     ),
     url=os.getenv("NEO4J_URL"),
     username=os.getenv("NEO4J_USER"),
@@ -46,7 +46,7 @@
 )
 
 llm = ChatOllama(
-    base_url="http://localhost:11434", model="llama3.2:latest", temperature=0
+    base_url="http://localhost:11434", model="gemma2:latest", temperature=0
 )
 
 rag_chain = prompt | llm | StrOutputParser()

tools/neo4j/install.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+# https://debian.neo4j.com/
+sudo apt update
+wget -O - https://debian.neo4j.com/neotechnology.gpg.key | sudo apt-key add -
+echo 'deb https://debian.neo4j.com stable latest' | sudo tee /etc/apt/sources.list.d/neo4j.list
+sudo apt update
+
+sudo apt install neo4j -y
+sudo systemctl enable neo4j.service
+sudo systemctl start neo4j.service
+sudo systemctl status neo4j.service
+
+neo4j --version