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Installation

Installation Guide for Neo4j on Windows 11

Step 1: Install Java

1. Download and install JRE from Open Logic official website.
   JDK and JRE have differences. JDK (Java Development Kit) includes the Java Runtime Environment (JRE) and Java development tools. On the other hand, JRE (Java Runtime Environment) is the environment required to run Java programs. If you only want to run Java programs, you only need to install the JRE. However, if you wish to develop Java programs, you must install the JDK.

   • Select the version needed for Neo4j. We use JAVA 11. Select to download the msi file.
     
     1. Open the downloaded .msi file.
     2. Install JRE following the instructions and keep notes of your installation path.

2. Set up the Java environment path.

   • Search environment on the start menu.
     
   • Click "Environment Variables".
     
   • Click "Environment Variables" in "System Properties".
     
   • Add new user variables.
     
   • Add JAVA_HOME.
     

Step 2: Install Neo4j

1. Download Neo4j Community Version from the official Neo4j website deployment center.

   • Select the executable for Windows.
     

2. Install Neo4j.

   • Extract the zip file.
   • Move the extracted folder to your desired path and keep notes of the path.

3. Set up the Neo4j environment path.

   • Repeat the steps to access "Environment Variables" from Step 1.
   • Add NEO4j_HOME.
     

4. Start Neo4j program.

   • Start a command prompt window.
     
   • Change the directory to the Neo4j directory, then change the directory to bin.
     
   • Input neo4j console.
   • You can see your Neo4j program running at http://localhost:7474/.

Step 3: Install Github Desktop

1. download the application from the github desktop official site.
   
2. sign in your Github Desktop.
   
3. clone the project.
   

Step 4: Setting up Python Environment

1. download and install anaconda.

   • Go to the Anaconda Distribution page.
   • Choose the appropriate version for your operating system (Windows, macOS, or Linux) and download the installer.
   • Install Anaconda:
     • Windows:
       • Run the downloaded .exe installer.
       • Follow the instructions in the setup wizard. It’s generally recommended to install for "Just Me" and to add Anaconda to your PATH environment variable.

2. create environment.

   • Open Anaconda Prompt (Windows).
   • Create a new environment:

     conda create --name ex_per_per_tea python=3.11

     ex_per_per_tea is our desired environment name and 3.11 with the Python version we need.

3. activate environment.

   • Windows:

     conda activate ex_per_per_tea

4. install requirement.txt.

   • Change directory to the folder where you saved this project. You probably need to set up a proxy if you are using a company network.
   • Install the packages listed in requirements.txt:

   pip install -r requirements.txt

Running the Application

1. Start neo4j
   • Repeat the steps to access "Start Neo4j program" from Installation, Install Neo4j.
2. Run the Python Application:
   • Navigate to the directory containing app.py.
   • Run the application using the following command:

     python app.py

Neo4j Database Structure

Node Types:

• Content: Represents different types of content in the database.
• KnowledgeTreeEle: Nodes in the knowledge tree.
• PeopleNode: Nodes representing people who review content.
• Review: Represents reviews for each content.

Relationships:

• (:KnowledgeTreeEle)-[:HAS_CONTENT]->(:Content): Indicates that a node in the knowledge tree has associated content.
• (:Content)-[:HAS_REVIEW]->(:Review): Content nodes have reviews associated with them.
• (:Review)-[:BELONG_TO]->(:PeopleNode): Reviews belong to specific people.

Key Points

Maintaining Knowledge Tree

• Maintain a tree structure of the knowledge tree.
• Add content to the most leaf tag on the knowledge tree.
• The knowledge tree can only be updated when at least 3 members of the core team reach an agreement.

Content Types:

1. Project
2. Course
3. Book
4. Mentorship
5. Certificate
6. Self-Summary
7. Achievement
8. Event
9. SharingSession

How to Add Nodes

All the code to create nodes is stored in the neo4j_management folder.

Adding a Node to the Knowledge Tree

To add a node to the knowledge tree, follow these steps:

1. Open knowledge_tree_info.json.
2. Add a new node object to the appropriate location in the JSON structure. Ensure that the node's name is unique within its category. For example:

   {
     "name": "fun_node",
     "children": [
       {"name": "philosophy",
        "children": [
          {"name": "stoicism"}
        ]},
       {"name": "popular_science_books"}
     ]
   }

   In this example, the new node "Popular Science Books" is added under the "Fun" category.
3. Once the JSON file is updated with the new node, run the Python script to update the knowledge tree in Neo4j, as described in the Usage section of the README.

Make sure to update your knowledge_tree.json file to reflect any changes or additions to the knowledge tree structure.

Adding a Content Node

To add a content node, follow these steps:

1. Open content_node_info.json.

2. Add a new content node entry in the JSON file, following this structure:

   {
       "relations": ["finetuning", "retrieval_augmented_generation", "python"],
       "properties": {
           "content_uniquev": "logxpert_sbc",
           "name": "LogXpert: efficient log analysis tool for SBC",
           "type": "Project",
           "info": "hahahha</p>"
       }
   }

   This entry includes all the information and relations to all the nodes it may attach to in the knowledge tree. Note that you can use HTML in the info field. Ensure that content_uniquev is unique.

Adding a Review Node

To add a review node, follow these steps:

1. Open review_node_info.json.

2. Add a new review node entry in the JSON file, following this structure:

   {
       "content_uniquev": "experpert1_kubernetes",
       "reviewer": "jora",
       "properties": {
           "review_id": "experpert1_kubernetes_review_jora",
           "stars": 5,
           "comments": "The best and most complete basics of kubernetes training.",
           "status": "In Progress"
       }
   }

   This entry includes all the information and the content node it attaches to. Ensure that review_id is unique.

Running the Program to Add All Nodes

• If you only add nodes without modifying existing ones, run:

  python create_everything.py

• If you also modify existing nodes or relationships, first, in your Neo4j database, run:

  MATCH (n)
  DETACH DELETE n;
  

  And then,

  python create_everything.py

References

• Neo4j Installation Guide (Chinese)