Network Diagrams Notes
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Network Diagrams Notes
📚 Key Definitions and Concepts
Network Diagrams
A network diagram (or graph) consists of:
- Nodes (vertices): Points representing objects or entities
- Edges: Lines connecting nodes, showing relationships
Connected vs Non-Connected Networks
A connected graph is one where there is a __________ between every pair of vertices. This means you can reach any vertex from any other vertex by following the edges.
A non-connected graph (disconnected) has at least one pair of vertices with __________ connecting them, creating separate __________ or components.
Key Terms
✏️ Drawing Network Diagrams
Steps to Create a Network Diagram:
- Identify nodes: List all entities/objects
- Draw nodes: Use circles or dots, label clearly
- Add edges: Draw lines between connected nodes
- Label edges: Add weights/values if needed
Four friends: Alex, Ben, Claire, and Dana. Alex knows Ben and Claire. Ben knows Alex and Dana. Claire knows Alex and Dana. Dana knows Ben and Claire.
📊 Adjacency Matrices
Converting Network Diagrams to Tables
An adjacency matrix is a table showing connections between nodes:
- Rows and columns represent nodes
- Enter '1' if nodes are connected, '0' if not
- For weighted networks, enter the weight value instead of '1'
| A | B | C | |
| A | 0 | ___ | ___ |
| B | ___ | 0 | ___ |
| C | ___ | ___ | 0 |
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