Common Neighbors Calculator

Let N(A) be the neighbor set of Node A, and N(B) for Node B.

• Common neighbors set: N(A) ∩ N(B)
• Common neighbors score: |N(A) ∩ N(B)|
• Union set: N(A) ∪ N(B)
• Jaccard similarity: |N(A) ∩ N(B)| / |N(A) ∪ N(B)|
• Overlap coefficient: |N(A) ∩ N(B)| / min(|N(A)|, |N(B)|)
• Cosine similarity: |N(A) ∩ N(B)| / sqrt(|N(A)| |N(B)|)

1. Enter Node A neighbors as IDs or labels.
2. Enter Node B neighbors using the same labeling.
3. Select how values are separated, or keep Auto.
4. Choose case handling, then press Calculate.
5. Review counts, the intersection list, and similarity metrics.
6. Use the export buttons to save CSV or PDF results.