added diagram

app.py

@@ -141,6 +141,14 @@ Example:
    You can rotate the 3D view to explore groupings.
 
 ---
+## 📊 From High-Dimensional Space to 3D View
+
+Below is a simplified illustration of what happens:  
+On the left: data points in a high-dimensional space (shown here as 5D for simplicity).  
+On the right: the same points projected into a 3D space using PCA.
+
+![High-dimensional to 3D projection](embedding_projection_diagram.png)
+
 
 ## 💡 Typical Applications of Embeddings
 - **Semantic search** – Find relevant results even if exact keywords don’t match