signaturization.md

@@ -70,10 +70,21 @@ V_red = my_sign0.V[:,:elbow_idx]
 
 ### Signatures type 2
 
+Signatures type 2 are the result of a two-step process:
+
+1. Loading nearest-neighbor similarities type 1 as a graph.
+2. Perform `node2vec`.
+
+It is not possible to produce embedding for out-of-sample (out-of-vocabulary) nodes, so a multi-output regression needs to be performed, a posteriori, from signatures type 1 to signatures type 2 in order to endow `predict()` capabilities.
+
 ### Signatures type 3
 
+:construction: We haven't figured out how to derive signatures of type 3, yet.
+
 ### Similarity vectors
 
+These are, arguably, the mo
+
 ### Nearest neighbors
 
 ### Predicted nearest neighbors