Update README.md

README.md

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 <!-- Provide a quick summary of what the model is/does. -->
 
+This is the tokenizer that is used for converting strings to IDs in the FST descriptions for the paper [SIP: Injecting a Structural Inductive Bias into a Seq2Seq Model by Simulation](https://arxiv.org/abs/2310.00796).
+
+It is **not** used for encoding the input/output strings of the FSTs, only for the FSt description.
 
 
 ## Model Details
@@ -29,9 +32,8 @@ This is the model card of a 🤗 transformers model that has been pushed on the
 
 <!-- Provide the basic links for the model. -->
 
-- **Repository:** [More Information Needed]
-- **Paper [optional]:** [More Information Needed]
-- **Demo [optional]:** [More Information Needed]
+- **Repository:** https://github.com/namednil/sip
+- **Paper [optional]:** [SIP: Injecting a Structural Inductive Bias into a Seq2Seq Model by Simulation](https://arxiv.org/abs/2310.00796)
 
 ## Uses