Open access; link preprint

README.md

@@ -101,7 +101,7 @@ drawing recovers.
 
 Code, protocol and reproduction instructions: [github.com/VietAlpha/histgrambench](https://github.com/VietAlpha/histgrambench).
 
-**Access.** Access is granted on request until the accompanying paper is published; the dataset will then be open.
+**Paper.** [HistGramBench preprint (PDF)](https://www.vietalpha.org/research/histgrambench/histgrambench-preprint.pdf). Overview: [vietalpha.org/research/histgrambench](https://www.vietalpha.org/research/histgrambench).
 
 ## At a glance
 
@@ -126,8 +126,6 @@ row["image"]                      # the figure given to the model
 facts = keys.filter(lambda f: f["item_id"] == row["item_id"] and f["in_key"])
 ```
 
-Log in with `hf auth login` once your access request is approved.
-
 ## Contents
 
 | Config | Content |
@@ -151,10 +149,11 @@ and repository as listed in `works`.
 ## Citation
 
 ```bibtex
-@unpublished{tran2026histgrambench,
+@misc{tran2026histgrambench,
   title  = {{HistGramBench}: Measuring Structural Recovery When Multimodal Models Redraw Historical Mathematical Diagrams as {TikZ}},
   author = {Tran, Minh Quang and He, Carter and Bloch, Cameron and Huang, Zitai and Vo, Thien Truong and Tran, Trong Nguyen and Chen, Isaac},
   year   = {2026},
-  note   = {Manuscript}
+  note   = {Preprint},
+  url    = {https://www.vietalpha.org/research/histgrambench/histgrambench-preprint.pdf}
 }
 ```