Update README.md

README.md

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----
-license: mit
----
+---
+pretty_name: PhyOptoFlow Reduced Optical Thin-Film Dataset
+license: cc-by-4.0
+task_categories:
+- other
+task_ids:
+- regression
+tags:
+- photonics
+- optics
+- materials-science
+- inverse-design
+- thin-films
+- multilayer
+- spectrum
+- parquet
+size_categories:
+- 10M<n<100M
+configs:
+- config_name: default
+  data_files:
+  - split: train
+    path: train/*.parquet
+  - split: validation
+    path: val/*.parquet
+  - split: test
+    path: test/*.parquet
+---
+
+This dataset is a reduced Hugging Face friendly parquet export of the PhyOptoFlow optical multilayer thin-film dataset. It contains 10,000,000 training samples, 500,000 validation samples, and 500,000 test samples. Each sample stores compact uint16 spectral targets together with padded structural labels and fabrication-related constraints for inverse design and spectrum-conditioned modeling tasks.