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README.md

@@ -12,14 +12,14 @@ task_categories:
 
 # Solid-State Battery (SSB) Screening – SSL Corpus
 
-This dataset contains inorganic crystal structures sourced from the Materials Project
-for self-supervised and weakly supervised representation learning in solid-state
-battery electrolyte screening.
+This dataset contains crystal structures sourced from the Materials Project and
+optional external structure corpora for self-supervised and weakly supervised
+representation learning in solid-state battery electrolyte screening.
 
 ## Format
 - Parquet (Arrow) with ZSTD compression
 - One row per structure
-- Fields: `mp_id`, `elements`, `atomic_numbers`, `fractional_coords`, `lattice`, `spacegroup_number`, `reduced_formula`, `tier`, and optional metadata
+- Fields: `mp_id`, `source`, `elements`, `atomic_numbers`, `fractional_coords`, `lattice`, `spacegroup_number`, `reduced_formula`, `tier`, and optional metadata
 
 ## Tiers
 - `electrolyte_relevant`