Add Thresholding Arrow files, keep CSVs and conversion script

.gitignore

@@ -0,0 +1 @@
+.DS_Store

README.md

@@ -14,11 +14,11 @@ configs:
 - config_name: Thresholding
   data_files:
   - split: train
-    path: "thresholding/train.csv"
+    path: "thresholding/train/data-00000-of-00001.arrow"
   - split: validation
-    path: "thresholding/validation.csv"
+    path: "thresholding/validation/data-00000-of-00001.arrow"
   - split: test
-    path: "thresholding/test.csv"
+    path: "thresholding/test/data-00000-of-00001.arrow"
 ---
 
 AV task used in "Tokenization is Sensitive to Language Variation" paper, Arxiv [link](https://arxiv.org/abs/2502.15343).

convert_csv_to_arrow.py

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+"""
+Convert the Thresholding CSV files to Arrow format,
+downloading the real files from HuggingFace (bypassing LFS pointers).
+"""
+from huggingface_hub import hf_hub_download
+import pyarrow as pa
+import pyarrow.csv as pcsv
+from pathlib import Path
+
+REPO = "AnnaWegmann/AV"
+SPLITS = {
+    "train": "thresholding/train.csv",
+    "validation": "thresholding/validation.csv",
+    "test": "thresholding/test.csv",
+}
+
+for split, csv_repo_path in SPLITS.items():
+    print(f"\n--- {split} ---")
+
+    # Download real CSV from HuggingFace
+    local_csv = hf_hub_download(REPO, csv_repo_path, repo_type="dataset")
+    print(f"  Downloaded: {local_csv}")
+
+    # Read CSV into Arrow table (texts contain newlines)
+    parse_opts = pcsv.ParseOptions(newlines_in_values=True)
+    table = pcsv.read_csv(local_csv, parse_options=parse_opts)
+    print(f"  Rows: {table.num_rows}, Cols: {table.column_names}")
+
+    # Write as Arrow IPC streaming format (same as the working Contrastive_Learning files)
+    out_dir = Path("thresholding") / split
+    out_dir.mkdir(parents=True, exist_ok=True)
+    out_path = out_dir / "data-00000-of-00001.arrow"
+
+    with open(out_path, "wb") as f:
+        writer = pa.ipc.new_stream(f, table.schema)
+        writer.write_table(table)
+        writer.close()
+
+    print(f"  Wrote: {out_path} ({out_path.stat().st_size:,} bytes)")
+
+print("\nDone! Now delete the old CSV files, update README.md, and push.")

thresholding/test/data-00000-of-00001.arrow

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+version https://git-lfs.github.com/spec/v1
+oid sha256:3d14169d7016741481deb4b706f98786a5641312f39652260c15b01c339bcaa9
+size 24113072

thresholding/train/data-00000-of-00001.arrow

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:22247c9616b84895b005d3b956aaa5a73866f6562b86adb39e9346504f8a677b
+size 45387352

thresholding/validation/data-00000-of-00001.arrow

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:58930c2eff92bd3373d502bc0f567cb3cdc75d616404de9bad79289b7fce4454
+size 12386760