Add dataset card and processed train/test files

.gitattributes

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 # Video files - compressed
 *.mp4 filter=lfs diff=lfs merge=lfs -text
 *.webm filter=lfs diff=lfs merge=lfs -text
+*.csv filter=lfs diff=lfs merge=lfs -text

README.md

@@ -1,3 +1,50 @@
 ---
 license: mit
+task_categories:
+  - tabular-classification
+language:
+  - en
+tags:
+  - mortgage
+  - loan-performance
+  - fannie-mae
+  - finance
+  - data-mining
+size_categories:
+  - 10M<n<100M
 ---
+
+# Fannie Mae Single-Family Loan Performance Dataset
+
+This dataset contains Fannie Mae Single-Family Loan Performance data across multiple quarters, used for mortgage default prediction and loan performance analysis.
+
+## Dataset Structure
+
+### Raw Data (`raw/`)
+| File | Period | Size |
+|------|--------|------|
+| `2000Q1.csv` | Q1 2000 | ~2.3 GB |
+| `2005Q1.csv` | Q1 2005 | ~6.5 GB |
+| `2008Q1.csv` | Q1 2008 | ~5.9 GB |
+| `2013Q1.csv` | Q1 2013 | ~17.2 GB |
+| `2017Q1.csv` | Q1 2017 | ~8.4 GB |
+| `2020Q1.csv` | Q1 2020 | ~8.2 GB |
+
+### Processed Data (`processed/`)
+| File | Description | Size |
+|------|-------------|------|
+| `train_ready.csv` | Training set (preprocessed & feature-engineered) | ~80 MB |
+| `test_ready.csv` | Test set (preprocessed & feature-engineered) | ~75 MB |
+
+## Source
+Data sourced from [Fannie Mae Single-Family Loan Performance Data](https://capitalmarkets.fanniemae.com/credit-risk-transfer/single-family-credit-risk-transfer/fannie-mae-single-family-loan-performance-data).
+
+## Usage
+
+```python
+import pandas as pd
+
+# Load processed data directly from Hugging Face
+train = pd.read_csv("https://huggingface.co/datasets/Shlok112003/Fannie_Mae_Single-Family_Loan_Performance/resolve/main/processed/train_ready.csv")
+test = pd.read_csv("https://huggingface.co/datasets/Shlok112003/Fannie_Mae_Single-Family_Loan_Performance/resolve/main/processed/test_ready.csv")
+```

processed/test_ready.csv

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+size 74828430

processed/train_ready.csv

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+size 80040772