Rename scripts to shorter, more suitable names

- dataset_statistics.py → stats.py
- preprocess_data.py → preprocess.py
- validate_dataset.py → validate.py
- Updated README.md import example
- Updated validate.py to check for new filenames

README.md

@@ -164,7 +164,7 @@ dataset_aspect = load_dataset("undertheseanlp/UTS2017_Bank", "aspect_sentiment")
 A preprocessing script is available in the repository:
 
 ```python
-from preprocess_data import process_banking_data
+from preprocess import process_banking_data
 
 # Process raw data into three subsets
 process_banking_data("raw_data/train.txt", "data")

validate_dataset.py → validate.py

@@ -24,8 +24,8 @@ def validate_file_structure():
         "raw_data/train.txt",
         "raw_data/test.txt",
         "README.md",
-        "preprocess_data.py",
-        "dataset_statistics.py"
+        "preprocess.py",
+        "stats.py"
     ]
 
     missing_files = []