Fix NLTK punkt setup and remove redundant downloads

analyze_aspects.py

@@ -13,10 +13,7 @@ from transformers import pipeline
 from collections import defaultdict
 import matplotlib.pyplot as plt
 import os
-
-nltk.download('punkt', download_dir='/home/user/nltk_data')
-nltk.data.path.append('/home/user/nltk_data')
-os.environ['NLTK_DATA'] = '/home/user/nltk_data'
+nltk.download('punkt')
 
 def visualize_aspects(aspect_results: dict[str, list[float]], output_dir: Path, filename: str = "sentiment_aspekte.png"):
     output_dir.mkdir(parents=True, exist_ok=True)
@@ -47,7 +44,7 @@ def visualize_aspects(aspect_results: dict[str, list[float]], output_dir: Path,
 
 # NLTK punkt model for sentence tokenization
 nltk.download('punkt', download_dir='/home/user/nltk_data')
-from nltk import sent_tokenize
+from nltk.tokenize import sent_tokenize
 
 # Logging Configuration
 def configure_logging():