Python code for rule-based NLP extraction of keywords from circular economy definitions

DATASET MIGRATED FROM FIGSHARE: <p dir="ltr">This repository provides Python code and a dataset for a rule-based NLP analysis of 500 peer-reviewed circular economy definitions. The Python script enables automated keyword extraction to identify 10R strategies (R0-R9) and beyond, offering structured insights into CE definitions. ChatGPT 4o is used for optimization and debugging. </p><p dir="ltr">Key Features</p><p dir="ltr">✅ Python-based rule-based NLP model for keyword extraction.</p><p dir="ltr">✅ Google Colab-ready script for real-time text analysis.</p><p dir="ltr">✅ Dataset of 500 analyzed CE definitions with extracted R-strategy and sustainability-related keywords.</p><p dir="ltr">✅ Manual & user guide to ensure easy reproducibility.</p>