{"slug": "decision-tree-and-k-means-analysis-of-raman-spectra-for-edible-oils-a-physics-ai", "title": "Decision Tree and K-Means Analysis of Raman Spectra for Edible Oils: A Physics-Informed AI Approach", "summary": "A new study from arXiv (2608.20440v1) reports that Decision Trees achieved 100% classification accuracy for pure edible oils using only four Raman spectral variables from an original 1866-feature space, representing 0.21% of the data. The integrated Raman spectroscopy and machine-learning framework, which also used t-SNE, K-means clustering, and NNLS-based spectral decomposition, achieved 86.4% and 85.4% accuracy for matrix-containing samples after spectral decomposition, reducing important variables to five and four. The findings support compact, interpretable spectral representations for Frugal AI, Edge AI, and portable food-quality monitoring.", "body_md": "arXiv:2608.20440v1 Announce Type: new\nAbstract: Authentication of edible oils in processed foods is important for food quality, fraud prevention, and regulatory compliance. This study establishes an integrated Raman spectroscopy and machine-learning framework that links intrinsic spectral organization, interpretable classification, and Physics-Informed Artificial Intelligence (PI-AI). Five edible oils were investigated in pure form and within a fried-potato-chip matrix using t-SNE, K-means clustering, Decision Trees, and Non-Negative Least Squares (NNLS)-based spectral decomposition. Unsupervised analyses revealed substantially stronger class organization and separability in pure oils, whereas food-matrix effects introduced pronounced spectral overlap. Decision Trees achieved 100% classification accuracy for pure oils using only four Raman variables from the original 1866-feature spectral space. These four variables, consistently identified by both pre-pruned and post-pruned models, represented only approximately 0.21% of the available spectral information while retaining perfect test-set performance. For matrix-containing samples, NNLS-based PI-AI spectral decomposition substantially improved classification by separating oil-related signatures from paper and potato contributions. Optimized post-pruned models achieved accuracies of 86.4% and 85.4% for paper-subtracted and paper-plus-potato-subtracted datasets, respectively, while reducing the number of important Raman variables to only five and four. The compact four-feature representation further reduced the data footprint by 99.44% without loss of classification accuracy. Collectively, these findings demonstrate that accurate Raman-based oil identification can be achieved through physically meaningful, highly compact, and interpretable spectral representations, providing a promising foundation for Frugal AI, Edge AI, portable sensing, and embedded food-quality monitoring.", "url": "https://wpnews.pro/news/decision-tree-and-k-means-analysis-of-raman-spectra-for-edible-oils-a-physics-ai", "canonical_source": "https://arxiv.org/abs/2608.20440", "published_at": "2026-08-24 04:00:00+00:00", "updated_at": "2026-08-24 04:15:12.995681+00:00", "lang": "en", "topics": ["machine-learning", "artificial-intelligence"], "entities": ["arXiv"], "alternates": {"html": "https://wpnews.pro/news/decision-tree-and-k-means-analysis-of-raman-spectra-for-edible-oils-a-physics-ai", "markdown": "https://wpnews.pro/news/decision-tree-and-k-means-analysis-of-raman-spectra-for-edible-oils-a-physics-ai.md", "text": "https://wpnews.pro/news/decision-tree-and-k-means-analysis-of-raman-spectra-for-edible-oils-a-physics-ai.txt", "jsonld": "https://wpnews.pro/news/decision-tree-and-k-means-analysis-of-raman-spectra-for-edible-oils-a-physics-ai.jsonld"}}