| NIRS | Near-Infrared Spectrometer |
| PScanner | Plastic Scanner |
| SP | SpectraPod |
| LED | Light-Emitting Diode |
| SVM | Support Vector Machine |
| XGBoost | eXtreme Gradient Boosting |
| PET | Polyethylene Terephthalate |
| HDPE | High-Density Polyethylene |
| PVC | Polyvinyl Chloride |
| LDPE | Low-Density Polyethylene |
| PP | Polypropylene |
| PS | Polystyrene |
| InGaAs | Indium Gallium Arsenide |
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