Estimation and Classification of Coffee Plant Water Potential Using Spectral Reflectance and Machine Learning Techniques

README — Coffee Plant Spectral and Water Potential Dataset Description This dataset contains spectral and water potential measurements of coffee plants collected in the municipality of Diamantina, northern Minas Gerais, Brazil, during 2014, 2015, and 2016, capturing seasonal climatic variations. Two coffee management systems were studied:- **Irrigated:** Plants under artificial irrigation.- **Rainfed (Sequeiro):** Plants relying exclusively on natural precipitation. The data are organized for **classification** and **regression** tasks. --- Data Collection - **Institution:** EPAMIG (*Empresa de Pesquisa Agropecuária de Minas Gerais*).- **Spectral Data:** Collected with **CI-710 Mini Leaf Spectrometer** (400–950 nm).- **Water Potential:** Measured using a **Scholander Pressure Chamber**. --- Dataset Composition - **Irrigated Management:** - Samples: 437- **Rainfed Management:** - Samples: 445 Each sample includes:- Collection Date- Genotype/Cultivar Number- Repetition Number- Spectral Reflectance (400–950 nm)- Water Potential (Ψ_W) --- File Structure /Data ├── Irrigated │ ├── irrigated_classification.xlsx │ ├── irrigated_regression.xlsx ├── Rainfed │ ├── rainfed_classification.xlsx │ ├── rainfed_regression.xlsx Notes:- Classification files: contain labels or classes for predictive classification tasks.- Regression files: contain continuous water potential values for regression modeling.- metadata.csv: describes variables and units. --- Variable Description | Variable | Description ||------------------------|-------------------------------------------------------------|| Date | Date of sample collection (YYYY-MM-DD) || Genotype/Cultivar | Identifier for coffee genotype or cultivar || Repetition | Repetition number for the genotype/cultivar || Wavelength_400_to_950 | Spectral reflectance values for each wavelength (400–950 nm)|| Class_Label (if any) | Class label for classification tasks || Water_Potential (Ψ_W) | Water potential in MPa (for regression) | ---