A Linguistically Interpretable Deep Fuzzy Classification System with Feature Transformation and Reconstruction

Classification tasks involving tabular data often require a balance between exceptional performance and heightened interpretability. To address this challenge, we propose a linguistically interpretable deep fuzzy classification system called FFT-FFR-RBFC. The system employs a Fuzzy Feature Transformation (FFT) unit, formed by employing a stacked architecture of multiple Takagi-Sugeno-Kang (TSK) fuzzy models with non-linear conclusions, to distill high-level fuzzy features from the input data, a Rule-Based Fuzzy Classifier (RBFC) unit to perform classification using these features, while a Fuzzy Feature Reconstruction (FFR) unit in tandem with the FFT to enhance the system's linguistic interpretability by remapping the high-level features back to their original space. The proposed approach is optimized by minimizing a composite loss function that balances classification and reconstruction losses, ensuring a harmonious interplay between performance and interpretability. Comprehensive evaluation across 20 diverse datasets demonstrates that the system's is exceptionally promising, particularly for high-dimensional or large-scale tabular data classification tasks, achieving superior classification performance while maintaining a high degree of interpretability.