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**Abstract:** This paper introduces a novel framework, Federated Differential Privacy Optimization via Adaptive Noise Injection and Gradient Pruning (FDPO-ANIGP), for enhancing privacy and efficiency in federated learning environments. Addressing the trade-off between privacy protection and model accuracy, FDPO-ANIGP dynamically adjusts the noise injection magnitude and performs gradient pruning based on local data sensitivity estimations, leading to improved performance over existing differentially private Federated Learning (DPFL) methods.

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Smart Güneşin FDPO oranı ile BIST endeks verileri ve KAP açıklamaları arasındaki farkı, 9–10 Aralık 2025 tarihleri çerçevesinde ayrıntılı olarak inceliyoruz.

**Abstract:** This paper presents a novel federated learning framework, Federated Differential Privacy Optimization with Adaptive Hyperparameter Tuning (FDPO-AHT), designed to mitigate the trade-off between data privacy and model performance in distributed medical image classification. Leveraging a combination of differential privacy techniques, adaptive hyperparameter optimization via Bayesian optimization, and a specialized aggregation protocol, FDPO-AHT significantly enhances model accuracy while maintaining strict privacy guarantees within a decentralized medical imaging network.

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Based on the intramolecular energy transfer, relative gains of 10.5 and 8.5 dB cm −1 at 1535 and 1550 nm respectively are demonstrated in Er III coordination polymer [Er(DBTTA) 3 (FDPO)] n -doped waveguides under excitations of light-emitting diode instead of laser pumping. This study is expected to achieve the application of polymer waveguide amplifiers in planar photonic integration and facilitate low-cost packaging of the waveguide and pump sources. Abstract 9,9-bis (diphenylphosphorylphenyl) fluorene (FDPO) and dibenzotetrathienoacene (DBTTA), are synthesized as the neutral and anionic ligands, respectively, to prepare the Er III coordination polymer [Er(DBTTA) 3 (FDPO)] n . Based on the intramolecular energy transfer, optical gains at 1.5 µm are demonstrated in [Er(DBTTA) 3 (FDPO)] n -doped polymer waveguides under excitations of low-power light-emitting diodes (LEDs) instead of laser pumping. A ligand-sensitization scheme between organic ligands and Er 3+ ions under an excitation of an ultraviolet (UV) LED is established. Relative gains of 10.5 and 8.5 dB cm −1 are achieved at 1.53 and 1.55 µm, respectively, on a 1-cm-long SU-8 channel waveguide with a cross-section of 2 × 3 µm 2 and a 1.5-µm-thick [Er(DBTTA) 3 (FDPO)] n -doped polymethylmethacrylate (PMMA) as upper cladding. The Er III coordination polymer [Er(DBTTA) 3 (FDPO)] n can be conveniently integrated with various low-loss inorganic waveguides to compensate for optical losses in the C-band window. Moreover, by relying on the intramolecular energy transfer and UV LED top-pumping technology, it is easy to achieve coupling packaging of erbium-doped waveguide amplifiers (EDWAs) with pump sources in planar photonic integrated chips, effectively reducing the commercial costs.