GNN-Based Skyline Query Processing for Large-Scale and Incomplete Graphs

Skyline queries are crucial in database management, selecting optimal points from multi-dimensional datasets based on dominance relationships. They are widely used in decision-making, recommendation systems, and data filtering. However, traditional skyline algorithms struggle with large volumes and missing data, leading to high computational costs and inefficiencies. This research proposes a hybrid approach that integrates the ISkyline dominance graph technique with Graph Neural Networks (GNNs) to improve skyline query performance under such conditions. The GNN component is utilized to predict skyline tuples in the presence of missing or incomplete data. Evaluation on both synthetic and real-world datasets demonstrates improved accuracy and efficiency compared with established methods such as ISkyline, SIDS, and OIS. This research demonstrates the potential to improve query processing efficiency and to support applications in e-commerce, finance, and smart data systems. ABSTRAK: Pertanyaan latar langit adalah penting dalam pengurusan pangkalan data, iaitu dengan memilih titik optimum daripada set data berbilang dimensi berdasarkan hubungan dominasi. Ia digunakan secara meluas dalam membuat keputusan, sistem pengesyoran, dan penapisan data. Walau bagaimanapun, algoritma latar langit tradisional bergelut dengan kuantiti data yang besar dan data menghilang, membawa kepada peningkatan kos pengiraan dan ketidakcekapan. Kajian ini mencadangkan pendekatan hibrid yang mengintegrasi teknik graf penguasaan ISkyline dengan Rangkaian Graf Neural (GNNs) bagi meningkatkan prestasi pertanyaan latar langit berkeadaan sedemikian. Komponen GNN digunakan bagi meramalkan tupel latar langit dengan kehadiran data menghilang atau tidak lengkap. Penilaian pada kedua-dua set data sintetik dan dunia nyata menunjukkan peningkatan ketepatan dan kecekapan jika dibandingkan dengan kaedah sedia ada seperti ISkyline, SIDS dan OIS. Kajian ini menunjukkan potensi bagi mencipta pemprosesan pertanyaan yang lebih cekap, menyokong aplikasi e-dagang, kewangan dan sistem data pintar.