Sammenlign metoder

	Graf Neurale Nettverk	Persistent Homology
Fagfelt	Nettverksanalyse	Topologi
Familie	Process / pipeline	Machine learning
Opprinnelsesår	2017–2018 (major variants)	2002
Opphavsperson	—	Edelsbrunner, Letscher & Zomorodian
Type	Deep learning on graph-structured data	Topological feature extraction algorithm
Opprinnelig kilde	Kipf, T.N. & Welling, M. (2017). Semi-Supervised Classification with Graph Convolutional Networks. International Conference on Learning Representations (ICLR).	Edelsbrunner, H., Letscher, D., & Zomorodian, A. (2002). Topological persistence and simplification. Discrete & Computational Geometry, 28(4), 511–533.
Alias	GNN, GCN, GAT, GraphSAGE	Topological Persistence, Persistence Barcodes, Persistent Betti Numbers, Kalıcı Homoloji
Relaterte	5	2
Sammendrag	A Graph Neural Network (GNN) is a deep learning architecture that operates directly on graph-structured data by combining node features with structural information through iterative neighborhood message passing. The three canonical variants — the Graph Convolutional Network (GCN) introduced by Kipf and Welling in 2017, the Graph Attention Network (GAT) introduced by Veličković et al. in 2018, and GraphSAGE — differ in how they aggregate neighbor information: GCN applies a spectral convolution over the full adjacency, GAT weights neighbors by learned attention scores, and GraphSAGE samples and aggregates local neighborhoods inductively, enabling generalization to unseen nodes.	Persistent homology is a method in topological data analysis that quantifies the multi-scale topological structure of data by tracking connected components, loops, and voids as a scale parameter varies. Introduced by Edelsbrunner, Letscher, and Zomorodian in 2002, it encodes topological features through their birth and death scales, producing persistence diagrams or barcodes that serve as compact, coordinate-free descriptors of shape. The approach is robust to noise and provides a mathematically rigorous bridge between discrete data and algebraic topology.