GFT

GFT is an acronym with several meanings depending on the context. In mathematics and data processing, GFT commonly denotes the Graph Fourier Transform, a generalization of the classical Fourier transform to signals defined on graphs. The Graph Fourier Transform represents a signal on the nodes of a graph in terms of graph frequencies, using the eigenvectors of the graph Laplacian (or related operators) as a basis. This framework enables analysis, filtering, and denoising of data on networks such as social graphs, sensor grids, and transportation systems. The inverse transform reconstructs the original signal from its spectral components, and variations of the GFT exist based on different graph representations and Laplacians.

GFT Technologies SE refers to a German information technology services company that focuses on the financial services industry. It provides consulting, systems integration, and outsourcing services, with a client base that includes banks, insurers, and other financial institutions. The company operates internationally, with a presence in Europe and Latin America, and positions itself around digital transformation, cloud, and engineering services for financial technology environments.

Because GFT is an acronym used in multiple domains, its specific meaning should be inferred from the surrounding context. In addition to Graph Fourier Transform and the German IT services company, other organizations or terms may also use the same abbreviation.