SFAHS - What does SFAHS stand for? The Free Dictionary
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More recently, Falcidieno and Giannini  extended the work in Kyprianou  to parse structured face adjacency hypergraphs (SFAHs) rather than simple face-edge graphs.
The features recognized by parsing the FAH graph are arranged into a hierarchical graph, the SFAH, which describes the hierarchy through adjacency relationships among the extracted features.