Figure 1
From: Walk-weighted subsequence kernels for protein-protein interaction extraction
Substructures for kernels. A complex sentence with long range relations and substructures which are considered in each kernel are shown. a) a sentence with long range relations (bold →: shortest path), b) examples of v-walk, c) examples of e-walks, d) substructures considered in previous dependency kernel, e) substructures considered in extended dependency kernel, f) substructures for spectrum kernel, g) substructures for fixed-length subsequence kernel.