... bc, aba, aac, abc, bac, abacabcS =abacT =p r o d .101010 0102 1 1013λ λ+0λ0 0λ0( a, b, c, ab, ac, bc, abc)( a, b, c, aa, ab, ac, ba, bc, aba, aac, abc, bac, abac) u35 ... Japan{jun, isozaki, maeda}@cslab.kecl.ntt.co.jpAbstractConvolution kernels, such as sequence and tree ker-nels, are advantageous for both the concept and ac-curacy of many natural language ... )2uχ0.10.51.21111.50.90.8 a, b, c, aa, ab, ac, ba, bc, aba, aac, abc, bac, abacabcS =abacT =p r o d .101010 0102 1 1013λ λ+0λ0 0λ01.0τ =t h r e s h o l d2.511λ( a, b, c, ab, ac, bc, abc)(...