We used the 1-spectrum kernel developed by Leslie and colleagues [ 23] to map an amino acid sequence into a compositional vector.
It shows TiChu's F-OH exchange reaction follows a compositional vector TiO2Mg-1 F-2.
A compositional vector of d parts, x="[x1,…2,xd]d], is defined as a vector in which the only relevant information is contained in the ratios between its components.
As before, we create a compositional vector for each sub-sequence which contains their oligonucleotide frequencies (tetranucleotides, by default).
The procedure creates a compositional vector for each ORF, containing the frequencies of all possible oligonucleotides.
Subsequently, we map the nodes on the forward mesh to the structural image volume, and assign a compositional vector, {C f(r),C a(r)} for each forward node.
The former problem, by focusing on the entire compositional vector, implicitly incorporates the constraint that the fractional contributions of the component isoforms sum to one.
The performance of the SVM based models increases after adding a feature of length along with compositional vector.
We will use the representation learning techniques including word embeddings and compositional vector models, and apply a back-propagation algorithm based on gradient descent to learn the model.
