  CovID-19 genetics analysis is critical to determine virus type,virus variant
and evaluate vaccines. In this paper, SARS-Cov-2 RNA sequence analysis relative
to region or territory is investigated. A uniform framework of sequence SVM
model with various genetics length from short to long and mixed-bases is
developed by projecting SARS-Cov-2 RNA sequence to different dimensional space,
then scoring it according to the output probability of pre-trained SVM models
to explore the territory or origin information of SARS-Cov-2. Different sample
size ratio of training set and test set is also discussed in the data analysis.
Two SARS-Cov-2 RNA classification tasks are constructed based on GISAID
database, one is for mainland, Hongkong and Taiwan of China, and the other is a
6-class classification task (Africa, Asia, Europe, North American, South
American\& Central American, Ocean) of 7 continents. For 3-class classification
of China, the Top-1 accuracy rate can reach 82.45\% (train 60\%, test=40\%);
For 2-class classification of China, the Top-1 accuracy rate can reach 97.35\%
(train 80\%, test 20\%); For 6-class classification task of world, when the
ratio of training set and test set is 20\% : 80\% , the Top-1 accuracy rate can
achieve 30.30\%. And, some Top-N results are also given.
