How to 1- Create a 4store dump sudo 4s-dump http://localhost:8081/sparql/ -a -o ./data 2- Convert the 4store dump to Virtuoso dump ./4s-to-virtuoso.sh ./data . 3- Import the Virtuoso dump ./import_to_virtuoso.sh <virtuoso_user> <virtuoso_pwd> "./processed_files" 4- Check if the triple count corresponds to the count in the dump files ruby compare_counts.rb will generate a csv called graph_comparaison.csv