The trouble for combining five summarizations with coefficients

Last evening, I was faced by this trouble.

I wanted to level the five correspoding summarizations and then calculate the coeeicients of each sentences. But the first stage leveling is very difficult. The difficulty is not of the algiorothm, insteadly of the five students' works. Because when they were doing the summarizations they adjust severally the articles withou any notice to others and me. At last term, I had solved most arbitrary changes. But there were more little changes to me.

First, I wanted to modify them by hand. But when I measured the workload, I found it hard to work by hand. So I began to program to solve them.

After all this program is difficult. And I will go on.