数据格式：
1 0.0416667 0.778667 0.778667 2 0.0833333 0.767444 0.773055 3 0.0882353 0.745033 0.763715 4 0.0909091 0.732737 0.75597 5 0.106383 0.905655 0.785907 6 0.12766 0.720142 0.774946 7 0.0864198 0.730465 0.768592 8 0.0792079 0.711815 0.761495 9 0.0849057 0.703917 0.755097 10 0.0943396 0.649519 0.744539
matlab程序：
[id, kn, score, wScore]=textread('D:\matlab\log1.txt', '%d%f%f%f');
%plot(wScore);
%hold on
%plot(score);
%plot(kn);
plot(id,kn,id,wScore,id,score);
%plot(id,kn,id,wScore);