Table 13. Results of multiple random forests.

The mean OOB error for RFs constructed without length (-L OOBM) and their standard deviation (-L OOBSD), the mean OOB error for the RFS constructed with length (+L OOBM) and their standard deviation (+L OOBSD), and the mean feature importance of length (L ImpM) in the +L MRFs.

MRF	-L OOBM	-L OOBSD	+L OOBM	+L OOBSD	L ImpM
Chinese	40.85%	3.35%	39.36%	4.52%	0.51%
Japanese	34.07%	2.40%	31.69%	3.01%	5.47%
Korean	43.28%	3.09%	40.85%	2.85%	2.44%
Elicited	36.29%	1.98%	32.47%	2.44%	6.99%