Readability Evaluation of Books in Chinese as a Foreign Language Using the Machine Learning Algorithm

Table 4

Sorting results of text dimension feature in books in foreign languages words of Chinese based on a machine learning algorithm.

Second category		Forth category
Features	RMSE	Features	RMSE
A total number of characters	0.251	A total number of characters	0.264
Total number of sentences (including commas)	0.248	Total number of sentences (without commas)	0.273
Total number of sentences (without commas)	0.264	Total number of sentences (including commas)	0.279
The average character count per sentence (excluding commas)	0.294	The average number of characters per sentence (excluding commas)	0.291
The average character count per sentence (including commas)	0.301	The average number of characters per sentence (including commas)	0.295
Average characters per paragraph	0.303	Average characters per paragraph	0.304
Paragraph	0.318	Paragraph	0.307
All features	0.234	All features	0.241
Optimal combination	0.221	Optimal combination	0.235