Fig 1.
Working principle for measuring text’s difficulty based on continuation index of character.
Table 1.
Average of continuation indexes of characters of same level texts with 6 levels difficulty in training corpus.
Table 2.
Average of continuation indexes of characters of same level texts with 3 levels difficulty in training corpus.
Table 3.
Average of continuation indexes of characters of same level texts with 2 levels difficulty in training corpus.
Table 4.
Thresholds of frequency and text distribution’s number of new and stable two-characters continuations.
Fig 2.
Working principle for measuring text’s difficulty based on i+1 algorithm.
Table 5.
Empirical values of "1" for measuring the difficulty of the texts with 6 levels difficulty in training corpus.
Table 6.
Empirical values of "1" for measuring the difficulty of the texts with 3 levels difficulty in training corpus.
Table 7.
Empirical values of "1" for measuring the difficulty of the texts with 2 levels difficulty in training corpus.
Table 8.
Weight coefficient scheme of continuations with single level of difficulty.
Fig 3.
Working principle for measuring text’s difficulty based on emerging tendency of two-character continuations.
Table 9.
Measurement results of testing texts’ difficulty with 6 levels difficulty based on different methods.
Table 10.
Measurement results of testing texts’ difficulty with 3 levels difficulty based on different methods.
Table 11.
Measurement results of testing texts’ difficulty with 2 levels difficulty based on different methods.
Table 12.
Measurement results of difficulty of composition testing texts in primary school using various methods.
Table 13.
Measurement results of difficulty of Chinese textbook testing texts in primary school using various methods.