Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

The comprehensive dominance, η(Bi) and ranking of all candidate books_
| Benchmark books | Comprehensive dominance | η(Bi) | Ranking |
|---|---|---|---|
| B1 | 6.714 | 1.000 | 1th |
| B2 | 2.325 | 0.953 | 3th |
| B3 | 5.401 | 0.986 | 2th |
| B4 | -14.815 | 0.769 | 5th |
| B5 | -11.959 | 0.799 | 4th |
| B6 | -22.123 | 0.690 | 6th |
| B7 | -37.006 | 0.530 | 7th |
| B8 | -41.461 | 0.482 | 9th |
| B9 | -40.341 | 0.494 | 8th |
| B10 | -75.107 | 0.121 | 10th |
| B11 | -81.314 | 0.054 | 11th |
| B12 | -86.359 | 0.000 | 12th |
Linguistic complexity and reading experience of the four Chinese classic novels_
| Book title | Linguistic complexity | Reading experience | Reasoning |
|---|---|---|---|
| Journey to the West (西游记) | High difficulty | Low difficulty | Linguistic complexity: Rich in classical Chinese expressions, cultural references, and metaphors. |
| Reading experience: Linear and episodic storyline, vivid characters, and engaging plot make it easy to follow and enjoyable. | |||
| Romance of the Three Kingdoms (三国演义) | High difficulty | High difficulty | Linguistic complexity: Complex sentence structures, historical terms, and strategic descriptions. |
| Reading experience: Dense historical and military content, with intricate relationships and strategies that require significant understanding. | |||
| Water Margin (水浒传) | Medium difficulty | Medium difficulty | Linguistic complexity: More straightforward classical Chinese with less challenging syntax. |
| Reading experience: Many characters and subplots demand attention, but the heroic themes and action sequences are engaging. | |||
| Dream of the Red Chamber(红楼梦) | High difficulty | High difficulty | Linguistic complexity: Elaborate classical Chinese with poetic and symbolic elements. |
| Reading experience: Complex emotional depth, subtle cultural references, and numerous characters and relationships make it demanding. |
The entropy value and weight of each criterion_
| Criteria | Quantitative criterion | |||||||
|---|---|---|---|---|---|---|---|---|
| C11 | C12 | C13 | C21 | C22 | C31 | C32 | C41 | |
| Entropy value | 0.579 | 0.602 | 0.602 | 0.684 | 0.730 | 0.693 | 0.670 | 0.728 |
| Initial weight | 0.127 | 0.133 | 0.132 | 0.150 | 0.160 | 0.152 | 0.147 | 0.131 |
| Normalized weights | 0.076 | 0.080 | 0.079 | 0.090 | 0.096 | 0.091 | 0.088 | 0.072 |
| Ranking | 8th | 6th | 7th | 3th | 1th | 2th | 4th | 10th |
The existing graded reading systems_
| Graded reading system | Description | Limitation |
|---|---|---|
| A-Z System (Hiebert & Tortorelli, 2022; McNamara et al., 2014) | Categorizes books into 26 levels (A-Z), covering language difficulty and thematic content, with added factors like font and illustrations. | Primarily designed for English; not easily adaptable to languages with different script systems. |
| Oxford Reading System (Gorard & See, 2016; Smith & Doe, 2018) | Developed by Oxford University Press, uses vertical levels (based on age, cognitive and emotional development) and horizontal stages (e.g. phonics, comprehension). | Structured for English-speaking readers; lacks accommodation for cultural and linguistic differences in other regions. |
| Developmental Reading Assessment (DRA) (Beaver & Carter, 2024; Johnson & Lee, 2017) | A U.S. standard assessment evaluating reading comprehension, lexical knowledge, and reading strategies through progressive testing. | Primarily assesses English skills; limited in flexibility for application to other linguistic contexts. |
| Lexile System (Hiebert, 2005; McNamara et al., 2014; Smith et al., 2016; Zeng & Fan, 2017) | Uses semantic and grammatical complexity to determine reader levels and text difficulty, matching readers with suitable texts. | Focuses on English text; lacks cultural adaptation for non-English readers. |
| Chinese Southern Graded Reading Center (Nur, 2019; Qiang et al., 2020) | Based on the Lexile framework, divides grades 1-9 into four stages, considering text difficulty, narrative structure, and the integration of text and visuals. | Primarily focuses on linguistic complexity; limited attention to reader interest and emotional engagement. |
| Shanghai Graded Reading Ability Standards (Holzknecht et al., 2022; Kidwai et al., 2016; Zhao, 2020) | Adapts Lexile’s approach to measure reading attitudes, cognitive processes, and text difficulty in a Chinese context. | Relies on linguistic complexity and overlooks personalized reading interests and emotional dimensions. |