在這篇論文中，我們指出現存的故事生成方法缺少了「多層敘事」(narrative level)的概念，並希望設計一個較為汎用的理論來描述且能與現存方法整合應用。我們首先介紹「真實感與戲劇張力」的兩難，並說明這兩者是如何得以相容；這個結果讓我們得到一種看待虛構性的方法，此即是我們理論的一項基礎元素—「重述關係」(re-describing relation)。繼續展開重述關係，我們可以看到兩個關於媒體對人產生的印象(depiction)的重要觀念：「世界」及「分析性描述」；我們用這些概念設計了形式化的方法，並試著形式化四個常見的修辭手法，最後再試著為 Alfred Noyes 的短篇故事"Midnight Express"建模。

In this thesis, we pointed out the lack of the concept of narrative level in existing works of story generation and aimed at devising a general theory for it that can be fused with the existing works. Started from a dilemma of "balancing reality and dramatic effects", we showed how the ideas are compatible, and it leads to a conception of fictionality, which is our fundamental element –\textit{the re-describing relation}– of the theory. Manifesting the re-describing relation, it shows two important concepts: \textit{world} and \textit{analytic description}, we then derived the formalization from them, and applied on modelling four common rhetorical devices and a short story "Midnight Express" by Alfred Noyes.

摘要 i
Abstract ii
Acknowledgement iii
List of Figures vii
1 Introduction 1
2 The dilemma, depiction of medium, and the concept of fictionality 5
3 The concepts embodying the depiction 14
3.1 two basic structural elements 14
3.2 the depiction–the concept of ”world” 17
3.3 the structure of depicting–the analytic descriptions 20
4 formal definition and applications 23
4.1 Modelling rhetorical devices 24
4.1.1 Repetition 25
4.1.2 Hesitation 25
4.1.3 Möbius Strip 26
4.1.4 Metalepsis 26
4.2 Modelling”MidnightExpress” 27
5 summary and future works 36
References 38

[1] James R Meehan. Tale-spin, an interactive program that writes stories. In Ijcai, volume 77, pages 91–98, 1977.
[2] Douwe Terluin. From Fabula to Fabulous: Using Discourse Structure Relations to Separate Paragraphs in Automatically Generated Stories. PhD thesis, Ph. D. thesis, 2008.
[3] Mark O Riedl and Robert Michael Young. Narrative planning: Balancing plot and character. Journal of Artificial Intelligence Research, 39:217–268, 2010.
[4] Yun-Gyung Cheong and R Michael Young. Suspenser: A story generation system for suspense. IEEE Transactions on Computational Intelligence and AI in Games, 7(1): 39–52, 2014.
[5] Vincenzo Lombardo and Antonio Pizzo. Ontology–based visualization of charac- ters’ intentions. In International Conference on Interactive Digital Storytelling, pages 176–187. Springer, 2014.
[6] Nicolas Szilas and Urs Richle. Towards a computational model of dramatic tension. In 2013 Workshop on Computational Models of Narrative. Schloss Dagstuhl-Leibniz-Zentrum fuer Informatik, 2013.
[7] John Pier. Narrative levels (revised version; uploaded 23 april 2014). URL http://www.lhn.uni-hamburg.de/article/ narrative-levels-revised-version-uploaded-23-april-2014.
[8] Fanfan Chen. From hypotyposis to metalepsis: Narrative devices in contemporary fantastic fiction. In Forum for Modern Language Studies, volume 44, pages 394–411. Oxford University Press, 2008.
[9] Alfred Noyes. Midnight express. English Ghost Stories, page 92, 1935.
[10] Kendall L Walton. Fearing fictions. The Journal of Philosophy, 75(1):5–27, 1978.
[11] Kendall L Walton. Mimesis as make-believe: On the foundations of the representational arts. Harvard University Press, 1990.