An Ion Exchange Mechanism Inspired Story Ending Generator for Different Characters

TL;DR

This paper introduces CoSEG, a novel story ending generator that customizes endings for different characters by modeling their personalities and using an ion exchange-inspired interaction mechanism, significantly improving ending quality.

Contribution

It proposes a character-oriented generator with a new vector exchange module inspired by ion exchange, enabling personalized story endings based on character personalities.

Findings

CoSEG outperforms state-of-the-art methods in ending quality.

It effectively personalizes endings for different characters.

Experimental results validate the model's ability to generate coherent, character-specific endings.

Abstract

Story ending generation aims at generating reasonable endings for a given story context. Most existing studies in this area focus on generating coherent or diversified story endings, while they ignore that different characters may lead to different endings for a given story. In this paper, we propose a Character-oriented Story Ending Generator (CoSEG) to customize an ending for each character in a story. Specifically, we first propose a character modeling module to learn the personalities of characters from their descriptive experiences extracted from the story context. Then, inspired by the ion exchange mechanism in chemical reactions, we design a novel vector breaking/forming module to learn the intrinsic interactions between each character and the corresponding context through an analogical information exchange procedure. Finally, we leverage the attention mechanism to learn effective character-specific interactions and feed each interaction into a decoder to generate character-orient endings. Extensive experimental results and case studies demonstrate that CoSEG achieves significant improvements in the quality of generated endings compared with state-of-the-art methods, and it effectively customizes the endings for different characters.