Commonsense reasoning

Context (archaeology)

Task (project management)

Commonsense knowledge

Philosophy

Artificial intelligence

Economics

Physics

Biology

Discriminative model

Management

Repetition (rhetorical device)

Quantum mechanics

Knowledge-based systems

Fluency

Computer science

Coherence (philosophical gambling strategy)

Linguistics

Language model

Paleontology

Natural language processing

Transactions of the Association for Computational Linguistics

Story generation, namely, generating a reasonable story from a leading context, is an important but challenging task. In spite of the success in modeling fluency and local coherence, existing neural language generation models (e.g., GPT-2) still suffer from repetition, logic conflicts, and lack of long-range coherence in generated stories. We conjecture that this is because of the difficulty of associating relevant commonsense knowledge, understanding the causal relationships, and planning entities and events with proper temporal order. In this paper, we devise a knowledge-enhanced pretraining model for commonsense story generation. We propose to utilize commonsense knowledge from external knowledge bases to generate reasonable stories. To further capture the causal and temporal dependencies between the sentences in a reasonable story, we use multi-task learning, which combines a discriminative objective to distinguish true and fake stories during fine-tuning. Automatic and manual evaluation shows that our model can generate more reasonable stories than state-of-the-art baselines, particularly in terms of logic and global coherence.

A Knowledge-Enhanced Pretraining Model for Commonsense Story Generation