ChartThinker: A Contextual Chain-of-Thought Approach to Optimized Chart Summarization

• URL: http://arxiv.org/abs/2403.11236v2
• Date: Thu, 25 Apr 2024 03:04:14 GMT
• Title: ChartThinker: A Contextual Chain-of-Thought Approach to Optimized Chart Summarization
• Authors: Mengsha Liu, Daoyuan Chen, Yaliang Li, Guian Fang, Ying Shen,
• Abstract summary: This study constructs a large-scale dataset of comprehensive chart-caption pairs and fine-tuning instructions on each chart. We propose an innovative chart summarization method, ChartThinker, which synthesizes deep analysis based on chains of thought. Built upon the curated datasets, our trained model consistently exhibits superior performance in chart summarization tasks.
• Score: 32.19963543411396
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Data visualization serves as a critical means for presenting data and mining its valuable insights. The task of chart summarization, through natural language processing techniques, facilitates in-depth data analysis of charts. However, there still are notable deficiencies in terms of visual-language matching and reasoning ability for existing approaches. To address these limitations, this study constructs a large-scale dataset of comprehensive chart-caption pairs and fine-tuning instructions on each chart. Thanks to the broad coverage of various topics and visual styles within this dataset, better matching degree can be achieved from the view of training data. Moreover, we propose an innovative chart summarization method, ChartThinker, which synthesizes deep analysis based on chains of thought and strategies of context retrieval, aiming to improve the logical coherence and accuracy of the generated summaries. Built upon the curated datasets, our trained model consistently exhibits superior performance in chart summarization tasks, surpassing 8 state-of-the-art models over 7 evaluation metrics. Our dataset and codes are publicly accessible.

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