关键词: 数学公式识别, 数学公式定位, 电子文档, 中文文档

Abstract: Different from the traditional formula identification methods for scanned images and Latin documents, a formula identification method which considers the characteristics of digital Chinese documents is proposed to identify both isolated and embedded formulae using both machine learning techniques and heuristic rules. Text line detection strategies and word segmentation rules are proposed towards Chinese documents, effective features and machine learning algorithms of formula identification from Chinese documents are selected, and post-processing techniques, including text line or word merging, are proposed to overcome the over-segmentation problems. The experimental results show that the proposed method achieves satisfactory results in identifying formulae from digital Chinese documents. Furthermore, a public Chinese document dataset is constructed in order to facilitate the fair comparison between different formula identification methods.

Key words: mathematical formula recognition, mathematical formula identification, digital documents, Chinese documents