| Presentation | 2022-03-11 Context free grammar with tree structure analysis for online handwritten mathematical expression recognition Naruki Kitashima, Cuong Tuan Nguyen, Ikuko Shimizu, Masaki Nakagawa, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In mathematics exams, descriptive questions are effective for measuring the comprehension of examinees, but marking handwritten answers are costly and time-consuming. Therefore, it is anticipated to automate marking them. Their recognition and clustering by machine learning must be established. In this paper, we propose tree structure analysis of a given mathematical expression using Context-Free Grammar based on online mathematical expression recognition by BLSTM and CTC. In an evaluation experiment, it was confirmed that the recognition rate was improved by 5.47 points compared with the conventional method using the tree structure of a mathematical expression. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Machine Learning / Mathematical Expression Recognition / BLSTM / SRT / Context-Free Grammar |
| Paper # | PRMU2021-76 |
| Date of Issue | 2022-03-03 (PRMU) |
| Conference Information | |
| Committee | PRMU / IPSJ-CVIM |
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| Conference Date | 2022/3/10(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Differentiable rendering |
| Chair | Seiichi Uchida(Kyushu Univ.) |
| Vice Chair | Masakazu Iwamura(Osaka Pref. Univ.) / Mitsuru Anpai(Denso IT Lab.) |
| Secretary | Masakazu Iwamura(NTT) / Mitsuru Anpai(Tottori Univ.) |
| Assistant | Kouta Yamaguchi(CyberAgent) / Yusuke Matsui(Univ. of Tokyo) |
| Paper Information | |
| Registration To | Technical Committee on Pattern Recognition and Media Understanding / Special Interest Group on Computer Vision and Image Media |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Context free grammar with tree structure analysis for online handwritten mathematical expression recognition |
| Sub Title (in English) | |
| Keyword(1) | Machine Learning |
| Keyword(2) | Mathematical Expression Recognition |
| Keyword(3) | BLSTM |
| Keyword(4) | SRT |
| Keyword(5) | Context-Free Grammar |
| 1st Author's Name | Naruki Kitashima |
| 1st Author's Affiliation | Tokyo University of Agriculture and Technology(TUAT) |
| 2nd Author's Name | Cuong Tuan Nguyen |
| 2nd Author's Affiliation | Tokyo University of Agriculture and Technology(TUAT) |
| 3rd Author's Name | Ikuko Shimizu |
| 3rd Author's Affiliation | Tokyo University of Agriculture and Technology(TUAT) |
| 4th Author's Name | Masaki Nakagawa |
| 4th Author's Affiliation | Tokyo University of Agriculture and Technology(TUAT) |
| Date | 2022-03-11 |
| Paper # | PRMU2021-76 |
| Volume (vol) | vol.121 |
| Number (no) | PRMU-427 |
| Page | pp.pp.103-108(PRMU), |
| #Pages | 6 |
| Date of Issue | 2022-03-03 (PRMU) |