Development of a grammatical processing method for symbols on graph structures and its applications

• Project/Area Number: 22700002
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Fundamental theory of informatics
• Research Institution: Ibaraki University
• Principal Investigator: FUJIYOSHI Akio 茨城大学, 工学部, 准教授 (00323212)
• Project Period (FY): 2010-10-20 – 2014-03-31
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
• Keywords: 情報学基礎 / 形式言語理論 / グラフ理論 / アルゴリズム / 数式OCR / 数式ＯＣＲ / 情報基礎

Research Abstract

This study develops a grammatical processing method for symbols on graph structures. Though grammatical processing methods of string have already been established, a method for symbols on graph structures has not been studied yet. This study successfully develops an algorithm solving the membership problem of labeled multidigraphs of bounded tree-width for a spanning tree automaton. This result can be applied to the developments of robust and efficient mathematical OCR and chemical structure formulae OCR. The developments of these OCR are also the purpose of this study.

Research Products

• [Journal Article] 文字認知障害者のための2次元コード方式のリスニングテストシステムの開発 (2013)
  • Author(s): 藤芳衛, 大澤彰子, 小山田寛史, 薬師寺駿介, 青松利明, 澤崎陽彦, 藤芳明生
  • Journal Title: 大学入試研究ジャーナル Volume: no.23 Pages: 113-120
  • Peer Reviewed
• [Journal Article] Tree Automata Moving Freely on Undirected Graphs (2012)
  • Author(s): Akio Fujiyoshi
  • Journal Title: Proceedings of the 1st International Workshop on Trends in Tree Automata and Tree Transducers (TTATT 2012) Volume: 1 Pages: 35-40
  • Peer Reviewed
• [Journal Article] Development of New Auditory Testing Media with Invisible 2-Dimensional Codes for Test-Takers with Print Disabilities (2012)
  • Author(s): Mamoru Fujiyoshi
  • Journal Title: Proceedings of the 13th International Conference on Computers Helping People with Special Needs (ICCHP 2012), LNCS Volume: 7382 Pages: 116-123
  • Peer Reviewed
• [Journal Article] 鉛筆を音声ICプレイヤに置き換えた紙筆テスト感覚の2種類の音声問題の評価 (2012)
  • Author(s): 藤芳 衛
  • Journal Title: 大学入試研究ジャーナル Volume: 22 Pages: 199-208
  • Peer Reviewed
• [Journal Article] Evaluation of Two Types of New Auditory Testing Media with Paper Booklets and Digital Audio Players for the Active Reading of Test-Takers with Print Disabilities (2012)
  • Author(s): Mamoru Fujiyoshi, et al.
  • Journal Title: Proceedings of the Workshop on Digitization and E-Inclusion in Mathematics and Science 2012 Pages: 107-114
  • Peer Reviewed
• [Journal Article] Minimum Spanning Tree Problem with Label Selection (2011)
  • Author(s): Akio Fujiyoshi and Masakazu Suzuki
  • Journal Title: IEICE Transactions on Information and Systems Volume: vol.E94-D, no.2 Pages: 233-239
  • NAID: 130000453884
  • Peer Reviewed
• [Journal Article] 読字障害者および重度の弱視者のための文字と音声のマルチモーダル問題の開発 (2011)
  • Author(s): 藤芳衛,南谷和範,藤芳明生,青松利明,澤崎陽彦
  • Journal Title: 大学入試研究ジャーナル Volume: no.21 Pages: 181-190
  • NAID: 40018764687
  • Peer Reviewed
• [Journal Article] Robust Method of Segmentation and Recognition of Chemical Structure Images in ChemInfty (2011)
  • Author(s): Akio Fujiyoshi, Koji Nakagawa, Masakazu Suzuki
  • Journal Title: Pre-proceedings of the Ninth International Workshop on Graphics Recognition (GREC 2011) Pages: 121-125
  • Peer Reviewed
• [Journal Article] Inconsistency-Driven Chemical Graph Construction in ChemInfty (2011)
  • Author(s): Karzel Daniel, Koji Nakagawa, Akio Fujiyoshi, Masakazu Suzuki
  • Journal Title: Pre-proceedings of the Ninth International Workshop on Graphics Recognition (GREC 2011) Pages: 181-190
  • Peer Reviewed
• [Journal Article] Minimum Spanning Tree Problem with Label Selection (2011)
  • Author(s): Akio Fujiyoshi, Masakazu Suzuki
  • Journal Title: IEICE Transactions on Information and Systems Volume: Vol.E94-D,No.2 Pages: 233-239
  • NAID: 130000453884
  • Peer Reviewed
• [Journal Article] Recognition of Directed Acyclic Graphs by Spanning Tree Automata (2010)
  • Author(s): Akio Fujiyoshi
  • Journal Title: Theoretical Computer Science Volume: vol.411, no.38-39 Pages: 3493-3506
  • Peer Reviewed
• [Journal Article] Grammatical Verification for Mathematical Formula Recognition Based on Context-Free Tree Grammar (2010)
  • Author(s): Akio Fujiyoshi, Masakazu Suzuki and Seiichi Uchida
  • Journal Title: Mathematics in Computer Science Volume: vol.3, no.3 Pages: 279-298
  • Peer Reviewed
• [Journal Article] A Variation of the Minimum spanning Tree Problem for the Application to Mathematical OCR (2010)
  • Author(s): Akio Fujiyoshi and Masakazu Suzuki
  • Journal Title: Journal of Math for Industry Volume: vol.2 Pages: 183-197
  • NAID: 120002548758
  • Peer Reviewed
• [Journal Article] A Variation of the Minimum spanning Tree Problem for the Application to Mathematical OCR (2010)
  • Author(s): Akio Fujiyoshi, Masakazu Suzuki
  • Journal Title: Journal of Math-for-Industry Volume: Vol.2 Pages: 183-197
  • NAID: 120002548758
  • Peer Reviewed
• [Journal Article] Grammatical Verification for Mathematical Formula Recognition Based on Context-Free Tree Grammar (2010)
  • Author(s): Akio Fujiyoshi, Masakazu Suzuki, Seiichi Uchida
  • Journal Title: Mathematics in Computer Science Volume: Vol.3,No.3 Pages: 279-298
  • Peer Reviewed
• [Journal Article] Robust Recognition Method of Chemical Structure Images for Japanese Published Patent Applications (2010)
  • Author(s): Akio Fujiyoshi, Koji Nakagawa, Masakazu Suzuki
  • Journal Title: Proceedings of the 9th IAPR International Workshop on Document Analysis Systems Pages: 511-514
  • Peer Reviewed
• [Journal Article] Ground-Truthed Dataset of Chemical Structure Images in Japanese Published Patent Applications (2010)
  • Author(s): Koji Nakagawa, Akio Fujiyoshi, Masakazu Suzuki
  • Journal Title: Proceedings of the 9th IAPR International Workshop on Document Analysis Systems Pages: 455-462
  • Peer Reviewed
• [Presentation] ラベル選択付き最小全域木問題と木オートマトンの全域木認識の同時解決と数式OCRへの応用 (2014)
  • Author(s): 藤芳明生
  • Organizer: 冬のLAシンポジウム
  • Place of Presentation: 京都大学数理解析研究所
• [Presentation] 全域木オートマトンによるラベル付き有向多重グラフの認識 (2013)
  • Author(s): 藤芳明生
  • Organizer: 夏のLAシンポジウム
  • Place of Presentation: 休暇村 志賀島
• [Presentation] 通常の学級における音声付教科書の活用事例の検討 (2013)
  • Author(s): 太田裕子, 大澤彰子, 藤芳明生, 藤芳衛
  • Organizer: 日本特殊教育学会 第51回大会
  • Place of Presentation: 明星大学日野キャンパス
• [Presentation] 障害受験者に対する高校入試の公平な受験機会を保障するためには出題問題量の適正化が必要 (2013)
  • Author(s): 藤芳衛, 大澤彰子, 青松利明, 澤崎陽彦, 藤芳明生
  • Organizer: 日本特殊教育学会 第51回大会
  • Place of Presentation: 明星大学日野キャンパス
• [Presentation] 文字認知障害児の能動的な学習を可能にする文字と音声のマルチモーダル教科書の試作 (2012)
  • Author(s): 藤芳明生, 藤芳衛, 大澤彰子
  • Organizer: 日本教育工学会 第28回全国大会
  • Place of Presentation: 長崎大学 (講演論文集,547-548)
  • Year and Date: 2012-09-15
• [Presentation] ラベル選択付最小連結全域部分グラフ問題と化学構造式OCR への応用 (2012)
  • Author(s): 藤芳明生,鈴木昌和
  • Organizer: 冬のL A シンポジウム
  • Place of Presentation: 京都大学数理解析研究所
  • Year and Date: 2012-02-01
• [Presentation] ラベル選択付最小連結全域部分グラフ問題と化学構造式OCRへの応用 (2012)
  • Author(s): 藤芳明生
  • Organizer: LAシンポジウム
  • Place of Presentation: 京都大学
  • Year and Date: 2012-02-01
• [Presentation] 木オートマトンを用いた化学グラフのスクリーニング手法 (2011)
  • Author(s): 藤芳明生
  • Organizer: 冬のLAシンポジウム
  • Place of Presentation: 京都大学数理解析研究所
  • Year and Date: 2011-02-03
• [Presentation] ホオートマトンを用いた化学グラフのスクリーニング手法 (2011)
  • Author(s): 藤芳明生
  • Organizer: LAシンポジウム
  • Place of Presentation: 京都大学数理解析研究所
  • Year and Date: 2011-02-03
• [Presentation] 文字認知障害児の能動的な学習を可能にする文字と音声のマルチモーダル教科書の試作
  • Author(s): 藤芳 明生
  • Organizer: 日本教育工学会
  • Place of Presentation: 長崎大学
• [Presentation] 文字認知障害者の受験を可能にする不可視2次元コード方式のリスニングテストシステムの開発
  • Author(s): 藤芳 衛
  • Organizer: 日本教育工学会
  • Place of Presentation: 長崎大学
• [Remarks]
  • URL: http://apricot.cis.ibaraki.ac.jp/moltouch/
• [Remarks]
  • URL: http://info.ibaraki.ac.jp/Profiles/5/0000475/profile.html
• [Remarks]
  • URL: http://info.ibaraki.ac.jp/Profiles/5/0000475/profile.html
• [Patent(Industrial Property Rights)] 2次元コード読取装置 (2012)
  • Inventor(s): 藤芳 明生
  • Industrial Property Rights Holder: 国立大学法人茨城大学
  • Industrial Property Rights Type: 特許
  • Filing Date: 2012-05-18
• [Patent(Industrial Property Rights)] ２次元コード読取装置 (2012)
  • Inventor(s): 藤芳 明生
  • Industrial Property Rights Holder: 茨城大学
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2012-114178
  • Filing Date: 2012-05-10