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Home / Proceedings / Proceedings of the AAAI Conference on Artificial Intelligence

Accurate Structured-Text Spotting for Arithmetical Exercise Correction

February 1, 2023

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Authors

Yiqing Hu

Tencent


Yan Zheng

Tencent


Hao Liu

Tencent


Dequang Jiang

Tencent


Yinsong Liu

Tencent


Bo Ren

Tencent


DOI:

10.1609/aaai.v34i01.5410


Abstract:

Correcting arithmetical exercise is a labor intensive and time consuming task for primary school teachers all the time. To reduce their burdens, we propose Arithmetical Exercise Checker (AEC), which is the first system that automatically evaluates all arithmetical expressions (AEs) on exercise images. The major challenge is that AE is formed by printed and handwritten texts with particular arithmetical patterns (e.g., multi-line, fraction). Despite being part of AE, handwritten texts usually lead to zigzag boundaries and tangled rows. What's worse, AE may be arithmetical incorrect, which makes the contextual information less valuable for recognition. To tackle these problems, we introduce integrated detection, recognition and evaluation branches by leveraging AE's intrinsic features, namely 1) boundary indistinctive, 2) locally relevant patterns and 3) globally irrelevant symbols. Experimental results demonstrate that AEC yields a 93.72% correction accuracy on 40 kinds of mainstream primary arithmetical exercises. So far, the online service of AEC processes 75, 000 arbitrary exercises on average per day, and already reduced the burden of over 1, 000, 000 users. AEC shows the benefits for implementing an vision-based system as a way to aid teachers in reducing reduplicative tasks.

Topics: AAAI

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HOW TO CITE:

Yiqing Hu||Yan Zheng||Hao Liu||Dequang Jiang||Yinsong Liu||Bo Ren Accurate Structured-Text Spotting for Arithmetical Exercise Correction Proceedings of the AAAI Conference on Artificial Intelligence (2020) 686-693.

Yiqing Hu||Yan Zheng||Hao Liu||Dequang Jiang||Yinsong Liu||Bo Ren Accurate Structured-Text Spotting for Arithmetical Exercise Correction AAAI 2020, 686-693.

Yiqing Hu||Yan Zheng||Hao Liu||Dequang Jiang||Yinsong Liu||Bo Ren (2020). Accurate Structured-Text Spotting for Arithmetical Exercise Correction. Proceedings of the AAAI Conference on Artificial Intelligence, 686-693.

Yiqing Hu||Yan Zheng||Hao Liu||Dequang Jiang||Yinsong Liu||Bo Ren. Accurate Structured-Text Spotting for Arithmetical Exercise Correction. Proceedings of the AAAI Conference on Artificial Intelligence 2020 p.686-693.

Yiqing Hu||Yan Zheng||Hao Liu||Dequang Jiang||Yinsong Liu||Bo Ren. 2020. Accurate Structured-Text Spotting for Arithmetical Exercise Correction. "Proceedings of the AAAI Conference on Artificial Intelligence". 686-693.

Yiqing Hu||Yan Zheng||Hao Liu||Dequang Jiang||Yinsong Liu||Bo Ren. (2020) "Accurate Structured-Text Spotting for Arithmetical Exercise Correction", Proceedings of the AAAI Conference on Artificial Intelligence, p.686-693

Yiqing Hu||Yan Zheng||Hao Liu||Dequang Jiang||Yinsong Liu||Bo Ren, "Accurate Structured-Text Spotting for Arithmetical Exercise Correction", AAAI, p.686-693, 2020.

Yiqing Hu||Yan Zheng||Hao Liu||Dequang Jiang||Yinsong Liu||Bo Ren. "Accurate Structured-Text Spotting for Arithmetical Exercise Correction". Proceedings of the AAAI Conference on Artificial Intelligence, 2020, p.686-693.

Yiqing Hu||Yan Zheng||Hao Liu||Dequang Jiang||Yinsong Liu||Bo Ren. "Accurate Structured-Text Spotting for Arithmetical Exercise Correction". Proceedings of the AAAI Conference on Artificial Intelligence, (2020): 686-693.

Yiqing Hu||Yan Zheng||Hao Liu||Dequang Jiang||Yinsong Liu||Bo Ren. Accurate Structured-Text Spotting for Arithmetical Exercise Correction. AAAI[Internet]. 2020[cited 2023]; 686-693.


ISSN: 2374-3468


Published by AAAI Press, Palo Alto, California USA
Copyright 2022, Association for the Advancement of
Artificial Intelligence 1900 Embarcadero Road, Suite
101, Palo Alto, California 94303 All Rights Reserved

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