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    • Keywords


      Mathematical expression recognition; performance evaluation; linear representation; Levenshtein edit distance.

    • Abstract


      In this paper, we have addressed the problem of automated performance evaluation of Mathematical Expression (ME) recognition. Automated evaluation requires that recognition output and ground truth in some editable format like LaTeX, MathML, etc. have to be matched. But standard forms can have extraneous symbols or tags. For example, <mo> tag is added for an operator in MathML and \begin{array} is used to encoded matrices in LaTeX. These extraneous symbols are also involved in matching that is not intuitive. For that, we have proposed a novel structure encoded string representation that is independent of any editable format. Structure encoded strings retain the structure (spatial relationships like superscript, subscript, etc.) and do not contain any extraneous symbols. As structure encoded strings give the linear representation of MEs, Levenshtein edit distance is used as a measure for performance evaluation. Therefore, in our approach, recognition output and ground truth in LaTeX form are converted to their corresponding structure encoded strings and Levenshtein edit distance is computed between them.

    • Author Affiliations


      P Pavan Kumar1 Arun Agarwal1 Chakravarthy Bhagvati1

      1. School of Computer and Information Sciences, University of Hyderabad, Hyderabad 500 046, India
    • Dates

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