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[Download compiled PDF](https://github.com/MartinThoma/LaTeX-examples/blob/master/documents/write-math-ba-paper/write-math-ba-paper.pdf)
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Paper for [ICDAR 2015](http://2015.icdar.org/).
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## Spell checking
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* Spell checking `aspell --lang=en --mode=tex check write-math-ba-paper.tex`
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* Spell checking with `http://www.reverso.net/spell-checker`
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@ -62,7 +62,7 @@ set}. The TOP-$n$ error is defined as the fraction of the symbols where
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the correct class was not within the top $n$ classes of the highest
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probability.
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Various systems for mathematical symbol recognition with on-line data have been
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Several systems for mathematical symbol recognition with on-line data have been
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described so far~\cite{Kosmala98,Mouchere2013}, but most of them have neither
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published their source code nor their data which makes it impossible to re-run
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experiments to compare different systems. This is unfortunate as the choice of
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@ -72,7 +72,7 @@ systems which know all those classes will certainly have a higher TOP-$n$ error
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than systems which only accept one of them.
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Daniel Kirsch describes in~\cite{Kirsch} a system called Detexify which uses
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time warping to classify on-line handwritten symbols and claims to achieve a
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time warping to classify on-line handwritten symbols and reports a
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TOP-3 error of less than $\SI{10}{\percent}$ for a set of $\num{100}$~symbols.
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He also published his data on \url{https://github.com/kirel/detexify-data},
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which was collected by a crowdsourcing approach via
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@ -81,8 +81,10 @@ which were collected by a similar approach via \url{http://write-math.com} were
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used to train and evaluated different classifiers. A complete description of
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all involved software, data and experiments is given in~\cite{Thoma:2014}.
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\section{Steps in Handwriting Recognition}
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The following steps are used in many classifiers:
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The following steps are used for symbol classification:
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\begin{enumerate}
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\item \textbf{Preprocessing}: Recorded data is never perfect. Devices have
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@ -106,7 +108,7 @@ The following steps are used in many classifiers:
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recognition, this step will not be further discussed.
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\item \textbf{Feature computation}: A feature is high-level information
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derived from the raw data after preprocessing. Some systems like
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Detexify simply take the result of the preprocessing step, but many
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Detexify take the result of the preprocessing step, but many
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compute new features. This might have the advantage that less
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training data is needed since the developer can use knowledge about
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handwriting to compute highly discriminative features. Various
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@ -537,11 +539,13 @@ The aim of this work was to develop a symbol recognition system which is easy
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to use, fast and has high recognition rates as well as evaluating ideas for
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single symbol classifiers. Some of those goals were reached. The recognition
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system $B_{2,c}'$ evaluates new recordings in a fraction of a second and has
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acceptable recognition rates. Many algorithms were evaluated.
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However, there are still many other algorithms which could be evaluated and, at
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the time of this work, the best classifier $B_{2,c}'$ is only available
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through the Python package \texttt{hwrt}. It is planned to add an web version
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of that classifier online.
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acceptable recognition rates.
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% Many algorithms were evaluated.
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% However, there are still many other algorithms which could be evaluated and, at
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% the time of this work, the best classifier $B_{2,c}'$ is only available
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% through the Python package \texttt{hwrt}. It is planned to add an web version
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% of that classifier online.
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\bibliographystyle{IEEEtranSA}
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\bibliography{write-math-ba-paper}
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