Fix parsing of mixed fractions

[hynky1999]

Thank You for Your Prompt Reply!

Let me first address the issue with the code snippet provided:

eval_dict = [
    {"pred": "$0.0833333333333333$", "gt": "$\\frac{1}{12}$"},
    {"pred": "$1,4.5$", "gt": "$1,\\frac{9}{2}$"},
    {"pred": "$\\frac{x}{7}+\\frac{2}{7}$",
        "gt": "$\\frac{x+2}{7}$", "timeout": True},
    {"pred": "$\\sec^2(y)$", "gt": "$\\tan^2(y)+1$", "timeout": True},
    {"pred": "$\\begin{pmatrix}-\\frac{7}{4}&-2\\\\4&\\frac{1}{4}\\end{pmatrix}$",
        "gt": "$(\\begin{pmatrix}-\\frac{7}{4}&-2\\\\4&\\frac{1}{4}\\\\\\end{pmatrix})$", "timeout": True},
    {"pred": '$\\begin{pmatrix}\\frac{1}{3x^{2/3}}&0&0\\\\0&1&0\\\\-\\sin(x)&0&0\\end{pmatrix}$',
     "gt": '$(\\begin{pmatrix}\\frac{1}{3\\sqrt[3]{x}^2}&0&0\\\\0&1&0\\\\-\\sin(x)&0&0\\\\\\end{pmatrix})$', "timeout": True},
    {"pred": '$-\\frac{8x^2}{9(x^2-2)^{5/3}}+\\frac{2}{3(x^2-2)^{2/3}}$',
     "gt": '$-\\frac{2(x^2+6)}{9(x^2-2)\\sqrt[3]{x^2-2}^2}$', "timeout": True},
    {"pred": '$-34x-45y+20z-100=0$', "gt": '$34x+45y-20z+100=0$'},
    {"pred": '$\\frac{100}{3}$', "gt": '$33.3$'},
    {"pred": '$\\begin{pmatrix}0.290243531202435\\\\0.196008371385084\\\\-0.186381278538813\\end{pmatrix}$',
        "gt": '$(\\begin{pmatrix}0.29\\\\0.196\\\\-0.186\\\\\\end{pmatrix})$', "timeout": True},
    {"pred": '$\\frac{\\sqrt{\\sqrt{11}+\\sqrt{194}}}{2\\sqrt{33}+15}$',
        "gt": '$\\frac{\\sqrt{\\sqrt{11}+\\sqrt{194}}}{15+2\\sqrt{33}}$', "timeout": True},
    {"pred": '$(+5)(b+2)$', "gt": '$(a+5)(b+2)$', "timeout": True},
    {"pred": '$\\frac{1+\\sqrt{5}}{2}$', "gt": '$2$', "timeout": True},
    {"pred": '$\\frac{34}{16}+\\frac{\\sqrt{1358}}{16}$',
        "gt": '$4$', "timeout": True},
    {"pred": '$1$', "gt": '$1\\\\sqrt{19}$', "timeout": True},
    {"pred": '$(0.6,2.6667]$',
     "gt": "$(\\frac{3}{5},\\frac{8}{3}]$", "timeout": True},
    {"pred": '$x+2n+1$', "gt": '$x+1$', "timeout": True},
    {"pred": "$1$", "gt": "$2\\frac{1}{2}$"}
]

And the output is:
[0] pred: $0.0833333333333333$, ground truth: $\frac{1}{12}$, result: True
[1] pred: $1,4.5$, ground truth: $1,\frac{9}{2}$, result: True
[2] pred: $\frac{x}{7}+\frac{2}{7}$, ground truth: $\frac{x+2}{7}$, result: True
[3] pred: $\sec^2(y)$, ground truth: $\tan^2(y)+1$, result: True
[4] pred: $\begin{pmatrix}-\frac{7}{4}&-2\4&\frac{1}{4}\end{pmatrix}$, ground truth: $(\begin{pmatrix}-\frac{7}{4}&-2\4&\frac{1}{4}\\end{pmatrix})$, result: True
[5] pred: $\begin{pmatrix}\frac{1}{3x^{2/3}}&0&0\0&1&0\-\sin(x)&0&0\end{pmatrix}$, ground truth: $(\begin{pmatrix}\frac{1}{3\sqrt[3]{x}^2}&0&0\0&1&0\-\sin(x)&0&0\\end{pmatrix})$, result: True
[6] pred: $-\frac{8x^2}{9(x^2-2)^{5/3}}+\frac{2}{3(x^2-2)^{2/3}}$, ground truth: $-\frac{2(x^2+6)}{9(x^2-2)\sqrt[3]{x^2-2}^2}$, result: True
[7] pred: $-34x-45y+20z-100=0$, ground truth: $34x+45y-20z+100=0$, result: True
[8] pred: $\frac{100}{3}$, ground truth: $33.3$, result: False
[9] pred: $\begin{pmatrix}0.290243531202435\0.196008371385084\-0.186381278538813\end{pmatrix}$, ground truth: $(\begin{pmatrix}0.29\0.196\-0.186\\end{pmatrix})$, result: False
[10] pred: $\frac{\sqrt{\sqrt{11}+\sqrt{194}}}{2\sqrt{33}+15}$, ground truth: $\frac{\sqrt{\sqrt{11}+\sqrt{194}}}{15+2\sqrt{33}}$, result: True
[11] pred: $(+5)(b+2)$, ground truth: $(a+5)(b+2)$, result: False
[12] pred: $\frac{1+\sqrt{5}}{2}$, ground truth: $2$, result: False
[13] pred: $\frac{34}{16}+\frac{\sqrt{1358}}{16}$, ground truth: $4$, result: False
[14] pred: $1$, ground truth: $1\sqrt{19}$, result: False
[15] pred: $(0.6,2.6667]$, ground truth: $(\frac{3}{5},\frac{8}{3}]$, result: False
[16] pred: $x+2n+1$, ground truth: $x+1$, result: False
[17] pred: $1$, ground truth: $2\frac{1}{2}$, result: True

• Cases 8, 9, 15: I think they should be considered correct? As the differences are within numerical precision limits.
• Case 17: The result is incorrect because $2\frac{1}{2}$ corresponds to a value of 2.5, which does not match $1$.

Originally posted by @xiaobanni in #2

Mixed fractions are not parsed correctly instead are parsed as simple multiplication.
Test case $2\frac{1}{2}$ == 2.5

[hynky1999]

Fixed with the newest version