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Latex equation
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| [latex]sim(a,b)=\frac{\sum_{p\epsilon P}({r_{a,p}}-\bar{r}_{a})(r_{b,p}-\bar{r}_{b})}{\sqrt{\sum _{p\epsilon P}(r_{a,p}-\bar{r}_{a})^{2}}{\sqrt{\sum _{p\epsilon P}(r_{b,p}-\bar{r}_{b})^{2}}}}[/latex] |
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