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# Visualizing Data using t-SNE - Journal of Machine Learning ...

almost inﬁnitesimal (for reasonable values of the variance of the **Gaussian**, σi). Mathematically, the conditional probability pjji is given by pjji = exp k xi xjk2=2σ2 i ∑k6= i exp k xi xkk2=2σ2 i; (1) where σi is the variance of the **Gaussian** that is centered on datapoint xi. The method for determining the value of σi is presented later ...

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