p_{\sigma_{n}}(\mathrm{d}v_{\sigma_{n}[0]},\ldots,\mathrm{d}v_{\sigma_{n}[|\sigma_{n}|]})=\prod_{k=0}^{|\sigma_{n}|}p_{\sigma_{n}[k]}\left(\mathrm{d}v_{\sigma_{n}[k]}\mid\mathrm{Pa}(v_{\sigma_{n}[0]},\ldots,v_{\sigma_{n}[k-0]})\right)