Spipoll auto encoder

Scheme of Bipartite auto encoder for Spipoll data set

\documentclass[border=0pt,tikz]{standalone}
\usepackage{amsmath}
\usepackage[dvipsnames]{xcolor}
\usepackage{pgfplots}
\usepackage{tikz-cd}

\begin{document}
\begin{tikzcd}
B,X_1,X_2 \arrow[r,"q"] \arrow[d, "\mathbf{1}( P^{\top}B>0)"] & Z_1, Z_2 \arrow[r,"p"] & \widehat{B} \arrow[d,"\Tilde{P}^T \widehat{B} "]  \\
B' &  & \widehat{B'} \\
\end{tikzcd}
\end{document}