I need to center the arrow that goes from "Validation Ratings" to Training. I also need to make that the arrow that is pointing from "Training" to "Fit Model" touches the box. Last but not least, I would like to add a second rectangle below the "training validation" box that says "training test"
\documentclass[tikz,border=3.14mm]{standalone}
\usetikzlibrary{positioning,fit}
\usepackage{lmodern}
\makeatletter
\pgfkeys{/pgf/.cd, % from https://tex.stackexchange.com/a/12039/121799
parallelepiped offset x/.initial=2mm,
parallelepiped offset y/.initial=2mm
}
\pgfdeclareshape{parallelepiped}
{
\inheritsavedanchors[from=rectangle] % this is nearly a rectangle
\inheritanchorborder[from=rectangle]
\inheritanchor[from=rectangle]{north}
\inheritanchor[from=rectangle]{north west}
\inheritanchor[from=rectangle]{north east}
\inheritanchor[from=rectangle]{center}
\inheritanchor[from=rectangle]{west}
\inheritanchor[from=rectangle]{east}
\inheritanchor[from=rectangle]{mid}
\inheritanchor[from=rectangle]{mid west}
\inheritanchor[from=rectangle]{mid east}
\inheritanchor[from=rectangle]{base}
\inheritanchor[from=rectangle]{base west}
\inheritanchor[from=rectangle]{base east}
\inheritanchor[from=rectangle]{south}
\inheritanchor[from=rectangle]{south west}
\inheritanchor[from=rectangle]{south east}
\backgroundpath{
% store lower right in xa/ya and upper right in xb/yb
\southwest \pgf@xa=\pgf@x \pgf@ya=\pgf@y
\northeast \pgf@xb=\pgf@x \pgf@yb=\pgf@y
\pgfmathsetlength\pgfutil@tempdima{\pgfkeysvalueof{/pgf/parallelepiped offset x}}
\pgfmathsetlength\pgfutil@tempdimb{\pgfkeysvalueof{/pgf/parallelepiped offset y}}
\def\ppd@offset{\pgfpoint{\pgfutil@tempdima}{\pgfutil@tempdimb}}
\pgfpathmoveto{\pgfqpoint{\pgf@xa}{\pgf@ya}}
\pgfpathlineto{\pgfqpoint{\pgf@xb}{\pgf@ya}}
\pgfpathlineto{\pgfqpoint{\pgf@xb}{\pgf@yb}}
\pgfpathlineto{\pgfqpoint{\pgf@xa}{\pgf@yb}}
\pgfpathclose
\pgfpathmoveto{\pgfqpoint{\pgf@xb}{\pgf@ya}}
\pgfpathlineto{\pgfpointadd{\pgfpoint{\pgf@xb}{\pgf@ya}}{\ppd@offset}}
\pgfpathlineto{\pgfpointadd{\pgfpoint{\pgf@xb}{\pgf@yb}}{\ppd@offset}}
\pgfpathlineto{\pgfpointadd{\pgfpoint{\pgf@xa}{\pgf@yb}}{\ppd@offset}}
\pgfpathlineto{\pgfqpoint{\pgf@xa}{\pgf@yb}}
\pgfpathmoveto{\pgfqpoint{\pgf@xb}{\pgf@yb}}
\pgfpathlineto{\pgfpointadd{\pgfpoint{\pgf@xb}{\pgf@yb}}{\ppd@offset}}
}
}
\makeatother
\begin{document}
\begin{tikzpicture}[standard/.style={minimum width=3cm,draw,align=center},
font=\tiny]
\begin{scope}[local bounding box=boxes]
\node[standard,minimum height=4cm] (TS) {Training \\ ratings};
\node[standard,below=-\pgflinewidth\space of TS] (VS) {Validation \\ ratings};
\node[standard,below=-\pgflinewidth\space of VS] (TeS) {Test ratings};
\path (TeS.south west) -- (TS.north west) node[midway,left]{Users};
\path (TS.north west) -- (TS.north east) node[midway,above]{Products};
\node[right=1.5cm of TeS.north east,standard] (T1) {Training};
\node[right=-\pgflinewidth\space of T1,standard,minimum width=1cm] (TT1) {Validation};
\node[above=1.5cm of T1,standard] (T2) {Training};
\node[right=-\pgflinewidth\space of T2,standard,minimum width=1cm] (TT2){0};
\node[above=1.5cm of T2,align=center,inner
xsep=1.5em] (PE) {Fit\\ Model};
\node[yscale=1.1,parallelepiped,draw,fit=(PE),inner sep=0pt]{};
\node[right=3cm of PE,standard] (PR) {Ped ratings};
\node[below=1cm of PR,standard,rounded corners=1em] (CEM) {Evaluation \\ metrics};
\end{scope}
\begin{scope}[-latex,thick]
\draw (VS.east) -- (T1.west);
\draw (T1) -- (T2) node[midway,right]{Hide validation ratings};
\draw[shorten >=1mm] (T2) -- (PE) node[midway,right]{Feed Model};
\draw[shorten <=1mm] (PE) -- (PR);
\draw (PR) -- (CEM);
\draw[rounded corners] (TT1.east) -- ++ (2em,0) |- (CEM);
\end{scope}
\begin{scope}[nodes={text width=3.5cm,align=center}]
\node[below] at (boxes.south-|TS) {Bablabla.};
\node[below] at ([xshift=5mm]T1|-boxes.south) {Blablablba};
\node[below] at (CEM|-boxes.south) {Blablablba};
\end{scope}
\end{tikzpicture}
\end{document}
testbox to have the same size as thevalidationbox? And also draw the arrows as in theValidation ratings– NaveganTeX Sep 03 '19 at 23:24