)(defbichi{boldsymbol{chi}})(defbipsy{boldsymbol{psy}})(defbiomega{boldsymbol{omega}})(defbupalpha{bf{alpha}})(defbupbeta{bf{beta}})(defbupgamma{bf{gamma}})(defbupdelta{bf{delta}})(defbupvarepsilon{bf{varepsilon}})(defbupzeta{bf{zeta}})(defbupeta{bf{eta}})(defbuptheta{bf{theta}})(defbupiota{bf{iota}})(defbupkappa{bf{kappa}})(defbuplambda{bf{lambda}})(defbupmu{bf{mu}})(defbupnu{bf{nu}})(defbupxi{bf{xi}})(defbupomicron{bf{micron}})(defbuppi{bf{pi}})(defbuprho{bf{rho}})(defbupsigma{bf{sigma}})(defbuptau{bf{tau}})(defbupupsilon{bf{upsilon}})(defbupphi{bf{phi}})(defbupchi{bf{chi}})(defbuppsy{bf{psy}})(defbupomega{bf{omega}})(defbGamma{bf{Gamma}})(defbDelta{bf{Delta}})(defbTheta{bf{Theta}})(defbLambda{bf{Lambda}})(defbXi{bf{Xi}})(defbPi{bf{Pi}})(defbSigma{bf{Sigma}})(defbPhi{bf{Phi}})(defbPsi{bf{Psi}})(defbOmega{bf{Omega}})begin{equation}orde{r_t} = {beta _1}orde{r_{t – 1}} + {beta _2}orde{r_{t – 2}} + {beta _3}receiv{e_{t – 1}} + {beta _4}vouche{r_{t – 1}} + {varepsilon _0}end{equation}begin{equation}receiv{e_t} = {gamma _1}receiv{e_{t – 1}} + {gamma _2}receiv{e_{t – 2}} + {gamma _3}orde{r_{t – 1}} + {gamma _4}vouche{r_{t – 1}} + {varepsilon _r}end{equation}begin{equation}vouche{r_t} = {delta _1}vouche{r_{t – 1}} + {delta _2}vouche{r_{t – 2}} + {delta _3}orde{r_{t – 1}} + {delta _4}receiv{e_{t – 1}} + {varepsilon _v}end{equation}The artificial transactions were created and stored in the four databases. The number of simulated suppliers is 100

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• )(defbichi{boldsymbol{chi}})(defbipsy{boldsymbol{psy}})(defbiomega{boldsymbol{omega}})(defbupalpha{bf{alpha}})(defbupbeta{bf{beta}})(defbupgamma{bf{gamma}})(defbupdelta{bf{delta}})(defbupvarepsilon{bf{varepsilon}})(defbupzeta{bf{zeta}})(defbupeta{bf{eta}})(defbuptheta{bf{theta}})(defbupiota{bf{iota}})(defbupkappa{bf{kappa}})(defbuplambda{bf{lambda}})(defbupmu{bf{mu}})(defbupnu{bf{nu}})(defbupxi{bf{xi}})(defbupomicron{bf{micron}})(defbuppi{bf{pi}})(defbuprho{bf{rho}})(defbupsigma{bf{sigma}})(defbuptau{bf{tau}})(defbupupsilon{bf{upsilon}})(defbupphi{bf{phi}})(defbupchi{bf{chi}})(defbuppsy{bf{psy}})(defbupomega{bf{omega}})(defbGamma{bf{Gamma}})(defbDelta{bf{Delta}})(defbTheta{bf{Theta}})(defbLambda{bf{Lambda}})(defbXi{bf{Xi}})(defbPi{bf{Pi}})(defbSigma{bf{Sigma}})(defbPhi{bf{Phi}})(defbPsi{bf{Psi}})(defbOmega{bf{Omega}})begin{equation}orde{r_t} = {beta _1}orde{r_{t – 1}} + {beta _2}orde{r_{t – 2}} + {beta _3}receiv{e_{t – 1}} + {beta _4}vouche{r_{t – 1}} + {varepsilon _0}end{equation}begin{equation}receiv{e_t} = {gamma _1}receiv{e_{t – 1}} + {gamma _2}receiv{e_{t – 2}} + {gamma _3}orde{r_{t – 1}} + {gamma _4}vouche{r_{t – 1}} + {varepsilon _r}end{equation}begin{equation}vouche{r_t} = {delta _1}vouche{r_{t – 1}} + {delta _2}vouche{r_{t – 2}} + {delta _3}orde{r_{t – 1}} + {delta _4}receiv{e_{t – 1}} + {varepsilon _v}end{equation}The artificial transactions were created and stored in the four databases. The number of simulated suppliers is 100