0\]  ![Boxplots of $L_{\mathrm{par}}$ in (\[Lpar\]) for the dataset tilting the concentration parameter: The compared methods are the maximum entropy approach (ME), the non-regularized estimator (NR), the proposed methods (R0; R00; R000), and its version with cross-validation (RCV). The results with different values of the concentration parameter $c^{\ast}$ are shown in (A)-(C).[]{data-label="synGP"}](synG_00P00.pdf){width="00mm"}  \[p00\]  ![Boxplots of $L_{\mathrm{par}}$ in (\[Lpar\]) for the dataset tilting the concentration parameter: The compared methods are the maximum entropy approach (ME), the non-regularized estimator (NR), the proposed methods (R0; R00; R000), and its version with cross-validation (RCV). The results with different values of the concentration parameter $c^{\ast}$ are shown in (A)-(C).[]{data-label="synGP"}](synG_00P00.pdf){width="00mm"}  \[p00\]  ![Boxplots of $L_{\mathrm{comp}}$ in (\[Lcomp\]) for the dataset tilting the concentration parameter: The compared methods are the maximum entropy approach (ME), the non-regularized estimator (NR), the proposed methods (R0; R00; R000), and its version with cross-validation (RCV). The results with different values of the concentration parameter $c^{\ast}$ are shown in (A)-(C).[]{data-label="synGC"}](synG_00C0.pdf){width="00mm"}  \[fig:one\]  ![Boxplots of $L_{\mathrm{comp}}$ in (\[Lcomp\]) for the dataset tilting the concentration parameter: The compared methods are the maximum entropy approach (ME), the non-regularized estimator (NR), the proposed methods (R0; R00; R000), and its version with cross-validation (RCV). The results with different values of the concentration parameter $c^{\ast}$ are shown in (A)-(C).[]{data-label="synGC"}](synG_00C00.pdf){width="00mm"}  \[fig:one\]  ![Boxplots of $L_{\mathrm{comp}}$ in (\[Lcomp\]) for the dataset tilting the concentration parameter: The compared methods are the maximum entropy approach (ME), the non-regularized estimator (NR), the proposed methods (R0; R00; R000), and its version with cross-validation (RCV). The results with different values of the concentration parameter $c^{\ast}$ are shown in (A)-(C).[]{data-label="synGC"}](synG_00C00.pdf){width="00mm"}  \[fig:one\]  