
\begin{tikzpicture}[scale=0.6]
    \begin{axis}[
        xtick={0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9},
        xticklabels={0.01, 0.02, 0.05, 0.1, 0.2, 0.5, 1, 2, 5},
        width=6.5cm,
        height=5cm,
        y tick label style={
            /pgf/number format/.cd,
            fixed,
            fixed zerofill,
            precision=2,
            /tikz/.cd
        },
        ymin=13.8,
        ymax=14.4,
        x tick label style={rotate=45},
        legend style={font=\small},
        ylabel=\textbf{Recall@10},
        y label style={at={(0.7, 1.03)},rotate=270,anchor=south east},
        x label style={at={(1.05, -0.1)}, anchor=south east},
        xlabel=$\bm{\epsilon}$,
        ytick distance = 0.2,
        grid=major,
        grid style=dashed,
        ]
        \addplot[mark=square*,blue] 
          coordinates{
            (0.1, 13.9) 
            (0.2, 13.92) 
            (0.3, 13.92) 
            (0.4, 14.10) 
            (0.5, 14.13) 
            (0.6, 14.31) 
            (0.7, 14.35)
            (0.8, 14.37) 
            (0.9, 14.28)
        };
    \end{axis}
\end{tikzpicture}\hspace{3mm}
\begin{tikzpicture}[scale=0.6]
    \begin{axis}[
        xtick={0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9},
        xticklabels={0.01, 0.02, 0.05, 0.1, 0.2, 0.5, 1, 2, 5},
        width=6.5cm,
        height=5cm,
        y tick label style={
            /pgf/number format/.cd,
            fixed,
            fixed zerofill,
            precision=2,
            /tikz/.cd
        },
        ymin=12.4,
        ymax=13.2,
        x tick label style={rotate=45},
        legend style={font=\small},
        ylabel=\textbf{NDCG@10},
        y label style={at={(0.7, 1.03)},rotate=270,anchor=south east},
        x label style={at={(1.05, -0.1)}, anchor=south east},
        xlabel=$\bm{\epsilon}$,
        ytick distance = 0.2,
        grid=major,
        grid style=dashed,
        ]
        \addplot[mark=triangle*,red]
          coordinates{
            (0.1, 12.62) 
            (0.2, 12.58) 
            (0.3, 12.6) 
            (0.4, 12.74) 
            (0.5, 12.83) 
            (0.6, 13.05) 
            (0.7, 13.14)
            (0.8, 13.14) 
            (0.9, 13.01)
        };
    \end{axis}
\end{tikzpicture}