begin{figure}[H]
    begin{subfigure}{.6textwidth}
    begin{tikzpicture}
    begin{axis}[ line width=1,/pgf/number format/.cd,
    use period,
       grid=major, % Display a grid
       tick label style={font=bfserieslarge},
       label style={font=bfseriesLarge},
    grid style={gray!30},
    xlabel={Epochs},
    ylabel={rmse}]
    addplot[color=red,smooth] table[x expr=coordindex,y index=0] {
        1.1257
        0.992
        0.9681
        0.9579
        0.9521
        0.9485
        0.9457
        0.9445
        0.9432
        0.9424
        0.9413
        0.9409
        0.9409
        0.9408
        0.9402
        0.9397
        0.94
        0.9397
        0.9397
        0.9392
        0.9397
        0.9395
        0.9393
        0.9398
        0.9389
        0.9394
        0.9393
        0.9396
        0.9394
        0.9393
        0.9392
        0.939
        0.9389
        0.9394
        0.9393
        0.9385
        0.939
        0.9393
        0.9392
        0.9395
        0.9392
        0.9396
        0.9394
        0.9391
        0.9397
        0.9393
        0.9391
        0.9397
        0.9392
        0.9393
    };
    addlegendentry{Validation Error}
    addplot[color=blue,smooth] table[x expr=coordindex,y index=0] {
        1.1257
        0.9836
        0.9558
        0.9431
        0.9359
        0.931
        0.9277
        0.9252
        0.9233
        0.9219
        0.9205
        0.9197
        0.9189
        0.9182
        0.9177
        0.9172
        0.9168
        0.9165
        0.9162
        0.9159
        0.9157
        0.9155
        0.9153
        0.9152
        0.915
        0.9149
        0.9147
        0.9146
        0.9145
        0.9143
        0.9143
        0.9142
        0.9141
        0.914
        0.914
        0.914
        0.9139
        0.9138
        0.9137
        0.9137
        0.9136
        0.9136
        0.9136
        0.9136
        0.9135
        0.9134
        0.9134
        0.9134
        0.9133
        0.9132
    };
    addlegendentry{Train Error}
        end{axis}
    end{tikzpicture}
    caption{RMSE  Movielens 100K}
    label{fig:sub11}
end{subfigure}%
begin{subfigure}{.5textwidth}
    centering


    begin{tikzpicture}
    begin{axis}[line width=1,
    grid=major, % Display a grid
    grid style={gray!30},
     tick label style={font=bfserieslarge},
    label style={font=bfseriesLarge},
    xlabel={textbf{Epochs}},
    ylabel={textbf{rmse}}]
    addplot[color=red,smooth] table[x expr=coordindex,y index=0] {
        1.1171
        0.9495
        0.9254
        0.9157
        0.9105
        0.9073
        0.9052
        0.9037
        0.9026
        0.9019
        0.9012
        0.9008
        0.9005
        0.9
        0.8997
        0.8996
        0.8994
        0.8991
        0.899
        0.8989
        0.8988
        0.8988
        0.8987
        0.8987
        0.8985
        0.8985
        0.8984
        0.8984
        0.8983
        0.8983
        0.8983
        0.8983
        0.8982
        0.8982
        0.8981
        0.8982
        0.8981
        0.8981
        0.8981
        0.8981
        0.8981
        0.898
        0.898
        0.898
        0.898
        0.898
        0.898
        0.898
        0.898
        0.8981
    };
    addlegendentry{Validation Error}
    addplot[color=blue,smooth] table[x expr=coordindex,y index=0] {
        1.1171
        0.953
        0.9303
        0.9217
        0.9171
        0.9144
        0.9126
        0.9114
        0.9105
        0.91
        0.9095
        0.9092
        0.9091
        0.9088
        0.9085
        0.9085
        0.9084
        0.9082
        0.9081
        0.9081
        0.9081
        0.9081
        0.9081
        0.908
        0.9079
        0.9079
        0.9079
        0.908
        0.9079
        0.9078
        0.908
        0.9079
        0.9078
        0.9078
        0.9078
        0.9079
        0.9079
        0.9078
        0.9079
        0.9079
        0.9078
        0.9079
        0.9078
        0.9080
        0.9079
        0.9078
        0.9079
        0.9079
        0.9079
        0.9080
    };
    addlegendentry{Train Error}
    end{axis}
    end{tikzpicture}
    caption{RMSE  Movielens 1M}
    label{fig:sub22}
end{subfigure}
caption{.}
label{}


end{figure}