Using the reported parameters, the score is still quite far from the reported one.

{‘rouge-1’: {‘f’: 0.3857450692467576,
‘p’: 0.3623898533303822,
‘r’: 0.4360411721146263},
‘rouge-2’: {‘f’: 0.17910119007512806,
‘p’: 0.168426671688575,
‘r’: 0.20252494493851977},
‘rouge-l’: {‘f’: 0.3742737179767776,
‘p’: 0.3537086320034924,
‘r’: 0.4147416244432235}}