| Methods | ROUGE-1 | ROUGE-2 | ROUGE-SU4 | Median | 95% CI | Stdr. | Median | 95% CI | Stdr. | Median | 95% CI | Stdr. |
| pSum-SaDE | 0.4422 | [0.4417, 0.4426] | 2.2 – 4 | 0.0992 | [0.0990, 0.0994] | 7.8 − 5 | 0.1596 | [0.1591, 0.1598] | 1.7 − 4 | pSum-DE | 0.4387 | [0.4383, 0.4394] | 2.5 – 4 | 0.0974 | [0.0971, 0.0976] | 1.1 − 4 | 0.1570 | [0.1564, 0.1575] | 2.6 − 4 | LEX | 0.4040 | [0.4022, 0.4057] | 8.3 – 4 | 0.0915 | [0.0910, 0.0919] | 2.3 − 4 | 0.1457 | [0.1448, 0.1465] | 4.1 − 4 | TMR + TF | 0.4059 | [0.4048, 0.4067] | 4.4 – 4 | 0.0921 | [0.0911, 0.0922] | 2.7 − 4 | 0.1515 | [0.1508, 0.1520] | 3.0 − 4 | HybHSum | 0.4306 | [0.4299, 0.4310] | 2.6 – 4 | 0.0916 | [0.0908, 0.0916] | 2.1 − 4 | 0.1514 | [0.1508, 0.1518] | 2.6 − 4 | PLSA-JS | 0.4330 | [0.4327, 0.4341] | 3.2 – 4 | 0.0975 | [0.0970, 0.0981] | 2.6 − 4 | 0.1557 | [0.1549, 0.1565] | 4.0 − 4 | iRANK | 0.4019 | [0.4014, 0.4046] | 7.8 – 4 | 0.0915 | [0.0912, 0.0920] | 2.0 − 4 | 0.1447 | [0.1446, 0.1458] | 2.9 − 4 | HierSum | 0.4016 | [0.4006, 0.4023] | 4.2 – 4 | 0.0889 | [0.0877, 0.0894] | 4.1 − 4 | 0.1441 | [0.1427, 0.1442] | 3.5 − 4 | SVR | 0.4024 | [0.4008, 0.4030] | 5.1 – 4 | 0.0922 | [0.0915, 0.0941] | 6.1 − 4 | 0.1491 | [0.1483, 0.1497] | 3.4 − 4 |
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