32.1
38.6
39.3

Inﬁx-tuning: INFIX-{PreﬁxLength}

45.8
45.8
45.8

8.63
8.48
8.47

67.9
67.2
66.7

INFIX-1
2.42
INFIX-10
2.40
INFIX-20
2.42
Table 5: Intrinsic evaluation of Embedding-only (§7.2)
and Inﬁxing (§7.3). Both Embedding-only ablation and
Inﬁx-tuning underperforms full preﬁx-tuning.

69.4
69.9
70.0
Prefix-Tuning