作者位次 #4/8ACL 2026Poster· Natural Language Processing
Semantic Hardness Is Not Visual Hardness: Sign-Aware Hard Negative Mining for Sign Language Retrieval
Junmyeong Lee · Chan Hur · ChangSu Choi · Sukmin Cho · Fitsum Gaim · Eui Jun Hwang · Hoyun Song · KyungTae Lim
摘要
Sign Language Retrieval (SLRet) enables efficient access to sign language content but remains fragile in fine-grained scenarios where visually similar signs must be distinguished. We show that this limitation does not stem from model capacity, but from ineffective hard negative supervision. Speci...