作者位次 #2/5SIGIR 2026Poster· Information Retrieval (Short)
One-Pass Decoding for Generative Recommendation with WFST-Constrained A* Search
Puji Wang · Yingchen Zhang · Ruqing Zhang · Jiafeng Guo · Xueqi Cheng
摘要
Generative recommendation (GR) represents items as discrete semantic identifiers (SIDs) and performs next-item prediction via identifier sequence generation. Most existing methods perform prefix-constrained decoding over a trie, where hard structural constraints lead to locally greedy decisions....