PLAID: An Efficient Engine for Late Interaction Retrieval. (arXiv:2205.09707v1 [cs.IR])

Pre-trained language models are increasingly important components across
multiple information retrieval (IR) paradigms. Late interaction, introduced
with the ColBERT model and recently refined in ColBERTv2, is a popular paradigm
that holds state-of-the-art status across many benchmarks. To dramatically
speed up the search latency of late interaction, we introduce the
Performance-optimized Late Interaction Driver (PLAID). Without impacting
quality, PLAID swiftly eliminates low-scoring passages using a novel centroid
interaction mechanism that treats every passage as a lightweight bag of
centroids. PLAID uses …

arxiv plaid retrieval