This model is to reproduce a variant of TCT-ColBERT-V2 dense retrieval models described in the following paper:
Specifically, this checkpoint is finetuned for MS MARCO-V2 passage ranking, and we use this checkpoint as our ``trained'' model for TREC DL 2021 submissions.
The initial checkpoint is from a previous one
tct_colbert-v2-hnp-msmarco trained on
MS MARCO.
For fine-tuning, we construct our training data for MS MARCO-V2 passage ranking using this
script.
