Verify generalization of jaROTE to unseen data

Determine whether jaROTE generalizes reliably to unseen Japanese news data, given that the Nikkei corpus was used for temporal-expression analysis and rule design and additional false-positive suppression rules were developed on the Livedoor corpus.

Background

jaROTE was evaluated on Nikkei and Livedoor news corpora, but both datasets influenced system development: the Nikkei corpus supported temporal-expression analysis and rule design, while additional suppression rules were added during Livedoor development. Consequently, the reported results do not establish performance on genuinely unseen data. The unresolved issue is whether the pipeline’s extraction and normalization accuracy will transfer beyond the development-influenced corpora.

References

The Nikkei corpus was used for both temporal-expression analysis and rule design, and additional false-positive suppression rules were added during development on the Livedoor corpus. Consequently, generalization to unseen data remains unverified.

— Reproducing Omitted Temporal Expressions in Japanese News for Retrieval-Augmented Applications  (2609.09569 - Yasuda et al., 9 Sep 2026) in Limitations, subsection “Evaluation coverage and generalization”