Removing either lexical BM25 or dense embedding retrieval lowers every reported benchmark score relative to full JAM, supporting complementary contributions from the two retrieval channels.

Removing either lexical BM25 or dense embedding retrieval lowers every reported benchmark score relative to full JAM, supporting complementary contributions from the two retrieval channels. · CiteArk

Measurement results

0/8 assessed

0 supported0 disputed or conflicting8 not assessed

The complete result group stays with its claim. Assessed rows come first; their judgments do not replace the whole-claim conclusion. Expand a row for conditions, sources, and evidence history.

Each row is a measurement with its reported value, latest available observation, and cumulative evidence state.
Metric and conditions	Reported	Latest observation	Evidence judgment
variant: w/o BM25 · category: overall · benchmark: locomo	45.9 F1 points (0–100)	—	Not assessed
variant: w/o BM25 · category: overall · benchmark: longmemeval	62.4%	—	Not assessed
variant: w/o BM25 · category: overall · benchmark: narrativeqa	38.88 F1 points (0–100)	—	Not assessed
variant: w/o BM25 · category: overall · benchmark: hotpotqa	52.14 F1 points (0–100)	—	Not assessed
variant: w/o Embedding · category: overall · benchmark: locomo	50.86 F1 points (0–100)	—	Not assessed
variant: w/o Embedding · category: overall · benchmark: longmemeval	61.8%	—	Not assessed
variant: w/o Embedding · category: overall · benchmark: narrativeqa	39.45 F1 points (0–100)	—	Not assessed
variant: w/o Embedding · category: overall · benchmark: hotpotqa	58.13 F1 points (0–100)	—	Not assessed

Removing either lexical BM25 or dense embedding retrieval lowers every reported benchmark score relative to full JAM, supporting complementary contributions from the two retrieval channels.

Reported and observed measurements

Assessments (0)

Runs (0)

Measurement results