Auto71%Harbor: pendingMultilingualKnowledge & Reasoning

Cross-Lingual Unlearning Tensor

CROSS-LINGUAL UNLEARNING TENSOR

A multilingual unlearning benchmark spanning 174 language-script pairs and 25 paraphrase types to study cross-lingual knowledge erasure.

How to run

ltb · cross-lingual-unlearning-tensor
$ npm i -g lettokenburn-cli
$ ltb bench info cross-lingual-unlearning-tensor

External harness. No Harbor adapter has been generated for this benchmark yet. `ltb bench info` prints the known links.

Runs happen on your machine with your own subscription; only the score summary is pushed. CLI docs

Scores

8 sourced entries
HarnessSourceConfidenceLink
GPT-5.4-nano84.9N/AIndependentmediumSep 30, 2026arxiv.org
GPT-4o87.1N/AIndependentmediumSep 30, 2026arxiv.org
GPT-5-mini87.2N/AIndependentmediumSep 30, 2026arxiv.org
GPT-5.188.0N/AIndependentmediumSep 30, 2026arxiv.org
GPT-4.188.3N/AIndependentmediumSep 30, 2026arxiv.org
DeepSeek-V388.9N/AIndependentmediumSep 30, 2026arxiv.org
GPT-594.4N/AIndependentmediumSep 30, 2026arxiv.org
GPT-5.2-chat94.8N/AIndependentmediumSep 30, 2026arxiv.org

Every number links to where it was published. Low-confidence rows are muted and need per-cell verification.

Reproduced by the community

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About

Content & Construction: The dataset spans 174 language–script pairs across high, medium, and low-resource tiers. It includes forget samples re-expressed through 25 atomic paraphrase types in seven meta-categories, with translations into 40 languages. Models are fine-tuned on synthetic tasks (TOFU) and real-world news documents from the LORELEI corpus.

Scoring & Key Findings: The benchmark evaluates unlearning via oracle normalized residual access across different query-answer routes (native vs cross-lingual). It introduces COVER, a method for selecting source languages to maximize coverage of held-out languages. Results show that naive selection fails compared to COVER, which reduces mean held-out residual access by 7.8–27.3%.