{"about":{"site":"https://codewithpapers.app","non_affiliation":"Code with Papers and Syntology are not affiliated with, endorsed by, or sponsored by Papers with Code, Meta, or the pwc-archive mirror.","licence":"CC BY-SA 4.0","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","attribution":"https://codewithpapers.app/attribution","modified":"archive material modified by Syntology; see the attribution page"},"url":"/paper/precise-localization-of-memories-a-fine","title":"Precise Localization of Memories: A Fine-grained Neuron-level Knowledge Editing Technique for LLMs","arxiv_id":"2503.01090","date":"2025-03-03","proceeding":null,"authors":["Haowen Pan","Xiaozhi Wang","Yixin Cao","Zenglin Shi","Xun Yang","Juanzi Li","Meng Wang"],"abstract":"Knowledge editing aims to update outdated information in Large Language Models (LLMs). A representative line of study is locate-then-edit methods, which typically employ causal tracing to identify the modules responsible for recalling factual knowledge about entities. However, we find these methods are often sensitive only to changes in the subject entity, leaving them less effective at adapting to changes in relations. This limitation results in poor editing locality, which can lead to the persistence of irrelevant or inaccurate facts, ultimately compromising the reliability of LLMs. We believe this issue arises from the insufficient precision of knowledge localization. To address this, we propose a Fine-grained Neuron-level Knowledge Editing (FiNE) method that enhances editing locality without affecting overall success rates. By precisely identifying and modifying specific neurons within feed-forward networks, FiNE significantly improves knowledge localization and editing. Quantitative experiments demonstrate that FiNE efficiently achieves better overall performance compared to existing techniques, providing new insights into the localization and modification of knowledge within LLMs.","url_abs":"https://arxiv.org/abs/2503.01090v1","url_pdf":"https://arxiv.org/pdf/2503.01090v1.pdf","source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","row_kind":"abstracts"},"code_links":[{"paper_slug":"precise-localization-of-memories-a-fine","repo_url":"https://github.com/opanhw/FiNE","is_official":1,"mentioned_in_paper":1,"mentioned_in_github":1,"framework":"pytorch","reach":null}],"tasks":[{"task_slug":"knowledge-editing","task_name":"knowledge editing"}],"methods":[],"datasets_introduced":[],"methods_introduced":[],"results":[],"syntology":{"syntology_url":null,"atlas_url":"https://app.syntology.ai/?focus=2503.01090","mcp":{"get_harvested_code_for_paper":{"arxiv_id":"2503.01090"}},"developers":"https://syntology.ai/developers","read_at":"2026-09-24T18:15:14+00:00","read_at_is":"when the build read Syntology's graph, not when any sample ran","claim":"Per-sample execution status on synthesized fixtures; not a correctness claim about the paper. Samples come from repositories linked to the paper, official or community; repo_kind says which.","repos":[{"provenance":"external:paperswithcode_snapshot_2025-07-28","url":"https://github.com/opanhw/FiNE","reach":null}],"summary":{"ran":2,"ran_fixture":1,"unverified":2},"by_repo_kind":{"official":{"samples":5,"ran":3,"repositories":1}},"repo_kind_vocabulary":{"official":"The archive marks this repository official for the paper","named_in_paper":"The archive records that the paper mentions this repository; it is not marked official","listed":"In the archive's code links for this paper, not marked official and not recorded as mentioned in the paper","found_in_text":"Syntology found this repository in the paper's own text; whether it is the authors' implementation is not asserted","community":"Not in the archive's code links for this paper; a community repository Syntology harvested"},"n_pointer_only_for_licence":0,"samples":[{"code_sha256_prefix":"4225eb94680e8f2a","entry":"FINEHyperParams","repo":"opanhw/FiNE","repo_kind":"official","path":"easyeditor/models/fine/fine_main.py","file_url":"https://github.com/opanhw/FiNE/blob/HEAD/easyeditor/models/fine/fine_main.py","link_basis":"first_harvest_node","language":"python","status":"ran","verification_level":1,"contract_check":null,"metamorphic_tier":"deterministic","behaviour_fingerprint":false,"licence":"MIT","inline_ok":true,"mcp_get_code":{"code_sha256":"4225eb94680e8f2a"}},{"code_sha256_prefix":"48c88b47f9f2750d","entry":"get_context_templates","repo":"opanhw/fine","repo_kind":"official","path":"easyeditor/models/fine/fine_main.py","file_url":"https://github.com/opanhw/fine/blob/HEAD/easyeditor/models/fine/fine_main.py","link_basis":"first_harvest_node","language":"python","status":"ran_fixture","verification_level":1,"contract_check":"RAISES","metamorphic_tier":null,"behaviour_fingerprint":false,"licence":"MIT","inline_ok":true,"mcp_get_code":{"code_sha256":"48c88b47f9f2750d"}},{"code_sha256_prefix":"f8f12ef4c401c60f","entry":"get_top_neurons","repo":"opanhw/FiNE","repo_kind":"official","path":"easyeditor/models/fine/fine_main.py","file_url":"https://github.com/opanhw/FiNE/blob/HEAD/easyeditor/models/fine/fine_main.py","link_basis":"first_harvest_node","language":"python","status":"ran","verification_level":1,"contract_check":null,"metamorphic_tier":null,"behaviour_fingerprint":false,"licence":"MIT","inline_ok":true,"mcp_get_code":{"code_sha256":"f8f12ef4c401c60f"}},{"code_sha256_prefix":"b64cb99946e745b7","entry":"HyperParams","repo":"opanhw/FiNE","repo_kind":"official","path":"easyeditor/models/fine/fine_main.py","file_url":"https://github.com/opanhw/FiNE/blob/HEAD/easyeditor/models/fine/fine_main.py","link_basis":"first_harvest_node","language":"python","status":"unverified","verification_level":0,"contract_check":null,"metamorphic_tier":null,"behaviour_fingerprint":false,"licence":"MIT","inline_ok":true,"mcp_get_code":{"code_sha256":"b64cb99946e745b7"}},{"code_sha256_prefix":"dc93c99587c6421c","entry":"execute_fine","repo":"opanhw/FiNE","repo_kind":"official","path":"easyeditor/models/fine/fine_main.py","file_url":"https://github.com/opanhw/FiNE/blob/HEAD/easyeditor/models/fine/fine_main.py","link_basis":"first_harvest_node","language":"python","status":"unverified","verification_level":0,"contract_check":null,"metamorphic_tier":null,"behaviour_fingerprint":false,"licence":"MIT","inline_ok":true,"mcp_get_code":{"code_sha256":"dc93c99587c6421c"}}]},"arxiv_metadata":null,"syntology_extracted_results":null}