{"id":"https://openalex.org/W7161850881","doi":"https://doi.org/10.48550/arxiv.2605.19576","title":"Library Drift: Diagnosing and Fixing a Silent Failure Mode in Self-Evolving LLM Skill Libraries","display_name":"Library Drift: Diagnosing and Fixing a Silent Failure Mode in Self-Evolving LLM Skill Libraries","publication_year":2026,"publication_date":"2026-05-19","ids":{"openalex":"https://openalex.org/W7161850881","doi":"https://doi.org/10.48550/arxiv.2605.19576"},"language":null,"primary_location":{"id":"doi:10.48550/arxiv.2605.19576","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2605.19576","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Preprint"},"type":"preprint","indexed_in":["datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://doi.org/10.48550/arxiv.2605.19576","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5136558748","display_name":"Xing Zhang","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Zhang, Xing","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5136527114","display_name":"Yanwei Cui","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Cui, Yanwei","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5136589563","display_name":"Guanghui Wang","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Wang, Guanghui","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5136569834","display_name":"Ziyuan Li","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Li, Ziyuan","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5056837698","display_name":"Wei Qiu","orcid":"https://orcid.org/0000-0003-3348-1659"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Qiu, Wei","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5136507528","display_name":"Bing Zhu","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Zhu, Bing","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5136538604","display_name":"Peiyang He","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"He, Peiyang","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12607","display_name":"Personal Information Management and User Behavior","score":0.36880001425743103,"subfield":{"id":"https://openalex.org/subfields/1802","display_name":"Information Systems and Management"},"field":{"id":"https://openalex.org/fields/18","display_name":"Decision Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T12607","display_name":"Personal Information Management and User Behavior","score":0.36880001425743103,"subfield":{"id":"https://openalex.org/subfields/1802","display_name":"Information Systems and Management"},"field":{"id":"https://openalex.org/fields/18","display_name":"Decision Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T12127","display_name":"Software System Performance and Reliability","score":0.11150000244379044,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10260","display_name":"Software Engineering Research","score":0.09130000323057175,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/baseline","display_name":"Baseline (sea)","score":0.4878000020980835},{"id":"https://openalex.org/keywords/mode","display_name":"Mode (computer interface)","score":0.4542999863624573},{"id":"https://openalex.org/keywords/router","display_name":"Router","score":0.43320000171661377},{"id":"https://openalex.org/keywords/failure-mode-and-effects-analysis","display_name":"Failure mode and effects analysis","score":0.41429999470710754},{"id":"https://openalex.org/keywords/corporate-governance","display_name":"Corporate governance","score":0.40630000829696655},{"id":"https://openalex.org/keywords/term","display_name":"Term (time)","score":0.3644999861717224}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5716999769210815},{"id":"https://openalex.org/C12725497","wikidata":"https://www.wikidata.org/wiki/Q810247","display_name":"Baseline (sea)","level":2,"score":0.4878000020980835},{"id":"https://openalex.org/C48677424","wikidata":"https://www.wikidata.org/wiki/Q6888088","display_name":"Mode (computer interface)","level":2,"score":0.4542999863624573},{"id":"https://openalex.org/C2775896111","wikidata":"https://www.wikidata.org/wiki/Q642560","display_name":"Router","level":2,"score":0.43320000171661377},{"id":"https://openalex.org/C66283442","wikidata":"https://www.wikidata.org/wiki/Q1389268","display_name":"Failure mode and effects analysis","level":2,"score":0.41429999470710754},{"id":"https://openalex.org/C39389867","wikidata":"https://www.wikidata.org/wiki/Q380767","display_name":"Corporate governance","level":2,"score":0.40630000829696655},{"id":"https://openalex.org/C56739046","wikidata":"https://www.wikidata.org/wiki/Q192060","display_name":"Knowledge management","level":1,"score":0.36660000681877136},{"id":"https://openalex.org/C61797465","wikidata":"https://www.wikidata.org/wiki/Q1188986","display_name":"Term (time)","level":2,"score":0.3644999861717224},{"id":"https://openalex.org/C143299363","wikidata":"https://www.wikidata.org/wiki/Q900584","display_name":"Attribution","level":2,"score":0.3409000039100647},{"id":"https://openalex.org/C195094911","wikidata":"https://www.wikidata.org/wiki/Q14167904","display_name":"Process management","level":1,"score":0.3125999867916107},{"id":"https://openalex.org/C132758656","wikidata":"https://www.wikidata.org/wiki/Q5307365","display_name":"Dreyfus model of skill acquisition","level":2,"score":0.3061000108718872},{"id":"https://openalex.org/C21547014","wikidata":"https://www.wikidata.org/wiki/Q1423657","display_name":"Operations management","level":1,"score":0.30390000343322754},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.3003999888896942},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.2915000021457672},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.29109999537467957},{"id":"https://openalex.org/C200601418","wikidata":"https://www.wikidata.org/wiki/Q2193887","display_name":"Reliability engineering","level":1,"score":0.2809000015258789},{"id":"https://openalex.org/C144133560","wikidata":"https://www.wikidata.org/wiki/Q4830453","display_name":"Business","level":0,"score":0.2705000042915344},{"id":"https://openalex.org/C2777220311","wikidata":"https://www.wikidata.org/wiki/Q6423340","display_name":"Knowledge acquisition","level":2,"score":0.26989999413490295},{"id":"https://openalex.org/C69637215","wikidata":"https://www.wikidata.org/wiki/Q702362","display_name":"Default","level":2,"score":0.26660001277923584},{"id":"https://openalex.org/C110354214","wikidata":"https://www.wikidata.org/wiki/Q6314146","display_name":"Engineering management","level":1,"score":0.2651999890804291},{"id":"https://openalex.org/C49774154","wikidata":"https://www.wikidata.org/wiki/Q131765","display_name":"Multimedia","level":1,"score":0.2554999887943268},{"id":"https://openalex.org/C2777710495","wikidata":"https://www.wikidata.org/wiki/Q5527195","display_name":"Gateway (web page)","level":2,"score":0.250900000333786}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.48550/arxiv.2605.19576","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2605.19576","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":null,"raw_source_name":null,"raw_type":"Preprint"}],"best_oa_location":{"id":"doi:10.48550/arxiv.2605.19576","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2605.19576","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Preprint"},"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":[],"abstract_inverted_index":{"Self-evolving":[0],"skill":[1,13,63],"libraries":[2],"face":[3],"a":[4,54,104,107,125,129,156],"silent":[5],"failure":[6,95],"mode":[7],"we":[8],"term":[9],"\\emph{library":[10],"drift}:":[11],"unbounded":[12],"accumulation":[14],"without":[15],"outcome-driven":[16],"lifecycle":[17],"management":[18],"causes":[19],"retrieval":[20],"degradation,":[21],"false-positive":[22],"injections,":[23],"and":[24,88,102,151],"performance":[25],"stagnation.":[26],"Recent":[27],"evaluation":[28],"confirms":[29],"the":[30,44,94],"symptom":[31],"(LLM-authored":[32],"skills":[33],"deliver":[34,40],"+0.0pp":[35],"gain":[36,135],"while":[37],"human-curated":[38],"ones":[39],"+16.2pp":[41],"(SkillsBench)),":[42],"yet":[43],"underlying":[45],"mechanism":[46],"has":[47],"not":[48],"been":[49],"isolated.":[50],"We":[51],"provide":[52],"(1)":[53],"\\textbf{reproducible":[55],"trigger}:":[56],"ablations":[57,144],"that":[58,92,120],"isolate":[59],"drift:":[60],"one":[61,68],"disables":[62],"injection":[64],"(flat":[65],"floor,":[66],"+0.002),":[67],"imposes":[69],"premature":[70],"retirement":[71,112],"(active":[72],"harm,":[73],"$-$0.019);":[74],"(2)":[75],"\\textbf{trace-level":[76],"diagnostics}:":[77],"an":[78],"append-only":[79],"evidence":[80],"log":[81],"with":[82],"per-skill":[83],"contribution":[84],"scores,":[85],"attribution":[86],"verdicts,":[87],"router":[89],"engagement":[90],"metrics":[91],"make":[93],"visible":[96],"before":[97],"it":[98],"reaches":[99],"end-task":[100],"scores;":[101],"(3)":[103],"\\textbf{verified":[105],"fix}:":[106],"minimal":[108],"governance":[109,147],"recipe":[110],"(outcome-driven":[111],"+":[113,116],"bounded":[114],"active-cap":[115],"meta-skill":[117],"authoring":[118],"prior)":[119],"lifts":[121],"held-out":[122],"pass@1":[123],"from":[124],"0.258":[126],"baseline":[127],"to":[128],"late-window":[130],"mean":[131],"of":[132],"0.584":[133],"(rolling":[134],"$+$0.328)":[136],"on":[137],"MBPP+":[138],"hard-100":[139],"over":[140],"100":[141],"rounds.":[142],"Eight":[143],"decompose":[145],"which":[146,152],"mechanisms":[148],"are":[149,153],"load-bearing":[150],"subsumed,":[154],"providing":[155],"concrete":[157],"playbook":[158],"for":[159],"diagnosing":[160],"library":[161],"drift":[162],"in":[163],"any":[164],"self-evolving":[165],"agent.":[166]},"counts_by_year":[],"updated_date":"2026-07-01T06:00:48.157686","created_date":"2026-05-21T00:00:00"}