{"id":"https://openalex.org/W7166673611","doi":"https://doi.org/10.1145/3797076","title":"DuCodeMark: Dual-Purpose Code Dataset Watermarking via Style-Aware Watermark-Poison Design","display_name":"DuCodeMark: Dual-Purpose Code Dataset Watermarking via Style-Aware Watermark-Poison Design","publication_year":2026,"publication_date":"2026-06-30","ids":{"openalex":"https://openalex.org/W7166673611","doi":"https://doi.org/10.1145/3797076"},"language":"en","primary_location":{"id":"doi:10.1145/3797076","is_oa":true,"landing_page_url":"https://doi.org/10.1145/3797076","pdf_url":null,"source":{"id":"https://openalex.org/S4404663975","display_name":"Proceedings of the ACM on software engineering.","issn_l":"2994-970X","issn":["2994-970X"],"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/P4310319798","host_organization_name":"Association for Computing Machinery","host_organization_lineage":["https://openalex.org/P4310319798"],"host_organization_lineage_names":["Association for Computing Machinery"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the ACM on Software Engineering","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"hybrid","oa_url":"https://doi.org/10.1145/3797076","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5100663387","display_name":"Yuchen Chen","orcid":"https://orcid.org/0000-0002-3380-5564"},"institutions":[{"id":"https://openalex.org/I881766915","display_name":"Nanjing University","ror":"https://ror.org/01rxvg760","country_code":"CN","type":"education","lineage":["https://openalex.org/I881766915"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yuchen Chen","raw_affiliation_strings":["Nanjing University, Nanjing, China"],"raw_orcid":"https://orcid.org/0000-0002-3380-5564","affiliations":[{"raw_affiliation_string":"Nanjing University, Nanjing, China","institution_ids":["https://openalex.org/I881766915"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5107127727","display_name":"Yuan Xiao","orcid":"https://orcid.org/0009-0009-3166-8007"},"institutions":[{"id":"https://openalex.org/I881766915","display_name":"Nanjing University","ror":"https://ror.org/01rxvg760","country_code":"CN","type":"education","lineage":["https://openalex.org/I881766915"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yuan Xiao","raw_affiliation_strings":["Nanjing University, Nanjing, China"],"raw_orcid":"https://orcid.org/0009-0009-3166-8007","affiliations":[{"raw_affiliation_string":"Nanjing University, Nanjing, China","institution_ids":["https://openalex.org/I881766915"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5075174750","display_name":"Chunrong Fang","orcid":"https://orcid.org/0000-0002-9930-7111"},"institutions":[{"id":"https://openalex.org/I881766915","display_name":"Nanjing University","ror":"https://ror.org/01rxvg760","country_code":"CN","type":"education","lineage":["https://openalex.org/I881766915"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Chunrong Fang","raw_affiliation_strings":["Nanjing University, Nanjing, China"],"raw_orcid":"https://orcid.org/0000-0002-9930-7111","affiliations":[{"raw_affiliation_string":"Nanjing University, Nanjing, China","institution_ids":["https://openalex.org/I881766915"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100422935","display_name":"Zhenyu Chen","orcid":"https://orcid.org/0000-0002-9592-7022"},"institutions":[{"id":"https://openalex.org/I881766915","display_name":"Nanjing University","ror":"https://ror.org/01rxvg760","country_code":"CN","type":"education","lineage":["https://openalex.org/I881766915"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhenyu Chen","raw_affiliation_strings":["Nanjing University, Nanjing, China"],"raw_orcid":"https://orcid.org/0000-0002-9592-7022","affiliations":[{"raw_affiliation_string":"Nanjing University, Nanjing, China","institution_ids":["https://openalex.org/I881766915"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5100331400","display_name":"Baowen Xu","orcid":"https://orcid.org/0000-0001-7743-1296"},"institutions":[{"id":"https://openalex.org/I881766915","display_name":"Nanjing University","ror":"https://ror.org/01rxvg760","country_code":"CN","type":"education","lineage":["https://openalex.org/I881766915"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Baowen Xu","raw_affiliation_strings":["Nanjing University, Nanjing, China"],"raw_orcid":"https://orcid.org/0000-0001-7743-1296","affiliations":[{"raw_affiliation_string":"Nanjing University, Nanjing, China","institution_ids":["https://openalex.org/I881766915"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I881766915"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.69271155,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"3","issue":"FSE","first_page":"1059","last_page":"1081"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11241","display_name":"Advanced Malware Detection Techniques","score":0.8162999749183655,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11241","display_name":"Advanced Malware Detection Techniques","score":0.8162999749183655,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"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/T11689","display_name":"Adversarial Robustness in Machine Learning","score":0.0771000012755394,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"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":0.027400000020861626,"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/digital-watermarking","display_name":"Digital watermarking","score":0.8755000233650208},{"id":"https://openalex.org/keywords/watermark","display_name":"Watermark","score":0.7253000140190125},{"id":"https://openalex.org/keywords/robustness","display_name":"Robustness (evolution)","score":0.6776999831199646},{"id":"https://openalex.org/keywords/decoding-methods","display_name":"Decoding methods","score":0.6126999855041504},{"id":"https://openalex.org/keywords/source-code","display_name":"Source code","score":0.551800012588501},{"id":"https://openalex.org/keywords/code","display_name":"Code (set theory)","score":0.5325000286102295}],"concepts":[{"id":"https://openalex.org/C150817343","wikidata":"https://www.wikidata.org/wiki/Q875932","display_name":"Digital watermarking","level":3,"score":0.8755000233650208},{"id":"https://openalex.org/C164112704","wikidata":"https://www.wikidata.org/wiki/Q7974348","display_name":"Watermark","level":3,"score":0.7253000140190125},{"id":"https://openalex.org/C63479239","wikidata":"https://www.wikidata.org/wiki/Q7353546","display_name":"Robustness (evolution)","level":3,"score":0.6776999831199646},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6621999740600586},{"id":"https://openalex.org/C57273362","wikidata":"https://www.wikidata.org/wiki/Q576722","display_name":"Decoding methods","level":2,"score":0.6126999855041504},{"id":"https://openalex.org/C43126263","wikidata":"https://www.wikidata.org/wiki/Q128751","display_name":"Source code","level":2,"score":0.551800012588501},{"id":"https://openalex.org/C2776760102","wikidata":"https://www.wikidata.org/wiki/Q5139990","display_name":"Code (set theory)","level":3,"score":0.5325000286102295},{"id":"https://openalex.org/C60048249","wikidata":"https://www.wikidata.org/wiki/Q37437","display_name":"Syntax","level":2,"score":0.44369998574256897},{"id":"https://openalex.org/C41608201","wikidata":"https://www.wikidata.org/wiki/Q980509","display_name":"Embedding","level":2,"score":0.4415000081062317},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.41510000824928284},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.4034999907016754},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.3880999982357025},{"id":"https://openalex.org/C2780801425","wikidata":"https://www.wikidata.org/wiki/Q5164392","display_name":"Construct (python library)","level":2,"score":0.3828999996185303},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.3562000095844269},{"id":"https://openalex.org/C58646249","wikidata":"https://www.wikidata.org/wiki/Q127380","display_name":"Abstract syntax tree","level":3,"score":0.33629998564720154},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.32170000672340393},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.3084000051021576},{"id":"https://openalex.org/C148730421","wikidata":"https://www.wikidata.org/wiki/Q141090","display_name":"Encryption","level":2,"score":0.3034999966621399},{"id":"https://openalex.org/C141141315","wikidata":"https://www.wikidata.org/wiki/Q2379942","display_name":"Guard (computer science)","level":2,"score":0.2646999955177307}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1145/3797076","is_oa":true,"landing_page_url":"https://doi.org/10.1145/3797076","pdf_url":null,"source":{"id":"https://openalex.org/S4404663975","display_name":"Proceedings of the ACM on software engineering.","issn_l":"2994-970X","issn":["2994-970X"],"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/P4310319798","host_organization_name":"Association for Computing Machinery","host_organization_lineage":["https://openalex.org/P4310319798"],"host_organization_lineage_names":["Association for Computing Machinery"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the ACM on Software Engineering","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.1145/3797076","is_oa":true,"landing_page_url":"https://doi.org/10.1145/3797076","pdf_url":null,"source":{"id":"https://openalex.org/S4404663975","display_name":"Proceedings of the ACM on software engineering.","issn_l":"2994-970X","issn":["2994-970X"],"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/P4310319798","host_organization_name":"Association for Computing Machinery","host_organization_lineage":["https://openalex.org/P4310319798"],"host_organization_lineage_names":["Association for Computing Machinery"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the ACM on Software Engineering","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G8287377286","display_name":null,"funder_award_id":"U24A20337","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G8662163125","display_name":null,"funder_award_id":"62372228","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":31,"referenced_works":["https://openalex.org/W2062989416","https://openalex.org/W2148885851","https://openalex.org/W2950368691","https://openalex.org/W2963935794","https://openalex.org/W2999343753","https://openalex.org/W3098605233","https://openalex.org/W3114760331","https://openalex.org/W3121707215","https://openalex.org/W3210860486","https://openalex.org/W4220722393","https://openalex.org/W4225791314","https://openalex.org/W4300007223","https://openalex.org/W4315706637","https://openalex.org/W4385562549","https://openalex.org/W4386185625","https://openalex.org/W4386272920","https://openalex.org/W4386552493","https://openalex.org/W4388631682","https://openalex.org/W4391272793","https://openalex.org/W4391696889","https://openalex.org/W4391799121","https://openalex.org/W4392781018","https://openalex.org/W4394744221","https://openalex.org/W4394745382","https://openalex.org/W4400276325","https://openalex.org/W4402169037","https://openalex.org/W4402671641","https://openalex.org/W4404088852","https://openalex.org/W4404330874","https://openalex.org/W4411522857","https://openalex.org/W4411552835"],"related_works":[],"abstract_inverted_index":{"The":[0,169],"proliferation":[1],"of":[2,18,106,151],"large":[3],"language":[4],"models":[5],"for":[6,66],"code":[7,20,67,81,158],"(CodeLMs)":[8],"and":[9,40,61,75,98,165,192,198],"open-source":[10],"contributions":[11],"has":[12],"heightened":[13],"concerns":[14],"over":[15],"unauthorized":[16],"use":[17],"source":[19],"datasets.":[21],"While":[22],"watermarking":[23,64],"provides":[24],"a":[25,59,104,137,148,199],"viable":[26],"protection":[27],"mechanism":[28],"by":[29,210],"embedding":[30],"ownership":[31],"signals,":[32],"existing":[33],"methods":[34],"rely":[35],"on":[36,141],"detectable":[37],"trigger-target":[38,96],"patterns":[39],"are":[41,125],"limited":[42],"to":[43,93,109],"source-code":[44,73],"tasks,":[45,159],"overlooking":[46],"other":[47],"scenarios":[48],"such":[49],"as":[50],"decompilation":[51,76],"tasks.":[52,77],"In":[53],"this":[54],"paper,":[55],"we":[56],"propose":[57],"DuCodeMark,":[58],"stealthy":[60,95],"robust":[62],"dual-purpose":[63],"method":[65,139],"datasets":[68],"that":[69,172],"generalizes":[70],"across":[71,153],"both":[72,190],"tasks":[74],"DuCodeMark":[78,135,152],"parses":[79],"each":[80],"sample":[82],"into":[83,103],"an":[84],"abstract":[85],"syntax":[86],"tree":[87],"(AST),":[88],"applies":[89],"language-specific":[90],"style":[91],"transformations":[92],"construct":[94],"pairs,":[97],"injects":[99],"repressible":[100],"poisoned":[101],"features":[102,118],"subset":[105],"return-typed":[107],"samples":[108],"enhance":[110],"robustness":[111,188],"against":[112,189],"watermark":[113,128,191,206],"removal":[114,207],"or":[115],"evasion.":[116],"These":[117],"remain":[119],"inactive":[120],"during":[121],"normal":[122],"training":[123],"but":[124],"activated":[126],"upon":[127,205],"removal,":[129],"degrading":[130],"model":[131,203],"performance.":[132],"For":[133],"verification,":[134],"employs":[136],"black-box":[138],"based":[140],"the":[142],"independent-samples":[143],"t":[144],"-test.":[145],"We":[146],"conduct":[147],"comprehensive":[149],"evaluation":[150],"72":[154],"settings":[155],"spanning":[156],"two":[157,160],"programming":[161],"languages,":[162],"three":[163],"CodeLMs,":[164],"six":[166],"decoding":[167],"temperatures.":[168],"results":[170],"demonstrate":[171],"it":[173],"consistently":[174],"achieves":[175],"strong":[176],"verifiability":[177],"(":[178],"p":[179],"<":[180],"0.05),":[181],"high":[182],"stealthiness":[183],"(suspicion":[184],"rate":[185],"\u2264":[186,196],"0.36),":[187],"poisoning":[193],"attacks":[194],"(recall":[195],"0.57),":[197],"substantial":[200],"drop":[201],"in":[202],"performance":[204],"(Pass@1":[208],"drops":[209],"28.6":[211]},"counts_by_year":[],"updated_date":"2026-08-21T09:56:20.448147","created_date":"2026-07-01T00:00:00"}
