{"id":"https://openalex.org/W7128594199","doi":"https://doi.org/10.1140/epjds/s13688-026-00629-2","title":"Dynamics of algorithmic content amplification on TikTok","display_name":"Dynamics of algorithmic content amplification on TikTok","publication_year":2026,"publication_date":"2026-02-11","ids":{"openalex":"https://openalex.org/W7128594199","doi":"https://doi.org/10.1140/epjds/s13688-026-00629-2"},"language":"en","primary_location":{"id":"doi:10.1140/epjds/s13688-026-00629-2","is_oa":true,"landing_page_url":"https://doi.org/10.1140/epjds/s13688-026-00629-2","pdf_url":null,"source":{"id":"https://openalex.org/S2504380752","display_name":"EPJ Data Science","issn_l":"2193-1127","issn":["2193-1127"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310319965","host_organization_name":"Springer Nature","host_organization_lineage":["https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Nature"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"EPJ Data Science","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://doi.org/10.1140/epjds/s13688-026-00629-2","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5046927655","display_name":"Fabian Baumann","orcid":"https://orcid.org/0009-0001-3562-9728"},"institutions":[{"id":"https://openalex.org/I4210120221","display_name":"Max Planck Institute for Human Development","ror":"https://ror.org/02pp7px91","country_code":"DE","type":"facility","lineage":["https://openalex.org/I149899117","https://openalex.org/I4210120221"]},{"id":"https://openalex.org/I79576946","display_name":"University of Pennsylvania","ror":"https://ror.org/00b30xv10","country_code":"US","type":"education","lineage":["https://openalex.org/I79576946"]}],"countries":["DE","US"],"is_corresponding":true,"raw_author_name":"Fabian Baumann","raw_affiliation_strings":["Center for Humans and Machines, Max Planck Institute for Human Development, Berlin, Germany","Department of Biology, University of Pennsylvania, Philadelphia, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Center for Humans and Machines, Max Planck Institute for Human Development, Berlin, Germany","institution_ids":["https://openalex.org/I4210120221"]},{"raw_affiliation_string":"Department of Biology, University of Pennsylvania, Philadelphia, USA","institution_ids":["https://openalex.org/I79576946"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5125607261","display_name":"Nipun Arora","orcid":null},"institutions":[{"id":"https://openalex.org/I4210120221","display_name":"Max Planck Institute for Human Development","ror":"https://ror.org/02pp7px91","country_code":"DE","type":"facility","lineage":["https://openalex.org/I149899117","https://openalex.org/I4210120221"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Nipun Arora","raw_affiliation_strings":["Center for Humans and Machines, Max Planck Institute for Human Development, Berlin, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Center for Humans and Machines, Max Planck Institute for Human Development, Berlin, Germany","institution_ids":["https://openalex.org/I4210120221"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5121685469","display_name":"Iyad Rahwan","orcid":null},"institutions":[{"id":"https://openalex.org/I4210120221","display_name":"Max Planck Institute for Human Development","ror":"https://ror.org/02pp7px91","country_code":"DE","type":"facility","lineage":["https://openalex.org/I149899117","https://openalex.org/I4210120221"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Iyad Rahwan","raw_affiliation_strings":["Center for Humans and Machines, Max Planck Institute for Human Development, Berlin, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Center for Humans and Machines, Max Planck Institute for Human Development, Berlin, Germany","institution_ids":["https://openalex.org/I4210120221"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5086011172","display_name":"Agnieszka Czaplicka","orcid":"https://orcid.org/0000-0001-7248-7557"},"institutions":[{"id":"https://openalex.org/I4210120221","display_name":"Max Planck Institute for Human Development","ror":"https://ror.org/02pp7px91","country_code":"DE","type":"facility","lineage":["https://openalex.org/I149899117","https://openalex.org/I4210120221"]},{"id":"https://openalex.org/I686019","display_name":"AGH University of Krakow","ror":"https://ror.org/00bas1c41","country_code":"PL","type":"education","lineage":["https://openalex.org/I686019"]}],"countries":["DE","PL"],"is_corresponding":true,"raw_author_name":"Agnieszka Czaplicka","raw_affiliation_strings":["Center for Humans and Machines, Max Planck Institute for Human Development, Berlin, Germany","Department of Computational Social Science, Faculty of Management, Wroc\u0142aw University of Science and Technology, Wroc\u0142aw, Poland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Center for Humans and Machines, Max Planck Institute for Human Development, Berlin, Germany","institution_ids":["https://openalex.org/I4210120221"]},{"raw_affiliation_string":"Department of Computational Social Science, Faculty of Management, Wroc\u0142aw University of Science and Technology, Wroc\u0142aw, Poland","institution_ids":["https://openalex.org/I686019"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5046927655","https://openalex.org/A5086011172"],"corresponding_institution_ids":["https://openalex.org/I4210120221","https://openalex.org/I686019","https://openalex.org/I79576946"],"apc_list":{"value":1690,"currency":"USD","value_usd":1690},"apc_paid":{"value":1690,"currency":"USD","value_usd":1690},"fwci":186.8295,"has_fulltext":false,"cited_by_count":9,"citation_normalized_percentile":{"value":0.99976389,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":99,"max":100},"biblio":{"volume":"15","issue":"1","first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11147","display_name":"Misinformation and Its Impacts","score":0.3158999979496002,"subfield":{"id":"https://openalex.org/subfields/3312","display_name":"Sociology and Political Science"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T11147","display_name":"Misinformation and Its Impacts","score":0.3158999979496002,"subfield":{"id":"https://openalex.org/subfields/3312","display_name":"Sociology and Political Science"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T14114","display_name":"Digital Media and Philosophy","score":0.06750000268220901,"subfield":{"id":"https://openalex.org/subfields/1706","display_name":"Computer Science Applications"},"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/T11995","display_name":"FinTech, Crowdfunding, Digital Finance","score":0.06639999896287918,"subfield":{"id":"https://openalex.org/subfields/1404","display_name":"Management Information Systems"},"field":{"id":"https://openalex.org/fields/14","display_name":"Business, Management and Accounting"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/content","display_name":"Content (measure theory)","score":0.7609999775886536},{"id":"https://openalex.org/keywords/dynamics","display_name":"Dynamics (music)","score":0.5965999960899353},{"id":"https://openalex.org/keywords/markov-chain","display_name":"Markov chain","score":0.5641999840736389},{"id":"https://openalex.org/keywords/personalization","display_name":"Personalization","score":0.5288000106811523},{"id":"https://openalex.org/keywords/digital-content","display_name":"Digital content","score":0.5248000025749207},{"id":"https://openalex.org/keywords/diversity","display_name":"Diversity (politics)","score":0.4982999861240387},{"id":"https://openalex.org/keywords/markov-process","display_name":"Markov process","score":0.39399999380111694}],"concepts":[{"id":"https://openalex.org/C2778152352","wikidata":"https://www.wikidata.org/wiki/Q5165061","display_name":"Content (measure theory)","level":2,"score":0.7609999775886536},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5968000292778015},{"id":"https://openalex.org/C145912823","wikidata":"https://www.wikidata.org/wiki/Q113558","display_name":"Dynamics (music)","level":2,"score":0.5965999960899353},{"id":"https://openalex.org/C98763669","wikidata":"https://www.wikidata.org/wiki/Q176645","display_name":"Markov chain","level":2,"score":0.5641999840736389},{"id":"https://openalex.org/C183003079","wikidata":"https://www.wikidata.org/wiki/Q1000371","display_name":"Personalization","level":2,"score":0.5288000106811523},{"id":"https://openalex.org/C2779344036","wikidata":"https://www.wikidata.org/wiki/Q11320476","display_name":"Digital content","level":2,"score":0.5248000025749207},{"id":"https://openalex.org/C2781316041","wikidata":"https://www.wikidata.org/wiki/Q1230584","display_name":"Diversity (politics)","level":2,"score":0.4982999861240387},{"id":"https://openalex.org/C108827166","wikidata":"https://www.wikidata.org/wiki/Q175975","display_name":"Internet privacy","level":1,"score":0.41609999537467957},{"id":"https://openalex.org/C159886148","wikidata":"https://www.wikidata.org/wiki/Q176645","display_name":"Markov process","level":2,"score":0.39399999380111694},{"id":"https://openalex.org/C121864883","wikidata":"https://www.wikidata.org/wiki/Q677916","display_name":"Statistical physics","level":1,"score":0.3817000091075897},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.3646000027656555},{"id":"https://openalex.org/C162446236","wikidata":"https://www.wikidata.org/wiki/Q653137","display_name":"Content analysis","level":2,"score":0.33809998631477356},{"id":"https://openalex.org/C48126324","wikidata":"https://www.wikidata.org/wiki/Q5276136","display_name":"Digital polymerase chain reaction","level":4,"score":0.3075999915599823},{"id":"https://openalex.org/C2986847828","wikidata":"https://www.wikidata.org/wiki/Q269415","display_name":"Content delivery","level":2,"score":0.29760000109672546},{"id":"https://openalex.org/C2522767166","wikidata":"https://www.wikidata.org/wiki/Q2374463","display_name":"Data science","level":1,"score":0.29319998621940613},{"id":"https://openalex.org/C3020234875","wikidata":"https://www.wikidata.org/wiki/Q1260632","display_name":"Media content","level":2,"score":0.2694000005722046},{"id":"https://openalex.org/C117220453","wikidata":"https://www.wikidata.org/wiki/Q5172842","display_name":"Correlation","level":2,"score":0.2632000148296356},{"id":"https://openalex.org/C149782125","wikidata":"https://www.wikidata.org/wiki/Q160039","display_name":"Econometrics","level":1,"score":0.26109999418258667},{"id":"https://openalex.org/C99498987","wikidata":"https://www.wikidata.org/wiki/Q2210247","display_name":"Noise (video)","level":3,"score":0.2542000114917755}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1140/epjds/s13688-026-00629-2","is_oa":true,"landing_page_url":"https://doi.org/10.1140/epjds/s13688-026-00629-2","pdf_url":null,"source":{"id":"https://openalex.org/S2504380752","display_name":"EPJ Data Science","issn_l":"2193-1127","issn":["2193-1127"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310319965","host_organization_name":"Springer Nature","host_organization_lineage":["https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Nature"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"EPJ Data Science","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:cf6f7f3769304551b68ceccb449ef51f","is_oa":true,"landing_page_url":"https://doaj.org/article/cf6f7f3769304551b68ceccb449ef51f","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"EPJ Data Science, Vol 15, Iss 1 (2026)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.1140/epjds/s13688-026-00629-2","is_oa":true,"landing_page_url":"https://doi.org/10.1140/epjds/s13688-026-00629-2","pdf_url":null,"source":{"id":"https://openalex.org/S2504380752","display_name":"EPJ Data Science","issn_l":"2193-1127","issn":["2193-1127"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310319965","host_organization_name":"Springer Nature","host_organization_lineage":["https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Nature"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"EPJ Data Science","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320328926","display_name":"Max-Planck-Institut f\u00fcr Bildungsforschung","ror":"https://ror.org/02pp7px91"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":31,"referenced_works":["https://openalex.org/W2909693411","https://openalex.org/W2912265160","https://openalex.org/W2955488027","https://openalex.org/W3001221685","https://openalex.org/W3002706545","https://openalex.org/W3112943580","https://openalex.org/W3133423348","https://openalex.org/W3173463346","https://openalex.org/W3175319024","https://openalex.org/W3175993430","https://openalex.org/W3183223257","https://openalex.org/W4206125442","https://openalex.org/W4224316062","https://openalex.org/W4297534160","https://openalex.org/W4378189040","https://openalex.org/W4383710566","https://openalex.org/W4384696219","https://openalex.org/W4385298751","https://openalex.org/W4385546082","https://openalex.org/W4385802839","https://openalex.org/W4388835050","https://openalex.org/W4389331683","https://openalex.org/W4396723167","https://openalex.org/W4396758689","https://openalex.org/W4399205198","https://openalex.org/W4402702536","https://openalex.org/W4403162623","https://openalex.org/W4404940754","https://openalex.org/W4408138635","https://openalex.org/W4409251165","https://openalex.org/W4411120841"],"related_works":[],"abstract_inverted_index":{"Abstract":[0],"Content":[1],"exposure":[2],"online":[3],"is":[4,116],"increasingly":[5],"shaped":[6],"by":[7,129],"socio-technical":[8],"systems,":[9],"where":[10],"human":[11],"and":[12,57,124,133,151,180,185],"algorithmic":[13],"factors":[14],"interact.":[15],"TikTok":[16,62],"exemplifies":[17],"strong":[18,101,146],"algorithm-driven":[19],"curation,":[20],"tailoring":[21],"the":[22,34,43,49,97,109,154,160,177,181],"stream":[23],"of":[24,45,156,162],"content":[25,46,64,94,141,158,186],"towards":[26],"users\u2019":[27,67],"interests":[28,82,99],"based":[29],"on":[30,33,172],"their":[31],"behavior":[32],"platform.":[35],"Despite":[36],"growing":[37],"concerns":[38],"about":[39],"TikTok\u2019s":[40,86,137],"societal":[41],"impact,":[42],"dynamics":[44,125],"amplification":[47,115,150,155],"at":[48],"individual":[50],"level":[51],"remain":[52],"largely":[53],"unquantified.":[54],"How":[55],"quickly,":[56],"to":[58,83,170],"what":[59],"extent,":[60],"does":[61],"amplify":[63],"aligned":[65,95],"with":[66,80,85,96,103],"interests?":[68],"To":[69],"address":[70],"these":[71],"questions,":[72],"we":[73,143],"conduct":[74],"a":[75,145],"sock-puppet":[76],"audit,":[77],"deploying":[78],"bots":[79],"different":[81],"engage":[84],"\u201cFor":[87],"You\u201d":[88],"feed.":[89],"Our":[90,167],"findings":[91,168],"reveal":[92],"that":[93],"bots\u2019":[98],"undergoes":[100],"amplification,":[102],"rapid":[104],"reinforcement":[105],"typically":[106],"occurring":[107],"within":[108],"first":[110],"200":[111],"videos":[112],"watched.":[113],"While":[114],"consistently":[117],"observed":[118],"across":[119],"all":[120],"interests,":[121],"its":[122],"intensity":[123],"vary,":[126],"as":[127,153],"revealed":[128],"time":[130],"series":[131],"analyses":[132],"Markov":[134],"models.":[135],"Although":[136],"algorithm":[138],"preserves":[139],"some":[140],"diversity,":[142],"find":[144],"negative":[147],"correlation":[148],"between":[149,183],"exploration:":[152],"interest-aligned":[157],"increases,":[159],"diversity":[161],"encountered":[163],"hashtags":[164],"declines":[165],"sharply.":[166],"contribute":[169],"discussions":[171],"socio-algorithmic":[173],"feedback":[174],"loops":[175],"in":[176],"digital":[178],"age":[179],"trade-offs":[182],"personalization":[184],"diversity.":[187]},"counts_by_year":[{"year":2026,"cited_by_count":9}],"updated_date":"2026-07-29T09:40:50.615796","created_date":"2026-02-11T00:00:00"}