{"id":"https://openalex.org/W7144536492","doi":null,"title":"Evaluaci\u00f3n comparativa de modelos de lenguaje (BERT y GPT) en el an\u00e1lisis de sentimiento de rese\u00f1as de clientes, con extensi\u00f3n a LlaMA y exploraci\u00f3n de sesgos","display_name":"Evaluaci\u00f3n comparativa de modelos de lenguaje (BERT y GPT) en el an\u00e1lisis de sentimiento de rese\u00f1as de clientes, con extensi\u00f3n a LlaMA y exploraci\u00f3n de sesgos","publication_year":2026,"publication_date":"2026-01-21","ids":{"openalex":"https://openalex.org/W7144536492"},"language":"es","primary_location":{"id":"pmh:oai:openaccess.uoc.edu:10609/154050","doi":null,"is_oa":true,"landing_page_url":"https://hdl.handle.net/10609/154050","pdf_url":"https://openaccess.uoc.edu/bitstreams/b6048c7e-74c1-485f-8d73-e7635cc2bf25/download","source":{"id":"https://openalex.org/S7407053569","display_name":"O2 - Repositori Institucional (Universitat Oberta de Catalunya)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"info:eu-repo/semantics/bachelorThesis"},"volume":null,"type":"dissertation","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://openaccess.uoc.edu/bitstreams/b6048c7e-74c1-485f-8d73-e7635cc2bf25/download","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5131216637","display_name":"Ignacio S\u00e1nchez Carrillo","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"S\u00e1nchez Carrillo, Ignacio","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":["https://openalex.org/A5131216637"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":true,"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/T10664","display_name":"Sentiment Analysis and Opinion Mining","score":0.9945999979972839,"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"}},"topics":[{"id":"https://openalex.org/T10664","display_name":"Sentiment Analysis and Opinion Mining","score":0.9945999979972839,"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/T10028","display_name":"Topic Modeling","score":0.004900000058114529,"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/T12262","display_name":"Hate Speech and Cyberbullying Detection","score":0.0,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/sentiment-analysis","display_name":"sentiment analysis","score":0.9710000157356262},{"id":"https://openalex.org/keywords/customer-reviews","display_name":"customer reviews","score":0.9559999704360962},{"id":"https://openalex.org/keywords/tinyllama","display_name":"TinyLlama","score":0.753000020980835},{"id":"https://openalex.org/keywords/llama","display_name":"llamas","score":0.746999979019165},{"id":"https://openalex.org/keywords/bert","display_name":"BERT","score":0.8629999756813049},{"id":"https://openalex.org/keywords/gpt-2","display_name":"GPT-2","score":0.9629999995231628},{"id":"https://openalex.org/keywords/small-language-models","display_name":"small language models","score":0.8100000023841858},{"id":"https://openalex.org/keywords/low-rank-adaptation","display_name":"low-rank adaptation","score":0.6230000257492065},{"id":"https://openalex.org/keywords/4-bit-quantization","display_name":"4-bit quantization","score":0.9210000038146973},{"id":"https://openalex.org/keywords/transfer-learning","display_name":"transfer learning","score":0.5109999775886536},{"id":"https://openalex.org/keywords/domain-generalization","display_name":"domain generalization","score":0.6700000166893005},{"id":"https://openalex.org/keywords/gender-bias","display_name":"gender bias","score":0.753000020980835},{"id":"https://openalex.org/keywords/counterfactual-data-augmentation","display_name":"counterfactual data augmentation","score":0.9409999847412109},{"id":"https://openalex.org/keywords/ethical-auditing","display_name":"ethical auditing","score":0.492000013589859},{"id":"https://openalex.org/keywords/generative-vs-discriminative-models","display_name":"generative vs discriminative models","score":0.6769999861717224}],"concepts":[{"id":"https://openalex.org/C15708023","wikidata":"https://www.wikidata.org/wiki/Q80083","display_name":"Humanities","level":1,"score":0.527999997138977},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.5005000233650208},{"id":"https://openalex.org/C108650721","wikidata":"https://www.wikidata.org/wiki/Q1783253","display_name":"Counterfactual thinking","level":2,"score":0.37229999899864197},{"id":"https://openalex.org/C36503486","wikidata":"https://www.wikidata.org/wiki/Q11235244","display_name":"Domain (mathematical analysis)","level":2,"score":0.3580999970436096},{"id":"https://openalex.org/C15744967","wikidata":"https://www.wikidata.org/wiki/Q9418","display_name":"Psychology","level":0,"score":0.35350000858306885},{"id":"https://openalex.org/C535291247","wikidata":"https://www.wikidata.org/wiki/Q177567","display_name":"Amazon rainforest","level":2,"score":0.3034000098705292},{"id":"https://openalex.org/C144024400","wikidata":"https://www.wikidata.org/wiki/Q21201","display_name":"Sociology","level":0,"score":0.23469999432563782},{"id":"https://openalex.org/C12725497","wikidata":"https://www.wikidata.org/wiki/Q810247","display_name":"Baseline (sea)","level":2,"score":0.2296999990940094},{"id":"https://openalex.org/C2776608160","wikidata":"https://www.wikidata.org/wiki/Q4785462","display_name":"Natural (archaeology)","level":2,"score":0.21899999678134918},{"id":"https://openalex.org/C2777267654","wikidata":"https://www.wikidata.org/wiki/Q3519023","display_name":"Test (biology)","level":2,"score":0.1835000067949295}],"mesh":[],"locations_count":1,"locations":[{"id":"pmh:oai:openaccess.uoc.edu:10609/154050","doi":null,"is_oa":true,"landing_page_url":"https://hdl.handle.net/10609/154050","pdf_url":"https://openaccess.uoc.edu/bitstreams/b6048c7e-74c1-485f-8d73-e7635cc2bf25/download","source":{"id":"https://openalex.org/S7407053569","display_name":"O2 - Repositori Institucional (Universitat Oberta de Catalunya)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"info:eu-repo/semantics/bachelorThesis"}],"best_oa_location":{"id":"pmh:oai:openaccess.uoc.edu:10609/154050","doi":null,"is_oa":true,"landing_page_url":"https://hdl.handle.net/10609/154050","pdf_url":"https://openaccess.uoc.edu/bitstreams/b6048c7e-74c1-485f-8d73-e7635cc2bf25/download","source":{"id":"https://openalex.org/S7407053569","display_name":"O2 - Repositori Institucional (Universitat Oberta de Catalunya)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"info:eu-repo/semantics/bachelorThesis"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W7144536492.pdf","grobid_xml":"https://content.openalex.org/works/W7144536492.grobid-xml"},"referenced_works_count":42,"referenced_works":["https://openalex.org/W1614298861","https://openalex.org/W1682403713","https://openalex.org/W2064675550","https://openalex.org/W2087875390","https://openalex.org/W2170240176","https://openalex.org/W2296073425","https://openalex.org/W2338908902","https://openalex.org/W2395579298","https://openalex.org/W2487898712","https://openalex.org/W2525778437","https://openalex.org/W2531327146","https://openalex.org/W2618851150","https://openalex.org/W2626778328","https://openalex.org/W2763421725","https://openalex.org/W2769358515","https://openalex.org/W2786715987","https://openalex.org/W2908510526","https://openalex.org/W2951501516","https://openalex.org/W2970903692","https://openalex.org/W2973727699","https://openalex.org/W2978017171","https://openalex.org/W2980708516","https://openalex.org/W3001279689","https://openalex.org/W3006439205","https://openalex.org/W3030163527","https://openalex.org/W3118781290","https://openalex.org/W3118813946","https://openalex.org/W3135367836","https://openalex.org/W3168867926","https://openalex.org/W3192401439","https://openalex.org/W3213208261","https://openalex.org/W4226278401","https://openalex.org/W4229658977","https://openalex.org/W4254751698","https://openalex.org/W4309674289","https://openalex.org/W4322718191","https://openalex.org/W4390632065","https://openalex.org/W4391766565","https://openalex.org/W7133198810","https://openalex.org/W7133208539","https://openalex.org/W7133224126","https://openalex.org/W7133233472"],"related_works":["https://openalex.org/W7165616865","https://openalex.org/W7203720891","https://openalex.org/W7218576741","https://openalex.org/W7126245135","https://openalex.org/W4391591653","https://openalex.org/W7214258353","https://openalex.org/W4409985211","https://openalex.org/W4400850098","https://openalex.org/W4412417329","https://openalex.org/W4416756261"],"abstract_inverted_index":{"Esta":[0],"investigaci\u00f3n":[1],"desaf\u00eda":[2],"la":[3,14,81,105,115,122,125,160,182,191],"convenci\u00f3n":[4],"cl\u00e1sica":[5],"en":[6,28,93,132,144,196],"Procesamiento":[7],"del":[8,184],"Lenguaje":[9],"Natural":[10],"(NLP)":[11],"que":[12,104,179],"establece":[13],"superioridad":[15],"de":[16,30,32,52,57,59,65,72,91,108,117,124,136,149,155,170,175,194],"las":[17,25],"arquitecturas":[18],"discriminativas":[19],"(encoder-only,":[20],"como":[21],"BERT)":[22],"frente":[23],"a":[24],"generativas":[26],"(decoderonly)":[27],"tareas":[29],"clasificaci\u00f3n":[31],"sentimiento":[33],"bajo":[34,60],"recursos":[35],"limitados.":[36],"Mediante":[37],"una":[38,153],"metodolog\u00eda":[39],"experimental":[40],"sobre":[41],"los":[42,109],"datasets":[43],"IMDb,":[44,94],"Amazon":[45],"y":[46,63,74,102],"Yelp,":[47],"se":[48,120],"eval\u00faa":[49],"el":[50,84,129],"rendimiento":[51,140],"TinyLlama-1.1B":[53],"optimizado":[54],"con":[55,69],"t\u00e9cnicas":[56],"adaptaci\u00f3n":[58],"rango":[61],"(LoRA)":[62],"cuantizaci\u00f3n":[64],"4-bits":[66],"(NF4),":[67],"contrast\u00e1ndolo":[68],"un":[70,89,145,173],"baseline":[71],"BERT":[73,99],"GPT-2.":[75],"La":[76],"evidencia":[77],"emp\u00edrica":[78],"obtenida":[79],"refuta":[80],"hip\u00f3tesis":[82],"nula:":[83],"modelo":[85,130,185],"generativo":[86],"TinyLlama":[87],"alcanz\u00f3":[88],"F1-Score":[90],"0.9195":[92],"superando":[95],"significativamente":[96],"al":[97,141],"est\u00e1ndar":[98],"(F1":[100],"0.8592)":[101],"demostrando":[103],"plasticidad":[106],"latente":[107],"small":[110],"language":[111],"models":[112],"(SLMs)":[113],"compensa":[114],"falta":[116],"bidireccionalidad.":[118],"Asimismo,":[119],"documenta":[121],"\"Paradoja":[123],"Transferencia":[126],"Positiva\",":[127],"donde":[128],"entrenado":[131],"narrativa":[133],"compleja":[134],"(cine":[135],"IMDB)":[137],"mejor\u00f3":[138],"su":[139],"F1":[142],"0.9522":[143],"dominio":[146],"no":[147],"visto":[148],"productos":[150],"(Amazon),":[151],"validando":[152],"capacidad":[154],"generalizaci\u00f3n":[156],"sem\u00e1ntica":[157],"superior.":[158],"Finalmente,":[159],"auditor\u00eda":[161],"\u00e9tica":[162],"mediante":[163],"counterfactual":[164],"data":[165],"augmentation":[166],"revel\u00f3":[167],"riesgos":[168],"latentes":[169],"seguridad,":[171],"identificando":[172],"sesgo":[174],"g\u00e9nero":[176],"(\"Efecto":[177],"Hero\u00edna\")":[178],"incrementa":[180],"artificialmente":[181],"confianza":[183],"(+9%)":[186],"ante":[187],"pronombres":[188],"femeninos,":[189],"subrayando":[190],"necesidad":[192],"cr\u00edtica":[193],"alineaci\u00f3n":[195],"despliegues":[197],"productivos.":[198]},"counts_by_year":[],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2026-04-01T00:00:00"}
