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2020 – today

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2024
[j5]
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Sylvia Vassileva, Georgi Grazhdanski, Ivan Koychev, Svetla Boytcheva:
Transformer-based approach for symptom recognition and multilingual linking. Database J. Biol. Databases Curation 2024 (2024)
[c66]
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Rocktim Jyoti Das, Simeon Emilov Hristov, Haonan Li, Dimitar Dimitrov, Ivan Koychev, Preslav Nakov:
EXAMS-V: A Multi-Discipline Multilingual Multimodal Exam Benchmark for Evaluating Vision Language Models. ACL (1) 2024: 7768-7791
[c65]
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Julia Maria Struß, Federico Ruggeri, Alberto Barrón-Cedeño, Firoj Alam, Dimitar Dimitrov, Andrea Galassi, Georgi Pachov, Ivan Koychev, Preslav Nakov, Melanie Siegel, Michael Wiegand, Maram Hasanain, Reem Suwaileh, Wajdi Zaghouani:
Overview of the CLEF-2024 CheckThat! Lab Task 2 on Subjectivity in News Articles. CLEF (Working Notes) 2024: 287-298
[c64]
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  - conf/clef/PiskorskiSA0DJP24
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Jakub Piskorski, Nicolas Stefanovitch, Firoj Alam, Ricardo Campos, Dimitar Dimitrov, Alípio Jorge, Senja Pollak, Nikolay Ribin, Zoran Fijavz, Maram Hasanain, Purificação Silvano, Elisa Sartori, Nuno Guimarães, Ana Zwitter Vitez, Ana Filipa Pacheco, Ivan Koychev, Nana Yu, Preslav Nakov, Giovanni Da San Martino:
Overview of the CLEF-2024 CheckThat! Lab Task 3 on Persuasion Techniques. CLEF (Working Notes) 2024: 299-310
[c63]
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Mirela Dryankova, Dimitar Dimitrov, Ivan Koychev, Preslav Nakov:
Mirela at CheckThat! 2024: Check-worthiness of Tweets with Multilingual Embeddings and Adversarial Training. CLEF (Working Notes) 2024: 405-410
[c62]
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  - conf/icassp/IvanovKHN24
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Petar Ivanov, Ivan Koychev, Momchil Hardalov, Preslav Nakov:
Detecting Check-Worthy Claims in Political Debates, Speeches, and Interviews Using Audio Data. ICASSP 2024: 12011-12015
[c61]
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  - conf/iscc/KiyamousaviKK24
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Ensiye Kiyamousavi, Boris Kraychev, Ivan Koychev:
FedDyS: Enhancing Federated Learning Efficiency with Dynamic Sample Selection. ISCC 2024: 1-8
[i32]
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  - journals/corr/abs-2403-10378
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Rocktim Jyoti Das, Simeon Emilov Hristov, Haonan Li, Dimitar Iliyanov Dimitrov, Ivan Koychev, Preslav Nakov:
EXAMS-V: A Multi-Discipline Multilingual Multimodal Exam Benchmark for Evaluating Vision Language Models. CoRR abs/2403.10378 (2024)
[i31]
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  - journals/corr/abs-2409-00527
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Angel Beshirov, Milena Dobreva, Dimitar Dimitrov, Momchil Hardalov, Ivan Koychev, Preslav Nakov:
Post-OCR Text Correction for Bulgarian Historical Documents. CoRR abs/2409.00527 (2024)
2023
[j4]
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  - journals/npjdm/MuurlingBVHCTLRGGSKHGAV23
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Marijn Muurling, Casper de Boer, Srinivasan Vairavan, Robbert L. Harms, Antonella Santuccione Chadha, Ioannis Tarnanas, Estefania Vilarino Luis, Dorota Religa, Martha Therese Gjestsen, Samantha Galluzzi, Marta Ibarria Sala, Ivan Koychev, Lucrezia Hausner, Mara Gkioka, Dag Aarsland, Pieter Jelle Visser, Anna-Katharine Brem:
Augmented reality versus standard tests to assess cognition and function in early Alzheimer's disease. npj Digit. Medicine 6 (2023)
[c60]
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Momchil Hardalov, Pepa Atanasova, Todor Mihaylov, Galia Angelova, Kiril Simov, Petya Osenova, Veselin Stoyanov, Ivan Koychev, Preslav Nakov, Dragomir Radev:
bgGLUE: A Bulgarian General Language Understanding Evaluation Benchmark. ACL (1) 2023: 8733-8759
[c59]
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Ensiye Kiyamousavi, Boris Kraychev, Ivan Koychev:
FedSym: Unleashing the Power of Entropy for Benchmarking the Algorithms for Federated Learning. IEEE Big Data 2023: 4308-4317
[c58]
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Sylvia Vassileva, Georgi Grazhdanski, Svetla Boytcheva, Ivan Koychev:
Fusion @ BioASQ MedProcNER: Transformer-based Approach for Procedure Recognition and Linking in Spanish Clinical Text. CLEF (Working Notes) 2023: 190-205
[c57]
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Georgi Pachov, Dimitar Dimitrov, Ivan Koychev, Preslav Nakov:
Gpachov at CheckThat!-2023: A Diverse Multi-approach Ensemble for Subjectivity Detection in News Articles. CLEF (Working Notes) 2023: 404-412
[c56]
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Momchil Hardalov, Ivan Koychev, Preslav Nakov:
Enriched Pre-trained Transformers for Joint Slot Filling and Intent Detection. RANLP 2023: 480-493
[c55]
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  - conf/ranlp/TemnikovaMGMK23
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Irina Temnikova, Iva Marinova, Silvia Gargova, Ruslana Margova, Ivan Koychev:
Looking for Traces of Textual Deepfakes in Bulgarian on Social Media. RANLP 2023: 1151-1161
[c54]
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  - conf/semeval/VassilevaGBK23
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Sylvia Vassileva, Georgi Grazhdanski, Svetla Boytcheva, Ivan Koychev:
FMI-SU at SemEval-2023 Task 7: Two-level Entailment Classification of Clinical Trials Enhanced by Contextual Data Augmentation. SemEval@ACL 2023: 1454-1462
[c53]
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  - conf/ucc/KraychevKK23
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Boris Kraychev, Ensiye Kiyamousavi, Ivan Koychev:
FedGrid: Federated Model Aggregation via Grid Shifting. UCC 2023: 53
[e2]
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  - conf/eris/2022
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Avram Eskenazi, George Totkov, Ivan Koychev:
Proceedings of the 15th International Conference Education and Research in the Information Society, Plovdiv, Bulgaria, October 13 - 14, 2022. CEUR Workshop Proceedings 3372, CEUR-WS.org 2023 [contents]
[i30]
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  - journals/corr/abs-2305-19392
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Angel Beshirov, Suzan Hadzhieva, Ivan Koychev, Milena Dobreva:
DuoSearch: A Novel Search Engine for Bulgarian Historical Documents. CoRR abs/2305.19392 (2023)
[i29]
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  - journals/corr/abs-2306-02349
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Momchil Hardalov, Pepa Atanasova, Todor Mihaylov, Galia Angelova, Kiril Simov, Petya Osenova, Ves Stoyanov, Ivan Koychev, Preslav Nakov, Dragomir Radev:
bgGLUE: A Bulgarian General Language Understanding Evaluation Benchmark. CoRR abs/2306.02349 (2023)
[i28]
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  - journals/corr/abs-2306-05535
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Petar Ivanov, Ivan Koychev, Momchil Hardalov, Preslav Nakov:
Detecting Check-Worthy Claims in Political Debates, Speeches, and Interviews Using Audio Data. CoRR abs/2306.05535 (2023)
[i27]
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  - journals/corr/abs-2309-06844
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Georgi Pachov, Dimitar Dimitrov, Ivan Koychev, Preslav Nakov:
Gpachov at CheckThat! 2023: A Diverse Multi-Approach Ensemble for Subjectivity Detection in News Articles. CoRR abs/2309.06844 (2023)
[i26]
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  - journals/corr/abs-2310-07807
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Ensiye Kiyamousavi, Boris Kraychev, Ivan Koychev:
FedSym: Unleashing the Power of Entropy for Benchmarking the Algorithms for Federated Learning. CoRR abs/2310.07807 (2023)
2022
[c52]
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  - conf/ecir/BeshirovHKD22
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Angel Beshirov, Suzan Hadzhieva, Ivan Koychev, Milena Dobreva:
DuoSearch: A Novel Search Engine for Bulgarian Historical Documents. ECIR (2) 2022: 265-269
[c51]
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  - conf/ecir/VachevHKGKN22
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Kristiyan Vachev, Momchil Hardalov, Georgi Karadzhov, Georgi Georgiev, Ivan Koychev, Preslav Nakov:
Leaf: Multiple-Choice Question Generation. ECIR (2) 2022: 321-328
[c50]
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  - conf/eris/ZmiycharovLTK22
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Valentin Zmiycharov, Gergana Angelova Lazarova, Todor Tsonkov, Ivan Koychev:
StructExtSum - Bulgarian Legislation Text Extractive Summarization by Structure Understanding. ERIS 2022: 25-31
[c49]
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  - conf/ijcnlp/HardalovCKIN22
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Momchil Hardalov, Anton Chernyavskiy, Ivan Koychev, Dmitry Ilvovsky, Preslav Nakov:
CrowdChecked: Detecting Previously Fact-Checked Claims in Social Media. AACL/IJCNLP (1) 2022: 266-285
[c48]
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  - conf/isgt2/VassilevaBK22
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Sylvia Vassileva, Svetla Boytcheva, Ivan Koychev:
Tool for Automatic Annotation of Clinical Texts in Bulgarian - BGMedAnno. ISGT 2022: 74-88
[i25]
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  - journals/corr/abs-2201-09012
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Kristiyan Vachev, Momchil Hardalov, Georgi Karadzhov, Georgi Georgiev, Ivan Koychev, Preslav Nakov:
Leaf: Multiple-Choice Question Generation. CoRR abs/2201.09012 (2022)
[i24]
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  - journals/corr/abs-2210-04447
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Momchil Hardalov, Anton Chernyavskiy, Ivan Koychev, Dmitry Ilvovsky, Preslav Nakov:
CrowdChecked: Detecting Previously Fact-Checked Claims in Social Media. CoRR abs/2210.04447 (2022)
2021
[c47]
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  - conf/eris/TsonkovLZK21
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Todor Tsonkov, Gergana Angelova Lazarova, Valentin Zmiycharov, Ivan Koychev:
A Comparative Study of Extractive and Abstractive Approaches for Automatic Text Summarization on Scientific Texts. ERIS 2021: 29-34
[c46]
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  - conf/ranlp/BozhanovaDKCVN21
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Krasimira Bozhanova, Yoan Dinkov, Ivan Koychev, Maria Castaldo, Tommaso Venturini, Preslav Nakov:
Predicting the Factuality of Reporting of News Media Using Observations about User Attention in Their YouTube Channels. RANLP 2021: 182-189
[c45]
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  - conf/ranlp/VelichkovVGKIIK21
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Boris Velichkov, Sylvia Vassileva, Simeon Gerginov, Boris Kraychev, Ivaylo Ivanov, Philip Ivanov, Ivan Koychev, Svetla Boytcheva:
Comparative Analysis of Fine-tuned Deep Learning Language Models for ICD-10 Classification Task for Bulgarian Language. RANLP 2021: 1448-1454
[c44]
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Valentin Zmiycharov, Milen Chechev, Gergana Angelova Lazarova, Todor Tsonkov, Ivan Koychev:
A Comparative Study on Abstractive and Extractive Approaches in Summarization of European Legislation Documents. RANLP 2021: 1645-1651
[e1]
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Avram Eskenazi, George Totkov, Ivan Koychev, Krassimira Ivanova:
Proceedings of the 14th International Conference Education and Research in the Information Society, ERIS 2021, Plovdiv, Bulgaria, September 27-28, 2021. CEUR Workshop Proceedings 3061, CEUR-WS.org 2021 [contents]
[i23]
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  - journals/corr/abs-2108-12519
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Krasimira Bozhanova, Yoan Dinkov, Ivan Koychev, Maria Castaldo, Tommaso Venturini, Preslav Nakov:
Predicting the Factuality of Reporting of News Media Using Observations About User Attention in Their YouTube Channels. CoRR abs/2108.12519 (2021)
[i22]
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  - journals/corr/abs-2108-12898
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Kristiyan Vachev, Momchil Hardalov, Georgi Karadzhov, Georgi Georgiev, Ivan Koychev, Preslav Nakov:
Generating Answer Candidates for Quizzes and Answer-Aware Question Generators. CoRR abs/2108.12898 (2021)
[i21]
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  - journals/corr/abs-2109-13726
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Todor Mihaylov, Ivan Koychev, Georgi Georgiev, Preslav Nakov:
Exposing Paid Opinion Manipulation Trolls. CoRR abs/2109.13726 (2021)
[i20]
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  - journals/corr/abs-2109-15120
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Tsvetomila Mihaylova, Pepa Gencheva, Martin Boyanov, Ivana Yovcheva, Todor Mihaylov, Momchil Hardalov, Yasen Kiprov, Daniel Balchev, Ivan Koychev, Preslav Nakov, Ivelina Nikolova, Galia Angelova:
SUper Team at SemEval-2016 Task 3: Building a feature-rich system for community question answering. CoRR abs/2109.15120 (2021)
2020
[c43]
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Boris Velichkov, Kristina Ivanova, Valeri Hristov, Ivan I. Borisov, Alexander Peychev, Ivan Koychev, Svetla Boytcheva:
AI-driven Approach for Automatic Synthetic Patient Status Corpus Generation. AIVR 2020: 29-35
[c42]
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Boris Velichkov, Simeon Gerginov, Panayot Panayotov, Sylvia Vassileva, Gerasim Velchev, Ivan Koychev, Svetla Boytcheva:
Cascading Approach for Automatic ICD-10 Codes Association To Diseases in Bulgarian. BioInfoMed 2020: 247-260
[c41]
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  - conf/clef/NikolovMKN20
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Alex Nikolov, Giovanni Da San Martino, Ivan Koychev, Preslav Nakov:
Team Alex at CLEF CheckThat! 2020: Identifying Check-Worthy Tweets With Transformer Models. CLEF (Working Notes) 2020
[c40]
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Momchil Hardalov, Todor Mihaylov, Dimitrina Zlatkova, Yoan Dinkov, Ivan Koychev, Preslav Nakov:
EXAMS: A Multi-subject High School Examinations Dataset for Cross-lingual and Multilingual Question Answering. EMNLP (1) 2020: 5427-5444
[c39]
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  - conf/fedcsis/BoytchevaVVK20
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Svetla Boytcheva, Boris Velichkov, Gerasim Velchev, Ivan Koychev:
Automatic Generation of Annotated Corpora of Diagnoses with ICD-10 codes based on Open Data and Linked Open Data. FedCSIS 2020: 163-167
[i19]
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  - journals/corr/abs-2004-14848
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Momchil Hardalov, Ivan Koychev, Preslav Nakov:
Enriched Pre-trained Transformers for Joint Slot Filling and Intent Detection. CoRR abs/2004.14848 (2020)
[i18]
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  - journals/corr/abs-2009-02931
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Alex Nikolov, Giovanni Da San Martino, Ivan Koychev, Preslav Nakov:
Team Alex at CLEF CheckThat! 2020: Identifying Check-Worthy Tweets With Transformer Models. CoRR abs/2009.02931 (2020)
[i17]
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Momchil Hardalov, Todor Mihaylov, Dimitrina Zlatkova, Yoan Dinkov, Ivan Koychev, Preslav Nakov:
EXAMS: A Multi-Subject High School Examinations Dataset for Cross-Lingual and Multilingual Question Answering. CoRR abs/2011.03080 (2020)

2010 – 2019

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2019
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Momchil Hardalov, Ivan Koychev, Preslav Nakov:
Machine Reading Comprehension for Answer Re-Ranking in Customer Support Chatbots. Inf. 10(3): 82 (2019)
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Daniel Kopev, Ahmed Ali, Ivan Koychev, Preslav Nakov:
Detecting Deception in Political Debates Using Acoustic and Textual Features. ASRU 2019: 652-659
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Dimitrina Zlatkova, Preslav Nakov, Ivan Koychev:
Fact-Checking Meets Fauxtography: Verifying Claims About Images. EMNLP/IJCNLP (1) 2019: 2099-2108
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Yoan Dinkov, Ahmed Ali, Ivan Koychev, Preslav Nakov:
Predicting the Leading Political Ideology of YouTube Channels Using Acoustic, Textual, and Metadata Information. INTERSPEECH 2019: 501-505
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Yoan Dinkov, Ivan Koychev, Preslav Nakov:
Detecting Toxicity in News Articles: Application to Bulgarian. RANLP 2019: 247-258
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Momchil Hardalov, Ivan Koychev, Preslav Nakov:
Beyond English-Only Reading Comprehension: Experiments in Zero-shot Multilingual Transfer for Bulgarian. RANLP 2019: 447-459
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Boris Velichkov, Ivan Koychev, Svetla Boytcheva:
Deep learning contextual models for prediction of sport event outcome from sportsman's interviews. RANLP 2019: 1240-1246
[i16]
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  - journals/corr/abs-1902-04574
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Momchil Hardalov, Ivan Koychev, Preslav Nakov:
Machine Reading Comprehension for Answer Re-Ranking in Customer Support Chatbots. CoRR abs/1902.04574 (2019)
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  - journals/corr/abs-1906-06917
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Daniel Kopev, Dimitrina Zlatkova, Kristiyan Mitov, Atanas Atanasov, Momchil Hardalov, Ivan Koychev, Preslav Nakov:
Recursive Style Breach Detection with Multifaceted Ensemble Learning. CoRR abs/1906.06917 (2019)
[i14]
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  - journals/corr/abs-1908-01519
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Momchil Hardalov, Ivan Koychev, Preslav Nakov:
Beyond English-only Reading Comprehension: Experiments in Zero-Shot Multilingual Transfer for Bulgarian. CoRR abs/1908.01519 (2019)
[i13]
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  - journals/corr/abs-1908-09785
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Yoan Dinkov, Ivan Koychev, Preslav Nakov:
Detecting Toxicity in News Articles: Application to Bulgarian. CoRR abs/1908.09785 (2019)
[i12]
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  - journals/corr/abs-1908-11722
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Dimitrina Zlatkova, Preslav Nakov, Ivan Koychev:
Fact-Checking Meets Fauxtography: Verifying Claims About Images. CoRR abs/1908.11722 (2019)
[i11]
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  - journals/corr/abs-1910-01990
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Daniel Kopev, Ahmed Ali, Ivan Koychev, Preslav Nakov:
Detecting Deception in Political Debates Using Acoustic and Textual Features. CoRR abs/1910.01990 (2019)
[i10]
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  - journals/corr/abs-1910-08948
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Yoan Dinkov, Ahmed Ali, Ivan Koychev, Preslav Nakov:
Predicting the Leading Political Ideology of YouTube Channels Using Acoustic, Textual, and Metadata Information. CoRR abs/1910.08948 (2019)
[i9]
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  - journals/corr/abs-1911-08125
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Momchil Hardalov, Ivan Koychev, Preslav Nakov:
In Search of Credible News. CoRR abs/1911.08125 (2019)
[i8]
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  - journals/corr/abs-1912-08084
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Pepa Gencheva, Ivan Koychev, Lluís Màrquez, Alberto Barrón-Cedeño, Preslav Nakov:
A Context-Aware Approach for Detecting Check-Worthy Claims in Political Debates. CoRR abs/1912.08084 (2019)
2018
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Todor Mihaylov, Tsvetomila Mihaylova, Preslav Nakov, Lluís Màrquez, Georgi Georgiev, Ivan Koychev:
The dark side of news community forums: opinion manipulation trolls. Internet Res. 28(5): 1292-1312 (2018)
[c32]
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Momchil Hardalov, Ivan Koychev, Preslav Nakov:
Towards Automated Customer Support. AIMSA 2018: 48-59
[c31]
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Daniel Kopev, Dimitrina Zlatkova, Kristiyan Mitov, Atanas Atanasov, Momchil Hardalov, Ivan Koychev, Preslav Nakov:
Recursive Style Breach Detection with Multifaceted Ensemble Learning. AIMSA 2018: 126-137
[c30]
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Dimitrina Zlatkova, Daniel Kopev, Kristiyan Mitov, Atanas Atanasov, Momchil Hardalov, Ivan Koychev, Preslav Nakov:
An Ensemble-Rich Multi-Aspect Approach Towards Robust Style Change Detection: Notebook for PAN at CLEF 2018. CLEF (Working Notes) 2018
[c29]
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Daniel Kopev, Atanas Atanasov, Dimitrina Zlatkova, Momchil Hardalov, Ivan Koychev, Ivelina Nikolova, Galia Angelova:
Tweety at SemEval-2018 Task 2: Predicting Emojis using Hierarchical Attention Neural Networks and Support Vector Machine. SemEval@NAACL-HLT 2018: 497-501
[i7]
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  - journals/corr/abs-1803-03786
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Georgi Karadzhov, Pepa Gencheva, Preslav Nakov, Ivan Koychev:
We Built a Fake News & Click-bait Filter: What Happened Next Will Blow Your Mind! CoRR abs/1803.03786 (2018)
[i6]
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  - journals/corr/abs-1809-00303
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Momchil Hardalov, Ivan Koychev, Preslav Nakov:
Towards Automated Customer Support. CoRR abs/1809.00303 (2018)
2017
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Georgi Karadzhov, Tsvetomila Mihaylova, Yasen Kiprov, Georgi Georgiev, Ivan Koychev, Preslav Nakov:
The Case for Being Average: A Mediocrity Approach to Style Masking and Author Obfuscation - (Best of the Labs Track at CLEF-2017). CLEF 2017: 173-185
[c27]
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Martin Boyanov, Preslav Nakov, Alessandro Moschitti, Giovanni Da San Martino, Ivan Koychev:
Building Chatbots from Forum Data: Model Selection Using Question Answering Metrics. RANLP 2017: 121-129
[c26]
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Pepa Gencheva, Preslav Nakov, Lluís Màrquez, Alberto Barrón-Cedeño, Ivan Koychev:
A Context-Aware Approach for Detecting Worth-Checking Claims in Political Debates. RANLP 2017: 267-276
[c25]
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Georgi Karadzhov, Pepa Gencheva, Preslav Nakov, Ivan Koychev:
We Built a Fake News / Click Bait Filter: What Happened Next Will Blow Your Mind! RANLP 2017: 334-343
[c24]
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Georgi Karadzhov, Preslav Nakov, Lluís Màrquez, Alberto Barrón-Cedeño, Ivan Koychev:
Fully Automated Fact Checking Using External Sources. RANLP 2017: 344-353
[c23]
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Preslav Nakov, Tsvetomila Mihaylova, Lluís Màrquez, Yashkumar Shiroya, Ivan Koychev:
Do Not Trust the Trolls: Predicting Credibility in Community Question Answering Forums. RANLP 2017: 551-560
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Todor Mihaylov, Daniel Balchev, Yasen Kiprov, Ivan Koychev, Preslav Nakov:
Large-Scale Goodness Polarity Lexicons for Community Question Answering. SIGIR 2017: 1185-1188
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Yasen Kiprov, Pepa Gencheva, Ivan Koychev:
Generating Labeled Datasets of Twitter Users. UMAP (Adjunct Publication) 2017: 191-196
[i5]
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Georgi Karadjov, Tsvetomila Mihaylova, Yasen Kiprov, Georgi Georgiev, Ivan Koychev, Preslav Nakov:
The Case for Being Average: A Mediocrity Approach to Style Masking and Author Obfuscation. CoRR abs/1707.03736 (2017)
[i4]
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Todor Mihaylov, Daniel Balchev, Yasen Kiprov, Ivan Koychev, Preslav Nakov:
Large-Scale Goodness Polarity Lexicons for Community Question Answering. CoRR abs/1707.06378 (2017)
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  - journals/corr/abs-1710-00341
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Georgi Karadzhov, Preslav Nakov, Lluís Màrquez, Alberto Barrón-Cedeño, Ivan Koychev:
Fully Automated Fact Checking Using External Sources. CoRR abs/1710.00341 (2017)
[i2]
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  - journals/corr/abs-1710-00689
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Martin Boyanov, Ivan Koychev, Preslav Nakov, Alessandro Moschitti, Giovanni Da San Martino:
Building Chatbots from Forum Data: Model Selection Using Question Answering Metrics. CoRR abs/1710.00689 (2017)
[i1]
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  - journals/corr/abs-1712-08350
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Valentin Zmiycharov, Dimitar Alexandrov, Preslav Nakov, Ivan Koychev, Yasen Kiprov:
Finding People's Professions and Nationalities Using Distant Supervision - The FMI@SU "goosefoot" team at the WSDM Cup 2017 Triple Scoring Task. CoRR abs/1712.08350 (2017)
2016
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Momchil Hardalov, Ivan Koychev, Preslav Nakov:
In Search of Credible News. AIMSA 2016: 172-180
[c19]
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Pepa Gencheva, Martin Boyanov, Elena Deneva, Preslav Nakov, Georgi Georgiev, Yasen Kiprov, Ivan Koychev:
PANcakes Team: A Composite System of Domain-Agnostic Features For Author Profiling. CLEF (Working Notes) 2016: 874-880
[c18]
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Tsvetomila Mihaylova, Georgi Karadjov, Yasen Kiprov, Georgi Georgiev, Ivan Koychev, Preslav Nakov:
SU@PAN'2016: Author Obfuscation. CLEF (Working Notes) 2016: 956-969
[c17]
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Valentin Zmiycharov, Dimitar Alexandrov, Hristo Georgiev, Yasen Kiprov, Georgi Georgiev, Ivan Koychev, Preslav Nakov:
Experiments in Authorship-Link Ranking and Complete Author Clustering. CLEF (Working Notes) 2016: 1018-1023
[c16]
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Tsvetomila Mihaylova, Pepa Gencheva, Martin Boyanov, Ivana Yovcheva, Todor Mihaylov, Momchil Hardalov, Yasen Kiprov, Daniel Balchev, Ivan Koychev, Preslav Nakov, Ivelina Nikolova, Galia Angelova:
SUper Team at SemEval-2016 Task 3: Building a Feature-Rich System for Community Question Answering. SemEval@NAACL-HLT 2016: 836-843
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Daniel Balchev, Yasen Kiprov, Ivan Koychev, Preslav Nakov:
PMI-cool at SemEval-2016 Task 3: Experiments with PMI and Goodness Polarity Lexicons for Community Question Answering. SemEval@NAACL-HLT 2016: 844-850
2015
[c14]
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Yasen Kiprov, Momchil Hardalov, Preslav Nakov, Ivan Koychev:
SU@PAN'2015: Experiments in Author Profiling. CLEF (Working Notes) 2015
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Gergana Angelova Lazarova, Ivan Koychev:
Semi-supervised Multi-view Sentiment Analysis. ICCCI (1) 2015: 181-190
[c12]
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Todor Mihaylov, Ivan Koychev, Georgi Georgiev, Preslav Nakov:
Exposing Paid Opinion Manipulation Trolls. RANLP 2015: 443-450
2014
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Milen Chechev, Ivan Koychev:
Social News Feed Recommender. AIMSA 2014: 37-46
[c10]
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Boris Velichkov, Borislav Kapukaranov, Ivan Grozev, Jeni Karanesheva, Todor Mihaylov, Yasen Kiprov, Preslav Nakov, Ivan Koychev, Georgi Georgiev:
SU-FMI: System Description for SemEval-2014 Task 9 on Sentiment Analysis in Twitter. SemEval@COLING 2014: 590-595
2012
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Boris Kraychev, Ivan Koychev:
Computationally effective algorithm for information extraction and online review mining. WIMS 2012: 64:1-64:4

2000 – 2009

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2005
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Nirmalie Wiratunga, Robert Lothian, Sutanu Chakraborti, Ivan Koychev:
Textual Feature Construction from Keywords. ICCBR Workshops 2005: 110-119
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Nirmalie Wiratunga, Robert Lothian, Sutanu Chakraborti, Ivan Koychev:
A Propositional Approach to Textual Case Indexing. PKDD 2005: 380-391
[c6]
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  - conf/sgai/KoychevL05
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Ivan Koychev, Robert Lothian:
Tracking Drifting Concepts by Time Window Optimisation. SGAI Conf. 2005: 46-59
2004
[j1]
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David J. Harper, Ivan Koychev, Yixing Sun, Iain Pirie:
Within-Document Retrieval: A User-Centred Evaluation of Relevance Profiling. Inf. Retr. 7(3-4): 265-290 (2004)
[c5]
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Nirmalie Wiratunga, Ivan Koychev, Stewart Massie:
Feature Selection and Generalisation for Retrieval of Textual Cases. ECCBR 2004: 806-820
[c4]
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  - electronic edition @ nist.gov (open access)
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  - conf/trec/HarperMLKWW04
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David J. Harper, Gheorghe Muresan, Bicheng Liu, Ivan Koychev, Dietrich Wettschereck, Nirmalie Wiratunga:
The Robert Gordon University's HARD Track Experiments at TREC 2004. TREC 2004
2003
[c3]
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  - conf/ecir/HarperKY03
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David J. Harper, Ivan Koychev, Yixing Sun:
Query-Based Document Skimming: A User-Centred Evaluation of Relevance Profiling. ECIR 2003: 377-392
2002
[c2]
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  - conf/ah/Koychev02
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Ivan Koychev:
Tracking Changing User Interests through Prior-Learning of Context. AH 2002: 223-232
2000
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  - conf/iui/SchwabPK00
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Ingo Schwab, Wolfgang Pohl, Ivan Koychev:
Learning to recommend from positive evidence. IUI 2000: 241-247

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