Ivan Koychev

121 papers A* 1A 3B 1C 3Misc 23Journal 43Unranked 45
YearRankTypeTitle / Venue / Authors
2026 — conf
ImageCLEF 2026: Multimodal Challenges in Medicine, Science, Agritech, and Security.
ECIR (4)
Bogdan Ionescu, Henning Müller, Dan-Cristian Stanciu, Ahmedkhan Radzhabov, Alba García Seco de Herrera, Alexandra-Georgiana Andrei, Alexandra Baicoianu, Ana Neacsu, Andrea M. Storås, Asma Ben Abacha, Benjamin Bracke, Lea Reinartz, Benjamin Lecouteux, Christoph M. Friedrich, Cynthia Sabrina Schmidt, Corneliu Florea, Diandra Fabre, Didier Schwab, Dimitar Dimitrov, Emmanuelle Esperança-Rodier, Mihai Gabriel Constantin, Hendrik Damm, Henning Schäfer, Ivan Koychev, Josiane Mothe, Liviu-Daniel Stefan, Maja J. Hjuler, Mehmet Kurt, Meliha Yetisgen, Michael A. Riegler, Mihai Dogariu, Mihai Ivanovici, Ming Shan Hee, Mohammad El Sakka, Momina Ahsan, Obioma Pelka, Pål Halvorsen, Preslav Nakov, Raphael Brüngel, Sarfraz Ahmad, Steven Alexander Hicks, Sushant Gautam, Tabea Margareta Grace Pakull, Bahadir Eryilmaz, Vajira Thambawita, Vassili Kovalev, Wen-Wai Yim, Yuri Prokopchuk, Zhuohan Xie
2026 — conf
The CLEF-2026 FinMMEval Lab: Multilingual and Multimodal Evaluation of Financial AI Systems.
ECIR (4)
Zhuohan Xie, Rania Elbadry, Fan Zhang, Georgi Georgiev, Xueqing Peng, Lingfei Qian, Jimin Huang, Dimitar Dimitrov, Vanshikaa Jani, Yuyang Dai, Jiahui Geng, Yuxia Wang, Ivan Koychev, Veselin Stoyanov, Preslav Nakov
2026 J jnl
The CLEF-2026 FinMMEval Lab: Multilingual and Multimodal Evaluation of Financial AI Systems.
CoRR
Zhuohan Xie, Rania Elbadry, Fan Zhang, Georgi Georgiev, Xueqing Peng, Lingfei Qian, Jimin Huang, Dimitar Dimitrov, Vanshikaa Jani, Yuyang Dai, Jiahui Geng, Yuxia Wang, Ivan Koychev, Veselin Stoyanov, Preslav Nakov
2025 — conf
ContextDrift at ImageCLEF 2025 Multimodal Reasoning: Evaluating VLMs' Multimodal, Multilingual and Multidomain Reasoning Capabilities via Thinking Budget Variations and Textual Augmentation.
CLEF (Working Notes)
Vasilena T. Krazheva, Diana Markova, Dimitar Dimitrov, Ivan Koychev, Preslav Nakov
2025 Misc conf
ExPe: Exact Positional Encodings for Generative Transformer Models with Extrapolating Capabilities.
RANLP
Aleksis Datseris, Sylvia Vassileva, Ivan Koychev, Svetla Boytcheva
2025 J jnl
ExPe: Exact Positional Encodings for Generative Transformer Models with Extrapolating Capabilities.
CoRR
Aleksis Datseris, Sylvia Vassileva, Ivan Koychev, Svetla Boytcheva
2025 J jnl
FinChain: A Symbolic Benchmark for Verifiable Chain-of-Thought Financial Reasoning.
CoRR
Zhuohan Xie, Dhruv Sahnan, Debopriyo Banerjee, Georgi Georgiev, Rushil Thareja, Hachem Madmoun, Jinyan Su, Aaryamonvikram Singh, Yuxia Wang, Rui Xing, Fajri Koto, Haonan Li, Ivan Koychev, Tanmoy Chakraborty, Salem Lahlou, Veselin Stoyanov, Preslav Nakov
2025 — conf
ImageCLEF 2025: Multimedia Retrieval in Medical, Social Media and Content Recommendation Applications.
ECIR (5)
Bogdan Ionescu, Henning Müller, Dan-Cristian Stanciu, Ahmad Idrissi-Yaghir, Ahmedkhan Radzhabov, Alba García Seco de Herrera, Alexandra Andrei, Andrea M. Storås, Asma Ben Abacha, Benjamin Bracke, Benjamin Lecouteux, Benno Stein, Cécile Macaire, Christoph M. Friedrich, Cynthia Sabrina Schmidt, Diandra Fabre, Didier Schwab, Dimitar Dimitrov, Emmanuelle Esperança-Rodier, Mihai Gabriel Constantin, Helmut Becker, Hendrik Damm, Henning Schäfer, Ivan Rodkin, Ivan Koychev, Johannes Kiesel, Johannes Rückert, Josep Malvehy, Liviu-Daniel Stefan, Louise Bloch, Martin Potthast, Maximilian Heinrich, Michael A. Riegler, Mihai Dogariu, Noel Codella, Pål Halvorsen, Preslav Nakov, Raphael Brüngel, Roberto A. Novoa, Rocktim Jyoti Das, Steven Alexander Hicks, Sushant Gautam, Tabea Margareta Grace Pakull, Vajira Thambawita, Vassili Kovalev, Wen-Wai Yim, Zhuohan Xie
2025 — conf
Overview of ImageCLEF 2025 - Multimodal Reasoning.
CLEF (Working Notes)
Dimitar Dimitrov, Ming Shan Hee, Zhuohan Xie, Rocktim Jyoti Das, Momina Ahsan, Sarfraz Ahmad, Nikolay Paev, Ivan Koychev, Preslav Nakov
2025 — conf
Overview of ImageCLEF 2025: Multimedia Retrieval in Medical, Social Media and Content Recommendation Applications.
CLEF
Bogdan Ionescu, Henning Müller, Dan-Cristian Stanciu, Alexandra-Georgiana Andrei, Ahmedkhan Radzhabov, Yuri Prokopchuk, Liviu-Daniel Stefan, Mihai Gabriel Constantin, Mihai Dogariu, Vassili Kovalev, Hendrik Damm, Johannes Rückert, Asma Ben Abacha, Alba Garcia Seco de Herrera, Christoph M. Friedrich, Louise Bloch, Raphael Brüngel, Ahmad Idrissi-Yaghir, Henning Schäfer, Cynthia Sabrina Schmidt, Tabea Margareta Grace Pakull, Benjamin Bracke, Obioma Pelka, Bahadir Eryilmaz, Helmut Becker, Wen-Wai Yim, Noel Codella, Roberto A. Novoa, Josep Malvehy, Dimitar Dimitrov, Rocktim Jyoti Das, Zhuohan Xie, Ming Shan Hee, Preslav Nakov, Ivan Koychev, Steven Alexander Hicks, Sushant Gautam, Michael A. Riegler, Vajira Thambawita, Pål Halvorsen, Diandra Fabre, Cécile Macaire, Benjamin Lecouteux, Didier Schwab, Martin Potthast, Maximilian Heinrich, Johannes Kiesel, Moritz Wolter, Sharat Anand, Benno Stein
2025 J jnl
Post-ocr text correction for Bulgarian historical documents.
Int. J. Digit. Libr.
Angel Beshirov, Milena Dobreva, Dimitar Dimitrov, Momchil Hardalov, Ivan Koychev, Preslav Nakov
2025 J jnl
SynthMedic: Utilizing large language models for synthetic discharge summary generation, correction and validation.
J. Biomed. Informatics
Georgi Grazhdanski, Vasil Vasilev, Sylvia Vassileva, Dimitar Taskov, Izabel Antova, Ivan Koychev, Svetla Boytcheva
2025 Misc conf
Using LLMs for Multilingual Clinical Entity Linking to ICD-10.
RANLP
Sylvia Vassileva, Ivan Koychev, Svetla Boytcheva
2025 J jnl
Using LLMs for Multilingual Clinical Entity Linking to ICD-10.
CoRR
Sylvia Vassileva, Ivan Koychev, Svetla Boytcheva
2025 — conf
Zero-Shot Reasoning with BLIP and SmolLM.
CLEF (Working Notes)
Elena Tosheva, Dimitar Dimitrov, Ivan Koychev, Preslav Nakov
2024 Misc conf
Detecting Check-Worthy Claims in Political Debates, Speeches, and Interviews Using Audio Data.
ICASSP
Petar Ivanov, Ivan Koychev, Momchil Hardalov, Preslav Nakov
2024 — conf
EXAMS-V: A Multi-Discipline Multilingual Multimodal Exam Benchmark for Evaluating Vision Language Models.
ACL (1)
Rocktim Jyoti Das, Simeon Emilov Hristov, Haonan Li, Dimitar Dimitrov, Ivan Koychev, Preslav Nakov
2024 J jnl
EXAMS-V: A Multi-Discipline Multilingual Multimodal Exam Benchmark for Evaluating Vision Language Models.
CoRR
Rocktim Jyoti Das, Simeon Emilov Hristov, Haonan Li, Dimitar Iliyanov Dimitrov, Ivan Koychev, Preslav Nakov
2024 C conf
FedDyS: Enhancing Federated Learning Efficiency with Dynamic Sample Selection.
ISCC
Ensiye Kiyamousavi, Boris Kraychev, Ivan Koychev
2024 — conf
Mirela at CheckThat! 2024: Check-worthiness of Tweets with Multilingual Embeddings and Adversarial Training.
CLEF (Working Notes)
Mirela Dryankova, Dimitar Dimitrov, Ivan Koychev, Preslav Nakov
2024 Misc conf
Multimodal Sentiment Analysis: Recognizing Sentiment in Memes.
AIMSA
Georgi Vankov, Dimitar Dimitrov, Ivan Koychev, Preslav Nakov
2024 — conf
Overview of the CLEF-2024 CheckThat! Lab Task 2 on Subjectivity in News Articles.
CLEF (Working Notes)
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
2024 — conf
Overview of the CLEF-2024 CheckThat! Lab Task 3 on Persuasion Techniques.
CLEF (Working Notes)
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
2024 J jnl
Post-OCR Text Correction for Bulgarian Historical Documents.
CoRR
Angel Beshirov, Milena Dobreva, Dimitar Dimitrov, Momchil Hardalov, Ivan Koychev, Preslav Nakov
2024 J jnl
Transformer-based approach for symptom recognition and multilingual linking.
Database J. Biol. Databases Curation
Sylvia Vassileva, Georgi Grazhdanski, Ivan Koychev, Svetla Boytcheva
2023 J jnl
Augmented reality versus standard tests to assess cognition and function in early Alzheimer's disease.
npj Digit. Medicine
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
2023 J jnl
Detecting Check-Worthy Claims in Political Debates, Speeches, and Interviews Using Audio Data.
CoRR
Petar Ivanov, Ivan Koychev, Momchil Hardalov, Preslav Nakov
2023 J jnl
DuoSearch: A Novel Search Engine for Bulgarian Historical Documents.
CoRR
Angel Beshirov, Suzan Hadzhieva, Ivan Koychev, Milena Dobreva
2023 Misc conf
Enriched Pre-trained Transformers for Joint Slot Filling and Intent Detection.
RANLP
Momchil Hardalov, Ivan Koychev, Preslav Nakov
2023 — conf
FMI-SU at SemEval-2023 Task 7: Two-level Entailment Classification of Clinical Trials Enhanced by Contextual Data Augmentation.
SemEval@ACL
Sylvia Vassileva, Georgi Grazhdanski, Svetla Boytcheva, Ivan Koychev
2023 Misc conf
FedGrid: Federated Model Aggregation via Grid Shifting.
UCC
Boris Kraychev, Ensiye Kiyamousavi, Ivan Koychev
2023 B conf
FedSym: Unleashing the Power of Entropy for Benchmarking the Algorithms for Federated Learning.
IEEE Big Data
Ensiye Kiyamousavi, Boris Kraychev, Ivan Koychev
2023 J jnl
FedSym: Unleashing the Power of Entropy for Benchmarking the Algorithms for Federated Learning.
CoRR
Ensiye Kiyamousavi, Boris Kraychev, Ivan Koychev
2023 — conf
Fusion @ BioASQ MedProcNER: Transformer-based Approach for Procedure Recognition and Linking in Spanish Clinical Text.
CLEF (Working Notes)
Sylvia Vassileva, Georgi Grazhdanski, Svetla Boytcheva, Ivan Koychev
2023 J jnl
Gpachov at CheckThat! 2023: A Diverse Multi-Approach Ensemble for Subjectivity Detection in News Articles.
CoRR
Georgi Pachov, Dimitar Dimitrov, Ivan Koychev, Preslav Nakov
2023 — conf
Gpachov at CheckThat!-2023: A Diverse Multi-approach Ensemble for Subjectivity Detection in News Articles.
CLEF (Working Notes)
Georgi Pachov, Dimitar Dimitrov, Ivan Koychev, Preslav Nakov
2023 Misc conf
Looking for Traces of Textual Deepfakes in Bulgarian on Social Media.
RANLP
Irina Temnikova, Iva Marinova, Silvia Gargova, Ruslana Margova, Ivan Koychev
2023 — ed.
Proceedings of the 15th International Conference Education and Research in the Information Society, Plovdiv, Bulgaria, October 13 - 14, 2022.
ERIS
Avram Eskenazi, George Totkov, Ivan Koychev
2023 — conf
bgGLUE: A Bulgarian General Language Understanding Evaluation Benchmark.
ACL (1)
Momchil Hardalov, Pepa Atanasova, Todor Mihaylov, Galia Angelova, Kiril Simov, Petya Osenova, Veselin Stoyanov, Ivan Koychev, Preslav Nakov, Dragomir Radev
2023 J jnl
bgGLUE: A Bulgarian General Language Understanding Evaluation Benchmark.
CoRR
Momchil Hardalov, Pepa Atanasova, Todor Mihaylov, Galia Angelova, Kiril Simov, Petya Osenova, Ves Stoyanov, Ivan Koychev, Preslav Nakov, Dragomir Radev
2022 — conf
CrowdChecked: Detecting Previously Fact-Checked Claims in Social Media.
AACL/IJCNLP (1)
Momchil Hardalov, Anton Chernyavskiy, Ivan Koychev, Dmitry Ilvovsky, Preslav Nakov
2022 J jnl
CrowdChecked: Detecting Previously Fact-Checked Claims in Social Media.
CoRR
Momchil Hardalov, Anton Chernyavskiy, Ivan Koychev, Dmitry Ilvovsky, Preslav Nakov
2022 — conf
DuoSearch: A Novel Search Engine for Bulgarian Historical Documents.
ECIR (2)
Angel Beshirov, Suzan Hadzhieva, Ivan Koychev, Milena Dobreva
2022 — conf
Leaf: Multiple-Choice Question Generation.
ECIR (2)
Kristiyan Vachev, Momchil Hardalov, Georgi Karadzhov, Georgi Georgiev, Ivan Koychev, Preslav Nakov
2022 J jnl
Leaf: Multiple-Choice Question Generation.
CoRR
Kristiyan Vachev, Momchil Hardalov, Georgi Karadzhov, Georgi Georgiev, Ivan Koychev, Preslav Nakov
2022 — conf
StructExtSum - Bulgarian Legislation Text Extractive Summarization by Structure Understanding.
ERIS
Valentin Zmiycharov, Gergana Angelova Lazarova, Todor Tsonkov, Ivan Koychev
2022 — conf
Tool for Automatic Annotation of Clinical Texts in Bulgarian - BGMedAnno.
ISGT
Sylvia Vassileva, Svetla Boytcheva, Ivan Koychev
2021 — conf
A Comparative Study of Extractive and Abstractive Approaches for Automatic Text Summarization on Scientific Texts.
ERIS
Todor Tsonkov, Gergana Angelova Lazarova, Valentin Zmiycharov, Ivan Koychev
2021 Misc conf
A Comparative Study on Abstractive and Extractive Approaches in Summarization of European Legislation Documents.
RANLP
Valentin Zmiycharov, Milen Chechev, Gergana Angelova Lazarova, Todor Tsonkov, Ivan Koychev
2021 Misc conf
Comparative Analysis of Fine-tuned Deep Learning Language Models for ICD-10 Classification Task for Bulgarian Language.
RANLP
Boris Velichkov, Sylvia Vassileva, Simeon Gerginov, Boris Kraychev, Ivaylo Ivanov, Philip Ivanov, Ivan Koychev, Svetla Boytcheva
2021 J jnl
Exposing Paid Opinion Manipulation Trolls.
CoRR
Todor Mihaylov, Ivan Koychev, Georgi Georgiev, Preslav Nakov
2021 J jnl
Generating Answer Candidates for Quizzes and Answer-Aware Question Generators.
CoRR
Kristiyan Vachev, Momchil Hardalov, Georgi Karadzhov, Georgi Georgiev, Ivan Koychev, Preslav Nakov
2021 J jnl
Predicting the Factuality of Reporting of News Media Using Observations About User Attention in Their YouTube Channels.
CoRR
Krasimira Bozhanova, Yoan Dinkov, Ivan Koychev, Maria Castaldo, Tommaso Venturini, Preslav Nakov
2021 Misc conf
Predicting the Factuality of Reporting of News Media Using Observations about User Attention in Their YouTube Channels.
RANLP
Krasimira Bozhanova, Yoan Dinkov, Ivan Koychev, Maria Castaldo, Tommaso Venturini, Preslav Nakov
2021 — ed.
Proceedings of the 14th International Conference Education and Research in the Information Society, ERIS 2021, Plovdiv, Bulgaria, September 27-28, 2021
ERIS
Avram Eskenazi, George Totkov, Ivan Koychev, Krassimira Ivanova
2021 J jnl
SUper Team at SemEval-2016 Task 3: Building a feature-rich system for community question answering.
CoRR
Tsvetomila Mihaylova, Pepa Gencheva, Martin Boyanov, Ivana Yovcheva, Todor Mihaylov, Momchil Hardalov, Yasen Kiprov, Daniel Balchev, Ivan Koychev, Preslav Nakov, Ivelina Nikolova, Galia Angelova
2020 — conf
AI-driven Approach for Automatic Synthetic Patient Status Corpus Generation.
AIVR
Boris Velichkov, Kristina Ivanova, Valeri Hristov, Ivan I. Borisov, Alexander Peychev, Ivan Koychev, Svetla Boytcheva
2020 C conf
Automatic Generation of Annotated Corpora of Diagnoses with ICD-10 codes based on Open Data and Linked Open Data.
FedCSIS
Svetla Boytcheva, Boris Velichkov, Gerasim Velchev, Ivan Koychev
2020 — conf
Cascading Approach for Automatic ICD-10 Codes Association To Diseases in Bulgarian.
BioInfoMed
Boris Velichkov, Simeon Gerginov, Panayot Panayotov, Sylvia Vassileva, Gerasim Velchev, Ivan Koychev, Svetla Boytcheva
2020 J jnl
EXAMS: A Multi-Subject High School Examinations Dataset for Cross-Lingual and Multilingual Question Answering.
CoRR
Momchil Hardalov, Todor Mihaylov, Dimitrina Zlatkova, Yoan Dinkov, Ivan Koychev, Preslav Nakov
2020 — conf
EXAMS: A Multi-subject High School Examinations Dataset for Cross-lingual and Multilingual Question Answering.
EMNLP (1)
Momchil Hardalov, Todor Mihaylov, Dimitrina Zlatkova, Yoan Dinkov, Ivan Koychev, Preslav Nakov
2020 J jnl
Enriched Pre-trained Transformers for Joint Slot Filling and Intent Detection.
CoRR
Momchil Hardalov, Ivan Koychev, Preslav Nakov
2020 J jnl
Team Alex at CLEF CheckThat! 2020: Identifying Check-Worthy Tweets With Transformer Models.
CoRR
Alex Nikolov, Giovanni Da San Martino, Ivan Koychev, Preslav Nakov
2020 — conf
Team Alex at CLEF CheckThat! 2020: Identifying Check-Worthy Tweets With Transformer Models.
CLEF (Working Notes)
Alex Nikolov, Giovanni Da San Martino, Ivan Koychev, Preslav Nakov
2019 J jnl
A Context-Aware Approach for Detecting Check-Worthy Claims in Political Debates.
CoRR
Pepa Gencheva, Ivan Koychev, Lluís Màrquez, Alberto Barrón-Cedeño, Preslav Nakov
2019 Misc conf
Beyond English-Only Reading Comprehension: Experiments in Zero-shot Multilingual Transfer for Bulgarian.
RANLP
Momchil Hardalov, Ivan Koychev, Preslav Nakov
2019 J jnl
Beyond English-only Reading Comprehension: Experiments in Zero-Shot Multilingual Transfer for Bulgarian.
CoRR
Momchil Hardalov, Ivan Koychev, Preslav Nakov
2019 Misc conf
Deep learning contextual models for prediction of sport event outcome from sportsman's interviews.
RANLP
Boris Velichkov, Ivan Koychev, Svetla Boytcheva
2019 C conf
Detecting Deception in Political Debates Using Acoustic and Textual Features.
ASRU
Daniel Kopev, Ahmed Ali, Ivan Koychev, Preslav Nakov
2019 J jnl
Detecting Deception in Political Debates Using Acoustic and Textual Features.
CoRR
Daniel Kopev, Ahmed Ali, Ivan Koychev, Preslav Nakov
2019 Misc conf
Detecting Toxicity in News Articles: Application to Bulgarian.
RANLP
Yoan Dinkov, Ivan Koychev, Preslav Nakov
2019 J jnl
Detecting Toxicity in News Articles: Application to Bulgarian.
CoRR
Yoan Dinkov, Ivan Koychev, Preslav Nakov
2019 — conf
Fact-Checking Meets Fauxtography: Verifying Claims About Images.
EMNLP/IJCNLP (1)
Dimitrina Zlatkova, Preslav Nakov, Ivan Koychev
2019 J jnl
Fact-Checking Meets Fauxtography: Verifying Claims About Images.
CoRR
Dimitrina Zlatkova, Preslav Nakov, Ivan Koychev
2019 J jnl
In Search of Credible News.
CoRR
Momchil Hardalov, Ivan Koychev, Preslav Nakov
2019 J jnl
Machine Reading Comprehension for Answer Re-Ranking in Customer Support Chatbots.
CoRR
Momchil Hardalov, Ivan Koychev, Preslav Nakov
2019 J jnl
Machine Reading Comprehension for Answer Re-Ranking in Customer Support Chatbots.
Inf.
Momchil Hardalov, Ivan Koychev, Preslav Nakov
2019 A conf
Predicting the Leading Political Ideology of YouTube Channels Using Acoustic, Textual, and Metadata Information.
INTERSPEECH
Yoan Dinkov, Ahmed Ali, Ivan Koychev, Preslav Nakov
2019 J jnl
Predicting the Leading Political Ideology of YouTube Channels Using Acoustic, Textual, and Metadata Information.
CoRR
Yoan Dinkov, Ahmed Ali, Ivan Koychev, Preslav Nakov
2019 J jnl
Recursive Style Breach Detection with Multifaceted Ensemble Learning.
CoRR
Daniel Kopev, Dimitrina Zlatkova, Kristiyan Mitov, Atanas Atanasov, Momchil Hardalov, Ivan Koychev, Preslav Nakov
2018 — conf
An Ensemble-Rich Multi-Aspect Approach Towards Robust Style Change Detection: Notebook for PAN at CLEF 2018.
CLEF (Working Notes)
Dimitrina Zlatkova, Daniel Kopev, Kristiyan Mitov, Atanas Atanasov, Momchil Hardalov, Ivan Koychev, Preslav Nakov
2018 Misc conf
Recursive Style Breach Detection with Multifaceted Ensemble Learning.
AIMSA
Daniel Kopev, Dimitrina Zlatkova, Kristiyan Mitov, Atanas Atanasov, Momchil Hardalov, Ivan Koychev, Preslav Nakov
2018 J jnl
The dark side of news community forums: opinion manipulation trolls.
Internet Res.
Todor Mihaylov, Tsvetomila Mihaylova, Preslav Nakov, Lluís Màrquez, Georgi Georgiev, Ivan Koychev
2018 Misc conf
Towards Automated Customer Support.
AIMSA
Momchil Hardalov, Ivan Koychev, Preslav Nakov
2018 J jnl
Towards Automated Customer Support.
CoRR
Momchil Hardalov, Ivan Koychev, Preslav Nakov
2018 — conf
Tweety at SemEval-2018 Task 2: Predicting Emojis using Hierarchical Attention Neural Networks and Support Vector Machine.
SemEval@NAACL-HLT
Daniel Kopev, Atanas Atanasov, Dimitrina Zlatkova, Momchil Hardalov, Ivan Koychev, Ivelina Nikolova, Galia Angelova
2018 J jnl
We Built a Fake News & Click-bait Filter: What Happened Next Will Blow Your Mind!
CoRR
Georgi Karadzhov, Pepa Gencheva, Preslav Nakov, Ivan Koychev
2017 Misc conf
A Context-Aware Approach for Detecting Worth-Checking Claims in Political Debates.
RANLP
Pepa Gencheva, Preslav Nakov, Lluís Màrquez, Alberto Barrón-Cedeño, Ivan Koychev
2017 Misc conf
Building Chatbots from Forum Data: Model Selection Using Question Answering Metrics.
RANLP
Martin Boyanov, Preslav Nakov, Alessandro Moschitti, Giovanni Da San Martino, Ivan Koychev
2017 J jnl
Building Chatbots from Forum Data: Model Selection Using Question Answering Metrics.
CoRR
Martin Boyanov, Ivan Koychev, Preslav Nakov, Alessandro Moschitti, Giovanni Da San Martino
2017 Misc conf
Do Not Trust the Trolls: Predicting Credibility in Community Question Answering Forums.
RANLP
Preslav Nakov, Tsvetomila Mihaylova, Lluís Màrquez, Yashkumar Shiroya, Ivan Koychev
2017 J jnl
Finding People's Professions and Nationalities Using Distant Supervision - The FMI@SU "goosefoot" team at the WSDM Cup 2017 Triple Scoring Task.
CoRR
Valentin Zmiycharov, Dimitar Alexandrov, Preslav Nakov, Ivan Koychev, Yasen Kiprov
2017 Misc conf
Fully Automated Fact Checking Using External Sources.
RANLP
Georgi Karadzhov, Preslav Nakov, Lluís Màrquez, Alberto Barrón-Cedeño, Ivan Koychev
2017 J jnl
Fully Automated Fact Checking Using External Sources.
CoRR
Georgi Karadzhov, Preslav Nakov, Lluís Màrquez, Alberto Barrón-Cedeño, Ivan Koychev
2017 — conf
Generating Labeled Datasets of Twitter Users.
UMAP (Adjunct Publication)
Yasen Kiprov, Pepa Gencheva, Ivan Koychev
2017 A* conf
Large-Scale Goodness Polarity Lexicons for Community Question Answering.
SIGIR
Todor Mihaylov, Daniel Balchev, Yasen Kiprov, Ivan Koychev, Preslav Nakov
2017 J jnl
Large-Scale Goodness Polarity Lexicons for Community Question Answering.
CoRR
Todor Mihaylov, Daniel Balchev, Yasen Kiprov, Ivan Koychev, Preslav Nakov
2017 — conf
The Case for Being Average: A Mediocrity Approach to Style Masking and Author Obfuscation - (Best of the Labs Track at CLEF-2017).
CLEF
Georgi Karadzhov, Tsvetomila Mihaylova, Yasen Kiprov, Georgi Georgiev, Ivan Koychev, Preslav Nakov
2017 J jnl
The Case for Being Average: A Mediocrity Approach to Style Masking and Author Obfuscation.
CoRR
Georgi Karadjov, Tsvetomila Mihaylova, Yasen Kiprov, Georgi Georgiev, Ivan Koychev, Preslav Nakov
2017 Misc conf
We Built a Fake News / Click Bait Filter: What Happened Next Will Blow Your Mind!
RANLP
Georgi Karadzhov, Pepa Gencheva, Preslav Nakov, Ivan Koychev
2016 — conf
Experiments in Authorship-Link Ranking and Complete Author Clustering.
CLEF (Working Notes)
Valentin Zmiycharov, Dimitar Alexandrov, Hristo Georgiev, Yasen Kiprov, Georgi Georgiev, Ivan Koychev, Preslav Nakov
2016 Misc conf
In Search of Credible News.
AIMSA
Momchil Hardalov, Ivan Koychev, Preslav Nakov
2016 — conf
PANcakes Team: A Composite System of Domain-Agnostic Features For Author Profiling.
CLEF (Working Notes)
Pepa Gencheva, Martin Boyanov, Elena Deneva, Preslav Nakov, Georgi Georgiev, Yasen Kiprov, Ivan Koychev
2016 — conf
PMI-cool at SemEval-2016 Task 3: Experiments with PMI and Goodness Polarity Lexicons for Community Question Answering.
SemEval@NAACL-HLT
Daniel Balchev, Yasen Kiprov, Ivan Koychev, Preslav Nakov
2016 — conf
SU@PAN'2016: Author Obfuscation.
CLEF (Working Notes)
Tsvetomila Mihaylova, Georgi Karadjov, Yasen Kiprov, Georgi Georgiev, Ivan Koychev, Preslav Nakov
2016 — conf
SUper Team at SemEval-2016 Task 3: Building a Feature-Rich System for Community Question Answering.
SemEval@NAACL-HLT
Tsvetomila Mihaylova, Pepa Gencheva, Martin Boyanov, Ivana Yovcheva, Todor Mihaylov, Momchil Hardalov, Yasen Kiprov, Daniel Balchev, Ivan Koychev, Preslav Nakov, Ivelina Nikolova, Galia Angelova
2015 Misc conf
Exposing Paid Opinion Manipulation Trolls.
RANLP
Todor Mihaylov, Ivan Koychev, Georgi Georgiev, Preslav Nakov
2015 — conf
SU@PAN'2015: Experiments in Author Profiling.
CLEF (Working Notes)
Yasen Kiprov, Momchil Hardalov, Preslav Nakov, Ivan Koychev
2015 — conf
Semi-supervised Multi-view Sentiment Analysis.
ICCCI (1)
Gergana Angelova Lazarova, Ivan Koychev
2014 — conf
SU-FMI: System Description for SemEval-2014 Task 9 on Sentiment Analysis in Twitter.
SemEval@COLING
Boris Velichkov, Borislav Kapukaranov, Ivan Grozev, Jeni Karanesheva, Todor Mihaylov, Yasen Kiprov, Preslav Nakov, Ivan Koychev, Georgi Georgiev
2014 Misc conf
Social News Feed Recommender.
AIMSA
Milen Chechev, Ivan Koychev
2012 — conf
Computationally effective algorithm for information extraction and online review mining.
WIMS
Boris Kraychev, Ivan Koychev
2005 — conf
A Propositional Approach to Textual Case Indexing.
PKDD
Nirmalie Wiratunga, Robert Lothian, Sutanu Chakraborti, Ivan Koychev
2005 — conf
Textual Feature Construction from Keywords.
ICCBR Workshops
Nirmalie Wiratunga, Robert Lothian, Sutanu Chakraborti, Ivan Koychev
2005 — conf
Tracking Drifting Concepts by Time Window Optimisation.
SGAI Conf.
Ivan Koychev, Robert Lothian
2004 — conf
Feature Selection and Generalisation for Retrieval of Textual Cases.
ECCBR
Nirmalie Wiratunga, Ivan Koychev, Stewart Massie
2004 — conf
The Robert Gordon University's HARD Track Experiments at TREC 2004.
TREC
David J. Harper, Gheorghe Muresan, Bicheng Liu, Ivan Koychev, Dietrich Wettschereck, Nirmalie Wiratunga
2004 J jnl
Within-Document Retrieval: A User-Centred Evaluation of Relevance Profiling.
Inf. Retr.
David J. Harper, Ivan Koychev, Yixing Sun, Iain Pirie
2003 A conf
Query-Based Document Skimming: A User-Centred Evaluation of Relevance Profiling.
ECIR
David J. Harper, Ivan Koychev, Yixing Sun
2002 — conf
Tracking Changing User Interests through Prior-Learning of Context.
AH
Ivan Koychev
2000 A conf
Learning to recommend from positive evidence.
IUI
Ingo Schwab, Wolfgang Pohl, Ivan Koychev