Dr. Preslav Nakov | Hamad Bin Khalifa University
Hamad Bin Khalifa University


Dr. Preslav Nakov

Dr. Preslav Nakov (PhD)

Principal Scientist
Arabic Language Technologies
Qatar Computing Research Institute

  • Phone+974 4454 1733
  • Office locationHBKU Research Complex, RC1


Dr. Nakov leads the Tanbih mega-project (http://tanbih.qcri.org), developed in collaboration with MIT. The project's aim is to build a news aggregator that limits the effect of fake news, propaganda and media bias by helping users step out of their bubble and achieve a healthy news diet. He is also the lead-PI of a QCRI-MIT collaboration project on Arabic Speech and Language Processing for Cross-Language Information Search and Fact Verification (co-PI, 2016-2018; Lead-PI, 2018-present), and he was a co-PI of another QCRI-MIT collaboration project on Speech and Language Processing for Arabic (2013-2016).

Dr. Nakov is Secretary of ACL SIGLEX and also a Secretary of ACL SIGSLAV. He is member of the editorial board of Transactions of the Association for Computational Linguistics (TACL), Computer Speech and Language (CSL), Natural Language Engineerng (NLE), AI Communications, and Frontiers in AI journals. 

Dr. Nakov co-authored a Morgan & Claypool book on Semantic Relations between Nominals, two books on computer algorithms, and many research papers in top-tier conferences and journals. He received the Young Researcher Award at RANLP'2011. He was also the first to receive the Bulgarian President's John Atanasoff award, named after the inventor of the first automatic electronic digital computer.

Dr. Nakov's research was featured in over 100 news outlets, including Forbes, Boston Globe, Aljazeera, MIT Technology Review, Science Daily, Popular Science, Fast Company, The Register, WIRED, and Engadget, among others.


Research Interests

  • Computational Linguistics
  • Natural Language Processing (for English, Arabic and other languages)
  • Fact Checking
  • Question Answering
  • Machine Translation
  • Sentiment Analysis
  • Lexical Semantics
  • Web as a Corpus
  • Biomedical Text Processing


Principal Scientist

Qatar Computing Research Institute, HBKU (Senior Scientist: 2013-2018; Scientist: 2011-2013)

2011 - present
  • Research Fellow

    National University of Singapore

    2008 - 2011
  • Honorary Lecturer

    Sofia University

  • Researcher

    Bulgarian Academy of Sciences

  • Research Assistant

    University of California at Berkeley

    2003 - 2007



University of California at Berkeley

  • M.Sc.

    Sofia University


Selected Publications

  • Alberto Barron-Cedeno, Giovanni Da San Martino, Israa Jaradat, Preslav Nakov

    Proppy: A System to Unmask Propaganda in Online News; AAAI;

  • Ramy Baly, Georgi Karadzhov, Abdelrhman Saleh, James Glass, Preslav Nakov

    Multi-Task Ordinal Regression for Jointly Predicting the Trustworthiness and the Leading Political Ideology of News Media; NAACL;

  • Nadir Durrani, Fahim Dalvi, Hassan Sajjad, Yonatan Belinkov, Preslav Nakov

    One Size Does Not Fit All: Comparing NMT Representations of Different Granularities; NAACL

  • Tamer Elsayed, Preslav Nakov, Alberto Barrón-Cedeño, Maram Hasanain, Reem Suwaileh, Pepa Atanasova, Giovanni Da San Martino

    CheckThat! at CLEF 2019: Automatic Identification and Verification of Claims; ECIR

  • Preslav Nakov, Lluís Màrquez, Alberto Barrón-Cedeño, Pepa Gencheva, Georgi Karadzhov, Tsvetomila Mihaylova, Mitra Mohtarami, James Glass

    Automatic Fact Checking Using Context and Discourse Information; ACM Journal of Data and Information Quality (ACM JDIQ)

  • Preslav Nakov, Lluís Màrquez, Alessandro Moschitti, Hamdy Mubarak

    Arabic Community Question Answering; Natural Language Engineering

  • Todor Mihaylov, Tsvetomila Mihaylova, Preslav Nakov, Lluís Màrquez, Georgi Georgiev, Ivan Koychev

    The dark side of news community forums: opinion manipulation trolls. Internet Research

  • Ramy Baly, Georgi Karadzhov, Dimitar Alexandrov, James R. Glass, Preslav Nakov

    Predicting Factuality of Reporting and Bias of News Media Sources; EMNLP

  • Shafiq R. Joty, Lluís Màrquez, Preslav Nakov

    Joint Multitask Learning for Community Question Answering Using Task-Specific Embeddings; EMNLP

  • Darsh J. Shah, Tao Lei, Alessandro Moschitti, Salvatore Romeo, Preslav Nakov

    Adversarial Domain Adaptation for Duplicate Question Detection; EMNLP

  • Israa Jaradat, Pepa Gencheva, Alberto Barrón-Cedeño, Lluís Màrquez, Preslav Nakov

    ClaimRank: Detecting Check-Worthy Claims in Arabic and English; NAACL

  • Ramy Baly, Preslav Nakov, Lluís Màrquez, James Glass and Alessandro Moschitti

    Integrating Stance Detection and Fact Checking in a Unified Corpus; NAACL

  • Mitra Mohtarami, Ramy Baly, James Glass, Preslav Nakov, Lluís Màrquez and Alessandro Moschitti

    Automatic Stance Detection Using End-to-End Memory Networks; NAACL

  • Tsvetomila Mihaylova, Preslav Nakov, Lluis Marquez, Alberto Barron-Cedeno, Mitra Mohtarami, Georgi Karadjov, James Glass

    Fact Checking in Community Forums; AAAI

  • Shafiq Joty, Francisco Guzman, Lluis Marquez, and Preslav Nakov

    Discourse Structure in Machine Translation Evaluation; Computational Linguistics

  • Francisco Guzman, Shafiq Joty, Lluis Marquez, and Preslav Nakov

    Machine Translation Evaluation with Neural Networks; Computer Speech & Language

  • Shafiq Joty, Preslav Nakov, Lluis Marquez, Israa Jaradat

    Cross-language Learning with Adversarial Neural Networks; CoNLL

  • Giovanni Da San Martino, Salvatore Romeo, Alberto Barrón-Cedeño, Shafiq Joty, Lluís Màrquez, Alessandro Moschitti, Preslav Nakov

    Cross-Language Question Re-ranking; CoNLL

  • Preslav Nakov, Francisco Guzman, Lluis Marques

    It Takes Three to Tango: Triangulation Approach to Answer Ranking in Community Question Answering; EMNLP

  • Francisco Guzman, Lluis Marques, Preslav Nakov

    Machine Translation Evaluation Meets Community Question Answering; ACL

  • Shafiq Joty, Lluis Marquez, Preslav Nakov

    Joint Learning with Global Inference for Comment Classification in Community Question Answering; HLT-NAACL

  • Shafiq Joty, Alberto Barrón-Cedeño, Giovanni Da San Martino, Simone Filice, Alessandro Moschitti, Lluís Màrquez, Preslav Nakov

    Global Thread-level Inference for Comment Classification in Community Question Answering; EMNLP

  • Preslav Nakov, Francisco Guzmán, Stephan Vogel

    Analyzing optimization for statistical machine translation: MERT learns verbosity, PRO learns length; CoNLL

  • Francisco Guzman, Shafiq Joty, Lluis Marquez, Preslav Nakov

    Pairwise Neural Machine Translation Evaluation; ACL

  • Alberto Barrón-Cedeno, Simone Filice, Giovanni Da San Martino, Shafiq R Joty, Lluís Màrquez, Preslav Nakov, Alessandro Moschitti

    Thread-Level Information for Comment Classification in Community Question Answering; ACL

  • Francisco Guzman, Shafiq Joty, Lluis Marquez, Alessandro Moschitti, Preslav Nakov, Massimo Nicosia

    Learning to Differentiate Better from Worse Translations; EMNLP

  • Iman Saleh, Alessandro Moschitti, Preslav Nakov, Lluis Marquez, Shafiq Joty

    Semantic Kernels for Semantic Parsing; EMNLP

  • Iman Saleh, Scott Cyphers, Jim Glass, Shafiq Joty, Lluís Màrquez, Alessandro Moschitti, Preslav Nakov

    A Study of using Syntactic and Semantic Structures for Concept Segmentation and Labeling; COLING

  • Francisco Guzman, Shafiq Joty, Lluis Marquez, Preslav Nakov

    Using Discourse Structure Improves Machine Translation Evaluation; ACL

  • Preslav Nakov, Francisco Guzman, Stephan Vogel

    A Tale about PRO and Monsters; ACL

  • Preslav Nakov, Francisco Guzman, Stephan Vogel

    Optimizing for Sentence-Level BLEU+1 Yields Short Translations; COLING

  • Vivi Nastase, Preslav Nakov, Diarmuid O Seaghdha, Stan Szpakowicz

    Semantic relations between nominals; Synthesis Lectures on Human Language Technologies series (book); Morgan & Claypool Publishers