Sahar Ghannay

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Documents
Identifiants chercheurs

Présentation

Associate professort at LIMSI, CNRS, Université Paris-Saclay

Team: ILES

Email: sahar.ghannay@limsi.fr

Website: https://saharghannay.github.io

Short Bio

Sahar Ghannay is an associate professor at Université Paris-Saclay, in the CNRS, LISN research center, since September 2018.

She received a PhD in Computer Science from Le Mans University on Septembre 2017. Her thesis work is part of the ANR VERA (AdVanced ERror Analysis for speech recognition) project. During her PhD, she spent a few months as @ visiting researcher at Apple within the Siri Speech team.

As a postdoctoral researcher at LIUM, she worked on neural end-to-end systems for the detection of named entities, speech understanding, as part of the Chist-Era M2CR (Multimodal Multilingual Continuous Representation for Human Language Understanding) project.

Her main research interests are continuous representations learning and their application to natural language processing and speech recognition tasks, semantic information extraction form spoken and writen language and dialog system.

CV

Education

  • PHD in computer science, at LIUM, Le Mans université, 2017
  • MS in computer science, Le Mans université, 2013
  • BS in computer science, Le Mans université and université de sfax, 2011

Work Experience

  • 2018 - now: Associate Professort at LISN, CNRS, Université Paris-Saclay
  • 2017-2018: Post-doc at LIUM, Le Mans université
  • 2017 (4 moths): Internship at Apple within the Siri Speech team at Cupertino
  • April 2013-Sept. 2014: research engineer

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Publications

Image document

Evaluating the Confidentiality of Synthetic Clinical Texts Generated by Language Models

Foucauld Estignard , Sahar Ghannay , Julien Girard-Satabin , Nicolas Hiebel , Aurélie Névéol
23rd International Conference on Artificial Intelligence in Medicine (AIME), Jun 2025, Pavie, Italy
Communication dans un congrès hal-05046326 v1
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Small Language Models are Good Too: An Empirical Study of Zero-Shot Classification

Pierre Lepagnol , Thomas Gerald , Sahar Ghannay , Christophe Servan , Sophie Rosset
The 2024 Joint International Conference on Computational Linguistics, Language Resources and Evaluation (LREC-COLING 2024), May 2024, TURIN, Italy. pp.14923-14936
Communication dans un congrès hal-04519930 v2
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New Semantic Task for the French Spoken Language Understanding MEDIA Benchmark

Nadège Alavoine , Gaëlle Laperriere , Christophe Servan , Sahar Ghannay , Sophie Rosset
The 2024 Joint International Conference on Computational Linguistics, Language Resources and Evaluation (LREC-COLING 2024), May 2024, Torino, Italy. pp.12227-12246
Communication dans un congrès hal-04523286 v1
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mALBERT: Is a Compact Multilingual BERT Model Still Worth It?

Christophe Servan , Sahar Ghannay , Sophie Rosset
The 2024 Joint International Conference on Computational Linguistics, Language Resources and Evaluation (LREC-COLING 2024), May 2024, Torino, Italy. pp.11023-11029
Communication dans un congrès hal-04520797 v1
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Multi-Level Information Retrieval Augmented Generation for Knowledge-based Visual Question Answering

Omar Adjali , Olivier Ferret , Sahar Ghannay , Hervé Le Borgne
The 2024 Conference on Empirical Methods in Natural Language Processing (EMNLP 2024), Nov 2024, Miami, United States. pp.16499-16513, ⟨10.18653/v1/2024.emnlp-main.922⟩
Communication dans un congrès hal-04852275 v1

Specialized Semantic Enrichment of Speech Representations

G. Laperrière , Ha Nguyen , Sahar Ghannay , Bassam Jabaian , Yannick Estève
2023 IEEE International Conference on Acoustics, Speech, and Signal Processing Workshops (ICASSPW), Jun 2023, Rhodes Island, Greece. pp.1-5, ⟨10.1109/ICASSPW59220.2023.10193452⟩
Communication dans un congrès hal-04425710 v1
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Projet Gender Equality Monitor (GEM)

Gilles Adda , François Buet , Sahar Ghannay , Cyril Grouin , Camille Guinaudeau et al.
CORIA-TALN 2023 30e Conférence sur le Traitement Automatique des Langues Naturelles (TALN), Jun 2023, Paris, France. pp.21-21
Communication dans un congrès hal-04208588 v1
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Continual self-supervised domain adaptation for end-to-end speaker diarization

Juan Manuel Coria , Hervé Bredin , Sahar Ghannay , Sophie Rosset
IEEE Spoken Language Technology Workshop (SLT 2022), IEEE Speech and Language Processing Technical Committee, Jan 2023, Doha, Qatar. pp.626 - 632, ⟨10.1109/SLT54892.2023.10023195⟩
Communication dans un congrès hal-03824546 v1
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Benchmarking Transformers-based models on French Spoken Language Understanding tasks

Oralie Cattan , Sahar Ghannay , Christophe Servan , Sophie Rosset
INTERSPEECH 2022, Sep 2022, Incheon, South Korea
Communication dans un congrès hal-03715340 v2
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Analyzing BERT Cross-lingual Transfer Capabilities in Continual Sequence Labeling

Juan Manuel Coria , Mathilde Veron , Sahar Ghannay , Guillaume Bernard , Hervé Bredin et al.
First Workshop on Performance and Interpretability Evaluations of Multimodal, Multipurpose, Massive-Scale Models, Oct 2022, virtual, South Korea
Communication dans un congrès hal-03824597 v1
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Evaluating the carbon footprint of NLP methods: a survey and analysis of existing tools

Nesrine Bannour , Sahar Ghannay , Aurélie Névéol , Anne-Laure Ligozat
EMNLP, Workshop SustaiNLP, Nov 2021, Punta Cana, Dominican Republic
Communication dans un congrès hal-03435068 v1
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Overlap-Aware Low-Latency Online Speaker Diarization Based on End-To-End Local Segmentation

Juan Manuel Coria , Hervé Bredin , Sahar Ghannay , Sophie Rosset
IEEE Automatic Speech Recognition and Unserstanding Workshop, Dec 2021, Cartagena, Colombia
Communication dans un congrès hal-03375330 v1

Error analysis applied to end-to end spoken language understanding

Antoine Caubrière , Sahar Ghannay , Natalia Tomashenko , Renato de Mori , Antoine Laurent et al.
45th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2020), May 2020, Barcelona, Spain. pp.8514-8518, ⟨10.1109/ICASSP40776.2020.9054455⟩
Communication dans un congrès hal-02465899 v1
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What is best for Spoken Language Understanding: Small but Task-dependant Embeddings or Huge but Out-of-domain Embeddings?

Sahar Ghannay , Antoine Neuraz , Sophie Rosset
45th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2020), May 2020, Barcelona, Spain. pp.8114-8118, ⟨10.1109/ICASSP40776.2020.9053278⟩
Communication dans un congrès hal-02503694 v1
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A Metric Learning Approach to Misogyny Categorization

Juan Manuel Coria , Sahar Ghannay , Sophie Rosset , Hervé Bredin
Workshop on Representation Learning for NLP, Jul 2020, Online, France. pp.89-94, ⟨10.18653/v1/2020.repl4nlp-1.12⟩
Communication dans un congrès hal-02989293 v1
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Experiments from LIMSI at the French Named Entity Recognition Coarse-grained task

Sahar Ghannay , Cyril Grouin , Thomas Lavergne
Conference and Labs of the Evaluation Forum, Sep 2020, Thessaloniki, Greece
Communication dans un congrès hal-04395545 v1
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A Cooking Knowledge Graph and Benchmark for Question Answering Evaluation in Lifelong Learning Scenarios

Mathilde Veron , Anselmo Peñas , Guillermo Echegoyen , Somnath Banerjee , Sahar Ghannay et al.
International Conference on Applications of Natural Language to Information Systems, Elisabeth Métais and Farid Meziane and Helmut Horacek and Philipp Cimiano, Jun 2020, Saarbrücken, Germany
Communication dans un congrès hal-03006228 v1
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Neural Networks approaches focused on French Spoken Language Understanding: application to the MEDIA Evaluation Task

Sahar Ghannay , Christophe Servan , Sophie Rosset
In Proceedings of The 28th International Conference on Computational Linguistics (COLING’2020), 2020, Dec 2020, Barcelona (online), Spain
Communication dans un congrès hal-03007482 v1

A Comparison of Metric Learning Loss Functions for End-To-End Speaker Verification

Juan Manuel Coria , Hervé Bredin , Sahar Ghannay , Sophie Rosset
International Conference on Statistical Language and Speech Processing, Oct 2020, Cardiff, United Kingdom. pp.137-148, ⟨10.1007/978-3-030-59430-5_11⟩
Communication dans un congrès hal-02989334 v1
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Lifelong learning and task-oriented dialogue system: what does it mean?

Mathilde Veron , Sahar Ghannay , Anne-Laure Ligozat , Sophie Rosset
International Workshop on Spoken Dialogue Systems Technology, Apr 2019, Siracusa, Italy
Communication dans un congrès hal-02301089 v1
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Simulation d'erreurs de reconnaissance automatique dans un cadre de compréhension de la parole

Edwin Simonnet , Sahar Ghannay , Nathalie Camelin , Yannick Estève
XXXIIe Journées d'Etudes sur la Parole (JEP 2018), Jun 2018, Aix-en-Provence, France
Communication dans un congrès hal-01757770 v1
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Simulating ASR errors for training SLU systems

Edwin Simonnet , Sahar Ghannay , Nathalie Camelin , Yannick Estève
LREC 2018, May 2018, Miyazaki, Japan
Communication dans un congrès hal-01715923 v1

Task Specific Sentence Embeddings for ASR Error Detection

Sahar Ghannay , Yannick Estève , Nathalie Camelin
Interspeech 2018, Sep 2018, Hyderabad, India. ⟨10.21437/Interspeech.2018-2211⟩
Communication dans un congrès hal-01870864 v1

Représentations de phrases dans un espace continu spécifiques à la tâche de détection d'erreurs

Sahar Ghannay , Yannick Estève , Nathalie Camelin
XXXIIe Journées d'Etudes sur la Parole (JEP 2018), Jun 2018, Aix-en-Provence, France
Communication dans un congrès hal-01757774 v1
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End-to-end named entity and semantic concept extraction from speech

Sahar Ghannay , Antoine Caubrière , Yannick Estève , Nathalie Camelin , Edwin Simonnet et al.
IEEE Spoken Language Technology Workshop, Dec 2018, Athens, Greece. ⟨10.1109/slt.2018.8639513⟩
Communication dans un congrès hal-01987740 v2
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Enriching confusion networks for post-processing

Sahar Ghannay , Yannick Estève , Nathalie Camelin
Statistical Language and Speech Processing 2017, Oct 2017, Le Mans, France
Communication dans un congrès hal-01585768 v1
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ASR error management for improving spoken language understanding

Edwin Simonnet , Sahar Ghannay , Nathalie Camelin , Yannick Estève , Renato de Mori
Interspeech 2017, Aug 2017, Stockholm, Sweden
Communication dans un congrès hal-01526298 v1

Recent improvements on error detection for automatic speech recognition

Yannick Estève , Sahar Ghannay , Nathalie Camelin
1st International Workshop on Multimodal Media Data Analytics (MMDA 2016), in Conjunction with the 22nd European Conference on Artificial Intelligence, 2016, The Hague The, Netherlands
Communication dans un congrès hal-01433168 v1

Word embedding evaluation and combination

Sahar Ghannay , Benoit Favre , Yannick Estève , Nathalie Camelin
10th edition of the Language Resources and Evaluation Conference (LREC 2016), 2016, Portorož, Slovenia
Communication dans un congrès hal-01433185 v1

Acoustic word embeddings for ASR error detection

Sahar Ghannay , Yannick Estève , Nathalie Camelin , Paul Deléglise
Interspeech 2016, 2016, San Francisco (CA, USA), Unknown Region
Communication dans un congrès hal-01433176 v1

Evaluation of acoustic word embeddings

Sahar Ghannay , Yannick Estève , Nathalie Camelin , Paul Deléglise
RepEval@ACL 2016: The 1st Workshop on Evaluating Vector-Space Representations for NLP, 2016, Berlin, Germany
Communication dans un congrès hal-01433181 v1

Combining continous word representation and prosodic features for ASR error prediction

Sahar Ghannay , Yannick Estève , Nathalie Camelin , Camille Dutrey , Fabian Santiago et al.
3rd International Conference on Statistical Language and Speech Processing (SLSP 2015), 2015, Budapest, Hungary
Communication dans un congrès hal-01433203 v1

Word embeddings combination and neural networks for robustness in ASR error detection

Sahar Ghannay , Yannick Estève , Nathalie Camelin
2015 European Signal Processing Conference (EUSIPCO 2015), 2015, Nice, France
Communication dans un congrès hal-01433210 v1

Which ASR errors are hard to detect?

Sahar Ghannay , Nathalie Camelin , Yannick Estève
Workshop Errors by Humans and Machines in multimedia, multimodal and multilingual data processing (ERRARE 2015), 2015, Sinaia, Romania
Communication dans un congrès hal-01433201 v1

Using Hypothesis Selection Based Features for Confusion Network MT System Combination

Sahar Ghannay , Loïc Barrault
Third Workshop on Hybrid Approaches to Translation (HyTra), EACL 2014, 2014, Gothenburg, Sweden
Communication dans un congrès hal-01433229 v1