Search Results for author: Mourad Oussalah

Found 15 papers, 2 papers with code

Finnish Hate-Speech Detection on Social Media Using CNN and FinBERT

no code implementations LREC 2022 Md Saroar Jahan, Mourad Oussalah, Nabil Arhab

The majority of this research has concentrated on English, although one notices the emergence of multilingual detection tools such as multilingual-BERT (mBERT).

Hate Speech Detection

A Comprehensive Study on NLP Data Augmentation for Hate Speech Detection: Legacy Methods, BERT, and LLMs

no code implementations30 Mar 2024 Md Saroar Jahan, Mourad Oussalah, Djamila Romaissa Beddia, Jhuma Kabir Mim, Nabil Arhab

The surge of interest in data augmentation within the realm of NLP has been driven by the need to address challenges posed by hate speech domains, the dynamic nature of social media vocabulary, and the demands for large-scale neural networks requiring extensive training data.

Data Augmentation Hate Speech Detection +1

Cross-Linguistic Offensive Language Detection: BERT-Based Analysis of Bengali, Assamese, & Bodo Conversational Hateful Content from Social Media

no code implementations16 Dec 2023 Jhuma Kabir Mim, Mourad Oussalah, Akash Singhal

The primary emphasis is placed on the meticulous detection of hate speech within the linguistic domains of Bengali, Assamese, and Bodo, forming the framework for Task 4: Annihilate Hates.

Language Identification

Semi-Supervised learning for Face Anti-Spoofing using Apex frame

no code implementations10 Sep 2023 Usman Muhammad, Mourad Oussalah, Jorma Laaksonen

Conventional feature extraction techniques in the face anti-spoofing domain either analyze the entire video sequence or focus on a specific segment to improve model performance.

Face Anti-Spoofing

Saliency-based Video Summarization for Face Anti-spoofing

no code implementations23 Aug 2023 Usman Muhammad, Mourad Oussalah, Jorma Laaksonen

Inspired by the visual saliency theory, we present a video summarization method for face anti-spoofing detection that aims to enhance the performance and efficiency of deep learning models by leveraging visual saliency.

Face Anti-Spoofing Face Presentation Attack Detection +1

Deep Ensemble Learning with Frame Skipping for Face Anti-Spoofing

2 code implementations6 Jul 2023 Usman Muhammad, Md Ziaul Hoque, Mourad Oussalah, Jorma Laaksonen

Face presentation attacks (PA), also known as spoofing attacks, pose a substantial threat to biometric systems that rely on facial recognition systems, such as access control systems, mobile payments, and identity verification systems.

Ensemble Learning Face Anti-Spoofing +1

Domain Generalization via Ensemble Stacking for Face Presentation Attack Detection

no code implementations5 Jan 2023 Usman Muhammad, Jorma Laaksonen, Djamila Romaissa Beddiar, Mourad Oussalah

The latter combines the predictions from the base models, leveraging their complementary information to better handle unseen target domains and enhance the overall performance.

Domain Generalization Ensemble Learning +3

Face Anti-Spoofing from the Perspective of Data Sampling

no code implementations28 Aug 2022 Usman Muhammad, Mourad Oussalah

In particular, the proposed scheme provides a much lower error (from 15. 2% to 6. 7% on CASIA-FASD and 5. 9% to 4. 9% on Replay-Attack) compared to baselines in cross-database scenarios.

Face Anti-Spoofing Face Presentation Attack Detection +1

Self-Supervised Face Presentation Attack Detection with Dynamic Grayscale Snippets

no code implementations27 Aug 2022 Usman Muhammad, Mourad Oussalah

To achieve this, we exploit the temporal consistency based on three RGB frames which are acquired at three different times in the video sequence.

Face Presentation Attack Detection Face Recognition +2

DziriBERT: a Pre-trained Language Model for the Algerian Dialect

2 code implementations25 Sep 2021 Amine Abdaoui, Mohamed Berrimi, Mourad Oussalah, Abdelouahab Moussaoui

The obtained results show that pre-training a dedicated model on a small dataset (150 MB) can outperform existing models that have been trained on much more data (hundreds of GB).

Language Modelling

Data Expansion using Back Translation and Paraphrasing for Hate Speech Detection

no code implementations25 May 2021 Djamila Romaissa Beddiar, Md Saroar Jahan, Mourad Oussalah

With proliferation of user generated contents in social media platforms, establishing mechanisms to automatically identify toxic and abusive content becomes a prime concern for regulators, researchers, and society.

Data Augmentation Hate Speech Detection +2

A systematic review of Hate Speech automatic detection using Natural Language Processing

no code implementations22 May 2021 Md Saroar Jahan, Mourad Oussalah

With the multiplication of social media platforms, which offer anonymity, easy access and online community formation, and online debate, the issue of hate speech detection and tracking becomes a growing challenge to society, individual, policy-makers and researchers.

Hate Speech Detection

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