Search Results for author: Noel Crespi

Found 8 papers, 2 papers with code

BERT-based Ensemble Approaches for Hate Speech Detection

no code implementations14 Sep 2022 Khouloud Mnassri, Praboda Rajapaksha, Reza Farahbakhsh, Noel Crespi

The experiments have shown good results especially the ensemble models, where stacking gave F1 score of 97% on Davidson dataset and aggregating ensembles 77% on the DHO dataset.

Hate Speech Detection Multi-Label Classification

Hate Speech Detection and Racial Bias Mitigation in Social Media based on BERT model

no code implementations14 Aug 2020 Marzieh Mozafari, Reza Farahbakhsh, Noel Crespi

Next, we introduce a bias alleviation mechanism in hate speech detection task to mitigate the effect of bias in training set during the fine-tuning of our pre-trained BERT-based model.

Abusive Language Hate Speech Detection +2

A First Instagram Dataset on COVID-19

3 code implementations25 Apr 2020 Koosha Zarei, Reza Farahbakhsh, Noel Crespi, Gareth Tyson

We believe that this contribution will help the community to better understand the dynamics behind this phenomenon in Instagram, as one of the major social media.

Social and Information Networks

How Impersonators Exploit Instagram to Generate Fake Engagement?

no code implementations17 Feb 2020 Koosha Zarei, Reza Farahbakhsh, Noel Crespi

Impersonators on Online Social Networks such as Instagram are playing an important role in the propagation of the content.

A BERT-Based Transfer Learning Approach for Hate Speech Detection in Online Social Media

2 code implementations28 Oct 2019 Marzieh Mozafari, Reza Farahbakhsh, Noel Crespi

To address these needs, in this study we introduce a novel transfer learning approach based on an existing pre-trained language model called BERT (Bidirectional Encoder Representations from Transformers).

Hate Speech Detection Language Modelling +1

Uncovering Flaming Events on News Media in Social Media

no code implementations16 Sep 2019 Praboda Rajapaksha, Reza Farahbakhsh, Noel Crespi, Bruno Defude

However, some comments or feedback on SNSs are inconsiderate and offensive, and sometimes this type of feedback has a very negative effect on a target user.

When Traffic Flow Prediction Meets Wireless Big Data Analytics

no code implementations23 Sep 2017 Yuanfang Chen, Mohsen Guizani, Yan Zhang, Lei Wang, Noel Crespi, Gyu Myoung Lee

Traffic congestion is one of the most serious problems in a city, which can be predicted in advance by analyzing traffic flow patterns.

Time Series Prediction

NetSpam: a Network-based Spam Detection Framework for Reviews in Online Social Media

no code implementations10 Mar 2017 Saeedreza Shehnepoor, Mostafa Salehi, Reza Farahbakhsh, Noel Crespi

Nowadays, a big part of people rely on available content in social media in their decisions (e. g. reviews and feedback on a topic or product).

Spam detection

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