Search Results for author: Olfa Nasraoui

Found 10 papers, 4 papers with code

Debiasing the Cloze Task in Sequential Recommendation with Bidirectional Transformers

1 code implementation22 Jan 2023 Khalil Damak, Sami Khenissi, Olfa Nasraoui

The most common approach to mitigating exposure bias in recommendation has been Inverse Propensity Scoring (IPS), which consists of down-weighting the interacted predictions in the loss function in proportion to their propensities of exposure, yielding a theoretically unbiased learning.

Language Modelling Masked Language Modeling +1

Debiased Explainable Pairwise Ranking from Implicit Feedback

1 code implementation30 Jul 2021 Khalil Damak, Sami Khenissi, Olfa Nasraoui

In this work, we first propose a novel explainable loss function and a corresponding Matrix Factorization-based model called Explainable Bayesian Personalized Ranking (EBPR) that generates recommendations along with item-based explanations.

Fairness Recommendation Systems

Theoretical Modeling of the Iterative Properties of User Discovery in a Collaborative Filtering Recommender System

1 code implementation21 Aug 2020 Sami Khenissi, Mariem Boujelbene, Olfa Nasraoui

We present a theoretical framework to model the asymptotic evolution of the different components of a recommender system operating within a feedback loop setting, and derive theoretical bounds and convergence properties on quantifiable measures of the user discovery and blind spots.

BIG-bench Machine Learning Collaborative Filtering +1

Modeling and Counteracting Exposure Bias in Recommender Systems

no code implementations1 Jan 2020 Sami Khenissi, Olfa Nasraoui

Then we model the exposure that is borne from the interaction between the user and the recommender system and propose new debiasing strategies for these systems.

BIG-bench Machine Learning Decision Making +1

An Explainable Autoencoder For Collaborative Filtering Recommendation

no code implementations23 Dec 2019 Pegah Sagheb Haghighi, Olurotimi Seton, Olfa Nasraoui

In this work, we design an explainable recommendation system using an Autoencoder model whose predictions can be explained using the neighborhood based explanation style.

Collaborative Filtering Explainable Recommendation +2

SeER: An Explainable Deep Learning MIDI-based Hybrid Song Recommender System

1 code implementation25 Jun 2019 Khalil Damak, Olfa Nasraoui

State of the art music recommender systems mainly rely on either matrix factorization-based collaborative filtering approaches or deep learning architectures.

Collaborative Filtering Recommendation Systems +1

Human-Algorithm Interaction Biases in the Big Data Cycle: A Markov Chain Iterated Learning Framework

no code implementations29 Aug 2016 Olfa Nasraoui, Patrick Shafto

In this paper, we present a preliminary theoretical model and analysis of the mutual interaction between humans and algorithms, based on an iterated learning framework that is inspired from the study of human language evolution.

BIG-bench Machine Learning Recommendation Systems

Explainable Restricted Boltzmann Machines for Collaborative Filtering

no code implementations22 Jun 2016 Behnoush Abdollahi, Olfa Nasraoui

Most accurate recommender systems are black-box models, hiding the reasoning behind their recommendations.

Collaborative Filtering Explanation Generation +1

Deep Learning of Part-based Representation of Data Using Sparse Autoencoders with Nonnegativity Constraints

no code implementations12 Jan 2016 Ehsan Hosseini-Asl, Jacek M. Zurada, Olfa Nasraoui

We demonstrate a new deep learning autoencoder network, trained by a nonnegativity constraint algorithm (NCAE), that learns features which show part-based representation of data.

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