Search Results for author: Alan Hanjalic

Found 15 papers, 9 papers with code

Mitigating Mainstream Bias in Recommendation via Cost-sensitive Learning

1 code implementation25 Jul 2023 Roger Zhe Li, Julián Urbano, Alan Hanjalic

Mainstream bias, where some users receive poor recommendations because their preferences are uncommon or simply because they are less active, is an important aspect to consider regarding fairness in recommender systems.

Fairness Recommendation Systems

Multi-label Node Classification On Graph-Structured Data

1 code implementation20 Apr 2023 Tianqi Zhao, Ngan Thi Dong, Alan Hanjalic, Megha Khosla

As our second contribution, we define homophily and Cross-Class Neighborhood Similarity for the multi-label scenario and provide a thorough analyses of the collected $9$ multi-label datasets.

Classification Multi-class Classification +1

New Insights into Metric Optimization for Ranking-based Recommendation

1 code implementation4 Jun 2021 Roger Zhe Li, Julián Urbano, Alan Hanjalic

Most methods following this approach aim at optimizing the same metric being used for evaluation, under the assumption that this will lead to the best performance.

Learning-To-Rank Recommendation Systems

Leave No User Behind: Towards Improving the Utility of Recommender Systems for Non-mainstream Users

1 code implementation2 Feb 2021 Roger Zhe Li, Julián Urbano, Alan Hanjalic

In this paper we focus on the so-called mainstream bias: the tendency of a recommender system to provide better recommendations to users who have a mainstream taste, as opposed to non-mainstream users.

Collaborative Filtering Recommendation Systems

Partially Synthetic Data for Recommender Systems: Prediction Performance and Preference Hiding

1 code implementation9 Aug 2020 Manel Slokom, Martha Larson, Alan Hanjalic

This paper demonstrates the potential of statistical disclosure control for protecting the data used to train recommender systems.

Recommendation Systems Synthetic Data Generation

S2IGAN: Speech-to-Image Generation via Adversarial Learning

2 code implementations14 May 2020 Xinsheng Wang, Tingting Qiao, Jihua Zhu, Alan Hanjalic, Odette Scharenborg

An estimated half of the world's languages do not have a written form, making it impossible for these languages to benefit from any existing text-based technologies.

Image Generation

Statistical Significance Testing in Information Retrieval: An Empirical Analysis of Type I, Type II and Type III Errors

1 code implementation27 May 2019 Julián Urbano, Harlley Lima, Alan Hanjalic

Statistical significance testing is widely accepted as a means to assess how well a difference in effectiveness reflects an actual difference between systems, as opposed to random noise because of the selection of topics.

Information Retrieval Retrieval +1

Are Nearby Neighbors Relatives?: Testing Deep Music Embeddings

no code implementations15 Apr 2019 Jaehun Kim, Julián Urbano, Cynthia C. S. Liem, Alan Hanjalic

The underlying assumption is that in case a deep representation is to be trusted, distance consistency between known related points should be maintained both in the input audio space and corresponding latent deep space.

One Deep Music Representation to Rule Them All? : A comparative analysis of different representation learning strategies

1 code implementation12 Feb 2018 Jaehun Kim, Julián Urbano, Cynthia C. S. Liem, Alan Hanjalic

In this paper, we present the results of our investigation of what are the most important factors to generate deep representations for the data and learning tasks in the music domain.

Information Retrieval Music Information Retrieval +3

From Deterministic to Generative: Multi-Modal Stochastic RNNs for Video Captioning

no code implementations8 Aug 2017 Jingkuan Song, Yuyu Guo, Lianli Gao, Xuelong. Li, Alan Hanjalic, Heng Tao Shen

In this paper, we propose a generative approach, referred to as multi-modal stochastic RNNs networks (MS-RNN), which models the uncertainty observed in the data using latent stochastic variables.

Video Captioning

Geo-distinctive Visual Element Matching for Location Estimation of Images

no code implementations28 Jan 2016 Xinchao Li, Martha A. Larson, Alan Hanjalic

These representations are based on visual element clouds, which robustly capture the connection between the query and visual evidence from candidate locations.

Common Sense Reasoning

Learning Subclass Representations for Visually-varied Image Classification

no code implementations12 Jan 2016 Xinchao Li, Peng Xu, Yue Shi, Martha Larson, Alan Hanjalic

The novelty of the approach is that subclass representations make use of not only the content of the photos themselves, but also information on the co-occurrence of their tags, which determines membership in both subclasses and top-level classes.

Classification General Classification +2

Exploiting Social Tags for Cross-Domain Collaborative Filtering

no code implementations20 Feb 2013 Yue Shi, Martha Larson, Alan Hanjalic

A key question to be answered in the context of CDCF is what common characteristics can be deployed to link different domains for effective knowledge transfer.

Collaborative Filtering Recommendation Systems +2

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