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Federated recommendation aims to collect global knowledge by aggregating local models from massive devices, to provide recommendations while ensuring privacy. Current methods mainly leverage aggregation functions invented by federated…

Cryptography and Security · Computer Science 2024-06-07 Honglei Zhang , Haoxuan Li , Jundong Chen , Sen Cui , Kunda Yan , Abudukelimu Wuerkaixi , Xin Zhou , Zhiqi Shen , Yidong Li

Personalized federated learning is proposed to handle the data heterogeneity problem amongst clients by learning dedicated tailored local models for each user. However, existing works are often built in a centralized way, leading to high…

Machine Learning · Computer Science 2022-06-02 Rong Dai , Li Shen , Fengxiang He , Xinmei Tian , Dacheng Tao

Federated Instruction Tuning (FIT) has shown the ability to achieve collaborative model instruction tuning among massive data owners without sharing private data. However, it still faces two key challenges, i.e., data and resource…

Machine Learning · Computer Science 2024-02-28 Pengyu Zhang , Yingbo Zhou , Ming Hu , Junxian Feng , Jiawen Weng , Mingsong Chen

The irreplaceable key to the triumph of Question & Answer (Q&A) platforms is their users providing high-quality answers to the challenging questions posted across various topics of interest. From more than a decade, the expert finding…

Computers and Society · Computer Science 2023-06-28 Sofia Strukova , José A. Ruipérez-Valiente , Félix Gómez Mármol

Recommender systems are personalized information access applications; they are ubiquitous in today's online environment, and effective at finding items that meet user needs and tastes. As the reach of recommender systems has extended, it…

As language models are adopted by a more sophisticated and diverse set of users, the importance of guaranteeing that they provide factually correct information supported by verifiable sources is critical across fields of study. This is…

Computation and Language · Computer Science 2024-04-03 Chaitanya Malaviya , Subin Lee , Sihao Chen , Elizabeth Sieber , Mark Yatskar , Dan Roth

Food Computing is currently a fast-growing field of research. Natural language processing (NLP) is also increasingly essential in this field, especially for recognising food entities. However, there are still only a few well-defined tasks…

Computation and Language · Computer Science 2022-04-19 Ania Wróblewska , Agnieszka Kaliska , Maciej Pawłowski , Dawid Wiśniewski , Witold Sosnowski , Agnieszka Ławrynowicz

Personalization despite being an effective solution to the problem information overload remains tricky on account of multiple dimensions to consider. Furthermore, the challenge of avoiding overdoing personalization involves estimation of a…

Information Retrieval · Computer Science 2017-11-09 Arjumand Younus , Muhammad Atif Qureshi

Entity linking (EL) is the task of linking entity mentions in a document to referent entities in a knowledge base (KB). Many previous studies focus on Wikipedia-derived KBs. There is little work on EL over Wikidata, even though it is the…

Computation and Language · Computer Science 2022-03-16 Tuan Manh Lai , Heng Ji , ChengXiang Zhai

Federated learning is a distributed, on-device computation framework that enables training global models without exporting sensitive user data to servers. In this work, we describe methods to extend the federation framework to evaluate…

Machine Learning · Computer Science 2019-10-24 Kangkang Wang , Rajiv Mathews , Chloé Kiddon , Hubert Eichner , Françoise Beaufays , Daniel Ramage

In video surveillance applications, person search is a challenging task consisting in detecting people and extracting features from their silhouette for re-identification (re-ID) purpose. We propose a new end-to-end model that jointly…

Computer Vision and Pattern Recognition · Computer Science 2022-01-25 Angelique Loesch , Jaonary Rabarisoa , Romaric Audigier

Matrix factorization is one of the most efficient approaches in recommender systems. However, such algorithms, which rely on the interactions between users and items, perform poorly for "cold-users" (users with little history of such…

Information Retrieval · Computer Science 2018-05-18 ThaiBinh Nguyen , Atsuhiro Takasu

Database query performance problem determination is often performed by analyzing query execution plans (QEPs) in addition to other performance data. As the query workloads that organizations run, have become larger and more complex,…

Databases · Computer Science 2015-10-13 Guilherme Damasio , Piotr Mierzejewski , Jaroslaw Szlichta , Calisto Zuzarte

Federated learning (FL) is an emerging distributed machine learning paradigm that avoids data sharing among training nodes so as to protect data privacy. Under coordination of the FL server, each client conducts model training using its own…

Machine Learning · Computer Science 2021-01-01 Binbin Guo , Yuan Mei , Danyang Xiao , Weigang Wu , Ye Yin , Hongli Chang

In practical scenarios, federated learning frequently necessitates training personalized models for each client using heterogeneous data. This paper proposes a backbone self-distillation approach to facilitate personalized federated…

Machine Learning · Computer Science 2024-09-25 Pengju Wang , Bochao Liu , Dan Zeng , Chenggang Yan , Shiming Ge

With the rapid evolution of the Internet and the exponential proliferation of information, users encounter information overload and the conundrum of choice. Personalized recommendation systems play a pivotal role in alleviating this burden…

Information Retrieval · Computer Science 2024-03-29 Kangming Xu , Huiming Zhou , Haotian Zheng , Mingwei Zhu , Qi Xin

In the information age we are living in today, not only are we interested in accessing multimedia objects such as documents, videos, etc. but also in searching for professional experts, people or celebrities, possibly for professional needs…

Information Retrieval · Computer Science 2024-01-22 Luis M. de Campos , Juan M. Fernández-Luna , Juan F. Huete , Luis Redondo-Expósito

We implemented and evaluated a two-stage retrieval method for personalized academic search in which the initial search results are re-ranked using an author-topic profile. In academic search tasks, the user's own data can help optimizing…

Information Retrieval · Computer Science 2018-05-01 Suzan Verberne , Arjen P. de Vries , Wessel Kraaij

This paper presents preliminary works on using Word Embedding (word2vec) for query expansion in the context of Personalized Information Retrieval. Traditionally, word embeddings are learned on a general corpus, like Wikipedia. In this work…

Information Retrieval · Computer Science 2016-06-23 Nawal Ould-Amer , Philippe Mulhem , Mathias Gery

Scientists, governments, and companies increasingly publish datasets on the Web. Google's Dataset Search extracts dataset metadata -- expressed using schema.org and similar vocabularies -- from Web pages in order to make datasets…

Information Retrieval · Computer Science 2020-06-15 Omar Benjelloun , Shiyu Chen , Natasha Noy