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Huawei's vision and mission is to build a fully connected intelligent world. Since 2013, Huawei Noah's Ark Lab has helped many products build recommender systems and search engines for getting the right information to the right users. Every…

Information Retrieval · Computer Science 2023-10-10 Zhenhua Dong , Jieming Zhu , Weiwen Liu , Ruiming Tang

This paper presents the D2KLab team's approach to the RecSys Challenge 2019 which focuses on the task of recommending accommodations based on user sessions. What is the feeling of a person who says "Rooms of the hotel are enormous, staff…

Machine Learning · Computer Science 2020-08-26 Amine Dadoun , Raphael Troncy

We present the third edition of the VoiceMOS Challenge, a scientific initiative designed to advance research into automatic prediction of human speech ratings. There were three tracks. The first track was on predicting the quality of…

As XR devices become widespread, 3D interaction has become commonplace, and UI developers are increasingly required to consider usability to deliver better user experiences. The HCI community has long studied target-pointing performance,…

Human-Computer Interaction · Computer Science 2026-01-08 Tatsuya Okuno , Haruto Shimizu , Nobuhito Kasahara , Taiyu Honma , Shota Yamanaka , Homei Miyashita

Recommender Systems (RS) play an integral role in enhancing user experiences by providing personalized item suggestions. This survey reviews the progress in RS inclusively from 2017 to 2024, effectively connecting theoretical advances with…

Information Retrieval · Computer Science 2025-10-17 Shaina Raza , Mizanur Rahman , Safiullah Kamawal , Armin Toroghi , Ananya Raval , Farshad Navah , Amirmohammad Kazemeini

Ensuring usability is crucial for the success of mobile apps. Usability issues can compromise user experience and negatively impact the perceived app quality. This paper presents UX-LLM, a novel tool powered by a Large Vision-Language Model…

Software Engineering · Computer Science 2026-01-14 Ali Ebrahimi Pourasad , Walid Maalej

Effective item identifiers (IDs) are an important component for recommender systems (RecSys) in practice, and are commonly adopted in many use cases such as retrieval and ranking. IDs can encode collaborative filtering signals within…

We describe SemEval-2021 task 6 on Detection of Persuasion Techniques in Texts and Images: the data, the annotation guidelines, the evaluation setup, the results, and the participating systems. The task focused on memes and had three…

This article introduces GuessCompx which is an R package that performs an empirical estimation on the time and memory complexities of an algorithm or a function. It tests multiple increasing-sizes samples of the user's data and attempts to…

Data Structures and Algorithms · Computer Science 2020-10-22 Marc Agenis-Nevers , Neeraj Dhanraj Bokde , Zaher Mundher Yaseen , Mayur Shende

Pinterest is a leading visual discovery platform where recommender systems (RecSys) are key to delivering relevant, engaging, and fresh content to our users. In this paper, we study the problem of improving RecSys model predictions for…

Information Retrieval · Computer Science 2025-12-22 Saeed Ebrahimi , Weijie Jiang , Jaewon Yang , Olafur Gudmundsson , Yucheng Tu , Huizhong Duan

Building universal user representations that capture the essential aspects of user behavior is a crucial task for modern machine learning systems. In real-world applications, a user's historical interactions often serve as the foundation…

Information Retrieval · Computer Science 2025-08-12 Anton Klenitskiy , Artem Fatkulin , Daria Denisova , Anton Pembek , Alexey Vasilev

This study is motivated by two key considerations: the significant benefits mobile applications offer individuals and businesses, and the limited empirical research on usability challenges. To address this gap, we conducted structured…

Human-Computer Interaction · Computer Science 2025-06-03 Pawel Weichbroth

App usage prediction is important for smartphone system optimization to enhance user experience. Existing modeling approaches utilize historical app usage logs along with a wide range of semantic information to predict the app usage;…

Machine Learning · Computer Science 2021-08-27 Yonchanok Khaokaew , Mohammad Saiedur Rahaman , Ryen W. White , Flora D. Salim

The commodity and widespread use of online shopping are having an unprecedented impact on climate, with emission figures from key actors that are easily comparable to those of a large-scale metropolis. Despite online shopping being fueled…

Information Retrieval · Computer Science 2025-03-24 Raoul Kalisvaart , Masoud Mansoury , Alan Hanjalic , Elvin Isufi

The Competition on Software Verification (SV-COMP) is a large computational experiment benchmarking many different software verification tools on a vast collection of C and Java benchmarks. Such experimental research should be reproducible…

Logic in Computer Science · Computer Science 2023-03-22 Marcus Gerhold , Arnd Hartmanns

Human beings, even small children, quickly become adept at figuring out how to use applications on their mobile devices. Learning to use a new app is often achieved via trial-and-error, accelerated by transfer of knowledge from past…

Artificial Intelligence · Computer Science 2021-06-08 Maayan Shvo , Zhiming Hu , Rodrigo Toro Icarte , Iqbal Mohomed , Allan Jepson , Sheila A. McIlraith

Prefetching web pages is a well-studied solution to reduce network latency by predicting users' future actions based on their past behaviors. However, such techniques are largely unexplored on mobile platforms. Today's privacy regulations…

Software Engineering · Computer Science 2021-03-25 Yixue Zhao , Siwei Yin , Adriana Sejfia , Marcelo Schmitt Laser , Haoyu Wang , Nenad Medvidovic

Push notification is a key component for E-commerce mobile applications, which has been extensively used for user growth and engagement. The effectiveness of the push notification is generally measured by message open rate. A push message…

Information Retrieval · Computer Science 2017-07-27 Huasha Zhao , Luo Si , Xiaogang Li , Qiong Zhang

Mobile applications have become an inseparable part of people's daily life. Nonetheless, the market competition is extremely fierce, and apps lacking recognition among most users are susceptible to market elimination. To this end,…

Software Engineering · Computer Science 2023-11-28 Shiqi Duan , Jianxun Liu , Yong Xiao , Xiangping Zhang

Recommender systems (RecSys) have been well developed to assist user decision making. Traditional RecSys usually optimize a single objective (e.g., rating prediction errors or ranking quality) in the model. There is an emerging demand in…

Information Retrieval · Computer Science 2023-06-13 Yong Zheng , David , Wang