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We define a method how digital ecosystems (including data spaces) may autonomously define and "advertise" credentials they issue or they trust in the form of so-called ecosystem trust profiles. An ecosystem trust profile collects all…

Cryptography and Security · Computer Science 2026-03-25 Christoph F. Strnadl

Understanding user interests is crucial for Click-Through Rate (CTR) prediction tasks. In sequential recommendation, pre-training from user historical behaviors through self-supervised learning can better comprehend user dynamic…

Information Retrieval · Computer Science 2024-07-30 Ruidong Han , Qianzhong Li , He Jiang , Rui Li , Yurou Zhao , Xiang Li , Wei Lin

There has been considerable progress on academic benchmarks for the Reading Comprehension (RC) task with State-of-the-Art models closing the gap with human performance on extractive question answering. Datasets such as SQuAD 2.0 & NQ have…

Computation and Language · Computer Science 2021-02-25 Rishav Chakravarti , Avirup Sil

Monte Carlo tree search (MCTS) is one of the most capable online search algorithms for sequential planning tasks, with significant applications in areas such as resource allocation and transit planning. Despite its strong performance in…

Artificial Intelligence · Computer Science 2024-10-31 Ziyan An , Hendrik Baier , Abhishek Dubey , Ayan Mukhopadhyay , Meiyi Ma

We propose ContextRL, a novel framework that leverages context augmentation to overcome these bottlenecks. Specifically, to enhance Identifiability, we provide the reward model with full reference solutions as context, enabling fine-grained…

Despite increasing instances of machine translation (MT) systems including contextual information, the evidence for translation quality improvement is sparse, especially for discourse phenomena. Popular metrics like BLEU are not expressive…

Computation and Language · Computer Science 2020-05-01 Prathyusha Jwalapuram , Barbara Rychalska , Shafiq Joty , Dominika Basaj

Inspired by conversational reading comprehension (CRC), this paper studies a novel task of leveraging reviews as a source to build an agent that can answer multi-turn questions from potential consumers of online businesses. We first build a…

Computation and Language · Computer Science 2019-11-07 Hu Xu , Bing Liu , Lei Shu , Philip S. Yu

In e-commerce search, relevance between query and documents is an essential requirement for satisfying user experience. Different from traditional e-commerce platforms that offer products, users search on life service platforms such as…

Information Retrieval · Computer Science 2023-08-29 Wen Zan , Yaopeng Han , Xiaotian Jiang , Yao Xiao , Yang Yang , Dayao Chen , Sheng Chen

E-commerce queries are often short and ambiguous. Consequently, query understanding often uses query rewriting to disambiguate user-input queries. While using e-commerce search tools, users tend to enter multiple searches, which we call…

Information Retrieval · Computer Science 2022-09-27 Simiao Zuo , Qingyu Yin , Haoming Jiang , Shaohui Xi , Bing Yin , Chao Zhang , Tuo Zhao

Despite the remarkable advancements in machine translation, the current sentence-level paradigm faces challenges when dealing with highly-contextual languages like Japanese. In this paper, we explore how context-awareness can improve the…

Computation and Language · Computer Science 2023-11-21 Sumire Honda , Patrick Fernandes , Chrysoula Zerva

We introduce the Temporal Contrastive Transformer (TCT), a representation learning framework designed to capture contextual temporal dynamics in sequences of financial transactions. The model is trained using a self-supervised contrastive…

Machine Learning · Computer Science 2026-05-22 Danny Butvinik , Yonit Marcus , Nitzan Tal , Gabrielle Azoulay

Tourism is a high-stakes setting for conversational recommender systems (CRS): a plausible-sounding suggestion can waste real money and trip time once a traveler acts on it. Existing CRS benchmarks primarily evaluate systems with a single…

Information Retrieval · Computer Science 2026-05-11 Zixu Zhao , Sijin Wang , Yu Hou , Yuanyuan Xu , Yufan Sheng , Xike Xie , Wenjie Zhang , Won-Yong Shin , Xin Cao

Reputation is crucial to enabling human or software agents to select among alternative providers. Although several effective reputation assessment methods exist, they typically distil reputation into a numerical representation, with no…

Artificial Intelligence · Computer Science 2020-06-17 Ingrid Nunes , Phillip Taylor , Lina Barakat , Nathan Griffiths , Simon Miles

In search systems, effectively coordinating the two core objectives of search relevance matching and click-through rate (CTR) prediction is crucial for discovering users' interests and enhancing platform revenue. In our prior work PRECTR,…

Information Retrieval · Computer Science 2026-02-25 Shuzhi Cao , Rong Chen , Ailong He , Shuguang Han , Jufeng Chen

Individual agents in multi-agent (MA) systems often lack robustness, tending to blindly conform to misleading peers. We show this weakness stems from both sycophancy and inadequate ability to evaluate peer reliability. To address this, we…

Artificial Intelligence · Computer Science 2026-01-30 Ruiwen Zhou , Maojia Song , Xiaobao Wu , Sitao Cheng , Xunjian Yin , Yuxi Xie , Zhuoqun Hao , Wenyue Hua , Liangming Pan , Soujanya Poria , Min-Yen Kan

Embedding models, which learn latent representations of users and items based on user-item interaction patterns, are a key component of recommendation systems. In many applications, contextual constraints need to be applied to refine…

Information Retrieval · Computer Science 2019-07-04 Syrine Krichene , Mike Gartrell , Clement Calauzenes

Sequential recommendation methods are increasingly important in cutting-edge recommender systems. Through leveraging historical records, the systems can capture user interests and perform recommendations accordingly. State-of-the-art…

Information Retrieval · Computer Science 2023-08-10 Chong Liu , Xiaoyang Liu , Rongqin Zheng , Lixin Zhang , Xiaobo Liang , Juntao Li , Lijun Wu , Min Zhang , Leyu Lin

Next basket recommendation, which aims to predict the next a few items that a user most probably purchases given his historical transactions, plays a vital role in market basket analysis. From the viewpoint of item, an item could be…

Information Retrieval · Computer Science 2019-04-30 Jingxuan Yang , Jun Xu , Jianzhuo Tong , Sheng Gao , Jun Guo , Jirong Wen

We introduce the Visual Personalization Turing Test (VPTT), a new paradigm for evaluating contextual visual personalization based on perceptual indistinguishability, rather than identity replication. A model passes the VPTT if its output…

Computer Vision and Pattern Recognition · Computer Science 2026-02-02 Rameen Abdal , James Burgess , Sergey Tulyakov , Kuan-Chieh Jackson Wang

One main challenge in social media is to identify trustworthy information. If we cannot recognize information as trustworthy, that information may become useless or be lost. Opposite, we could consume wrong or fake information with major…

Social and Information Networks · Computer Science 2019-04-17 Jamal Al Qundus , Adrian Paschke