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In informational recommenders, many challenges arise from the need to handle the semantic and hierarchical structure between knowledge areas. This work aims to advance towards building a state-aware educational recommendation system that…

信息检索 · 计算机科学 2021-12-09 Sahan Bulathwela , María Pérez-Ortiz , Emine Yilmaz , John Shawe-Taylor

Tucker decomposition has been widely used in a variety of applications to obtain latent factors of tensor data. In these applications, a common need is to compute Tucker decomposition for a given time range. Furthermore, real-world tensor…

数据结构与算法 · 计算机科学 2025-01-14 Ruizhong Qiu , Jun-Gi Jang , Xiao Lin , Lihui Liu , Hanghang Tong

In statistical relational learning, the link prediction problem is key to automatically understand the structure of large knowledge bases. As in previous studies, we propose to solve this problem through latent factorization. However, here…

人工智能 · 计算机科学 2016-06-22 Théo Trouillon , Johannes Welbl , Sebastian Riedel , Éric Gaussier , Guillaume Bouchard

A temporal graph can be considered as a stream of links, each of which represents an interaction between two nodes at a certain time. On temporal graphs, link prediction is a common task, which aims to answer whether the query link is true…

人工智能 · 计算机科学 2024-02-13 Bingqing Liu , Xikun Huang

Temporal knowledge graph (TKG) reasoning is a crucial task that has gained increasing research interest in recent years. Most existing methods focus on reasoning at past timestamps to complete the missing facts, and there are only a few…

机器学习 · 计算机科学 2021-09-10 Haohai Sun , Jialun Zhong , Yunpu Ma , Zhen Han , Kun He

There has been an increasing interest in inferring future links on temporal knowledge graphs (KG). While links on temporal KGs vary continuously over time, the existing approaches model the temporal KGs in discrete state spaces. To this…

机器学习 · 计算机科学 2022-06-03 Zhen Han , Zifeng Ding , Yunpu Ma , Yujia Gu , Volker Tresp

Unlike the matrix case, computing low-rank approximations of tensors is NP-hard and numerically ill-posed in general. Even the best rank-1 approximation of a tensor is NP-hard. In this paper, we use convex optimization to develop…

统计理论 · 数学 2016-09-14 Anil Aswani

Temporal knowledge prediction is a crucial task for the event early warning that has gained increasing attention in recent years, which aims to predict the future facts by using relevant historical facts on the temporal knowledge graphs.…

人工智能 · 计算机科学 2022-04-27 Pengpeng Shao , Tong Liu , Feihu Che , Dawei Zhang , Jianhua Tao

Temporal networks have gained significant prominence in the past decade for modelling dynamic interactions within complex systems. A key challenge in this domain is Temporal Link Prediction (TLP), which aims to forecast future connections…

人工智能 · 计算机科学 2025-03-03 Jiafeng Xiong , Ahmad Zareie , Rizos Sakellariou

Knowledge graph reasoning is a critical task in natural language processing. The task becomes more challenging on temporal knowledge graphs, where each fact is associated with a timestamp. Most existing methods focus on reasoning at past…

机器学习 · 计算机科学 2020-10-08 Woojeong Jin , Meng Qu , Xisen Jin , Xiang Ren

In this paper, we propose a novel tensor learning and coding model for third-order data completion. Our model is to learn a data-adaptive dictionary from the given observations, and determine the coding coefficients of third-order tensor…

计算机视觉与模式识别 · 计算机科学 2021-03-02 Tai-Xiang Jiang , Xi-Le Zhao , Hao Zhang , Michael K. Ng

Real-time prediction plays a vital role in various control systems, such as traffic congestion control and wireless channel resource allocation. In these scenarios, the predictor usually needs to track the evolution of the latent…

最优化与控制 · 数学 2024-08-14 Zhenting Luan , Defeng Sun , Haoning Wang , Liping Zhang

There has been an increased interest in multimodal language processing including multimodal dialog, question answering, sentiment analysis, and speech recognition. However, naturally occurring multimodal data is often imperfect as a result…

Knowledge Base Question Answering (KBQA) systems have the goal of answering complex natural language questions by reasoning over relevant facts retrieved from Knowledge Bases (KB). One of the major challenges faced by these systems is their…

Fact verification based on structured data is challenging as it requires models to understand both natural language and symbolic operations performed over tables. Although pre-trained language models have demonstrated a strong capability in…

计算与语言 · 计算机科学 2021-09-24 Xiaoyu Yang , Xiaodan Zhu

We present a new method for online prediction and learning of tensors ($N$-way arrays, $N >2$) from sequential measurements. We focus on the specific case of 3-D tensors and exploit a recently developed framework of structured tensor…

机器学习 · 统计学 2015-07-30 John Pothier , Josh Girson , Shuchin Aeron

Encoding facts as representations of entities and binary relationships between them, as learned by knowledge graph representation models, is useful for various tasks, including predicting new facts, question answering, fact checking and…

机器学习 · 计算机科学 2022-02-01 Ivana Balažević

Learning how to predict future events from patterns of past events is difficult when the set of possible event types is large. Training an unrestricted neural model might overfit to spurious patterns. To exploit domain-specific knowledge of…

机器学习 · 计算机科学 2020-08-18 Hongyuan Mei , Guanghui Qin , Minjie Xu , Jason Eisner

The prediction of periodical time-series remains challenging due to various types of data distortions and misalignments. Here, we propose a novel model called Temporal embedding-enhanced convolutional neural Network (TeNet) to learn…

机器学习 · 计算机科学 2022-02-09 Jiajun Liu , Kun Zhao , Brano Kusy , Ji-rong Wen , Raja Jurdak

Event series, such as the Wimbledon Championships and the US presidential elections, represent important happenings in key societal areas including sports, culture and politics. However, semantic reference sources, such as Wikidata, DBpedia…

社会与信息网络 · 计算机科学 2019-09-16 Simon Gottschalk , Elena Demidova