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The link prediction task on knowledge graphs without explicit negative triples in the training data motivates the usage of rank-based metrics. Here, we review existing rank-based metrics and propose desiderata for improved metrics to…

Machine Learning · Computer Science 2022-04-20 Charles Tapley Hoyt , Max Berrendorf , Mikhail Galkin , Volker Tresp , Benjamin M. Gyori

Knowledge graphs have emerged as an important model for studying complex multi-relational data. This has given rise to the construction of numerous large scale but incomplete knowledge graphs encoding information extracted from various…

Machine Learning · Computer Science 2018-07-24 Rakshit Trivedi , Bunyamin Sisman , Jun Ma , Christos Faloutsos , Hongyuan Zha , Xin Luna Dong

Here we present a holistic approach for data exploration on dense knowledge graphs as a novel approach with a proof-of-concept in biomedical research. Knowledge graphs are increasingly becoming a vital factor in knowledge mining and…

Artificial Intelligence · Computer Science 2019-12-16 Jens Dörpinghaus , Alexander Apke , Vanessa Lage-Rupprecht , Andreas Stefan

In this paper, we propose a method for knowledge graph construction in power distribution networks. This method leverages entity features, which involve their semantic, phonetic, and syntactic characteristics, in both the knowledge graph of…

Computation and Language · Computer Science 2024-01-30 Xiang Li , Che Wang , Bing Li , Hao Chen , Sizhe Li

Knowledge graphs are widely used as a typical resource to provide answers to factoid questions. In simple question answering over knowledge graphs, relation extraction aims to predict the relation of a factoid question from a set of…

Computation and Language · Computer Science 2020-07-07 Amin Abolghasemi , Saeedeh Momtazi

This paper addresses the problems of missing reasoning chains and insufficient entity-level semantic understanding in large language models when dealing with tasks that require structured knowledge. It proposes a fine-tuning algorithm…

Computation and Language · Computer Science 2025-08-21 Wuyang Zhang , Yexin Tian , Xiandong Meng , Mengjie Wang , Junliang Du

Knowledge Graph (KG) and attention mechanism have been demonstrated effective in introducing and selecting useful information for weakly supervised methods. However, only qualitative analysis and ablation study are provided as evidence. In…

Computation and Language · Computer Science 2021-11-19 Zikun Hu , Yixin Cao , Lifu Huang , Tat-Seng Chua

Accurate retrieval of the power equipment information plays an important role in guiding the full-lifecycle management of power system assets. Because of data duplication, database decentralization, weak data relations, and sluggish data…

Artificial Intelligence · Computer Science 2019-04-30 Yachen Tang , Tingting Liu , Guangyi Liu , Jie Li , Renchang Dai , Chen Yuan

Graph neural networks are prominent models for representation learning over graph-structured data. While the capabilities and limitations of these models are well-understood for simple graphs, our understanding remains incomplete in the…

Machine Learning · Computer Science 2023-10-27 Xingyue Huang , Miguel Romero Orth , İsmail İlkan Ceylan , Pablo Barceló

While neural networks have been used extensively to make substantial progress in the machine translation task, they are known for being heavily dependent on the availability of large amounts of training data. Recent efforts have tried to…

Computation and Language · Computer Science 2019-02-26 Diego Moussallem , Mihael Arčan , Axel-Cyrille Ngonga Ngomo , Paul Buitelaar

This paper presents a contextualized graph attention network that combines edge features and multiple sub-graphs for improving relation extraction. A novel method is proposed to use multiple sub-graphs to learn rich node representations in…

Computation and Language · Computer Science 2020-04-23 Angrosh Mandya , Danushka Bollegala , Frans Coenen

Relation extraction is an important but challenging task that aims to extract all hidden relational facts from the text. With the development of deep language models, relation extraction methods have achieved good performance on various…

Computation and Language · Computer Science 2022-08-17 Sheng Zhang , Patrick Ng , Zhiguo Wang , Bing Xiang

The ability of knowledge graphs to represent complex relationships at scale has led to their adoption for various needs including knowledge representation, question-answering, and recommendation systems. Knowledge graphs are often…

Computation and Language · Computer Science 2023-05-18 Jason Youn , Ilias Tagkopoulos

Intensive Care Units (ICU) require comprehensive patient data integration for enhanced clinical outcome predictions, crucial for assessing patient conditions. Recent deep learning advances have utilized patient time series data, and fusion…

Machine Learning · Computer Science 2023-11-14 Samyak Jain , Manuel Burger , Gunnar Rätsch , Rita Kuznetsova

Connections between relations in relation extraction, which we call class ties, are common. In distantly supervised scenario, one entity tuple may have multiple relation facts. Exploiting class ties between relations of one entity tuple…

Artificial Intelligence · Computer Science 2017-08-08 Hai Ye , Wenhan Chao , Zhunchen Luo , Zhoujun Li

Knowledge graphs can represent information about the real-world using entities and their relations in a structured and semantically rich manner and they enable a variety of downstream applications such as question-answering, recommendation…

Computation and Language · Computer Science 2023-05-16 Hanieh Khorashadizadeh , Nandana Mihindukulasooriya , Sanju Tiwari , Jinghua Groppe , Sven Groppe

Exploring the effects a chemical compound has on a species takes a considerable experimental effort. Appropriate methods for estimating and suggesting new effects can dramatically reduce the work needed to be done by a laboratory. In this…

Artificial Intelligence · Computer Science 2019-11-12 Erik Bryhn Myklebust , Ernesto Jimenez-Ruiz , Jiaoyan Chen , Raoul Wolf , Knut Erik Tollefsen

Knowledge graphs (KGs) of real-world facts about entities and their relationships are useful resources for a variety of natural language processing tasks. However, because knowledge graphs are typically incomplete, it is useful to perform…

Computation and Language · Computer Science 2020-10-28 Dat Quoc Nguyen

The continuous growth of scientific literature brings innovations and, at the same time, raises new challenges. One of them is related to the fact that its analysis has become difficult due to the high volume of published papers for which…

Computation and Language · Computer Science 2020-11-06 Danilo Dessì , Francesco Osborne , Diego Reforgiato Recupero , Davide Buscaldi , Enrico Motta

In this paper, we conduct an empirical investigation of neural query graph ranking approaches for the task of complex question answering over knowledge graphs. We experiment with six different ranking models and propose a novel…

Machine Learning · Computer Science 2018-11-06 Gaurav Maheshwari , Priyansh Trivedi , Denis Lukovnikov , Nilesh Chakraborty , Asja Fischer , Jens Lehmann