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In this work, we fully define the existing relationships between traditional optimality criteria and the connectivity of the underlying pose-graph in Active SLAM, characterizing, therefore, the connection between Graph Theory and the Theory…

Robotics · Computer Science 2022-04-25 Julio A. Placed , José A. Castellanos

With the emergence of graph databases, the task of frequent subgraph discovery has been extensively addressed. Although the proposed approaches in the literature have made this task feasible, the number of discovered frequent subgraphs is…

Databases · Computer Science 2013-08-16 Wajdi Dhifli , Mohamed Moussaoui , Rabie Saidi , Engelbert Mephu Nguifo

Graph Neural Network (GNNs) based methods have recently become a popular tool to deal with graph data because of their ability to incorporate structural information. The only hurdle in the performance of GNNs is the lack of labeled data.…

Machine Learning · Computer Science 2022-08-26 Maria Marrium , Arif Mahmood

This study aims to improve knowledge-based question-answering (QA) systems by overcoming the limitations of existing Retrieval-Augmented Generation (RAG) models and implementing an advanced RAG system based on Graph technology to develop…

Artificial Intelligence · Computer Science 2024-10-04 Cheonsu Jeong

Real-world optimization problems are generally not just black-box problems, but also involve mixed types of inputs in which discrete and continuous variables coexist. Such mixed-space optimization possesses the primary challenge of modeling…

Machine Learning · Computer Science 2022-02-09 Jaeyeon Ahn , Taehyeon Kim , Seyoung Yun

Graph classification, which aims to identify the category labels of graphs, plays a significant role in drug classification, toxicity detection, protein analysis etc. However, the limitation of scale in the benchmark datasets makes it easy…

Machine Learning · Computer Science 2021-04-06 Jiajun Zhou , Jie Shen , Shanqing Yu , Guanrong Chen , Qi Xuan

Feature selection can efficiently identify the most informative features with respect to the target feature used in training. However, state-of-the-art vector-based methods are unable to encapsulate the relationships between feature samples…

Machine Learning · Computer Science 2018-09-11 Lixin Cui , Lu Bai , Zhihong Zhang , Yue Wang , Edwin R. Hancock

Continual graph learning (CGL) is an important and challenging task that aims to extend static GNNs to dynamic task flow scenarios. As one of the mainstream CGL methods, the experience replay (ER) method receives widespread attention due to…

Machine Learning · Computer Science 2024-08-09 Jinhui Pang , Changqing Lin , Xiaoshuai Hao , Rong Yin , Zixuan Wang , Zhihui Zhang , Jinglin He , Huang Tai Sheng

Fine-tuning a pre-trained deep neural network has become a successful paradigm in various machine learning tasks. However, such a paradigm becomes particularly challenging with tabular data when there are discrepancies between the feature…

Machine Learning · Computer Science 2023-10-24 Qi-Le Zhou , Han-Jia Ye , Le-Ye Wang , De-Chuan Zhan

Recently, neural models for information retrieval are becoming increasingly popular. They provide effective approaches for product search due to their competitive advantages in semantic matching. However, it is challenging to use…

Information Retrieval · Computer Science 2019-01-25 Yuan Zhang , Dong Wang , Yan Zhang

Faced with data-driven policies, individuals will manipulate their features to obtain favorable decisions. While earlier works cast these manipulations as undesirable gaming, recent works have adopted a more nuanced causal framing in which…

Machine Learning · Computer Science 2023-02-22 Tom Yan , Shantanu Gupta , Zachary Lipton

We present a novel approach for graph classification based on tabularizing graph data via new variants of the Weisfeiler-Leman algorithm and then applying methods for tabular data. The variants are obtained by modifying the underlying…

Machine Learning · Computer Science 2026-05-25 Reijo Jaakkola , Tomi Janhunen , Antti Kuusisto , Magdalena Ortiz , Matias Selin , Mantas Šimkus

Data selection has emerged as a crucial downstream application of data valuation. While existing data valuation methods have shown promise in selection tasks, the theoretical foundations and full potential of using data values for selection…

Artificial Intelligence · Computer Science 2025-02-10 Hongliang Chi , Qiong Wu , Zhengyi Zhou , Jonathan Light , Emily Dodwell , Yao Ma

Graph Neural Networks (GNNs) have become the backbone for a myriad of tasks pertaining to graphs and similar topological data structures. While many works have been established in domains related to node and graph classification/regression…

Machine Learning · Computer Science 2022-09-07 Appan Rakaraddi , Siew Kei Lam , Mahardhika Pratama , Marcus De Carvalho

Data-driven machine learning approaches have recently been proposed to facilitate wireless network optimization by learning latent knowledge from historical optimization instances. However, existing methods do not well handle the topology…

Networking and Internet Architecture · Computer Science 2021-01-06 Shuai Zhang , Bo Yin , Yu Cheng

Graph problems such as traveling salesman problem, or finding minimal Steiner trees are widely studied and used in data engineering and computer science. Typically, in real-world applications, the features of the graph tend to change over…

Machine Learning · Computer Science 2022-01-14 Udesh Gunarathna , Renata Borovica-Gajic , Shanika Karunasekara , Egemen Tanin

Graph pattern matching algorithms to handle million-scale dynamic graphs are widely used in many applications such as social network analytics and suspicious transaction detections from financial networks. On the other hand, the computation…

Databases · Computer Science 2019-07-10 Hiroki Kanezashi , Toyotaro Suzumura , Dario Garcia-Gasulla , Min-hwan Oh , Satoshi Matsuoka

Can we learn how to explore unknown spaces efficiently? To answer this question, we study the problem of Online Graph Exploration, the online version of the Traveling Salesperson Problem. We reformulate graph exploration as a reinforcement…

Machine Learning · Computer Science 2021-04-07 Ioannis Chiotellis , Daniel Cremers

Exploratory data analytics (EDA) is a sequential decision making process where analysts choose subsequent queries that might lead to some interesting insights based on the previous queries and corresponding results. Data processing systems…

Machine Learning · Computer Science 2022-12-14 Shaddy Garg , Subrata Mitra , Tong Yu , Yash Gadhia , Arjun Kashettiwar

We study the problem of balancing effectiveness and efficiency in automated feature selection. After exploring many feature selection methods, we observe a computational dilemma: 1) traditional feature selection is mostly efficient, but…

Machine Learning · Computer Science 2020-10-07 Wei Fan , Kunpeng Liu , Hao Liu , Yong Ge , Hui Xiong , Yanjie Fu
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