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Mattia G. Bergomi and Massimo Ferri
Among the various generalizations of persistent topology, that based on rank functions and leading to indexing-aware functions appears to be particularly suited to catching graph-theoretical properties without the need for a simplicial construction and a...
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Jiawei Kang, Shangwen Yang, Xiaoxuan Shan, Jie Bao and Zhao Yang
Exploring the delay causality between airports and comparing the delay propagation patterns across different airport networks is critical to better understand delay propagation mechanisms and provide effective delay mitigation strategies. A novel attenti...
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Enyu Yu, Yan Fu, Junlin Zhou, Hongliang Sun and Duanbing Chen
Many real-world systems can be expressed in temporal networks with nodes playing different roles in structure and function, and edges representing the relationships between nodes. Identifying critical nodes can help us control the spread of public opinio...
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Yusef Ahsini, Pablo Díaz-Masa, Belén Inglés, Ana Rubio, Alba Martínez, Aina Magraner and J. Alberto Conejero
With the increasing demand for online shopping and home delivery services, optimizing the routing of electric delivery vehicles in urban areas is crucial to reduce environmental pollution and improve operational efficiency. To address this opportunity, w...
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Yuanyou Ou and Baoning Niu
The dual-channel graph collaborative filtering recommendation algorithm (DCCF) suppresses the over-smoothing problem and overcomes the problem of expansion in local structures only in graph collaborative filtering. However, DCCF has the following problem...
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Eric Hsueh-Chan Lu and You-Ru Lin
With the rise in the Internet of Things (IOT), mobile devices and Location-Based Social Network (LBSN), abundant trajectory data have made research on location prediction more popular. The check-in data shared through LBSN hide information related to lif...
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David Rajaratnam, Torsten Schaub, Philipp Wanko, Kai Chen, Sirui Liu and Tran Cao Son
A warehouse delivery problem consists of a set of robots that undertake delivery jobs within a warehouse. Items are moved around the warehouse in response to events. A solution to a warehouse delivery problem is a collision-free schedule of robot movemen...
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Jan Sawicki, Maria Ganzha, Marcin Paprzycki and Yutaka Watanobe
As the largest open social medium on the Internet, Reddit is widely studied in the scientific literature. Due to its structured form and division into topical subfora (subreddits), conducted research often concerns connections and interactions between us...
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Joaquim Espada, Alexandre P. Francisco, Tatiana Rocher, Luís M. S. Russo and Cátia Vaz
Let ??=(??,??)
G
=
(
V
,
E
)
be a directed and weighted graph with a vertex set V of size n and an edge set E of size m such that each edge (??,??)???
(
u
,
v
)
?
E
has a real-valued weight ??(??,??)
w
(
u
,
c
)
. An arborescence in G is a subgraph ??=...
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Tomohiro Saito, Ryuichi Shibasaki, Shinsuke Murakami, Kenmei Tsubota and Takuma Matsuda
This study applied graph theory to conduct an empirical analysis of the evolution of global maritime container shipping networks, mainly focusing on the 1970s. In addition to analyzing the change in overall structures of the networks over the long term (...
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