Results 21 to 30 of about 2,137,172 (311)

Node Importance Identification for Temporal Networks Based on Optimized Supra-Adjacency Matrix

open access: yesEntropy, 2022
The research on node importance identification for temporal networks has attracted much attention. In this work, combined with the multi-layer coupled network analysis method, an optimized supra-adjacency matrix (OSAM) modeling method was proposed.
Rui Liu   +4 more
doaj   +1 more source

Spanning Adjacency Oracles in Sublinear Time [PDF]

open access: yesInformation Technology Convergence and Services, 2023
Suppose we are given an $n$-node, $m$-edge input graph $G$, and the goal is to compute a spanning subgraph $H$ on $O(n)$ edges. This can be achieved in linear $O(m + n)$ time via breadth-first search.
Gregory Bodwin, Henry L. Fleischmann
semanticscholar   +1 more source

TriangleConv: A Deep Point Convolutional Network for Recognizing Building Shapes in Map Space

open access: yesISPRS International Journal of Geo-Information, 2021
The classification and recognition of the shapes of buildings in map space play an important role in spatial cognition, cartographic generalization, and map updating.
Chun Liu   +5 more
doaj   +1 more source

Evaluating the Systemic Importance of China’s Banks via Adjacency Information Entropy

open access: yesDiscrete Dynamics in Nature and Society, 2022
Information entropy can be utilized to assess the complexity of the Banking System and the uncertainty of association information between banks. Based on information entropy and the balance sheet data of 167 banks from 2011 to 2020, we proposed a ...
Junzhi Zhang, Lei Chen
doaj   +1 more source

Spectral Graph Embedding for Dimension Reduction in Financial Risk Assessment [PDF]

open access: yesMathematics and Modeling in Finance, 2021
The economic downturn in recent years has had a significant negative impact on corporates performance. In the last two years, as in the last years of 2010s, many companies have been influenced by the economic conditions and some have gone bankrupt.
Hossein Teimoori Faal, Meyssam Bagheri
doaj   +1 more source

Development of an open-source software for isomer enumeration

open access: yesJournal of Cheminformatics, 2023
This article documents enu, a freely-downloadable, open-source and stand-alone program written in C++ for the enumeration of the constitutional isomers and stereoisomers of a molecular formula.
Salomé R. Rieder   +3 more
doaj   +1 more source

Flat bands of periodic graphs [PDF]

open access: yesJournal of Mathematics and Physics, 2023
We study flat bands of periodic graphs in a Euclidean space. These are infinitely degenerate eigenvalues of the corresponding adjacency matrix, with eigenvectors of compact support.
Mostafa Sabri, Pierre Youssef
semanticscholar   +1 more source

Storage method of multi-channel lidar data based on tree structure

open access: yesScientific Reports, 2022
The multi-channel lidar has fast acquisition speed, large data volume, high dimension, and vital real-time storage, which makes it challenging to be met using the traditional lidar data storage methods. This paper presents a novel approach to storing the
Hao Chen   +5 more
doaj   +1 more source

Modeling and Planning Multimodal Transport Paths for Risk and Energy Efficiency Using AND/OR Graphs and Discrete Ant Colony Optimization

open access: yesIEEE Access, 2020
Path sequence selection is important for multimodal transport processes. AND/OR graphs (AOG) have been applied to describe practical multimodal transport route planning problems by using ‘AND’ and ‘OR’ matrices.
Zhanzhong Wang   +3 more
doaj   +1 more source

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