455 citations · 864 across the 28 of their papers we have counts for
28 papers
Ecological networks of viable species with degree-dependent interaction
Hae Seong Lee, Deok-Sun Lee, Sang Hoon Lee +2
The generalized Lotka-Volterra (GLV) framework, recently advanced by dynamical mean-field theory, enables the systematic analysis of large ecological networks. When combined with s…
Evaluating the impact of incomplete contact tracing data on urban epidemic dynamics
Min-Kyung Chae, Woo-Sik Son, Sang Hoon Lee
Contact tracing (CT) is a frontline measure against emerging epidemics, yet in practice it is never complete. The quantitative impact of missing information -- such as untraced cas…
Effects of relational graph modularity and depth on the learning performance of neural networks
Yash Arya, Sang Hoon Lee
In recent years, graph-based machine learning techniques, such as reinforcement learning and graph neural networks, have garnered significant attention. While some recent studies h…
Global decomposition of networks into multiple cores formed by local hubs
Wonhee Jeong, Unjong Yu, Sang Hoon Lee
Networks are ubiquitous in various fields, representing systems where nodes and their interconnections constitute their intricate structures. We introduce a network decomposition s…
Incorporating Heterogeneous Interactions for Ecological Biodiversity
Jong Il Park, Deok-Sun Lee, Sang Hoon Lee +1
Understanding the behaviors of ecological systems is challenging given their multi-faceted complexity. To proceed, theoretical models such as Lotka-Volterra dynamics with random in…
Renormalization of Complex Networks with Partition Functions
Sungwon Jung, Sang Hoon Lee, Jaeyoon Cho
While renormalization groups are fundamental in physics, renormalization of complex networks remains vague in its conceptual definition and methodology. Here, we propose a novel st…
Revisiting small-world network models: Exploring technical realizations and the equivalence of the Newman-Watts and Harary models
Seora Son, Eun Ji Choi, Sang Hoon Lee
We address the relatively less known facts on the equivalence and technical realizations surrounding two network models showing the "small-world" property, namely the Newman-Watts…
Exploring 3D community inconsistency in human chromosome contact networks
Dolores Bernenko, Sang Hoon Lee, Ludvig Lizana
Researchers developed chromosome capture methods such as Hi-C to better understand DNA's 3D folding in nuclei. The Hi-C method captures contact frequencies between DNA segment pair…
Degree distributions under general node removal: Power-law or Poisson?
Mi Jin Lee, Jung-Ho Kim, Kwang-Il Goh +3
Perturbations made to networked systems may result in partial structural loss, such as a blackout in a power-grid system. Investigating the resultant disturbance in network propert…
Refinement for community structures of bipartite networks
Sang Hoon Lee
Bipartite networks composed of dichotomous node sets are ubiquitous in nature and society. Partly for simplicity's sake, many studies have focused on their projection onto their un…
Mesoscale properties of mutualistic networks in ecosystems
Sang Hoon Lee
Uncovering structural properties of ecological networks is a crucial starting point of studying the system's stability in response to various types of perturbations. We analyze pol…
Uncovering hidden dependency in weighted networks via information entropy
Mi Jin Lee, Eun Lee, Byunghwee Lee +3
Interactions between elements, which are usually represented by networks, have to delineate potentially unequal relationships in terms of their relative importance or direction. Th…
Multistability and Variations in Basin of Attraction in Power-grid Systems
Heetae Kim, Sang Hoon Lee, Jörn Davidsen +1
Power grids sustain modern society by supplying electricity and thus their stability is a crucial factor for our civilization. The dynamic stability of a power grid is usually quan…
Effect of antipsychotics on community structure in functional brain networks
Ryan Flanagan, Lucas Lacasa, Emma K. Towlson +2
Schizophrenia, a mental disorder that is characterized by abnormal social behavior and failure to distinguish one's own thoughts and ideas from reality, has been associated with st…
Early onset of structural inequality in the formation of collaborative knowledge, Wikipedia
Jinhyuk Yun, Sang Hoon Lee, Hawoong Jeong
We perform an in-depth analysis on the inequality in 863 Wikimedia projects. We take the complete editing history of 267,304,095 Wikimedia items until 2016, which not only covers e…
Intellectual interchanges in the history of the massive online open-editing encyclopedia, Wikipedia
Jinhyuk Yun, Sang Hoon Lee, Hawoong Jeong
Wikipedia is a free Internet encyclopedia with an enormous amount of content. This encyclopedia is written by volunteers with various backgrounds in a collective fashion; anyone ca…
Time-dependent community structure in legislation cosponsorship networks in the Congress of the Republic of Peru
Sang Hoon Lee, José Manuel Magallanes, Mason A. Porter
We study community structure in time-dependent legislation cosponsorship networks in the Peruvian Congress, and we compare them briefly to legislation cosponsorship networks in the…
Community consistency determines the stability transition window of power-grid nodes
Heetae Kim, Sang Hoon Lee, Petter Holme
The synchrony of electric power systems is important in order to maintain stable electricity supply. Recently, the measure basin stability was introduced to quantify a node's abili…
Detection of Core-Periphery Structure in Networks Using Spectral Methods and Geodesic Paths
Mihai Cucuringu, Puck Rombach, Sang Hoon Lee +1
We introduce several novel and computationally efficient methods for detecting "core--periphery structure" in networks. Core--periphery structure is a type of mesoscale structure t…
Mesoscale analyses of fungal networks as an approach for quantifying phenotypic traits
Sang Hoon Lee, Mark D. Fricker, Mason A. Porter
We investigate the application of mesoscopic response functions (MRFs) to characterize a large set of networks of fungi and slime moulds grown under a wide variety of different exp…
Density-based and transport-based core-periphery structures in networks
Sang Hoon Lee, Mihai Cucuringu, Mason A. Porter
Networks often possess mesoscale structures, and studying them can yield insights into both structure and function. It is most common to study community structure, but numerous oth…
Matchmaker, Matchmaker, Make Me a Match: Migration of Populations via Marriages in the Past
Sang Hoon Lee, Robyn Ffrancon, Daniel M. Abrams +2
The study of human mobility is both of fundamental importance and of great potential value. For example, it can be leveraged to facilitate efficient city planning and improve preve…
Phase-shift inversion in oscillator systems with periodically switching couplings
Sang Hoon Lee, Sungmin Lee, Seung-Woo Son +1
A system's response to external periodic changes can provide crucial information about its dynamical properties. We investigate the synchronization transition, an archetypical exam…
Global organization of protein complexome in the yeast Saccharomyces cerevisiae
Sang Hoon Lee, Pan-Jun Kim, Hawoong Jeong
Proteins in organisms, rather than act alone, usually form protein complexes to perform cellular functions. We analyze the topological network structure of protein complexes and th…