Haifeng Du

ORCID: 0000-0001-7440-1403
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Research Areas
  • Artificial Immune Systems Applications
  • Complex Network Analysis Techniques
  • Metaheuristic Optimization Algorithms Research
  • Opinion Dynamics and Social Influence
  • Advanced Algorithms and Applications
  • Network Traffic and Congestion Control
  • Software-Defined Networks and 5G
  • Wireless Communication Networks Research
  • Bioinformatics and Genomic Networks
  • Advanced Multi-Objective Optimization Algorithms
  • Advanced Decision-Making Techniques
  • Advanced Wireless Communication Techniques
  • Advanced Clustering Algorithms Research
  • Advanced Adaptive Filtering Techniques
  • Advanced Optical Network Technologies
  • Advanced Control Systems Design
  • Migration and Labor Dynamics
  • Advanced Sensor and Control Systems
  • Agriculture Sustainability and Environmental Impact
  • Environmental Impact and Sustainability
  • Protist diversity and phylogeny
  • China's Socioeconomic Reforms and Governance
  • Wireless Sensor Networks and IoT
  • Advanced Queuing Theory Analysis
  • Advanced Wireless Network Optimization

Xi'an Jiaotong University
2011-2024

Chongqing University
2023

Cornell University
2020

Beijing Jiaotong University
2005-2013

Northwest Normal University
2011

Tongji University
2009

Institute of Population, Health and Development
2009

Xidian University
2003-2008

Marcus (United States)
2008

Xi’an University
2008

Nondominated Neighbor Immune Algorithm (NNIA) is proposed for multiobjective optimization by using a novel nondominated neighbor-based selection technique, an immune inspired operator, two heuristic search operators, and elitism. The unique technique of NNIA only selects minority isolated individuals in the population. selected are then cloned proportionally to their crowding-distance values before search. By proportional cloning, pays more attention less-crowded regions current trade-off...

10.1162/evco.2008.16.2.225 article EN Evolutionary Computation 2008-06-01

Community structure is one of the most important properties in networks, and community detection has received an enormous amount attention recent years. Modularity by far used best known quality function for measuring a partition network, many algorithms are developed to optimize it. However, there resolution limit problem modularity optimization methods. In this study, memetic algorithm, named Meme-Net, proposed another function, density, which includes tunable parameter that allows explore...

10.1103/physreve.84.056101 article EN Physical Review E 2011-11-03

This article examines the impact of Covid-19 pandemic on employment migrant workers in China. Our research has estimated that nationally, at least 30–50 million migrants lost their jobs late March, far more than local urban workers. An online survey also indicates rural-hukou population have borne brunt outbreak. More 90% could not find work as February, compared to 42% for urban-hukou Those who are less educated and low skilled had a higher rate unemployment. At same time, there is serious...

10.1080/15387216.2020.1791726 article EN Eurasian Geography and Economics 2020-07-07

Using data from a 2005 survey of rural–urban migrants in Shenzhen, we investigate the intentions two groups migrants. We use birth years 1970 to 1980 as reasonable range dividing lines separate groups. For each year divide sample into those born before that and or after year. These are referred old generation new generation, respectively. Three possible development trajectories considered: settling cities, returning home seek nonagricultural job, farm. find members have stronger desires do...

10.1068/a42161 article EN Environment and Planning A Economy and Space 2010-03-01

This study conceptualizes parental migration as a dynamic family process that exposes children to absence and instability. Using detailed histories, this identifies the left‐behind trajectories of rural Chinese throughout childhood (age 1–12) examines impact on psychological well‐being ( N = 3,961). Results indicate heterogeneity in children’s experience migration, which is characterized by both persistence (prolonged absence) instability (repeated migration). A quarter experienced prolonged...

10.1111/cdev.13496 article EN Child Development 2021-01-07

Livestock constitute the world's largest anthropogenic source of methane (CH

10.1038/s41597-024-03072-y article EN cc-by Scientific Data 2024-02-28

Based on clonal selection theory, the main mechanisms of a clone in immune system, which are explored field artificial intelligence, analyzed. An system algorithm, antibody is put forward. Compared with an improved gene new algorithm shown to be evolutionary strategy capable solving complex machine learning tasks, like multi-modal optimization. Using Markov chain theories, it proved that convergent.

10.1109/icmlc.2002.1176807 article EN 2003-06-25

Abstract On the basis of modularity optimization, a genetic algorithm is proposed to detect community structure in networks by defining local search operator. The operator emphasizes two features: one that connected nodes network should be located same community, while other “local selection” inspired mechanisms efficient message delivery underlying small‐world phenomenon. results detection for some classic networks, such as Ucinet and Pajek indicate our achieves better than methodologies...

10.1002/cplx.20300 article EN Complexity 2009-11-25

The present study uses data from a 2020 survey conducted in Shaanxi Province during the COVID-19 outbreak to examine family resources and psychological well-being of four major groups Chinese children (urban, migrant, rural nonmigrant, left-behind children). results highlight complex ways which intersect with pandemic affect these different children. Family economic have generally declined across all groups, but suffered most severe shock. However, parent–child relationships for improved...

10.1080/21620555.2021.1913721 article EN Chinese Sociological Review 2021-05-07

Entropy is a very important indicator which describes the heterogeneity of networks. Two kinds structure entropies, are based on degree distribution and relative respectively, have some problems to describe characteristics network structure. Because they focus only one node or edge factors. In this paper, We consider difference between define new entropy. The theoretical analyses simulation experiments regular network, random scale-free prove that entropy more effective reflect structure,...

10.7498/aps.60.110513 article EN cc-by Acta Physica Sinica 2011-01-01

Although differentiated services (DiffServ) networks have been well discussed in the past several years, a conventional Active Queue Management (AQM) algorithm still cannot provide low-complexity and cost-effective bandwidth allocation DiffServ. In this paper, novel AQM scheme called CHOKeR is designed to protect TCP flows effectively. We adopt method from CHOKeW draw multiple packets randomly output buffer. enhances drawing factor by using multistep increase single-step decrease (MISD)...

10.1109/tii.2013.2278618 article EN IEEE Transactions on Industrial Informatics 2013-08-15

Node attributes play an important role in shaping network structures, but are generally ignored transformations of structural balance. A fully signed consisting signs edges and nodes expresses both properties relationship node attributes. In this article, we generalize the definition balance networks. We transform unbalanced by not only changing also nodes. propose a memetic algorithm to networks at lowest cost. Experiments show that our can solve problem efficiently, different attribute...

10.1002/cplx.21764 article EN Complexity 2016-02-23

The 14th Five-Year Plan of China proposes promoting urbanization construction, with counties as an important carrier. In order to evaluate the development level in Western China, this study established index system population, land, and industry, constructed coupling coordination model, selected Shaanxi Province a representative case, evaluated comprehensive its degree at county level. results show that: (1) there are two stages counties, namely “increment” “quality improvement”; (2)...

10.3390/su13041983 article EN Sustainability 2021-02-12
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