Zhengzhang Chen

Works (8)

Updated: July 5th, 2023 15:46

2014 article

Solving the maximum duo-preservation string mapping problem with linear programming

Chen, W., Chen, Z., Samatova, N. F., Peng, L., Wang, J., & Tang, M. (2014, February 22). Theoretical Computer Science.

By: W. Chen *, Z. Chen n, N. Samatova n, L. Peng *, J. Wang * & M. Tang*

author keywords: Approximation algorithm; Constrained maximum induced subgraph problem; Duo-preservation string mapping; Linear programming; Integer programming; Randomized rounding
topics (OpenAlex): Genome Rearrangement Algorithms; Algorithms and Data Compression; DNA and Biological Computing
TL;DR: The maximum duo-preservation string mapping problem (MPSM), which is complementary to the minimum common string partition problem (MCSP), is introduced and it is shown that both CMIS and CNIS are NP-complete. (via Semantic Scholar)
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UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2012 article

Discovery of extreme events-related communities in contrasting groups of physical system networks

Chen, Z., Hendrix, W., Guan, H., Tetteh, I. K., Choudhary, A., Semazzi, F., & Samatova, N. F. (2012, August 31). Data Mining and Knowledge Discovery.

By: Z. Chen n, W. Hendrix n, H. Guan*, I. Tetteh n, A. Choudhary *, F. Semazzi n, N. Samatova n

author keywords: Spatio-temporal data mining; Complex network analysis; Community detection; Comparative analysis; Networkmotif detection; Extreme event prediction
topics (OpenAlex): Complex Network Analysis Techniques; Opinion Dynamics and Social Influence; Human Mobility and Location-Based Analysis
TL;DR: This paper forms a novel problem—detection of predictive and phase-biased communities in contrasting groups of networks, and proposes an efficient and effective machine learning solution for finding such anomalous communities. (via Semantic Scholar)
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UN Sustainable Development Goal Categories
13. Climate Action (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2012 article

Hierarchical Classifier-Regression Ensemble for Multi-phase Non-linear Dynamic System Response Prediction: Application to Climate Analysis

Gonzalez, D. L., Chen, Z., Tetteh, I. K., Pansombut, T., Semazzi, F., Kumar, V., … Samatova, N. F. (2012, December 1).

By: D. Gonzalez n, Z. Chen n, I. Tetteh n, T. Pansombut n, F. Semazzi n, V. Kumar *, A. Melechko n, N. Samatova n

topics (OpenAlex): Tropical and Extratropical Cyclones Research; Meteorological Phenomena and Simulations; Time Series Analysis and Forecasting
TL;DR: This paper proposes a hybrid approach that first predicts the phase the system is in, and then estimates the magnitude of the system's response using the regression model optimized for this phase, designed for systems that could be characterized by multi-variate spatio-temporal data from observations, simulations, or both. (via Semantic Scholar)
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UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2011 article

Community-based anomaly detection in evolutionary networks

Chen, Z., Hendrix, W., & Samatova, N. F. (2011, October 18). Journal of Intelligent Information Systems.

By: Z. Chen n, W. Hendrix n & N. Samatova n

topics (OpenAlex): Complex Network Analysis Techniques; Bioinformatics and Genomic Networks; Evolutionary Game Theory and Cooperation
TL;DR: This work develops a parameter-free and scalable algorithm using a proposed representative-based technique to detect all six possible types of community-based anomalies: grown, shrunken, merged, split, born, and vanished communities, and detail the underlying theory required to guarantee the correctness of the algorithm. (via Semantic Scholar)
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UN Sustainable Development Goal Categories
13. Climate Action (OpenAlex)
Source: NC State University Libraries
Added: August 6, 2018

2011 article

Efficient α, β-motif finder for identification of phenotype-related functional modules

Schmidt, M. C., Rocha, A. M., Padmanabhan, K., Chen, Z., Scott, K., Mihelcic, J. R., & Samatova, N. F. (2011, November 11). BMC Bioinformatics, Vol. 12.

By: M. Schmidt n , A. Rocha *, K. Padmanabhan n, Z. Chen n, K. Scott *, J. Mihelcic *, N. Samatova n

MeSH headings : Acids / metabolism; Algorithms; Bacteria / genetics; Bacteria / metabolism; Citric Acid Cycle; Computing Methodologies; Hydrogen / metabolism; Phenotype; Proteobacteria
topics (OpenAlex): Machine Learning in Bioinformatics; Ubiquitin and proteasome pathways; Bioinformatics and Genomic Networks
TL;DR: A methodology that can identify potential statistically significant phenotype-related functional modules that are in at least α networks of phenotype-expressing organisms but appear in no more than β networks of organisms that do not exhibit the target phenotype is proposed. (via Semantic Scholar)
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UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2010 article

Detecting and Tracking Community Dynamics in Evolutionary Networks

Chen, Z., Wilson, K. A., Jin, Y., Hendrix, W., & Samatova, N. F. (2010, December 1).

By: Z. Chen n, K. Wilson n, Y. Jin n, W. Hendrix n & N. Samatova n

topics (OpenAlex): Complex Network Analysis Techniques; Evolutionary Game Theory and Cooperation; Opinion Dynamics and Social Influence
TL;DR: This paper proposes an efficient method for detecting and tracking community dynamics in evolutionary networks by introducing graph representatives and community representatives to avoid generating redundant communities and limit the search space. (via Semantic Scholar)
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UN Sustainable Development Goal Categories
2. Zero Hunger (OpenAlex)
Source: NC State University Libraries
Added: August 6, 2018

2010 journal article

Inapproximability results for equations over infinite groups

Theoretical Computer Science, 411(26-28), 2513–2519.

By: W. Chen, D. Yin & Z. Chen

Source: NC State University Libraries
Added: August 6, 2018

report

Forecaster: Forecast Oriented Feature Elimination-based Classification of Adverse Spatio-Temporal Extremes

Chen, Z., Pansombut, T., Hendrix, W., Gonzalez, D., Semazzi, F., Choudhary, A., … Samatova, N. F.

By: Z. Chen, T. Pansombut, W. Hendrix, D. Gonzalez, F. Semazzi, A. Choudhary, V. Kumar, A. Melechko, N. Samatova

Source: NC State University Libraries
Added: August 6, 2018

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