About

Jianer Chen is a Professor in the Department of Computer Science & Engineering at Texas A&M University. His research interests include algorithms and complexity, computer graphics, bioinformatics, and computer networks. Dr. Chen has received numerous awards, including the AFS Distinguished Faculty Achievement Award at both the university and college levels, the E.D. Brockett Professorship Award, and the Eugene E. Webb '43 Faculty Fellow, among others. He holds a Ph.D. in Mathematics from Columbia University and a Ph.D. in Computer Science from New York University, along with multiple other degrees in Mathematics and Computer Science. His scholarly work involves developing algorithms and computational methods, contributing significantly to theoretical computer science and related fields.

Research topics

• Computer Security
• Computer Science
• Telecommunications
• Computer network
• Psychology
• Neuroscience
• Physics
• Distributed computing
• Medicine
• Physical medicine and rehabilitation

Selected publications

• Effectiveness of repetitive transcranial magnetic stimulation combined with intelligent Gait-Adaptability Training in improving lower limb function and brain symmetry after subacute stroke: a preliminary study

  Journal of Stroke and Cerebrovascular Diseases · 2024-08-22 · 6 citations

  articleSenior author
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• A Modified de Casteljau Subdivision that Supports Smooth Stitching with Hierarchically Organized Bicubic Bezier Patches

  arXiv (Cornell University) · 2024-02-06

  preprintOpen accessSenior author

  One of the theoretically intriguing problems in computer-aided geometric modeling comes from the stitching of the tensor product Bezier patches. When they share an extraordinary vertex, it is not possible to obtain continuity C1 or G1 along the edges emanating from that extraordinary vertex. Unfortunately, this stitching problem cannot be solved by using higher degree or rational polynomials. In this paper, we present a modified de Casteljau subdivision algorithm that can provide a solution to this problem. Our modified de Casteljau subdivision, when combined with topological modeling, provides a framework for interactive real-time modeling of piecewise smooth manifold meshes with arbitrary topology. The main advantage of the modified subdivision is that the continuity C1 on a given boundary edge does not depend on the positions of the control points on other boundary edges. The modified subdivision allows us to obtain the desired C1 continuity along the edges emanating from the extraordinary vertices along with the desired G1 continuity in the extraordinary vertices.

  PublisherOA PDFDOI

• Projective Holder-Minkowski Colors: A Generalized Set of Commutative & Associative Operations with Inverse Elements for Representing and Manipulating Colors

  arXiv (Cornell University) · 2024-02-03

  preprintOpen accessSenior author

  One of the key problems in dealing with color in rendering, shading, compositing, or image manipulation is that we do not have algebraic structures that support operations over colors. In this paper, we present an all-encompassing framework that can support a set of algebraic structures with associativity, commutativity, and inverse properties. To provide these three properties, we build our algebraic structures on an extension of projective space by allowing for negative and complex numbers. These properties are important for (1) manipulating colors as periodic functions, (2) solving inverse problems dealing with colors, and (3) being consistent with the wave representation of the color. Allowance of negative and complex numbers is not a problem for practical applications, since we can always convert the results into desired range for display purposes as we do in High Dynamic Range imaging. This set of algebraic structures can be considered as a generalization of the Minkowski norm Lp in projective space. These structures also provide a new version of the generalized Holder average with associativity property. Our structures provide inverses of any operation by allowing for negative and complex numbers. These structures provide all properties of the generalized Holder average by providing a continuous bridge between the classical weighted average, harmonic mean, maximum, and minimum operations using a single parameter p.

  PublisherOA PDFDOI

• On optimal streaming kernelization algorithms

  Science China Information Sciences · 2024-07-16 · 2 citations

  articleSenior author
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• Implications of neuromuscular electrical stimulation on gait ability, balance and kinematic parameters after stroke: a systematic review and meta-analysis

  Journal of NeuroEngineering and Rehabilitation · 2024-09-18 · 16 citations

  reviewOpen accessSenior author

  INTRODUCTIN: Improper gait patterns, impaired balance and foot drop consistently plague stroke survivors, preventing them from walking independently and safely. Neuromuscular electrical stimulation (NMES) technology can help patients reactivate their muscles and regain motor coordination. This study aims to systematically review and summarize the evidence for the potential benefits of NMES on the improvement of gait patterns after stroke. EVIDENCE ACQUISITION: PubMed, Cochrane Library, Embase, Science Direct and Web of Science were systematically searched until April 2024, to identify randomized controlled trials with the following criteria: stroke survivors as participants; NMES as intervention; conventional rehabilitation as a comparator; and gait assessment, through scales or quantitative parameters, as outcome measures. EVIDENCE SYNTHESIS: 29 publications involving 1711 patients met the inclusion criteria. Meta-analysis showed no significant differences in Ten-meter walk test, Fugl-Meyer assessment lower extremity, Modified Ashworth Assessment and asymmetry between the NMES group and the control group. Besides, NMES was associated with changes in outcome indicators such as quantitative gait analysis speed [SMD = 0.53, 95% CI (0.20, 0.85), P = 0.001], cadence [SMD = 0.76, 95% CI (0.32, 1.20), P = 0.0008], affected side step length [SMD = 0.73, 95% CI (0.16, 1.31), P = 0.01], angle of ankle dorsiflexion [WMD = 1.57, 95% CI (0.80, 2.33), P < 0.0001], Six-Minute Walk Test [WMD = 14.83, 95% CI (13.55, 16.11), P<0.00001]. According to the PEDro scale, 21 (72.4%) studies were of high quality and 8 were of moderate quality (27.6%). CONCLUSIONS: Taken together, the review synthesis indicated that NMES might play a potential role in stroke-induced walking dysfunction. And NMES may be superior for survivors in the chronic phase than the acute and subacute phases, and the efficacy of short sessions received by patients was greater than that of those who participated in a longer session. Additionally, further comparisons of the effects of NMES with different types or stimulation frequencies may provide unexpected benefits.

  PublisherDOI

• Space limited linear-time graph algorithms on big data

  Theoretical Computer Science · 2024-02-28 · 2 citations

  article1st authorCorresponding
  PublisherDOI

• Complexity Issues on PTAS

  2024-09-28

  book-chapter1st authorCorresponding
  PublisherDOI

• A wearable knee rehabilitation system based on graphene textile composite sensor: Implementation and validation

  Engineering Applications of Artificial Intelligence · 2024-07-13 · 9 citations

  articleSenior author
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• Nearly Time-Optimal Kernelization Algorithms for the Line-Cover Problem with Big Data

  Algorithmica · 2024-05-09

  article1st authorCorresponding
  PublisherDOI

• Application Analysis of Multiple Neurons Connected with Fast Inhibitory Synapses

  Journal of Bionic Engineering · 2024-05-14

  articleSenior author
  PublisherDOI

Recent grants

• Studies on New Algorithmic Techniques for Parameterized Computation

  NSF · $150k · 2008–2011

• AF: Small: Topological Graph Theory Revisited: With Applications in Computer Graphics

  NSF · $403k · 2009–2013

• Computational Upper and Lower Bounds via Parameterized Complexity

  NSF · $156k · 2004–2008

Frequent coauthors

• Jianxin Wang

  Central South University

  175 shared

• Iyad Kanj

  58 shared

• Qilong Feng

  47 shared

• Minzhu Xie

  Ministry of Education of the People's Republic of China

  38 shared

• Ergün Akleman

  38 shared

• Guojun Wang

  Taizhou Vocational and Technical College

  38 shared

• Ge Xia

  38 shared

• Chen Song-qiao

  Harbin Institute of Technology

  31 shared

Awards & honors

• AFS Distinguished Faculty Achievement Award (university leve…
• AFS Distinguished Faculty Achievement Award (college level),…
• E.D. Brockett Professorship Award, College of Engineering, T…
• Eugene E. Webb '43 Faculty Fellow, Texas A&M University (200…
• AFS Distinguished Faculty Achievement Award (college level),…