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Development of Machine Learning Methods for Accurate Prediction of Plant Disease Resistance

Engineering 2024年第9期40卷 100-110页

作者： Qi Liu Shi-min Zuo Shasha Peng Hao Zhang Ye Peng wei Li Yehui Xiong Runmao lin Zhiming Feng Huihui Li Jun Yang Guo-Liang Wang Houxiang Kang State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China Zhongshan Biological Breeding Laboratory&Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding Agricultural College of Yangzhou UniversityYangzhou 225009China Hunan Provincial Key Laboratory of Crop Germplasm Innovation and Utilization and College of Agronomy Hunan Agricultural UniversityChangsha 410128China State Key Laboratory of Crop Gene Resources and Breeding Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China College of Plant Protection Hunan Agricultural UniversityChangsha 410128China Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests Ministry of Education College of Plant ProtectionHainan UniversityHaikou 570228China MARA Key Laboratory of Surveillance and Management for Plant Quarantine Pests Department of Plant BiosecurityCollege of Plant ProtectionChina Agricultural UniversityBeijing 100193China Department of Plant Pathology Ohio State UniversityColumbusOH 43210USA

The traditional method of screening plants for disease resistance phenotype is both time-consuming and *** selection offers a potential solution to improve efficiency,but accurately predicting plant disease resistance remains a *** this study,we evaluated eight different machine learning(ML)methods,including random forest classification(RFC),support vector classifier(SVC),light gradient boosting machine(lightGBM),random forest classification plus kinship(RFC_K),support vector classification plus kinship(SVC_K),light gradient boosting machine plus kinship(lightGBM_K),deep neural network genomic prediction(DNNGP),and densely connected convolutional networks(DenseNet),for predicting plant disease *** results demonstrate that the three plus kinship(K)methods developed in this study achieved high prediction ***,these methods achieved accuracies of up to 95%for rice blast(RB),85%for rice black-streaked dwarf virus(RBSDV),and 85%for rice sheath blight(RSB)when trained and applied to the rice diversity panel I(RDPI).Furthermore,the plus K models performed well in predicting wheat blast(WB)and wheat stripe rust(WSR)diseases,with mean accuracies of up to 90%and 93%,*** assess the generalizability of our models,we applied the trained plus K methods to predict RB disease resistance in an independent population,rice diversity panel II(RDPII).Concurrently,we evaluated the RB resistance of RDPII cultivars using spray *** the predictions with the spray inoculation results,we found that the accuracy of the plus K methods reached 91%.These findings highlight the effectiveness of the plus K methods(RFC_K,SVC_K,and lightGBM_K)in accurately predicting plant disease resistance for RB,RBSDV,RSB,WB,and *** methods developed in this study not only provide valuable strategies for predicting disease resistance,but also pave the way for using machine learning to streamline genome-based crop breeding.

关键词： Predicting plant disease resistance Genomic selection Machine learning Genome-wide association study

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Toeplitz operators related to strongly singular Calderón-Zygmund operators

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Science China Mathematics 2006年第8期49卷 1048-1064页

作者： lin Yan LU Shanzhen School of Mathematical Sciences Beijing Normal University Beijing 100875 China School of Mathematical Sciences Beijing Normal University Beijing 100875 China

In this paper, the boundedness of Toeplitz operator Tb(f) related to strongly singular Calderon-Zygmund operators and Lipschitz function b∈Λβ0(Rn) is discussed from Lp(Rn) to Lq(Rn), 1/q=1/p-β0/n, and from Lp(Rn) to Triebel-Lizorkin space Fβ0,∞p. We also obtain the boundedness of generalized Toeplitz operatorθbα0 from LP(Rn) to Lq(Rn), 1/q =1/p-α0+β0/n. All the above results include the corresponding boundedness of commutators. Moreover, the boundedness of Toeplitz operator Tb(f) related to strongly singular Calderon-Zygmund operators and BMO function b is discussed on LP(Rn), 1 < p <∞.

关键词： Toeplitz operator strongly singular Calderon-Zygmund operator Lipschitz space Triebel-Lizorkin space BMO.

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ON L2 ERROR ESTIMATE FOR WEAK GALERKIN FINITE ELEMENT METHODS FOR PARABOLIC PROBLEMS

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Journal of Computational Mathematics 2014年第2期32卷 195-204页

作者： Fuzheng Gao lin Mu School of Mathematics Shandong University Jinan Shandong 250100 China Department of Mathematics Michigan State University East Lansing MI 48824 USA

A weak Galerkin finite element method with stabilization term, which is symmetric, positive definite and parameter free, was proposed to solve parabolic equations by using weakly defined gradient operators over discontinuous functions. In this paper, we derive the optimal order error estimate in L2 norm based on dual argument. Numerical experiment is conducted to confirm the theoretical results.

关键词： WG-FEMs discrete weak gradient parabolic problem error estimate.

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Static information, K-neighbor, and self-attention aggregated scheme: a transient stability prediction model with enhanced interpretability

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Protection and Control of Modern Power Systems 2023年第1期8卷 81-96页

作者： Liukai Chen lin Guan School of Electric Power South China University of TechnologyGuangzhouChina

Data-driven preventive scanning for transient stability assessment(DTSA)is a faster and more efficient solution than time-domain simulation(TDS).However,most current methods cannot balance generalization to different topolo-gies and interpretability,with simple output.A model that conforms to the physical mechanism and richer label for transient stability can increase confidence in *** a static-information,k-neighbor,and self-attention aggre-gated schema(SKETCH)is proposed in this *** only static measurements as input,SKETCH gives several explanations that are consistent with the physical mechanisms of TSA and provides results for all generator stability while predicting system stability.A module based on the self-attention mechanism is designed to solve the locality problem of a graph neural network(GNN),achieving subgraph equivalence outside the k-order *** re sults on the IEEE 39-bus system and IEEE 300-bus system indicate the superiority of SKETCH and also demonstrate the rich sample interpretation results.

关键词： Transient stability assessment(TSA) Data-driven Explainable Graph neural network(GNN) Self-attention

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Curvature notions on graphs

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Frontiers of Mathematics in China 2016年第5期11卷 1275-1290页

作者： Bobo HUA Yong lin School of Mathematical Sciences LMNS Fudan University Shanghai 200433 China Shanghai Center for Mathematical Sciences Fudan University Shanghai 200433 China Department of Mathematics Renmin University of China Beijing 100872 China

We survey some geometric and analytic results under the assumptions of combinatorial curvature bounds for planar/semiplanar graphs and curvature dimension conditions for general graphs.

关键词： Planar graphs combinatorial curvature curvature dimension conditions harmonic functions

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A robust output-feedback adaptive dynamic surface control for linear systems with input disturbance

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控制理论与应用（英文版） 2013年第2期11卷 261-267页

作者： Mingchao SONG Yan lin School of Automation Beihang University

In this paper, a robust output-feedback adaptive control is proposed for linear time-invariant （LTI） single- input single-output （SISO） plants with unmeasurable input disturbance. Using dynamic surface control （DSC） technique, it is shown that the explosion of complexity problem in backstepping control can be eliminated. Furthermore, the proposed adaptive DSC scheme has the following merits： 1） by introducing an initialization technique, the L~ performance of system tracking error can be guaranteed even if the plant high-frequency gain is unknown and the input disturbance exists, and 2） the adaptive law is necessary only at the first design step, which significantly reduces the design procedure. It is proved that with the proposed scheme, all the closed-loop signals are semiglobally uniformly ultimately bounded. Simulation results are presented to demonstrate the effectiveness of the proposed scheme.

关键词： Dynamic surface control Backstepping control Adaptive control Output-feedback Transient perfor-

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Development of Valve Steel for Internal Combustion Engine in China

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Journal of Iron and Steel Research International 1998年第2期5卷 3-8页

作者： Cheng Shichang lin Zhaojie Central Iron and Steel Research Institute MMI

This paper first briefly introduces the history of the development of China valve steel from mainly adopting valve steel from the former Soviet Uinoin in the fifties, manufacturing by herself in the sixties, to introducing advanced valve steel from other countries and instituting Chinese valve steel system since the *** demand of valve steel for China internal combustion engine including material specification and quantity required at present is discussed. The principal difficulties being faced with in the development of China valve steel at the moment are put forward. Finally, a detailed discussion is made on the development of China valve steel with suggstions of developing 5Cr8Si2 and MF811 martensitic steels, 21 2N austenitic steel used for gasoline engine, 23 8N austenitic steel used for diesel engine, 21 4NWNb high strength austenitic steel and LF2 and LF4 for valve alloy.[WT5”BZ〗

关键词： development valve steel internal combustion engine China

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Precipitation and soil particle size co-determine spatial distribution of biological soil crusts in the Gurbantunggut Desert, China

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Journal of Arid Land 2018年第5期10卷 701-711页

作者： WU lin ZHANG Yuanming Hubei University for Nationalities Enshi 445000 China Key Laboratory of Biogeography and Bioresource in Arid Land Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences Urumqi 830011 China

Biological soil crusts （BSCs） are bio-sedimentary associations that play crucial ecological roles in arid and semi-arid regions. In the Gurbantunggut Desert of China, more than 27% of the land surface is characterized by a predominant cover of lichen-dominated BSCs that contribute to the stability of the desert. However, little is known about the major factors that limit the spatial distribution of BSCs at a macro scale. In this study, the cover of BSCs was investigated along a precipitation gradient from the margins to the center of the Gurbantunggut Desert. Environmental variables including precipitation, soil particle size, soil pH, electrical conductivity, soil organic carbon, total salt, total nitrogen, total phosphorus and total potassium were analyzed at a macro scale to determine their association with differing assemblages of BSCs （cyanobacteria crusts, lichen crusts and moss crusts） using constrained linear ordination redundancy analysis （RDA）. A model of BSCs distribution correlated with environmental variables that dominated the first two axes of the RDA was constructed to clearly demonstrate the succession stages of BSCs. The study determined that soil particle size （represented by coarse sand content） and precipitation are the most significant drivers influencing the spatial distribution of BSCs at a macro scale in the Gurbantunggut Desert. The cover of lichen and moss crusts increased with increasing precipitation, while the cover of cyanobacteria crusts decreased with increasing precipitation. The cover of lichen and moss crusts was negatively associated with coarse sand content, whereas the cover of cyanobacteria crusts was positively correlated with coarse sand content. These findings highlight the need for both the availability of soil moisture and a relatively stable of soil matrix, not only for the growth of BSCs but more importantly, for the regeneration and rehabilitation of disturbed BSC communities in arid and semi-arid lands. Thereby, this

关键词： biological soil crust distribution macro scale redundancy analysis (RDA) disturbance temperate desert

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QoS Guaranteed Pre-Pushing Scheme in Peer-Assisted Streaming Network

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China Communications 2014年第A02期11卷 111-117页

作者： lin Fuhong LU Xing School of Computer and Communication Engineering University of Science and Technology Beijing Beijing 100083 P. R. China School of Science Beijing Jiaotong University Beijing 100044 P. R. China

In peer-assisted streaming network, service provider needs to pre-pushing resources to some users for caching. This scheme can increase the resource availability. In traditional strategy, in order to guarantee the user＇s quality of service （QoS）, the pre-pushing action can only start at the time point that the certain user has not used the computer for more than 20 minutes. If the user comes back, the pre-pushing action will be stopped. We claim that this is not an efficient scheme. In this paper, we propose a novel pre-pushing scheme to improve the pre-pushing efficiency, while meeting the user＇s QoS requirements. The basic idea is using the user＇s available bandwidth as much as possible in the condition of meeting the user＇s QoS requirements. Then we design an available bandwidth calculating strategy. The numerical simulation demonstrates that our proposed scheme outperforms the traditional one.

关键词： peer-assisted streaming network downlink bandwidth pre-pushing available bandwidth

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Topology of unitary groups and the prime orders of binomial coefficients

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Science China Mathematics 2017年第9期60卷 1543-1548页

作者： DUAN HaiBao lin XianZu Institute of Mathematics Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing 100190China School of Mathematical Sciences University of Chinese Academy of SciencesBeijing 100049China College of Mathematics and Computer Science Fujian Normal UniversityFuzhou 350108China

Let c : SU(n) → PSU(n) = SU(n)/Zn be the quotient map of the special unitary group SU(n) by its center subgroup Z_n. We determine the induced homomorphism c*: H*(PSU(n)) → H*(SU(n)) on cohomologies by computing with... 详细信息

关键词： Lie groups cohornology prime order of an integer

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