This paper delves into the baseline design under the baseline parameterization model in experimental design, focusing on the relationship between the K-aberration criterion and the word length pattern (WLP) of regular...This paper delves into the baseline design under the baseline parameterization model in experimental design, focusing on the relationship between the K-aberration criterion and the word length pattern (WLP) of regular two-level designs. The paper provides a detailed analysis of the relationship between K5and the WLP for regular two-level designs with resolution t=3, and proposes corresponding theoretical results. These results not only theoretically reveal the connection between the orthogonal parameterization model and the baseline parameterization model but also provide theoretical support for finding the K-aberration optimal regular two-level baseline designs. It demonstrates how to apply these theories to evaluate and select the optimal experimental designs. In practical applications, experimental designers can utilize the theoretical results of this paper to quickly assess and select regular two-level baseline designs with minimal K-aberration by analyzing the WLP of the experimental design. This allows for the identification of key factors that significantly affect the experimental outcomes without frequently changing the factor levels, thereby maximizing the benefits of the experiment.展开更多
The study on designs for the baseline parameterization has aroused attention in recent years. This paper focuses on two-level regular designs for the baseline parameterization. A general result on the relationship bet...The study on designs for the baseline parameterization has aroused attention in recent years. This paper focuses on two-level regular designs for the baseline parameterization. A general result on the relationship between K-aberration and word length pattern is developed.展开更多
The inverse heat conduction method is one of methods to identify the casting simulation parameters. A new inverse method was presented according to the Tikhonov regularization theory. One appropriate regularized funct...The inverse heat conduction method is one of methods to identify the casting simulation parameters. A new inverse method was presented according to the Tikhonov regularization theory. One appropriate regularized functional was established, and the functional was solved by the sensitivity coefficient and Newtonaphson iteration method. Moreover, the orthogonal experimental design was used to estimate the appropriate initial value and variation domain of each variable to decrease the number of iteration and improve the identification accuracy and efficiency. It illustrated a detailed case of AlSiTMg sand mold casting and the temperature measurement experiment was done. The physical properties of sand mold and the interracial heat transfer coefficient were identified at the meantime. The results indicated that the new regularization method was efficient in overcoming the ill-posedness of the inverse heat conduction problem and improving the stability and accuracy of the solutions.展开更多
In the study of radius of curvature differential equations,a generalized closedform analytical solution to the curve function y(x)in a rectangular 2D Cartesian plane is determined under the assumption that the radius ...In the study of radius of curvature differential equations,a generalized closedform analytical solution to the curve function y(x)in a rectangular 2D Cartesian plane is determined under the assumption that the radius of curvature function and initial conditions are known,specified quantities.Various mathematical examples are provided to demonstrate the validity of the differential equation solution.A more comprehensive application is then shown regarding a regular wedge cam mechanism design associated with three-point selfcentering motion for its potential use when optimizing cam characteristics and associated machinery design related to curvature.展开更多
AGED,全称为ArGument Extractor with Definitions in FrameNet,是最近提出的一种框架语义角色标注(FSRL)模型。该模型以框架和框架元素的定义为模板,在整个训练语料上使用预训练语言模型进行编码,是一种基于论元查询的FSRL模型。然而,...AGED,全称为ArGument Extractor with Definitions in FrameNet,是最近提出的一种框架语义角色标注(FSRL)模型。该模型以框架和框架元素的定义为模板,在整个训练语料上使用预训练语言模型进行编码,是一种基于论元查询的FSRL模型。然而,随着语料规模和模型参数的日益增加,AGED模型的训练和超参数调优变得相当耗时,进而影响了AGED模型的训练和调优效率。为此,该文在训练阶段引入集成学习方法,在调优阶段引入正交设计方法,提出了基于正则化m×2交叉验证(m×2 BCV)的AGED集成模型。具体地,在训练阶段,该文引入m×2 BCV和众数投票结合的集成学习方法,在整个训练语料上使用m×2 BCV构造多组训练子集和验证子集;然后利用并行训练技术和AGED模型生成多个AGED子模型;最后利用众数投票方法集成这些子模型,构造性能更优的AGED集成模型。在调优阶段,使用正交设计方法,以最大化验证集上F_(1)值为优化目标,从AGED集成模型的大量超参数组合中选出一部分具有代表性的超参数组合进行调优。实验结果表明,与AGED模型相比,提出的AGED集成模型在测试集上的F_(1)值可以提高1.34百分点,且训练时间仅占AGED模型的0.79倍,这充分验证了AGED集成模型的有效性。此外,该文也开展了消融实验,验证了AGED集成模型中引入的集成学习方法和正交设计方法的有效性。展开更多
Dear Editor,Compared with traditional technologies affecting gene expression,changing DNA sequences of target genes is one of the most outstanding characters of CRISPR(Clustered Regularly Interspaced Short Palindromic...Dear Editor,Compared with traditional technologies affecting gene expression,changing DNA sequences of target genes is one of the most outstanding characters of CRISPR(Clustered Regularly Interspaced Short Palindromic Repeats).Single-guide RNAs(sgRNAs)guiding endonuclease Cas to target sites is a crucial step of CRISPR-Cas system for changing DNA sequences.An ideal sgRNA should only bind to the target gene.However,similar sequences of non-target sites can also be recognized leading to off-target effects[1].展开更多
Mukerjee and Wu（2001） employed projective geometry theory to find the wordlength pattern of a regular mixed factorial design in terms of its complementary set, but only for the numbers of words of length 3 or 4. In ...Mukerjee and Wu（2001） employed projective geometry theory to find the wordlength pattern of a regular mixed factorial design in terms of its complementary set, but only for the numbers of words of length 3 or 4. In this paper, by introducing a concept of consulting design and based on the connection between factorial design theory and coding theory, we obtain some combinatorial identities that relate the wordlength pattern of a regular mixed-level （2^r）2^n factorial design to that of its consulting design. Consequently, a general rule for identifying minimum aberration （2^r）2^n factorial designs through their consulting designs is established. It is an improvement and generalization of the related result in Mukerjee and Wu（2001）.展开更多
针对当前雷达电子战中装备的小型化和智能化需求,考虑将探测波形隐藏在干扰波形中,提出了基于深度强化学习的干扰探测一体化波形设计。首先,通过伪随机码噪声调频信号和线性调频信号复合调制完成一体化波形建模;其次,构造速度模糊函数...针对当前雷达电子战中装备的小型化和智能化需求,考虑将探测波形隐藏在干扰波形中,提出了基于深度强化学习的干扰探测一体化波形设计。首先,通过伪随机码噪声调频信号和线性调频信号复合调制完成一体化波形建模;其次,构造速度模糊函数、多普勒模糊函数和脉压后的均值标准差之比等目标函数,引入深度Q网络(deep Q learning network,DQN)算法对目标函数求解;最后,针对DQN类算法中存在的过估计问题,提出了双重竞争深度正则化Q学习(double dueling deep Q-learning network based on regularization,D3QN-Reg)算法对一体化波形进行优化,优化后的脉压幅度最高提升13.6%,速度域的第一旁瓣幅度降低19.1%。展开更多
In order to meet the rapid needs of processing square hole in mechanical equipment, the paper expounds the square hole processing method： planetary wheel method, and analyze the principle of tooling structure and pro...In order to meet the rapid needs of processing square hole in mechanical equipment, the paper expounds the square hole processing method： planetary wheel method, and analyze the principle of tooling structure and process with computer graphics parameters design. The results that, as long as the appropriate parameters, using the above method not only can punch the square hole, can also be processed triangle, the five angle and hexagonal regular polygon holes. The square hole processing method can provide theoretical basis and engineering reliable reference for related engineering and technical personnel.展开更多
文摘This paper delves into the baseline design under the baseline parameterization model in experimental design, focusing on the relationship between the K-aberration criterion and the word length pattern (WLP) of regular two-level designs. The paper provides a detailed analysis of the relationship between K5and the WLP for regular two-level designs with resolution t=3, and proposes corresponding theoretical results. These results not only theoretically reveal the connection between the orthogonal parameterization model and the baseline parameterization model but also provide theoretical support for finding the K-aberration optimal regular two-level baseline designs. It demonstrates how to apply these theories to evaluate and select the optimal experimental designs. In practical applications, experimental designers can utilize the theoretical results of this paper to quickly assess and select regular two-level baseline designs with minimal K-aberration by analyzing the WLP of the experimental design. This allows for the identification of key factors that significantly affect the experimental outcomes without frequently changing the factor levels, thereby maximizing the benefits of the experiment.
文摘The study on designs for the baseline parameterization has aroused attention in recent years. This paper focuses on two-level regular designs for the baseline parameterization. A general result on the relationship between K-aberration and word length pattern is developed.
文摘The inverse heat conduction method is one of methods to identify the casting simulation parameters. A new inverse method was presented according to the Tikhonov regularization theory. One appropriate regularized functional was established, and the functional was solved by the sensitivity coefficient and Newtonaphson iteration method. Moreover, the orthogonal experimental design was used to estimate the appropriate initial value and variation domain of each variable to decrease the number of iteration and improve the identification accuracy and efficiency. It illustrated a detailed case of AlSiTMg sand mold casting and the temperature measurement experiment was done. The physical properties of sand mold and the interracial heat transfer coefficient were identified at the meantime. The results indicated that the new regularization method was efficient in overcoming the ill-posedness of the inverse heat conduction problem and improving the stability and accuracy of the solutions.
文摘In the study of radius of curvature differential equations,a generalized closedform analytical solution to the curve function y(x)in a rectangular 2D Cartesian plane is determined under the assumption that the radius of curvature function and initial conditions are known,specified quantities.Various mathematical examples are provided to demonstrate the validity of the differential equation solution.A more comprehensive application is then shown regarding a regular wedge cam mechanism design associated with three-point selfcentering motion for its potential use when optimizing cam characteristics and associated machinery design related to curvature.
文摘AGED,全称为ArGument Extractor with Definitions in FrameNet,是最近提出的一种框架语义角色标注(FSRL)模型。该模型以框架和框架元素的定义为模板,在整个训练语料上使用预训练语言模型进行编码,是一种基于论元查询的FSRL模型。然而,随着语料规模和模型参数的日益增加,AGED模型的训练和超参数调优变得相当耗时,进而影响了AGED模型的训练和调优效率。为此,该文在训练阶段引入集成学习方法,在调优阶段引入正交设计方法,提出了基于正则化m×2交叉验证(m×2 BCV)的AGED集成模型。具体地,在训练阶段,该文引入m×2 BCV和众数投票结合的集成学习方法,在整个训练语料上使用m×2 BCV构造多组训练子集和验证子集;然后利用并行训练技术和AGED模型生成多个AGED子模型;最后利用众数投票方法集成这些子模型,构造性能更优的AGED集成模型。在调优阶段,使用正交设计方法,以最大化验证集上F_(1)值为优化目标,从AGED集成模型的大量超参数组合中选出一部分具有代表性的超参数组合进行调优。实验结果表明,与AGED模型相比,提出的AGED集成模型在测试集上的F_(1)值可以提高1.34百分点,且训练时间仅占AGED模型的0.79倍,这充分验证了AGED集成模型的有效性。此外,该文也开展了消融实验,验证了AGED集成模型中引入的集成学习方法和正交设计方法的有效性。
基金This work was supported by National Natural Science Foundation of China(Grant No.32100501)Shenzhen Science and Technology Program(Grant No.RCBS20210609103819020)J.Z.was funded by the Zhejiang Science and Technology Major Program on Agricultural New Variety Breeding(2021C02070-1).
文摘Dear Editor,Compared with traditional technologies affecting gene expression,changing DNA sequences of target genes is one of the most outstanding characters of CRISPR(Clustered Regularly Interspaced Short Palindromic Repeats).Single-guide RNAs(sgRNAs)guiding endonuclease Cas to target sites is a crucial step of CRISPR-Cas system for changing DNA sequences.An ideal sgRNA should only bind to the target gene.However,similar sequences of non-target sites can also be recognized leading to off-target effects[1].
文摘Mukerjee and Wu（2001） employed projective geometry theory to find the wordlength pattern of a regular mixed factorial design in terms of its complementary set, but only for the numbers of words of length 3 or 4. In this paper, by introducing a concept of consulting design and based on the connection between factorial design theory and coding theory, we obtain some combinatorial identities that relate the wordlength pattern of a regular mixed-level （2^r）2^n factorial design to that of its consulting design. Consequently, a general rule for identifying minimum aberration （2^r）2^n factorial designs through their consulting designs is established. It is an improvement and generalization of the related result in Mukerjee and Wu（2001）.
文摘针对当前雷达电子战中装备的小型化和智能化需求,考虑将探测波形隐藏在干扰波形中,提出了基于深度强化学习的干扰探测一体化波形设计。首先,通过伪随机码噪声调频信号和线性调频信号复合调制完成一体化波形建模;其次,构造速度模糊函数、多普勒模糊函数和脉压后的均值标准差之比等目标函数,引入深度Q网络(deep Q learning network,DQN)算法对目标函数求解;最后,针对DQN类算法中存在的过估计问题,提出了双重竞争深度正则化Q学习(double dueling deep Q-learning network based on regularization,D3QN-Reg)算法对一体化波形进行优化,优化后的脉压幅度最高提升13.6%,速度域的第一旁瓣幅度降低19.1%。
文摘In order to meet the rapid needs of processing square hole in mechanical equipment, the paper expounds the square hole processing method： planetary wheel method, and analyze the principle of tooling structure and process with computer graphics parameters design. The results that, as long as the appropriate parameters, using the above method not only can punch the square hole, can also be processed triangle, the five angle and hexagonal regular polygon holes. The square hole processing method can provide theoretical basis and engineering reliable reference for related engineering and technical personnel.
