Based on the producing 1, 3-propanediol from microorganism continuous fermentation, we study the algorithm and its convergence for the optimal model in this paper. First, taking the zero of the optimality function as ...
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Based on the producing 1, 3-propanediol from microorganism continuous fermentation, we study the algorithm and its convergence for the optimal model in this paper. First, taking the zero of the optimality function as the terminal criteria, an algorithm for the discrete time system of the optimal model is given with the step-size determined by Armijo line search and the search direction by gradient method. By the result that the discrete time system converges to the continuous time optimal model, the optimality function of the discrete time system is a consistent approximation to the one of the continuous time optimal model and an algorithm for the optimal model is given too. The convergence of the algorithm is proved. At last, it shows that the optimal model describes the experiment correctly and the algorithm is feasible by comparing the computing value with the dates in laboratory.
In the collaborative manufacturing project, task allocation among cooperative enterprises directly impacts the competition ability of enterprises and the overall economic benefits of the project. Aiming at this proble...
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ISBN:
(纸本)9783037852583
In the collaborative manufacturing project, task allocation among cooperative enterprises directly impacts the competition ability of enterprises and the overall economic benefits of the project. Aiming at this problem, a new algorithm is proposed to get the optimal combination of shortest project time, lowest cost and minimum number of selected cooperative enterprises. The algorithm is evaluated with an example and the result shows that the optimization solution can be applied in the actual collaborative projects with good effect.
The intelligent question and answer platform can improve customer satisfaction, strengthen the self-service function of customers, and obtain business information conveniently and quickly. It is an effective means to ...
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ISBN:
(数字)9781665458641
ISBN:
(纸本)9781665458641
The intelligent question and answer platform can improve customer satisfaction, strengthen the self-service function of customers, and obtain business information conveniently and quickly. It is an effective means to reduce the company's overall operating costs and an important measure to promote the capacity building of remote service channels. The purpose of this paper is to study the optimization algorithm of the power marketing AI response system based on the era of intelligent technology. Combined with knowledge graph visualization and other technical means, the basic knowledge graph of the power industry is constructed, and an intelligent dialogue system is designed in combination with the constructed knowledge graph to help the power industry's customer service capabilities to improve, knowledge storage, knowledge management and other work to be carried out well. From the perspective of model evaluation indicators, this paper chooses the accuracy of the model as an important indicator to measure the efficiency of the model. In the relational classification model of information extraction, the comprehensive indicators of precision, recall, and F1 value of the BERT-BiLSTM-CRF knowledge extraction model are better than word embedding + BiLSTM + CRF.
An optimization algorithm based on artificial life algorithm and particle swarm optimization (PSO) is proposed. The optimization includes two stages. In the first stage, artificial life system is created. As artificia...
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ISBN:
(纸本)9780769536347
An optimization algorithm based on artificial life algorithm and particle swarm optimization (PSO) is proposed. The optimization includes two stages. In the first stage, artificial life system is created. As artificial life organisms have a sensing system, they can find the resource they want and metabolize it. The micro-interaction with each other in the artificial life's group results in emergent colonization in the whole system. The emergent colonization of artificial life system is used to provide an excellent initial position for PSO, and PSO is further used to rind the optimal solution in the second stage. Compared with ordinary artificial life based optimization approach and ordinary PSO approach by simulation, in the newly designed method, the performances of searching speed and optimization solution accuracy are improved.
Management of video content distribution through files allocation or caching in content delivery networks with some degree of reliable security measures is representing a big issue in video service delivery and user&#...
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ISBN:
(纸本)9783030011680;9783030011673
Management of video content distribution through files allocation or caching in content delivery networks with some degree of reliable security measures is representing a big issue in video service delivery and user's requirements for quality of experience provision are constantly tightened. Operators are looking for new ways to efficiently deliver video content to specific customers or classes of customers, which allow the transfer of large amounts of traffic with the appropriate quality of experience. Mobile Edge Computing (MEC), initiated as an Industry Specification Group (ISG) within ETSI, is quickly gaining traction as a disruptive technology that promises to bring applications and content closer to the network edge, a move that will reduce latency and make new services optimization possible. The aim of this thesis is to provide optimization algorithms for accessing IPTV video services in managed way over Software-defined Networking (SDN) to meet the high Quality of service (QoS) reducing network latency and, ultimately, improving the end consumer's quality of experience (QoE). We also show the positive impact of SDN network using our algorithm noticeably reducing video delay.
In this paper an optimization algorithm for time synchronization in telecommunication network is proposed based on VAE(Variational Auto Encoder)framework. Firstly features are represented in latent space under propose...
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ISBN:
(纸本)9781728160429
In this paper an optimization algorithm for time synchronization in telecommunication network is proposed based on VAE(Variational Auto Encoder)framework. Firstly features are represented in latent space under proposed framework while performance of synchronization network is measured and evaluated. Secondly optimization algorithm is further designed with which feature of abnormal samples and benchmark are adaptively merged for smooth adjustment with low risk in practical network operation. Meanwhile considering the characteristics as domain knowledge of synchronization network, a novel metric is adopted to reduce the fluctuation of adjustment. The simulation results verified that performance of synchronization network is significantly improved by optimization templates reconstructed through decoding part of VAE model. It is implied that prior knowledge of synchronization in latent space is introduced with certain interpret-ability for assessment of monitoring performance while optimization adjustment can be properly operated through novel metric proposed in this algorithm.
The extended finite element method (XFEM) allows the entire crack to be represented independently from the mesh, which means re-mesh is unnecessary in model crack growth, reduces the computational time drastically. Ho...
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ISBN:
(纸本)9783037859063
The extended finite element method (XFEM) allows the entire crack to be represented independently from the mesh, which means re-mesh is unnecessary in model crack growth, reduces the computational time drastically. However, fatigue crack growth simulation has been computationally challenged by lots of analog computations in crack growth. Therefore, a new reanalysis algorithm based on incremental Cholesky factorization is derived. In this paper, we consider a variant of XFEM in which an exponent discontinuous function is used to simulate the crack through unit. Then the corresponding formula of XFEM with inclusion and crack problem with a new reanalysis algorithm is derived. In the end, we use the new reanalysis algorithm and an optimization algorithm to predict the angle of crack initiation from a hole in a plate with inclusion. It shows that the algorithm is effective.
Many optimization algorithms proposed for PCB assembly problem had a common problem that they introduced strong constraints, which made optimization performance deteriorate in practice. Focusing on component pick and ...
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ISBN:
(纸本)9789881563910
Many optimization algorithms proposed for PCB assembly problem had a common problem that they introduced strong constraints, which made optimization performance deteriorate in practice. Focusing on component pick and placement sequencing problem for multi-head placement machine in PCB assembly, this paper discuss some strong constraints involved in related optimization problem and propose an algorithm under relaxed constraints for problem solving. Certain strong constraints were relaxed for the algorithm to expand solution space, making it possible to find better solutions. Under such relaxation, an optimization algorithm based on scatter search (SS) method was constructed to solve the component sequencing problem, and steps of algorithm are detailed in the paper. Numerical experiments were made to conduct an evaluation for the proposed algorithm, along with a comparison with two heuristic algorithms proposed in other literatures. The results show that the proposed algorithm has better performance in optimization results and can shorten PCB assembly time of the placement machine effectively.
Design for assembly (DFA) has proved its success in manufacturing to face the market challenge. But the assembly process parameters were rarely concerned in the design for assembly. Aimed at this problem, an algorithm...
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ISBN:
(纸本)9780878494705
Design for assembly (DFA) has proved its success in manufacturing to face the market challenge. But the assembly process parameters were rarely concerned in the design for assembly. Aimed at this problem, an algorithm for design for automated assembly of circular parts was proposed. This algorithm can help designer to select the optimal process parameters, such as dimension tolerance of mating parts, location precision of assembly device and so on, subject to budgetary constraints. Finally a case is employed to explain the optimal course.
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