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47 results about "Iterative strategy" patented technology

The iterative strategy is the cornerstone of Agile practices, most prominent of which are SCRUM, DSDM, and FDD. The general idea is to split the development of the software into sequences of repeated cycles (iterations). Each iteration is issued a fixed-length of time known as a timebox. A single timebox typically lasts 2-4 weeks.

Financial knowledge graph construction method and system based on artificial intelligence

The invention discloses a financial knowledge graph construction method and system based on artificial intelligence, and relates to the field of artificial intelligence data processing. The method comprises the following steps: performing multi-dimensional semantic analysis on a heterogeneous financial data source, and extracting a structured semantic fragment; constructing a financial entity perception unit, identifying a multi-granularity entity and generating a unique code; generating a preliminary relation graph based on the event cascade relation and the attachment structure, and injecting a semantic translation label; normalizing the atlas relationship through semantic separation and a label reconstruction mechanism to form a financial relationship network with consistent semantics; executing evolution increment iteration in combination with the newly added corpus, and dynamically updating nodes and edge sets; and performing semantic consistency and structural integrity evaluation on an iteration result, and outputting a stable financial knowledge graph structural body. By introducing a multi-factor semantic analysis model, a causal relationship modeling mechanism and a graph evolution iteration strategy, systematic improvement of the financial knowledge graph in the aspects of structural expression precision, semantic reasoning ability and dynamic adaptability is achieved.
Owner:SHENZHEN QIANHAIZEJIN IND & FINANCE TECH CO LTD

Function gradient piezoelectric material optimization method based on physical information network and deep regression

The invention discloses a functional gradient piezoelectric material optimization method based on a physical information network and deep regression. The method comprises the following steps of: 1, constructing a physical information neural network embedded with a piezoelectric constitutive relation; 2, developing a deep regression network based on symbolic regression, wherein the deep regression network is used for converting the piezoelectric phase volume fraction distribution predicted by the neural network into an analyzable mathematical expression; step 3, carrying out joint optimization on the two networks by adopting an alternate iteration strategy; under the condition that parameters of the deep regression network are kept unchanged, a physical information neural network is trained preferentially to meet the precision requirements of a displacement field, a stress field, potential distribution and a piezoelectric phase volume fraction; and then fixing the physical information network, optimizing the expression generation capability of the deep regression network, and finally analyzing the piezoelectric phase volume fraction expression. According to the method, the physical information neural network and the depth symbol regression technology are fused, so that multi-physical field collaborative optimization of component distribution of the functionally graded piezoelectric material is realized.
Owner:HOHAI UNIV +1

Synthetic broadband waveform optimization method based on reinforcement learning

The invention relates to the technical field of radar waveform optimization, in particular to a synthetic broadband waveform optimization method based on reinforcement learning. According to the method, a deep reinforcement learning framework is adopted, and end-to-end optimization is carried out on the center frequency and amplitude parameters of multiple sub-pulses. The method comprises the following steps: constructing a synthetic broadband waveform signal model, and parameterizing sub-waveforms to determine a search space of an optimization problem; converting a waveform optimization problem into a reinforcement learning form, and defining a state space, an action space, a reward function and a state transition mechanism; based on a deterministic soft action value iteration strategy algorithm, point spread function features are extracted in combination with a Transform encoder, and sub-pulse parameters are dynamically adjusted. Through the method, the main lobe resolution can be effectively suppressed and improved, the target detection performance of a radar system is improved, and the method has good global optimization capability and environmental adaptability and is suitable for cognitive radar and adaptive waveform design scenes.
Owner:WUHAN BINHU ELECTRONICS

Electric vehicle wireless charging system LPV-Hammerstein model identification method based on alternating least square iteration strategy

The invention relates to an electric vehicle wireless charging system LPV-Hammerstein model identification method based on an alternating least square iteration strategy, and belongs to the technical field of power electronic system modeling and parameter identification. The method comprises the following steps: firstly, constructing an LPV-Hammerstein model structure based on a WPT system circuit topology and a working mechanism, and then collecting discrete data of a system input control signal U, an output DC voltage Vo and a scheduling variable Req; then, alternately fixing other parameters by adopting an alternate least square iterative algorithm, and converting a to-be-estimated parameter problem into a linear least square sub-problem to be solved; and when a convergence condition is satisfied, a final LPV-Hammerstein model parameter estimation result is obtained. According to the method, the common nonlinear and parameter change coupling characteristics in the wireless charging system of the electric vehicle can be effectively processed, a systematized and efficient way is provided for obtaining a high-precision system dynamic model, and the limitation that the system cannot be accurately described by a traditional linear model or a simple nonlinear model is overcome.
Owner:CHONGQING UNIV OF POSTS & TELECOMM

Asymmetric cross-modal hash learning method for potential structure information

The invention discloses an asymmetric cross-modal hash learning method for potential structure information, and relates to the technical field of cross-modal retrieval. Analyzing a sample clustering structure, sample similarity information and semantic similarity information among the multi-modal samples to obtain a projection matrix of different modals, a clustering center of a projection space, a clustering indication matrix, a mapping matrix, a discrete hash code and a calculation formula of an auxiliary variable; updating the projection matrix of each modal, the clustering center of the projection space, the clustering indication matrix, the mapping matrix, the discrete hash code and the auxiliary variable by using an iteration strategy; determining a hash function of each modal according to the discrete hash code obtained by the last iteration and the multi-modal training sample; the hash function is used for performing similarity retrieval on the query sample in the multi-modal data. According to the method, the Hash code with higher discrimination can be obtained, so that the retrieval performance of cross-modal retrieval is improved.
Owner:XIAN TECH UNIV

Short-wave time difference positioning method and system based on particle swarm optimization

The invention discloses a short-wave time difference positioning method based on particle swarm optimization, which is realized by aiming at a short-wave signal source positioning problem under the condition that ionized layer information is unknown through the following steps of: dynamically screening a receiving station combination with optimal geometric distribution by adopting a particle swarm optimization algorithm based on longitude and latitude and time difference observation data of a receiving station group; taking the main receiving station as a coordinate origin, and converting the geographic coordinates of the selected station into rectangular plane coordinates; constructing a time difference positioning equation set by using a Chan algorithm, and calculating a target position through pseudo-inverse solution and an iteration strategy; and filtering the ill-conditioned solution based on a geometric accuracy factor threshold, analyzing a positioning point cluster through sliding window density, and outputting median coordinates as a final positioning result. According to the method, the receiving station is innovatively selected and modeled as a combinatorial optimization problem, the positioning precision in a complex electromagnetic environment is remarkably improved through a collaborative architecture of particle swarm optimization and a Chan algorithm, and the problem of positioning drift caused by poor geometric distribution of stations in a traditional method is effectively solved.
Owner:WUHAN UNIV

Method and device for predicting settlement trend value of building

The invention relates to the technical field of settlement monitoring, in particular to a method for predicting a building settlement trend value, which comprises the following steps of: testing the settlement amount of a building in each period through settlement observation points so as to obtain a period test value in-time ordinal sequence of each settlement observation point; establishing a traditional GM (1, 1) model for the time sequence sequence to predict so as to obtain a time response function; constructing an equal-dimensional metabolism GM (1, 1) model through an iteration strategy; obtaining an optimal dimension according to the development coefficient of the time response function; and according to the isometric metabolism GM (1, 1) model under the optimal dimension, obtaining the ash action amount and the development coefficient, and obtaining the settlement trend value of the building. According to the method, the settlement trend value of the building can be effectively predicted, the defects of subjectivity and randomness of parameter selection in a traditional method are overcome, and reliable technical support is provided for engineering practice. The invention further provides a device for predicting the settlement trend value of the building.
Owner:GUANGXI TRANSPORTATION VOCATIONAL & TECH COLLEGE

Robust robust sequence extraterrestrial celestial body terrain reference plane fitting method and system

The invention discloses a robust robust sequence extraterrestrial celestial body terrain reference surface fitting method and system, and relates to the technical field of terrain reference surface fitting, and the method comprises the steps: collecting three-dimensional laser point cloud data to construct a reference plane geometric model, and building a joint error model of an observation value error and a design matrix error; adopting a sequence PEIV total least square framework to carry out grouping iteration adjustment on the point cloud data, and recursively updating parameter estimation by utilizing an error propagation matrix and a matrix inversion formula; introducing a two-factor robust mechanism, dynamically calculating a weight according to a residual error and estimating a robust scale; and circularly optimizing the parameters through an iterative strategy until a convergence condition is met, and outputting reference plane parameters. According to the method, different terrain complexity, data scales and error distribution scenes can be covered, the adaptability and engineering practicability of terrain datum plane fitting are remarkably improved, and reliable geometric reference is provided for subsequent obstacle detection and safe area decision making.
Owner:TONGJI UNIV

Self-adaptive vacuum defoaming process optimization method based on intelligent control system

The invention provides a self-adaptive vacuum defoaming process optimization method based on an intelligent control system, and aims to solve the problems of micro-bubble residue, too high energy consumption and the like caused by the fact that a traditional defoaming technology cannot adapt to liquids with different viscosities, and accurate defoaming is realized through a multi-dimensional sensing technology and strategy generation and regulation. Presetting a high-precision vacuum parameter and a viscosity grading strategy; establishing a liquid characteristic vector model by adopting a YOLOv7 and Hough transformation algorithm, and matching a historical optimal strategy in combination with weighted cosine similarity; generating a defoaming strategy based on the pre-training network and a multi-objective optimization algorithm, and verifying the defoaming strategy in the virtual environment; defoaming is carried out in four stages, and efficient foam breaking is achieved through sectional PID control, resonance vibration and cooperation of a two-stage pump; a Kalman filtering algorithm is integrated, pressure, temperature and vibration data are fused, and vacuum pump power and a heating strategy are adjusted; and constructing a multi-index evaluation system, and driving strategy iterative optimization through a reward signal.
Owner:HUBEI LIANXIN DISPLAY TECH CO LTD

Multi-scale coupling calculation method for flow-induced vibration of pump turbine

The invention discloses a pump turbine flow-induced vibration multi-scale coupling calculation method, and belongs to the technical field of pump turbine fluid-solid coupling dynamics. According to the method, the gap flow effect is included in a multi-scale unsteady fluid-solid coupling analysis framework of the pump turbine, the gap drainage basin is included in three-dimensional modeling of the pump turbine, the three-dimensional model is subjected to grid division by adopting a multi-scale grid technology, and a small transition region is arranged between a movable guide vane and a rotating wheel, so that the gap flow effect is obtained. The transverse direction is consistent with a main runner grid, and the longitudinal direction corresponds to a gap grid, so that data coordination of large-scale and small-scale regions is realized. A fluid-solid coupling solving method of a bidirectional iteration strategy is adopted, a flow field and a structure field are solved respectively, a system coupling module carries out load transmission and coordinated updating in a residual weighting and node mapping mode, the physical consistency and numerical stability of coupling simulation are effectively improved, and the system performance is improved. The method has remarkable advantages in the aspects of improving simulation precision, enhancing calculation stability, improving design efficiency and the like.
Owner:ZHEJIANG UNIV

Intelligent peripheral control method based on Android box and phase-locked loop synchronization circuit

The invention belongs to the technical field of intelligent control and electronic circuits, and particularly relates to an intelligent peripheral control method based on an Android box, which comprises the following steps: acquiring sensor data and peripheral operation data of the Android box; performing feature data extraction through a time-frequency joint feature algorithm; a fault precursor prediction model is utilized to identify potential risks, a synchronous state is fed back to a user through voice, an equipment abnormal trend and a current operation condition are grasped, a federal learning cooperative training model is utilized to perform dynamic monitoring based on the potential risks, and a predictive pre-control instruction and an emergency instruction are generated; the method is executed after verification of the block chain, a standby power supply is started in an extreme scene, a user is informed of a real-time state through LED light flickering, a reinforcement learning iteration strategy is utilized, a maintenance scoring system is constructed, and point details are displayed to the user through an APP according to maintenance point redeemable services. Therefore, the problems of insufficient data processing and risk prediction capabilities, lack of user maintenance incentive mechanisms and the like in the prior art are solved.
Owner:SHENZHEN HENGCHANGTONG ELECTRONICS CO LTD

Multi-agent cooperative grouping and income distribution method

The invention discloses a multi-agent cooperative grouping and income distribution method, which comprises the following steps of: introducing an improved HCS algorithm to reasonably initialize tasks and each agent, calculating sub-task priorities according to skill requirements and prediction workload distribution, optimizing cross-task resource distribution by combining income prediction and cost constraint in an inter-task competition stage, and optimizing the task resource distribution. And calculating the marginal contribution of the intelligent agent based on a Shapley value, carrying out income distribution in combination with a dynamic excitation coefficient, adjusting an income distribution proportion according to parameters, and carrying out iterative strategy updating on a formed initial grouping result until the initial grouping result is converged to Nash equilibrium after the individual rational constraint and the overall income maximization are met. According to the method, initial allocation is intelligentized, the resource utilization rate and the total task income are remarkably improved based on skill demand prediction and the workload priority, fair and efficient income allocation is ensured, and the method is suitable for industrial automation, smart cities and other scenes.
Owner:CHONGQING TECH & BUSINESS UNIV

Multi-interpolation method and system for medical multi-view incomplete data

The invention discloses a multi-interpolation method and system for medical multi-view incomplete data, and relates to the technical field of machine learning, and the method comprises the steps: constructing a unified matrix and a binary observation indication matrix through feature level splicing, and achieving single interpolation in combination with deficiency perception standardization, adaptive neighbor selection and Lregularization condition regression; an iteration strategy of missing proportion sorting is adopted to improve convergence, random permutation and regression coefficient disturbance are introduced to generate m groups of candidate interpolation results, and uncertainty is described; and finally, outputting complete multi-view data based on missing rate adaptive weighted fusion, destandardization and view segmentation. According to the method, through multi-view feature splicing modeling, Pearson's adaptive neighbor regression and missing proportion driven iterative interpolation, accurate multiple interpolation of high robustness, quantifiable uncertainty and reducible view structure for medical multi-view incomplete data is realized.
Owner:HUAQIAO UNIVERSITY

A Sensor-Integrated Multi-UAV Beam Trajectory Design Method for Counter-UAV Operations

PendingCN122092921ALocation uncertainty resolutionCollaborative sensing accuracy improvementsSpatial transmit diversityParticular environment based servicesBeam trajectoryMathematical model
This invention discloses a sensor-integrated multi-UAV beam trajectory design method for anti-UAV operations. First, a system model is constructed, defining the channel model, signal model, and power consumption model. Then, a mathematical model of the long-term Cramer-Rao bound (CRB) minimization problem is established, and the optimization problem is reconstructed, addressing uncertainties in the optimization objective. Next, the problem is broken down into three sub-problems: joint optimization of transmit and receive beams, joint optimization of user association and UAV scheduling, and UAV trajectory optimization. These sub-problems are solved using Lagrange relaxation, semi-definite relaxation, and penalized successive convex approximation methods, respectively. Finally, an alternating iterative strategy is used to coordinate the solutions to these sub-problems. This invention solves problems in existing technologies such as incomplete coverage, poor sensing performance, signal interference, and positional uncertainty caused by UAV maneuvers, improving cooperative sensing performance and meeting the dual requirements of flexible sensing and reliable positioning.
Owner:CHONGQING UNIV OF POSTS & TELECOMM

A message pushing strategy optimization method and system based on deep reinforcement learning

This invention relates to the field of data reasoning technology, and discloses a message push strategy optimization method and system based on deep reinforcement learning. The method includes: jointly encoding the static attributes, observation sequence, and selection identifier of the agent to generate a decision state vector and an action feature set; obtaining a preliminary value scalar by performing a dot product operation on the decision state vector and the action embedding vector; normalizing the scalar to obtain a policy probability distribution, and determining the action identifier to be executed accordingly; retrieving environmental interaction data based on the identifier to obtain a multi-dimensional feedback vector; updating the state representation weights based on the feedback, and constructing a prediction vector by combining the action features; finally, iterating the policy parameters based on the prediction vector to obtain an optimization index. This invention can improve the efficiency of message push strategy optimization based on deep reinforcement learning.
Owner:SANMING UNIV

Navigation method, device and equipment based on GRPO algorithm and medium

The invention discloses a navigation method, device and equipment based on a GRPO algorithm and a medium, and relates to the technical field of reinforcement learning, and the method comprises the steps: calculating the average similarity between a current strategy and a plurality of previous iteration strategies based on KL divergence; updating a step length factor through an average reward change rate and an average similarity determined based on a plurality of iterated rewards; determining a gradient estimation correction item based on the gradient estimation of the sampling trajectory, determining target gradient estimation according to the gradient estimation correction item and the original gradient estimation, and updating the current strategy through the target gradient estimation and the updated step length factor; when the current strategy is updated, the importance weight is cut, the target function of the GRPO algorithm is corrected according to the cut weight, the GRPO algorithm is trained based on the corrected function and the updated strategy, so that the intelligent agent learns the optimal strategy based on the trained GRPO algorithm, and the outlet of the labyrinth is determined according to the optimal strategy. Therefore, the stability of the algorithm is improved.
Owner:SHANDONG INSPUR SCI RES INST CO LTD

Low-complexity signal detection method of MIMO-OTFS system

The invention relates to the technical field of wireless communication, in particular to a low-complexity signal detection method of an MIMO-OTFS system, which comprises the following steps: setting a grouping symbol number according to a channel condition, and calculating a maximum iteration number; in each iteration: calculating a filtered received signal through the channel matrix and the received signal; constructing a matrix psi, processing a structure matrix psi S of the matrix psi by adopting an RCM algorithm to obtain a permutation matrix, and calculating a reordering matrix according to the permutation matrix; performing Cholesky decomposition on the reordering matrix to obtain a banded matrix; calculating the SINR of each symbol which is not detected at present; all symbols which are not detected at present are arranged in a descending order according to the SINR size, the first S symbols in the sorting result are taken to be detected one by one and output, and the channel matrix and the received signal are updated; judging whether the maximum iteration number is reached or not, and if not, continuing the next iteration; according to the method, the time complexity is reduced while the bit error rate performance is ensured through an iterative strategy of reliability symbol detection and interference elimination.
Owner:CHONGQING UNIV OF POSTS & TELECOMM

Time-of-flight mass spectrometer resolution optimization method and device, medium and computer equipment

The invention provides a time-of-flight mass spectrometer resolution optimization method and device, a medium and computer equipment. The method comprises the following steps: S1, obtaining a target function and a PSO particle swarm; s2, based on the objective function, performing PSO iteration on the PSO particle swarm; judging whether a termination condition is met or not, and if yes, terminating iteration and generating a final result; if not, executing the step S3; s3, judging whether an NM iteration condition is met or not, if yes, executing NM iteration on the PSO particle swarm after PSO iteration, correcting the PSO particles based on an NM iteration result, and executing the step S2 on the corrected PSO particle swarm; if not, executing the step S2; and S4, outputting a final result. By the adoption of the method, the optimization model with the mass resolution as the objective function is constructed, and the iterative strategy of mutual fusion of the particle swarm optimization (PSO) and the Nelder-Mead simplex (NM) algorithm is adopted, so that organic combination of global search and local fine optimization is achieved.
Owner:JINAN UNIVERSITY

A method and apparatus for automatic inference of variable types in a low-code platform

The application discloses a low-code platform variable type automatic inference method and device. The method comprises the following steps: screening a variable with an automatic type identifier in a low-code platform to obtain a target variable; obtaining a default value inference result based on a type inference rule; traversing a structured model corresponding to a business logic and declaration information to obtain a node assignment inference result; obtaining a dependency relationship inference result through a multi-round iteration strategy recursive derivation; integrating the default value inference result, the node assignment inference result and the dependency relationship inference result to determine an initial type of the target variable; storing the initial type based on inference trace information and realizing change notification to finally obtain a target type. Through multi-stage inference, expression type calculation, chain dependency processing and other designs, the application does not need to manually specify the type, supports complex scene inference, maintains type safety, reduces use and maintenance costs, and improves the development efficiency and ease of use of the low-code platform.
Owner:XIAN GRAPE CITY SOFTWARE CO LTD

Information active group sending method

The invention discloses an information active group sending method, which belongs to the technical field of information distribution, and comprises the following steps: triggering a task and analyzing to generate task metadata; capturing real-time features of users, generating dynamic tags, and screening effective users; generating compliant personalized single instance content in combination with the dynamic tag matching material; an optimal channel is matched and sent through a high-concurrency mechanism, and full-process compliance monitoring is executed; according to the method, the accuracy is improved through dynamic label and personalized content generation, the sending efficiency is guaranteed by means of high-concurrency scheduling and channel optimization, the risk is avoided through full-process compliance monitoring, the effect is continuously optimized by means of automatic iteration, and the method has the advantages of being high in practicability and high in practicability. The method solves the problems of low precision, poor efficiency and insufficient compliance of an existing group sending method, and is suitable for various large-scale information active distribution scenes.
Owner:THE FIFTH RES INST OF TELECOMM SCI & TECH CO LTD

Radar signal processing method and system based on dual-mode adaptive clutter map

The invention relates to the technical field of radar signal processing, and particularly provides a radar signal processing method and system based on a dual-mode adaptive clutter map. An iteration strategy emphasizing historical data and an iteration strategy emphasizing current data are respectively designed for the static clutter map and the dynamic clutter map, so that the static clutter background is kept stable, and meanwhile, the dynamic clutter can be quickly tracked; and further combining a static clutter weighting curve fitted based on an MTD improvement factor and a moving clutter weighting curve fitted according to environmental noise to generate adaptive detection thresholds, thereby effectively avoiding over-suppression of a real target while remarkably suppressing various clutters. The method can greatly reduce the false alarm rate in a complex environment, guarantees the stable detection of a real target, and has good system real-time performance.
Owner:ANHUI YAOFENG RADAR TECH CO LTD

Automatic inference method and device for variable types of low-code platform

The invention discloses an automatic inference method and device for low-code platform variable types. The method comprises the following steps: screening and matching variables with automatic type identifiers in a low-code platform to obtain target variables; obtaining a default value inference result based on the type inference rule; traversing the structured model and the declaration information corresponding to the service logic to obtain a node assignment inference result; recursive derivation is carried out through a multi-round iteration strategy to obtain a dependency relationship inference result; integrating the default inference result, the node assignment inference result and the dependency inference result, and determining the initial type of the target variable; and storing the initial type based on the deduced traceability information and realizing change notification, and finally obtaining a target type. Through multi-stage inference, expression type calculation, chain dependency processing and other designs, a user does not need to manually specify a type, complex scene inference is supported, type safety is kept, the use and maintenance cost is reduced, and the development efficiency and usability of a low-code platform are improved.
Owner:XIAN GRAPE CITY SOFTWARE CO LTD

Image generation method and device based on prior guidance diffusion bridge model

This invention provides a method and apparatus for image generation based on a priori guidance using a diffusion bridge model. The method includes: obtaining an image generation result from a source image using a diffusion bridge image generation model according to a preset iterative strategy; the preset iterative strategy includes: sampling the source image to obtain the image state at the initial time step and constructing a weak prior image state; inputting the image state and the weak prior image state into the diffusion bridge image generation model respectively to obtain a predicted image and a weak prior predicted image, and determining the guidance residual; performing frequency domain modulation processing on the guidance residual to determine its frequency domain representation, and combining it with the weak prior predicted image to obtain a target predicted image; sampling the target predicted image to obtain the image state at the next time step and repeating the iteration until a preset maximum number of iterations is reached to obtain the image generation result. This invention retains the powerful generation capability of the pre-trained model while achieving flexible guidance with zero training cost, reducing computational cost and time overhead.
Owner:TSINGHUA UNIVERSITY

Chebyshev configuration-based periodic time-varying system trajectory obtaining method and system

This invention proposes a method and system for obtaining the trajectory of a periodic time-varying system based on Chebyshev placement, belonging to the field of power electronics technology. The method includes: establishing a periodic boundary value problem model of the periodic time-varying system, determining the system period and the number of placement points; performing time-scale mapping on a single-period interval, selecting Chebyshev placement points and constructing a spectral differential matrix; applying system dynamic constraints at each placement point, discretizing the differential equations into a system of nonlinear implicit algebraic equations; introducing periodic closure constraints to form a closed nonlinear algebraic equation system; and using an internal and external iterative strategy to solve the closed equation system, outputting the steady-state periodic discrete trajectory. This invention, by placing Chebyshev points within a single-period interval and constructing a spectral differential matrix, directly transforms the differential equations into a system of algebraic equations, avoiding long time-domain integration, and possesses advantages such as high computational efficiency, fast convergence speed, good numerical stability, and strong engineering feasibility.
Owner:SHANDONG UNIV +1

Hybrid new energy station reactive power support parameter adaptive collaborative optimization method and system

This invention belongs to the field of grid-connected operation control technology for new energy power generation. It provides an adaptive collaborative optimization method and system for reactive power support parameters of hybrid new energy power plants. By constructing a unified voltage source equivalent model for grid-connected and grid-connected units, and using the nodal impedance matrix method to aggregate and calculate the total equivalent reactance of the power plant to the outside world, a normalized adjustment coefficient is introduced. The heterogeneous control parameters of multiple units are mapped to a one-dimensional monotonic function with respect to the adjustment coefficient. A derivative-independent bisection iterative strategy is employed, guided by the goal of satisfying the target equivalent reactance of the power plant, to quickly find the optimal normalized adjustment coefficient and solve for the optimal parameters of each unit. This method avoids complex matrix differentiation operations and achieves precise collaborative and adaptive adjustment of multi-unit parameters.
Owner:SHANDONG UNIV

Question-paragraph enhancement and adaptive iteration control-based open domain question and answer method and system

The invention belongs to the field of natural language processing, and discloses an open domain question answering method and system based on question-paragraph enhancement and adaptive iteration control, and the method comprises the steps: executing Qaug, entering an iteration process, and executing Pgen and LLM answer generation after retrieval; a VEDG module is introduced to comprehensively score the generated answers; when the iteration step number does not exceed the preset upper limit, judging whether the comprehensive score reaches a quality threshold: if the comprehensive score reaches the quality threshold, ending iteration; if not, combining the retrieval result of the round, the LLM prediction answer and the Qaug result to reconstruct the enhancement problem, and continuing to repeat the process; and when the iteration step number reaches an upper limit, starting a BPS module, backtracking prediction answers of all historical iterations, and screening an optimal result. According to the method, the IQP-aug framework is provided, the VEDG module and the BPS module are introduced, self-adaptive selection of the multi-granularity iteration step length is achieved, the optimal iteration strategy is generated for the single-hop and multi-hop problems, and computing resources are saved while the framework universality and the result accuracy are improved.
Owner:ZHEJIANG NORMAL UNIV

Improved product key process quality prediction method under small sample data

The present application relates to a kind of product key process quality prediction method under small sample data.The present application discloses a kind of product key process quality prediction method under small sample data, by the key process parameter extraction method based on grey correlation analysis method, obtain the key process parameter of product quality prediction, construct the product key process quality learning meta prediction model based on residual network under small sample data, fusion product quality corresponding process parameter constraint, to the multi-objective quality factor under product quality prediction key process parameter is optimized;Further, based on the process parameter global optimization iterative strategy under reverse elite strategy and Levi flight, design product quality prediction multi-objective collaborative evolution global fast gradient optimization solution algorithm, to obtain the product key process quality parameter with global optimization characteristics under small sample data.The present application can effectively improve the convergence speed of product quality prediction optimization algorithm under small sample data, global optimization efficiency.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Streaming evolution industrial soft measurement method based on bidirectional self-refining domain adaptation

PendingCN121859733AEfficient captureRefining long-term temporal characteristicsDesign optimisation/simulationNeural learning methodsStream dataData mining
The invention discloses a flow type evolution industrial soft measurement method based on bidirectional self-refining domain adaptation. According to the method, forward prediction is carried out on key variables of a target domain by using a forward incremental domain adaptive iteration strategy. And performing reverse prediction on the key variables of the target domain by using a reverse self-refinement strategy. And carrying out weighted average on the predicted values of the key variables of the target domain obtained by the forward iteration and the reverse iteration to obtain a final predicted value of the key variables of the target domain. According to the method, short-term time dependence is modeled and early-stage pseudo labels are corrected through a forward incremental domain adaptive iteration strategy, so that short-term related information among streaming data is effectively captured; the reverse self-refinement strategy executes reverse transmission flow on the target, and further extracts long-term dependence information, refines pseudo labels, and extracts long-term time characteristics. The stability of prediction is guaranteed by efficiently extracting long-term and short-term autocorrelation information of data. And the excellent adaptability and prediction consistency of the soft measurement task are realized under the streaming evolution condition.
Owner:HUZHOU UNIVERSITY

Equipment knowledge graph cross-language instance alignment method

The invention discloses an equipment knowledge graph cross-language instance alignment method, and relates to the technical field of equipment knowledge graph technologies, which comprises the following specific steps of: carrying out embedded learning on structure and relation characteristics in a knowledge graph by utilizing a GCN and combining a Highway mechanism in a structure and relation joint embedding module, respectively generating structure embedding and relation embedding, and carrying out structure embedding and relation embedding on the structure and relation characteristics in a structure and relation joint embedding module; the two are fused into structural relation joint embedding through joint learning, and attribute information of instances in the knowledge graph is modeled through GCN in an attribute embedding module to generate attribute embedding; in a semi-supervised seed set enhancement module, a seed set is expanded through a semi-supervised bidirectional nearest neighbor iteration strategy, the problem of training data scarcity is relieved, and the quality of the seed set is optimized; and the structural relation joint embedding and the attribute embedding are fused into final embedding in the alignment module. According to the invention, the structure relation joint embedding module, the attribute embedding module, the semi-supervised seed set enhancement module and the alignment module are arranged, so that the alignment precision is improved.
Owner:BEIJING INFORMATION SCI & TECH UNIV

Non-rigid adsorption precision assembly method based on hierarchical imitation learning and residual force control

The invention discloses a non-rigid adsorption precision assembly method based on hierarchical imitation learning and residual force control, and the method comprises the steps: employing a terminal processor to extract a six-dimensional joint angle vector and an angular velocity vector as input, taking an assembly stage label as a supervision signal, carrying out the offline training of a full-connection neural network and a state switching judgment model, and obtaining a state switching judgment model; enabling the full-connection neural network to map high-dimensional joint space data into low-dimensional space position feature vectors, and enabling the state switching judgment model to output a state switching probability; an adopted iterative strategy optimization process comprises a strategy loading step, a task execution step, a success judgment step, an environment resetting step, a state data extraction step, a data set supplement step and a residual error strategy updating step. According to the method, a complex assembly task is decoupled into a vision-dominated rough approaching stage and a multi-modal fused fine insertion stage, a residual error strategy is introduced, and contact disturbance is inhibited by superposing a dynamic action compensation amount on a vision planning track, so that precise assembly of a non-rigid tail end is realized.
Owner:BEIJING INST OF TECH