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61 results about "Sequential decision" patented technology

Sequential decision making. In artificial intelligence, sequential decision making refers to algorithms that take the dynamics of the world into consideration, thus delay parts of the problem until it must be solved. It can be described as a procedural approach to decision-making, or as a step by step decision theory.

Method for optimal maintenance decision-making of hydraulic equipment with risk control

The invention belongs to the field of maintenance decision-making of hydraulic equipment, and relates to a method for the optimal maintenance decision-making of hydraulic equipment with risk control. The method mainly comprises three steps: 1) judging whether a system is in a status of defect by using a variable-weight association rule algorithm, if so, calculating the probability values of occurrences of latent faults of the system; 2) calculating the comprehensive evaluation value for the consequence of each latent fault by using a BP neural network; and 3) multiplying the probability values obtained in step 1 by the comprehensive evaluation values obtained in step 2 so as to obtain the VaRs (values-at-risk) of the latent faults, judging whether the VaRs are more than a specified threshold, if so, ranking the VaRs in descending order so as to determine the maintenance sequence; otherwise, returning to the step of monitoring. The method can judge whether a device is in a status of defect, judge the type of the latent fault and calculate the probability values of occurrences of latent faults only through a calculation; and compared with traditional risk maintenance methods, the method of the invention improves the accuracy of fault diagnosis, speeds up the diagnosis speed, and provides a better reference for online decision-making.
Owner:天津开发区精诺瀚海数据科技有限公司

Knowledge graph inference method based on relation detection and reinforcement learning

The invention discloses a knowledge graph inference method based on relation detection and reinforcement learning. The method comprises the steps that on the basis of character string fuzzy matching between a domain knowledge graph and an entity dictionary and a CNN-LSTM-CRF-based entity recognition model, an entity in a question input by a user is detected, and entity detection is completed; relation detection is completed by a neural network based semantic matching model, and the relation detection model is characterized in that low-dimension manifold expression is obtained through the neural network according to the input question, the relation related to the question and the relation not related to the question, on the basis of the low-dimension manifold expression, rank loss optimization model parameters are adopted, so that the question can search the relation set for the relation most similar to the semantics; according to knowledge graph inference based on reinforcement learning, for each time step, on the basis of a strategy function pi theta, under the current entity et, one out-going relation rt+1 is selected, the next entity et+1 is executed, the final entity eT is reached through a preset sequential decision with the maximum inference path length T, and the entity eT is adopted as an answer of the question to be output.
Owner:智言科技(深圳)有限公司

Extra-high-voltage alternating current and direct current transmission mode applicability selecting method and device using same

InactiveCN102609792AReflect security feature requirementsAnalysis results are intuitiveForecastingPower gridUnit system
The invention relates to an extra-high-voltage alternating current and direct current transmission mode applicability selecting method and a device using the same. The method includes the steps: firstly, determining index parameters of an extra-high-voltage direct current transmission mode; secondly, establishing alternative schemes for extra-high-voltage transmission modes according to a power transmission scale and establishing a simulation model according to power transmission requirements and conditions of a power grid system; thirdly, calculating the index parameters in the alternative schemes in the second step according to the simulation model; fourthly, determining integrated weight according to the calculated index parameters in the alternative schemes in the third step; and fifthly, performing comprehensive optimization according to the determined index parameters in the alternative schemes in the fourth step based on fuzzy optimization to determine the optical transmission scheme in the alternative schemes. A penalty function is brought into an index calculation process, the requirement of indexes on safety feature can be more effectively met, the problem of multi-objective decision is converted into the problem of sequential decision for a unit system in a multilevel multi-objective level model, the problem of engineering evaluation is theorized, and analysis results are visual and persuasive.
Owner:STATE GRID HUBEI ELECTRIC POWER COMPANY +1

Smart In-Vehicle Decision Support Systems and Methods with V2I Communications for Driving through Signalized Intersections

InactiveUS20190206247A1Safe and efficientImproves intersectionAutonomous decision making processArrangements for variable traffic instructionsIntelligent decision support systemDriver/operator
Smart in-vehicle decision support system has been developed to address current challenges and offers a new approach to make right stop / go decisions for vehicles to drive through a signalized intersection. The methods and systems described herein exploit a novel conceptualization of the decision support problem as an integration process, where a decision support model takes advantages of vehicle-to-infrastructure communications and fuses the inputs from vehicles and intersection, which comprise key information of vehicle motion, vehicle-driver characteristics, signal phase and timing, intersection geometry and topology, and the definitions of red-light running, to explore a more complete variable space of physical and behavioral information and provide safer and more efficient decision supports to vehicles driving through a signalized intersection than the previous methods and systems. The novel formulation of the decision support model as a probabilistic sequential decision making process incorporates a set of decision rules that are responsible for different situations into the present invention, which enables each decision rule to quickly make a right decision and better improves both traffic safety and intersection throughput than the other existing formulations.
Owner:XIE XIAOFENG +1

User real-time autonomous energy management optimization method based on near-end strategy optimization

The invention discloses a user real-time autonomous energy management optimization method based on near-end strategy optimization. The management optimization method comprises the steps of S1, classifying and modeling user DER equipment; S2, modeling a user real-time autonomous energy management optimization problem into a sequential decision problem based on classification and modeling of the user DER equipment in the step S1; S3, extracting the future trend of real-time time sequence data by using a long short-term memory neural network, and assisting the deep reinforcement learning in the steps S4 and S5 to carry out strategy optimization; S4, inputting the future trend extracted in the S3 and internal state characteristics observed by an energy management intelligent agent into a strategy function based on a deep neural network, enabling the energy management intelligent agent to learn discrete and continuous actions at the same time, and achieving the control of the equipment; and S5, learning an energy management optimization strategy in the discrete and continuous actions in the step S4 by adopting a near-end strategy optimization algorithm. According to the management optimization method, the adaptability of the strategy to uncertainty is improved while the power consumption cost is minimized.
Owner:SOUTHEAST UNIV

Optimal power flow calculation method considering discrete and sequential decision variables for large-scale power distribution network

The invention relates to an optimal power flow calculation method considering discrete and sequential decision variables for a large-scale power distribution network. The optimal power flow calculation method is characterized by comprising the following steps of building a mathematical model of a complicated three-phase unbalanced power distribution network, carrying out complicated optimal power flow calculation decomposition, and carrying out a simplification process on network loss calculation of the three-phase unbalance power distribution network. By the optimal power flow calculation method, the complicated optimization problem can be decomposed into an integral linear programming primal problem and a non-linear feasible subproblem, decision making optimization and system security constraint are organically combined by using mutually-iterated calculation decisions, the optimal power flow is embedded to a decision process, and meanwhile, rapid calculation on asymmetric power flows at a large scale is achieved. The optimal power flow calculation method is suitably used for three-phase unbalance power flow calculation, looped network structure, bidirectional power flows, real-time decision of discrete and sequential decision and optimal power flow, and has the advantages of scientific reasonableness, high adaptability, operation accuracy, high speed and the like.
Owner:HULUNBEIER ELECTRIC POWER BUREAU OF EAST INNER MONGOLIA ELECTRIC POWER COMPANY +1

Multichannel transmission scheduling method based on time domain interference alignment in underwater acoustic network

The invention provides a multichannel transmission scheduling method based on time domain interference alignment in an underwater acoustic network. The method comprises the following steps: S1, network topology representation is carried out, a time slot division model is adopted, the whole message transmission process is divided into a plurality of time slots with the length of [tau], the transmission delay between nodes refers to the time required by message transmission between two nodes, a transmission delay matrix is used for representing a network topology structure, and elements in the matrix represent the number of the time slots required by message transmission between the nodes; S2, transmission scheduling is initialized, the states of the nodes are stored through a three-dimensional matrix, and transmission time slots of the nodes, selected transmission channels and destination nodes are determined; and S3, optimal transmission decision search is carried out, an optimal scheduling problem is searched to be regarded as a sequential decision problem, and the problem can be solved by using dynamic planning. In the multi-channel network model, a plurality of nodes can transmit messages in one time slot at the same time, so that data conflicts are reduced, and the network throughput is increased.
Owner:HUAQIAO UNIVERSITY

Method and apparatus for discriminating speech from voice-band data in a communication network

A method and an apparatus accurately discriminates between speech and voice-band data (VBD) in a communication network by calculating self similarity ratio (SSR) values, which indicate periodicity characteristics of an input signal segment, and/or autocorrelation coefficients, which indicate spectral characteristics of an input signal segment, to generate a speech/VBD discrimination result. In one implementation, the speech-VBD discriminating apparatus calculates both short-term delay and long-term delay SSR values to analyze the repetition rate of an input signal frame, thereby indicating whether the input signal frame has the periodicity characteristics of a typical speech signal or a VBD signal. The speech-VBD discriminating apparatus further calculates a plurality of short-term autocorrelation coefficients to determine the spectral envelope of an input frame, thereby facilitating accurate speech/VBD discrimination. According to one implementation of the present invention, the speech-VBD discriminating apparatus relies on sequential decision logic which improves classification performance by recognizing that changes from speech to VBD or vice versa in a communication medium are unlikely, and discounts discrimination results for relatively low-power signal portions which are more susceptible to errors to further improve discrimination accuracy.
Owner:ALCATEL-LUCENT USA INC +1

Parameter optimization method for decision-making model of brain-computer interface system

The invention relates to the technical field of brain-computer interfaces, especially a parameter optimization method for a decision-making model of a brain-computer interface system. The method comprises the following steps: (1), collecting brain-computer training data, and carrying out the preprocessing; (2), carrying out data classification through a linear space integrated single detection method, and the positioning of an evidence-accumulating start process. The method employs the linear space integrated single detection method to carry out the classification and recognition of two experiment conditions in training data, carries out the time locating of the evidence-accumulating process in a decision-making model through recognizing the change tendency of the accuracy with time in a single experiment, and carries out the parameter optimization of a sequential decision model. Compared with a previous sequential decision model, the method carries out the locating of the evidence-accumulating process in the decision-making model, eliminates the ineffective classified information accumulation process, carries out the accumulation of the effective classification information in the evidence-accumulating process, and improves the instantaneity of the brain-computer interface system based on the decision-making model.
Owner:DALIAN UNIV OF TECH

Container-based edge computing resource allocation method and system for industrial internet of things

The invention discloses a container-based edge computing resource allocation method and system for the Industrial Internet of Things. The method is as follows: according to the data types collected by the perception layer, the tasks are divided into n types, and through historical data statistics, it is obtained that the tasks arrive at the edge successively Probability relationship on the server cluster; according to the system state space and decision space, allocate computing resources to real-time tasks and make sequential decisions; according to the resource allocation algorithm based on reinforcement learning, the system allocates resources from low, medium and high according to the current state Select the most reasonable strategy among the strategies to allocate resources to the current task; build a task scheduling processing model, create a container, and then schedule data to the container for processing and analysis. After the task is completed, delete the container to complete the allocation. In the case of limited resources, the present invention allocates different types of data computing resources, creates containers for processing and analysis, and improves resource utilization efficiency and the total rate of task processing. The invention is applicable to the field of data processing of the industrial internet of things.
Owner:SUN YAT SEN UNIV
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