3 results about "Weight value" patented technology

The invention relates to the technical field of intelligent diagnosis, and provides a machine tool bearing diagnosis method and system based on improved SMOTE. According to the method, for the problem of data imbalance caused by scarcity of fault samples in bearing vibration signals, the vibration signals are obtained and processed into a feature sample set; identifying minority class fault samples, calculating weight values according to sample distribution of the minority class fault samples in the feature space, adaptively determining a generation area for each sample based on the weight values, and synthesizing new samples to balance data; and finally using the balanced sample set to train a fault diagnosis model for classification. According to the bearing fault diagnosis method, through weight-driven adaptive region adjustment, the classification boundary is effectively protected while the sample diversity is enhanced, the accuracy of bearing fault diagnosis is improved, and the missing report rate of minority class faults is effectively reduced.

The application discloses a power infrastructure project risk assessment method based on a multi-factor dynamic weighting algorithm, and belongs to the technical field of project management. The steps include: filtering noise from original business flow data, normalizing and compressing the filtered data fields to obtain a standardized data set; stripping factors from the standardized data set to obtain an original risk factor spectrum; assigning weights to the original risk factor spectrum to obtain an initial weighted factor set; calling a weight correction coefficient matrix in a preset benchmark project database, and dynamically and iteratively calibrating the initial weight values to obtain a stage weight vector; weighting and reconstructing the initial weighted factor set to obtain a risk feature vector; matching the risk feature vector with a fuzzy membership degree to obtain an assessment conclusion; and standardizing and packaging the assessment conclusion, the risk feature vector and the stage weight vector to obtain a risk assessment data message. The application can improve the accuracy and efficiency of power infrastructure project risk assessment.

The application provides a bridge construction risk assessment method, system, electronic equipment and storage medium, and belongs to the technical field of bridge construction safety; the method comprises the following steps: confirming a risk analysis total target of a target bridge; decomposing the risk analysis total target to construct a risk evaluation model of a layered structure; determining weight values corresponding to an evaluation set by using an analytic hierarchy process, and determining a risk evaluation grade based on the evaluation set and the weight values; scoring each evaluation factor in the risk evaluation grade to establish a membership matrix; performing operation on the membership matrix by using a comprehensive weighting method to obtain a fuzzy evaluation matrix; calculating a judgment matrix corresponding to the evaluation set according to the fuzzy evaluation matrix, and obtaining the risk grade of the evaluation set based on the maximum membership degree principle. The application determines the evaluation set composed of risk factors and the corresponding weight by using a hierarchical decomposition and analysis method, and quantifies the risk factors by using a fuzzy comprehensive evaluation method of mathematics, so that the comprehensiveness and accuracy of the evaluation result are improved.