26 results about "Bayes classifier" patented technology

The invention discloses a substation primary and secondary equipment communication prefabricated optical cable online monitoring method and system, and belongs to the technical field of communication prefabricated optical cable monitoring. The system comprises an optical cable parameter acquisition module, a communication quality evaluation module, a physical parameter analysis module, a first-aid repair path planning module and a fault database. The method comprises the following steps: optical cable parameter acquisition: acquiring data in real time, and converting high-dimensional data into low-dimensional data through a principal component analysis algorithm; communication quality evaluation: identifying communication characteristics in the low-dimensional signal parameter matrix based on a fuzzy comprehensive evaluation algorithm, and outputting a communication quality score; the physical parameter analysis module extracts physical deep features of the optical cable by using a deep belief network DBN, and inputs an improved Bayesian classifier to output a state classification result; according to the first-aid repair path planning, OTDR detection parameters are dynamically adjusted, and an optimal first-aid repair path is planned in combination with the position of the inspection robot; according to the invention, optical cable communication quality evaluation, accurate physical state classification and efficient fault repair planning are realized.

The invention discloses a small sample crack recognition method and system based on transfer learning, and the method comprises the steps: constructing an innovative and deep-coupled neural network architecture, and enabling a self-adaptive crack perception attention module integrated with a parallel asymmetric convolution kernel to recognize the linear geometric features of a crack, and generating an attention graph; then, the attention map is adopted to carry out pixel-by-pixel signal pre-modulation on an original input image, the enhanced image is sent to a pre-training MobileNetV4 backbone network integrated with a feature-level linear modulation layer, and channel-level dynamic adaptation of feature flow in the network is realized by learning affine transformation parameters; and finally, the extracted depth features are sent to a Gaussian naive Bayes classifier for classification, and depth geometric analysis is carried out on the attention map so as to realize interpretable fracture severity evaluation. According to the method, the accuracy, robustness and interpretability of crack identification are remarkably improved, and the technical bottleneck in a small sample scene is effectively solved.

The application discloses a homomorphic encryption method and application thereof to a privacy protection classifier. The specific steps of the method comprise generating a public key pk and a private key sk by using a key generation algorithm KeyGen, encrypting a plaintext Q, and decrypting a ciphertext c. Compared with the prior art, the application avoids the disadvantage that in a fixed-point representation system, a number must be represented as a shared integer to perform multiplication, achieves a good balance between calculation efficiency and communication interaction, reduces expected misclassification loss in application to privacy protection classifier encryption, and maintains the same accuracy as an original minimum Bayes risk Bayes classifier.

The application discloses an analysis method and system for noninvasive prenatal screening, and the method comprises the following steps: obtaining target high-depth sequencing data of a target sample; performing data preprocessing on the target high-depth sequencing data to obtain depth information and SNP site information of a target region; obtaining a test result through global Z test based on copy number information, obtaining a first analysis result through local microdeletion / microduplication analysis by using a forward-backward search algorithm, and obtaining a classification result through a Bayesian classifier; obtaining a second analysis result through SNP analysis based on the SNP site information; and finally comprehensively judging to obtain a target analysis result. The application can effectively reduce the complexity of experimental operation, reduce the complexity of the diagnosis process, reduce the sample error probability caused by multiple sampling, significantly improve the efficiency of clinical testing, has high practical value and application prospect, and can be widely applied to the technical field of data processing.

The invention discloses a fault diagnosis method based on integrated empirical mode decomposition and a manifold structure, and aims to research an algorithm model capable of realizing effective fault diagnosis for an early fault with weak characteristics. The main core of the method is to integrate eigenmode function components obtained by empirical mode decomposition, judge the sensitivity of the eigenmode function components to early faults so as to provide a variable reconstruction strategy more sensitive to the early faults, and meanwhile, extract local features and manifold structures by using a neighborhood preserving embedding algorithm so as to improve the robustness of the early faults. And high-order statistical features more sensitive to early faults are constructed in combination with a statistical local algorithm, so that the high-order statistical features are input into a Bayesian classifier, and finally early fault diagnosis is realized. Compared with a traditional method, the method can more effectively distinguish different types of early faults, obtains higher accuracy, and is a more excellent early fault diagnosis method.

The embodiment of the application relates to an algorithm and a device of a Bayesian classifier of a non-uniform background, which are applied to an underwater active sonar system, the algorithm comprising: obtaining underwater data to be measured and auxiliary data through the active sonar system; the number K of the auxiliary data is greater than 0; modeling classification of the unknown covariance matrix structure into a binary hypothesis testing problem; hypotheses of the binary hypothesis testing problem comprise H i Wherein i=0, 1, H0 is a case that the unknown covariance matrix is a complex conjugate symmetric matrix; H1 is a case that the unknown covariance matrix is a real symmetric matrix; a Bayesian model is set, the Bayesian model comprising a complex inverse Wishart random matrix and a real inverse Wishart random matrix; a classifier for distinguishing the two hypotheses is obtained by using a minimum error probability criterion.

The invention discloses a circRNA (Ribonucleic Acid) and miRNA (Micro Ribonucleic Acid) interaction prediction system and a circRNA and miRNA interaction prediction method of a graph Fourier pulse neural network. The method comprises the following steps: on the basis of high-throughput sequencing omics data of complex diseases, constructing a heterogeneous biological information network containing drugs, diseases, proteins, circRNA, miRNA and lncRNA; converting the topological features of the entities into a unified feature space by using a graph convolutional network; designing a pulse graph neural network in combination with Fourier coding and a pulse neural network, and extracting a topological structure and high-order semantic features in the network; fusing sequences, topologies and semantic features of circRNA and miRNA through a gate multilayer perceptron to obtain embedding features of circRNA and miRNA; and finally, the interaction of circRNA and miRNA is predicted by adopting a Bayesian classifier. According to the method, heterogeneous biological information is modeled from the perspective of network science, Fourier coding, spiking neurons and graph embedding learning are utilized, the action mechanism of circRNA and miRNA in complex diseases can be disclosed, and the method has good practicability and application prospects in the fields of artificial intelligence, life science, clinical medicine and the like.

The invention relates to the technical field of edge calculation, in particular to a garbage collection and transportation vehicle remote monitoring method and system based on edge calculation, and the method comprises the following steps: a vehicle-mounted weight sensor collects a real-time weight difference to obtain a weight increment, a tilt angle sensor collects a tilt angle and derives to obtain a change rate, and a loading or disturbance state is paired, compared and marked; after monitoring that the dip angle peak value falls back to the difference, Kalman filtering generates an unloading instruction, weight monitoring is started to calculate the mean value and the tail end difference to confirm unloading completion, the operation state is updated, the position time is packaged, the loading and unloading record is input into a Bayesian classifier, and remote monitoring data is output. Loading and disturbance state distinguishing is achieved through vehicle weight increment and dip angle change rate joint analysis, dip angle peak value falling stage continuous monitoring is combined with filtering to weaken noise, unloading is accurately confirmed through the weight falling trend, position and time information is classified and then is synchronously output with the loading and unloading state, and it is guaranteed that recording in the whole process is continuous and credible. And the remote monitoring track is complete and traceable.

This disclosure provides a security detection method, apparatus, storage medium, and electronic device based on a large model, relating to the field of network security technology. The method includes: acquiring training sample emails to train a Bayesian classifier, determining the trained Bayesian classifier; using the trained Bayesian classifier to detect emails to be detected, determining a first detection result; if the first detection result is in a first detection interval, determining structured prompt words based on the first detection result; inputting the structured prompt words into a locally deployed large language model, determining the output result of the large language model; and performing either allow or block actions on the emails to be detected based on the first detection result and the output result of the large language model. This achieves accurate email identification.

The invention relates to the technical field of electric appliance operation mode identification, in particular to a non-intrusive electric appliance operation mode identification method and system, and the method comprises the steps: calculating an active power signal according to the collected voltage and current signals at a power utilization inlet of a user; using an unsupervised clustering method to complete load mode mining; extracting load characteristics according to each group of detected load modes; constructing a classification model to perform electric appliance mode identification; according to the invention, the active power signal is calculated by collecting the voltage and current signals at the power utilization inlet of the user, so that the detection of the load event is completed, and the non-intrusive identification of the operation mode of the electric appliance is realized; the calculation of the local density is completed according to the Euclidean distance of the elements in the power characteristics, so that the accuracy and efficiency of load mode recognition are improved; the Gaussian naive Bayesian classifier is constructed, and the Gaussian naive Bayesian classifier is utilized to complete the identification of the electric appliance mode, so that the identification of the electric appliance mode is more reliable.

The invention relates to an underground water environment risk assessment method based on big data, and relates to the technical field of underground water monitoring and pollution risk assessment. According to the method, water quality parameter data filling is carried out based on a big data pre-trained water quality parameter filling model, a Bayesian classifier or a K nearest neighbor mean value through adaptive missing rate and data type selection, and the calculation efficiency and prediction precision of different missing rates are balanced; a similarity function is defined by considering sampling sites and water quality parameters, repeated data screening is carried out, and data with similar water quality parameters and non-similar sites are prevented from being deleted. Clustering and quartering anomaly mixed detection is utilized to consider univariate statistical anomaly and multivariate structure anomaly, and true pollution data is prevented from being deleted by mistake. A groundwater monitoring data set is utilized, and a composite groundwater environment evaluation model is trained through a differential evolution optimization fusion weight mode to estimate a groundwater environment index value. Model complementation is utilized to reduce deviation; and the integration benefit of the model is maximized by optimizing the weight through differential evolution.

The invention discloses a transformer risk assessment method and device based on multi-index fusion, relates to the technical field of electrical performance test and electrical fault detection, and mainly aims to solve the problem of low accuracy of existing transformer risk assessment. The method mainly comprises the steps that comprehensive risk values of different transformers are calculated according to static risk indexes of the transformers, static risk levels are determined according to the comprehensive risk values, and real-time monitoring data in the operation process of the transformers are obtained according to data monitoring frequencies determined according to the static risk levels; according to the real-time monitoring data, identifying a first state evaluation result of each transformer through a pre-constructed Bayesian classifier, and identifying a second state evaluation result of each transformer through a pre-constructed fuzzy evaluation model; and for any transformer, performing cooperative verification according to the first state evaluation result and the second state evaluation result of the transformer to obtain a risk evaluation result of the transformer. The method is mainly used for evaluating transformer risks.

This invention provides a method for detecting battery thermal runaway anomalies and a battery management unit. During detection, operational data for each battery sub-module is acquired. Based on this data, the corresponding Channenzo entropy or Channenzo entropy change rate is obtained and compared with a set target threshold. When the parameter value in the sample to be detected exceeds the target threshold, it is considered thermal runaway anomaly data. Simultaneously, a Bayesian classifier is used for further data processing, and the abnormal data is output and an alert is issued, thereby effectively improving the accuracy of battery operational data detection and ensuring battery usability and safety performance.

The application discloses a seabed soil type automatic identification method based on a naive Bayes algorithm. The method comprises the following basic steps: 1) CPT data acquisition; 2) attribute feature calculation; 3) normalized cone tip resistance fluctuation feature calculation; 4) feature parameter filtering; and 5) using a Bayes classifier to identify the seabed soil type. The method has the advantages of simplicity, small calculation amount, good real-time performance, saving of manpower and easiness in implementation, and is suitable for automatic identification of seabed soil types.

An object detection assistant system includes a memory and a processor. The processor is coupled to the memory. The memory stores one or more commands. The processor accesses and executes one or more commands of the memory. One or more commands include inputting a detection result parameter output by an object detection neural network for object detection of an image to an assistant neural network to output a first correction coefficient after processing by the assistant neural network, where the detection result parameter includes object information and a first confidence; inputting the first correction coefficient and detection result parameters to a Bayesian classifier to output a second correction coefficient; and adjusting the first confidence according to the second correction coefficient to obtain second confidence, and the second confidence being taken as the first confidence of the adjusted detection result parameter.

The application discloses a communication modulation identification model training method and device, sensitive feature sets of actually collected communication signals are extracted, the sensitive feature sets are input into a deep neural network model to obtain initial classification results, the signals are input into a naive Bayes classifier, the naive Bayes classifier is initially constructed by using the communication signals, a reward threshold thr is set, a reward function Q(k) is constructed based on the reward threshold thr, the naive Bayes classifier is optimized based on a reward value and a penalty value to obtain a naive Bayes classifier with a weight value, and the weight of the naive Bayes classifier is updated by using a reinforcement learning algorithm. The rough classification results of the deep neural network model are classified again by using the naive Bayes classifier, the naive Bayes classifier is optimized by setting the reward value and the penalty value, the weight of the naive Bayes classifier is continuously updated by using the reinforcement learning algorithm, and the accuracy of the communication modulation identification model in identifying signals is further improved.

The application discloses a multi-density data classification method and system based on density stratified clustering, and belongs to the technical field of multi-dimensional data classification. The method separates data in different density layers by using a Gaussian mixture model to perform density stratification on data of each category, and then uses a DBSCAN algorithm to identify a plurality of data regions in each density layer to form sub-categories. Finally, the sub-categories are identified and summarized by using a Bayesian model, so that the classification of multi-density data is realized. The method can more accurately depict the internal structure of data, and enables the Bayesian classifier to more accurately adapt to the characteristics of different density regions.

This invention belongs to the field of industrial control system safety technology and discloses a method for detecting protective layer failure in petroleum refining units based on multi-source data fusion. This invention obtains a normalized process monitoring data training matrix and a statistical alarm information matrix by normalizing and adjusting alarm levels using data collected from petroleum refining unit simulation software. Following the principle of maximum correlation and minimum redundancy, the variable set for protective layer failure detection and diagnosis is selected. The invention then fuses the protective layer failure detection and diagnosis results obtained from the statistical alarm information data using a discrete Bayesian classifier and from the protective layer failure detection and diagnosis results obtained from the process monitoring data training matrix using a continuous Bayesian classifier, resulting in the final protective layer failure detection and diagnosis results. Compared with existing methods, this invention creatively integrates statistical alarm information data, eliminating the interference of noise in the process monitoring data on the detection and diagnosis of protective layer failure.

This invention discloses a method and system for recommending demand response mechanisms at the feeder level in distribution networks based on Bayesian classification. The method includes: Step 1, randomly acquiring hourly output data of distributed photovoltaic (PV) power and electric vehicle (EV) behavior data from each feeder in the distribution network using the Monte Carlo method, and selecting typical scenario data; Step 2, extracting feeder-level feature attribute data from the typical scenario data, using the feature attribute data as input conditions, and having an improved Bayesian classifier output feeder flexibility category labels, recommending feeder-level demand response mechanisms, including price-based demand response and quasi-linear demand response, to the distribution network operator based on the flexibility category labels; Step 3, constructing feeder-level load quasi-linear variables; Step 4, performing PV-energy storage-EV collaborative optimization scheduling. This invention achieves refined management of the distribution network and collaborative optimization of PV-energy storage-charging systems by intelligently assessing feeder flexibility and constructing feeder-level load quasi-linear variables.

The invention relates to the technical field of power load analysis and prediction, and discloses a power load analysis and prediction system based on big data and information fusion, and the system comprises the steps: collecting the data of a sensor, and generating a feature vector of each classroom; using a machine learning model to predict the use probability of the classroom in a future time period, and using a dichotomy cross entropy damage function to optimize the predicted use probability; according to the class schedule matrix and the predicted use probability, the conditional probability of the three classes of classroom use states is calculated through a multi-classifier, and the classroom use state with the highest conditional probability serves as a judgment result; using a Bayesian classifier to analyze the power load required by the classroom according to the determination result and the feature vector of the classroom, and generating a lighting control strategy based on the power load; the lighting power matrix is generated according to the lighting control strategy, the lighting power matrix is converted into the hardware control signal, light of the classroom is driven to operate according to the lighting control strategy, energy is saved, and lighting operation cost is reduced.

The invention relates to a cardiovascular disease risk cycle assessment method based on big data, and the method is characterized in that the method comprises the steps: obtaining a preliminary diagnosis result through correlation analysis and a support vector machine model according to the basic information and symptom performance of a patient; according to comprehensive information such as electrocardiograms, echocardiograms, blood examination and CT examination, the cardiovascular conditions are classified through a correlation analysis algorithm and a Bayesian classifier. Physiological indexes such as electrocardio, blood pressure and blood fat are monitored regularly, a physiological change period is obtained, and influences of factors such as diet, exercise and emotion on the physiological change period are analyzed. Based on the electrocardiogram period, the blood pressure fluctuation period and the blood fat change period, an ARIMA model is established to predict the lesion period. And further fusing surgical treatment, drug treatment, lifestyle adjustment and psychological treatment schemes, and constructing a recurrence probability and recurrence cycle prediction model by combining basic information and physiological change cycle of the patient. And finally, dynamically adjusting a monitoring period according to a prediction result, and providing a monitoring result and personalized adjustment suggestions for a doctor or a patient through a medical system, thereby realizing periodic and dynamic assessment and management of cardiovascular disease risks.

The invention discloses a multi-parameter integrated non-contact real-time monitoring and control cell culture system and a multi-parameter integrated non-contact real-time monitoring and control cell culture method. According to the method, monitoring values are obtained through an in-bottle sensor module and an environment parameter sensor module which are arranged inside and outside a culture bottle respectively, the monitoring values comprise multi-dimensional monitoring data, and a neural network model or a Bayesian classifier is adopted to calculate a state score in a weighted summation mode according to the monitoring values; the cell state in the culture bottle can be comprehensively fed back by optimizing the state score by adjusting the weight of the monitoring numerical value, the accuracy is improved by optimizing the state score by adjusting the weight of the monitoring numerical value, a liquid path system communicated to the interior of the culture bottle is controlled according to the state score, automatic processing can be completely achieved, and the efficiency is improved. The success rate and efficiency of cell culture are improved, manual intervention is reduced, and the pollution risk is reduced.

The invention relates to the technical field of vehicle traction control systems, in particular to a traction control method and system for cross-country road conditions, and the method comprises the steps: carrying out the preprocessing of a vehicle signal, predicting a wheel speed difference based on a hybrid model, generating a slip early-warning flag bit, a severity level and a control index through a naive Bayes classifier, and carrying out the calculation of the slip early-warning flag bit, the severity level and the control index. And the driving force or the braking force is adjusted in real time in combination with self-adaptive sliding mode control and neural network disturbance compensation. According to the invention, the wheel speed difference trend is predicted through the hybrid model to pre-judge the slip risk in advance, the naive Bayesian classifier is used to independently generate the early warning flag bit, the severity level and the control index to realize accurate decision, and the slip is inhibited in real time in combination with adaptive sliding mode control and neural network disturbance compensation. And based on the wheel speed deviation and the driver somatosensory dynamic self-learning optimization parameters, the manual calibration workload is remarkably reduced, and the control precision and response efficiency of the off-road working condition are comprehensively improved.

The application discloses a water quality evaluation machine learning Bayesian model based on suspended particle matter density, and comprises the following steps: collecting and testing the suspended particle matter density indexes and other multiple water quality indexes of a plurality of water quality samples; establishing an entropy weight Bayesian model for water quality evaluation; calculating entropy weight values; calculating the posterior probability P of the samples being in class I to class V water by using the distance formula with the weight; dividing the adjacent grades between class I to class V water quality grades into ten equal parts, and determining the water quality grade according to the difference between the highest probability value and the second highest probability value in the posterior probability P; matching the water quality grade of each sample with the suspended particle matter density of the sample, selecting a large number of samples as a training set, and generating a water quality evaluation Bayesian classifier based on suspended particle matter; the application simplifies the existing water quality rapid evaluation method, improves the accuracy of the evaluation by improving the calculation formula in the prior art, and realizes the rapid evaluation of the water quality grade based on the suspended particle matter density.

The application provides a thick plate T joint multi-pass welding position autonomous decision-making method based on an analytic hierarchy process, which can effectively improve the thick plate welding efficiency. First, a groove contour recognition method is designed based on an improved Gabor filter and a Bayesian classifier; second, a groove contour feature point extraction method is realized based on the slope mutation characteristics; then, a three-layer analytic hierarchy model is established by using the extracted feature points and welding experience, and an automatic acquisition algorithm for the comparison matrix elements is designed; finally, the effective welding position is decided from the extracted feature points based on the maximum posterior weight criterion. The application realizes the autonomous decision-making process of the welding position by taking the groove contour feature points as the candidate welding initial positions and using the machine vision and welding experience, which helps to control the web corner deformation while improving the welding efficiency, and has the advantages of good real-time performance, high precision and strong robustness.

The application discloses a wind turbine blade control method, device, equipment and storage medium, and relates to the technical field of wind power generation. The method comprises the following steps: acquiring historical operation state data and historical clearance data of a target wind turbine, and dividing the historical clearance data into a dangerous clearance data set and a safe clearance data set based on a preset dangerous clearance threshold; performing correlation analysis on each dangerous clearance data in the dangerous clearance data set and the corresponding operation state data, and on each safe clearance data in the safe clearance data set and the corresponding operation state data to determine a first training data set and a second training data set; and generating a clearance Bayesian classifier model corresponding to the target wind turbine; and determining the blade clearance state of the target wind turbine according to the clearance Bayesian classifier model and current operation state data to control the operation of the wind turbine blade. In this way, it can be determined whether to start the variable pitch according to the current clearance state of the target wind turbine at any time to protect the safety of the wind turbine blade.