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93results about How to "Fully excavated" patented technology

Blind hyperspectral unmixing method and system based on end member query design and Transform attention mechanism

The invention discloses a blind hyperspectral unmixing method and system based on end member query design and a Transform attention mechanism, and relates to the field of hyperspectral image processing. The problems that a current simplified mixing mechanism is mainly a linear mixing model, ground feature abundance and corresponding end member accuracy are low, a deep learning blind hyperspectral unmixing method depends on good end member initialization, and unmixing performance is seriously reduced during end member initialization are solved. The method comprises the following steps: constructing an abundance mapping module, extracting features in a hyperspectral image, and performing abundance decoding on the features to form an estimated abundance image; mapping the abundance graph into abundance embedding; constructing a Transform module fitted by a hybrid mechanism, and combining end member query, reconstruction query and abundance embedding through the Transform module fitted by the hybrid mechanism to obtain reconstruction query of end member information and abundance information; the original hyperspectral image is remodeled according to the reconstructed query. The method is applied to the field of blind hyperspectral image unmixing.
Owner:HARBIN INST OF TECH

Urban traffic flow prediction method based on deep learning

The invention discloses an urban traffic flow prediction method based on deep learning. The technical scheme of multi-source heterogeneous traffic data fusion and multi-scale spatial-temporal feature extraction is adopted. Comprising the following steps: acquiring multi-source traffic data through a vehicle-mounted GPS, road test equipment and a traffic monitoring video, performing data cleaning, space-time alignment and feature extraction, and performing fusion by adopting methods such as Kalman filtering and the like to obtain unified traffic state characterization; constructing a network model comprising three LSTM units with different scales, and modeling short-term, medium-term and long-term change characteristics of traffic flow by taking 5-10 minutes, 1 day and 1 week as time steps respectively; an Attention mechanism is introduced to carry out adaptive fusion on the multi-scale features; mapping various external environment data into low-dimensional feature vectors through representation learning, and introducing the low-dimensional feature vectors into the model; a knowledge distillation technology compression model is adopted, online service is deployed, and traffic flow prediction of the next one hour is generated every 5-10 minutes. The method improves the accuracy and real-time performance of traffic flow prediction, and has a good engineering application value.
Owner:WUXI TAIHU UNIV

Knowledge graph construction method and system for multi-modal cultivated land data

The invention relates to a knowledge graph construction method and system for multi-modal cultivated land data. The method comprises the following steps: constructing a cultivated land protection field knowledge system; entities, relations and attributes are extracted and stored in a knowledge graph, corresponding description information is obtained and input into an incomplete multi-modal data fusion algorithm model based on deep semantic matching for data feature fusion, cultivated land data in different modals are mined, the knowledge graph is supplemented and adjusted, and the knowledge graph of the multi-modal cultivated land data is constructed. Entities, relationships and attributes are extracted and stored in the knowledge graph, so that the constructed knowledge graph can be ensured to be more accurate, the coverage field is wider, and the application of the knowledge graph is more diversified and accurate; data feature fusion is carried out in an incomplete multi-modal data fusion algorithm model, so that the heterogeneous problem in the knowledge graph is effectively solved; the cultivated land data in different modes are fully mined, and the knowledge graph can become more powerful in tasks such as self-complementation and intelligent question and answer.
Owner:GUANGDONG YOUYUAN LAND INFORMATION CO LTD +1

Federal learning-based magnetocardiogram analysis method, apparatus and device, and medium

The invention relates to a federated learning-based magnetocardiogram analysis method, device and equipment and a medium, and relates to the technical field of magnetocardiogram analysis, and the method comprises the following steps: aiming at a preset arrhythmia analysis task, configuring a corresponding independent task head on a frozen shared feature backbone network, and caching a corresponding reference logic value; and configuring a corresponding new task head for the new task, and inserting a low-rank adapter module into the frozen shared feature backbone network so as to perform joint optimization on the inserted low-rank adapter module, the new task head and the independent task head, updating parameters of the low-rank adapter module, parameters of the new task head and parameters of the independent task head, according to the method, the limitation of a data island is broken through, data resources of multiple centers are integrated, massive unlabeled data can be fully mined, the model feature extraction capability is improved, the situation that new and old data are used for retraining the model is avoided, and the safety of the federal continuous learning model is improved. And the old category diagnosis capability is ensured.
Owner:杭州极弱磁场国家重大科技基础设施研究院

Joint preprocessing and fusion decoding method based on electroencephalogram and functional near-infrared signals

PendingCN122046262Aquality improvementImproved noise suppressionPattern recognitionDecoding methods
The invention discloses a combined preprocessing and fusion decoding method based on electroencephalogram signals and functional near-infrared signals, which comprises the following steps of: synchronously acquiring the electroencephalogram signals and the functional near-infrared signals, taking a task trigger event as a unified time reference, and carrying out basic preprocessing of time alignment and modal self-adaption on two modal signals to obtain a functional near-infrared signal; a pre-trained cross-modal noise joint modeling module is utilized to perform joint modeling on cross-modal joint noise features caused by a common noise source, collaborative denoising processing is performed on multi-modal signals based on the cross-modal joint noise features, multi-modal denoising representation is obtained, a cross-modal feature interactive modeling mode based on an attention mechanism is obtained, and the multi-modal noise is obtained. And dynamically modeling the correlation between different modal features, realizing deep fusion of multi-modal complementary information, carrying out decoding processing based on the fused features, and outputting a corresponding brain-computer interface control instruction or task identification result. According to the method, the decoding accuracy and robustness of the brain-computer interface system in a complex task scene are enhanced.
Owner:SOUTH CHINA UNIV OF TECH

Two-stage multi-mode bearing fault diagnosis method based on pre-training large model

The invention discloses a two-stage multi-mode bearing fault diagnosis method based on a pre-training large model, and belongs to the technical field of bearing fault diagnosis. The method aims at solving the problems that a traditional method is poor in generalization and poor in robustness under multiple working conditions and small sample conditions. The method comprises the following steps: firstly, constructing a learnable multi-modal Tokens which comprises a multi-scale patch Token, a feature Token and a fault Token, and realizing efficient extraction and fusion of multi-modal features; a time-frequency semantic fusion module is introduced, and comprehensive time-frequency features are output through adaptive frequency coding, time coding and multi-modal fusion; and inputting the multi-modal feature sequence into a pre-training BERT model, and adopting a two-stage training strategy, in the first stage, performing self-supervised pre-training by taking mask signal reconstruction as a target, and in the second stage, performing parameter fine tuning by taking fault classification as a target. According to the method, the diagnosis accuracy and the cross-working-condition generalization ability under the small sample condition can be remarkably improved.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY

Perception method based on multi-semantic space attention and Daubechies wavelet double-branch Mama

The invention discloses a perception method based on multi-semantic space attention and Daubechies wavelet double-branch Mama, and belongs to the field of hyperspectral image processing. The problem that in the existing Mama-based model feature extraction process, the capacity of capturing multi-scale local structures and direction sensing information is insufficient is solved. The method comprises the following steps: inputting a hyperspectral image; projecting the spectral vector to an embedding space through an embedding layer to obtain an embedding feature; inputting the embedded features into an encoder, wherein the encoder comprises an SMSAMama branch, a DWTMama branch and a self-adaptive feature fusion module; the SMSAMama branch is used for extracting spatial features; the DWTAMba branch is used for extracting spectral features; the adaptive feature fusion module performs weighted integration on the spatial features and the spectral features by using randomly initialized fusion weights; and inputting the integrated features into a segmentation head to generate a final perception result. The method is used in agricultural monitoring and urban planning fields.
Owner:HARBIN ENG UNIV

Noun metaphor identification method based on large language model and graph neural network

A noun metaphor recognition method based on a large language model and a graph neural network belongs to the technical field of natural language processing, is used for accurately recognizing the purpose of a noun metaphor, and is characterized in that a to-be-processed text is input into a trained preprocessing model, and the preprocessing model outputs first feature representation; constructing a semantic graph of the to-be-processed text according to the syntactic dependency relationship and the point mutual information; inputting the first feature representation and the semantic graph into the trained graph convolutional network, wherein the graph convolutional network outputs a second feature representation; the second feature representation is classified through a classifier to obtain a noun metaphor recognition result in the to-be-processed text, the metaphor recognition accuracy is remarkably improved, and the method has wide application potential.
Owner:DALIAN UNIV OF TECH

Generalized shared energy storage optimization configuration method and system based on fuzzy chance-constrained programming

The application discloses a generalized shared energy storage optimization configuration method and system based on fuzzy chance constrained programming, relates to the technical field of electric power, considers the operation characteristics of various generalized energy storage resources, and respectively models the energy storage, wherein the base station energy storage model needs to consider communication load communication quality and base station power supply reliability, the air conditioner model needs to consider user comfort, and the electric vehicle charging station model needs to consider user driving characteristics, so that the existing large number of idle multi-energy generalized energy storage resources are fully tapped, and the generalized shared energy storage optimization configuration model considering multiple uncertainties is designed. The shared energy storage operator and the user group form a cooperative alliance by transferring the energy storage use right, the generalized shared energy storage optimization configuration model is decomposed into two sub-problems of alliance energy consumption cost minimization and internal payment negotiation based on Nash bargaining theory, and the risk brought by the parameter uncertainty of the user group source and load output and virtual energy storage is quantified based on the fuzzy chance constrained programming theory.
Owner:SOUTHEAST UNIV

Fault diagnosis method and device and model prototype acquisition method

The disclosure provides a fault diagnosis method and device and a prototype acquisition method in a model, and relates to the technical field of fault diagnosis. The method comprises the following steps: acquiring business data; performing first processing on the business data to obtain first feature data and second feature data corresponding to each first index and a plurality of time windows; inputting the first feature data into a first group of network layers of a Gaussian prototype network model to obtain third feature data; inputting the second feature data into a second group of network layers of the Gaussian prototype network model to obtain fourth feature data; splicing the third feature data and the fourth feature data to obtain fifth feature data; inputting the fifth feature data into a third group of network layers of the Gaussian prototype network model to obtain sixth feature data; and performing fault diagnosis according to the sixth feature data and a prototype of the Gaussian prototype network model.
Owner:CHINA TELECOM CORP LTD

Depression detection method based on EEG channel selection and multi-dimensional feature fusion

The invention discloses a depression detection method based on EEG channel selection and multi-dimensional feature fusion, which avoids the problem of sensitivity of k-means to the clustering number and initial clustering centers, improves the k-means, determines the number of clustering centers by adopting a Karlinski-Halabass criterion, calculates the PageRank value of an EEG channel based on maximum and minimum similarity, and finally determines the number of the clustering centers by adopting the Karlinski-Halabass criterion and the PageRank value of the EEG channel based on the maximum and minimum similarity. Selecting the first k channels as initial clustering centers, designing a self-adaptive threshold model, and selecting channels with distances smaller than a threshold as key EEG channels; constructing a brain function network and a super-brain function network by using the key EEG channel, and extracting low-dimensional time domain features of the key EEG channel, low-dimensional spatial domain features of the brain function network and high-dimensional spatial domain features of the super-brain function network; and designing a multi-dimensional feature fusion strategy based on standard deviation, and fusing low-dimensional time domain features, low-dimensional spatial domain features and high-dimensional spatial domain features to realize depression detection with high accuracy.
Owner:LANZHOU JIAOTONG UNIV

Lightweight multi-modal early gastric cancer collaborative auxiliary diagnosis system for edge devices

PendingCN122599014AMake up for the shortcomings of insufficient representationfully excavated
The application provides an edge device-oriented lightweight multi-modal early gastric cancer collaborative auxiliary diagnosis system, which comprises a lightweight multi-modal classification module, a decision-level fusion unit, a first feature extraction network and a second feature extraction network; the decision-level fusion unit is used for evidence theory fusion of first classification probability and second classification probability, and outputs a multi-modal classification result; a lightweight segmentation module is constructed based on an encoding-decoding structure, an encoder of the lightweight segmentation module comprises a plurality of stacked lightweight bottleneck modules, a feature enhancement module is arranged in a skip connection of the encoder, and the feature enhancement module is used for pixel-level lesion segmentation of a white light endoscopy image; a gating cooperation unit is connected with the lightweight multi-modal classification module and the lightweight segmentation module respectively, and is used for generating a gating signal according to the multi-modal classification result; when the multi-modal classification result is positive, the lightweight segmentation module is activated to perform a segmentation task; and when the multi-modal classification result is negative, a subsequent segmentation process is terminated.
Owner:FUJIAN PROVINCIAL HOSPITAL +1

Artificial intelligence-based operating room active data collection platform

The application discloses an operating room active data collection platform based on artificial intelligence, which comprises the following steps: capturing multi-class visual information through multiple cameras and an operating field camera, identifying instruments, anatomical structures and lesion areas through a deep learning model, tracking surgical steps and personnel information and evaluating collaboration efficiency, fusing video, audio and equipment data streams to construct a space-time graph, forming a structured time axis through pattern recognition, constructing a multi-dimensional knowledge graph based on massive data, realizing data deep correlation and semantic understanding, breaking through the barriers of different equipment data formats through a multi-protocol compatible interface and format adaptation technology, solving the information island problem, replacing the traditional identification mode which relies on expert experience, improving the comprehensiveness, accuracy and efficiency of surgical data processing, and providing strong support for medical quality optimization, surgical teaching and medical research.
Owner:SHANGHAI INSTALLATION ENGINEERING GROUP CO LTD

Data processing method and device based on TPA-LSTM

PendingCN121980160AEffectively retain timing informationPreserve timing informationBiological modelsData setEngineering
The invention discloses a TPA-LSTM-based data processing method and device, and relates to the technical field of data processing, and the method comprises the steps: collecting a historical data set and an actual data set of energy-consuming equipment in an industrial park, and carrying out the convolution of the historical data set and the actual data set, and obtaining a convolution data set; performing dimension matching on the historical data set, the actual data set and the convolution data set based on a preset hybrid convolution completion method to obtain a historical data sequence and an actual data sequence; training the historical data sequence and the actual data sequence based on a preset TPA model to obtain fusion data, and optimizing the fusion data based on a preset LSTM model to generate a prediction data sequence; and acquiring an actual data value corresponding to the sampling time point of the prediction data sequence, determining the accuracy of the prediction data sequence based on the actual data value, smoothing the prediction data sequence based on the accuracy, obtaining target data, and completing data processing.
Owner:CHINA SOUTHERN POWER GRID COMPANY

Method for performing visual question and answer by utilizing attention mechanism from word to region

The invention belongs to the field of artificial intelligence networks, and particularly relates to a method for performing visual questions and answers by using an attention mechanism from words to regions. Comprising the following steps: (1) extracting features; and (2) generating candidate answers: firstly positioning related image areas and keywords in questions by adopting a collaborative attention mechanism, then obtaining fine-grained image features and question features, and finally fusing the two features to generate the candidate answers. According to the method, in order to generate candidate answers with higher quality, two question and answer stages are cascaded, a traditional single-stage visual model is expanded into a double-stage model, semantic information contained in the answers is fully mined, and accurate prediction of the final answers is promoted. According to the invention, image areas and keywords related to questions can be extracted and utilized, so that more accurate candidate answers can be generated.
Owner:石帅

Dissolved oxygen prediction method based on data decomposition and related equipment

The invention relates to the technical field of dissolved oxygen prediction, and provides a dissolved oxygen prediction method based on data decomposition and related equipment, and the method comprises the steps: obtaining a plurality of water quality indexes of a target water body, and determining a plurality of target water quality indexes from all the water quality indexes; according to all the target water quality indexes, generating a dissolved oxygen data sequence of the target water body, and decomposing the dissolved oxygen data sequence to obtain a trend component and a seasonal component; predicting the trend component by using a trend prediction model to obtain a first dissolved oxygen predicted value, and predicting the seasonal component by using a seasonal prediction model to obtain a second dissolved oxygen predicted value; and fusing the first dissolved oxygen predicted value and the second dissolved oxygen predicted value to obtain a final dissolved oxygen predicted value of the target water body. According to the method, the dissolved oxygen prediction accuracy can be improved.
Owner:CENT SOUTH UNIV

A low-gas mine gas emission anomaly source precision detection and treatment method

The application discloses a low-gas mine gas emission abnormal source precision detection and treatment method, which is used for solving the problem of low-gas mine gas abnormal emission. First, the monitoring points and the monitoring point positions are determined, and all gas monitoring data are obtained through a mine monitoring system; data analysis is carried out based on SPC control chart theory, and a gas emission data anomaly criterion is established; the gas emission state is judged through the SPC control chart method, the gas emission abnormal area position is determined, and early warning is carried out; according to the determined gas emission abnormal area, the isotopic analysis method is used to detect the gas emission source and composition; finally, the gas emission abnormal source analysis result is tracked, targeted gas source classification treatment measures are formulated, and then the treatment effect test is carried out. The application can effectively control the low-gas mine gas emission abnormal risk, thereby improving the safety of coal mining.
Owner:XISHAN COAL ELECTRICITY GRP +1

Human posture estimation and non-contact vital sign monitoring method and system based on CSI

PendingCN122581730Afully excavatedAvoid the Risk of Privacy Leakage
The application relates to the technical field of wireless sensing, and discloses a human posture estimation and non-contact vital sign monitoring method and system based on CSI. WiFi channel state information (CSI) is collected, and dynamic CSI feature vectors are obtained through preprocessing. Features are mapped to human key point feature space through Transformer cross attention, spatial reasoning is performed through graph convolutional neural network fusion of human skeleton topology constraints, and human posture estimation results are output. Respiratory rate and heart rate are extracted based on multi-band frequency domain analysis, and vital sign monitoring results are output after being optimized in combination with posture information. Without cameras and wearable devices, non-contact human perception that is privacy-safe and wall-penetrating can be realized, and the method has the advantages of high precision, strong generalization and low-cost deployment, and is suitable for smart home, medical monitoring, emergency rescue and other scenes.
Owner:SHANGHAI RUIYAN TECH CO LTD

Medical image segmentation method based on multi-modal self-supervision

The application is a medical image segmentation method based on multi-modal self-supervision. First, the multi-modal medical image of the lesion tissue is obtained, including A-mode image and B-mode image, and the image is preprocessed. Then, a cycle-consistent modal contrast domain translation network is constructed, including two generators and two discriminators. The generator is used to convert the image of one mode into the image of another mode, including an encoder, an intermediate shared module and a decoder. The discriminator is used to judge the source of the input. Then, the cycle-consistent modal contrast domain translation network is pre-trained, the training loss is calculated, and the loss function includes multi-modal semantic consistency loss, adversarial loss, cross-domain translation loss and cycle consistency loss. Finally, the A-mode segmentation network and the B-mode segmentation network are constructed, the pre-trained weights are migrated to the two segmentation networks, and the trained two segmentation networks are respectively used for medical image segmentation of the corresponding mode. The contrast cross-domain translation is used as a multi-modal self-supervised pre-training task to learn more comprehensive modal features, promote the network to better learn modal characteristics and common knowledge, and improve the segmentation ability.
Owner:HEBEI UNIV OF TECH

A GNSS / INS combined positioning method based on common frequency signal difference between systems

ActiveCN114488245Bprecise positioningincrease hardware costSatellite radio beaconing
The present invention relates to a GNSS / INS combined positioning method based on the difference of common frequency signals between systems. The invention combines the development trend of compatibility and interoperability of GNSS technology, utilizes the common frequency signals between different satellite systems, and proposes a new GNSS / INS combined positioning method based on the excellent stability of differential inter-system biases (DISB) between the same frequencies of different systems in the time domain. Firstly, the prior information of DISB parameters is obtained through ultra-short baseline static experiments; using the prior DISB information, GNSS / INS combined positioning is realized based on the GNSS tight combination RTK based on the difference of common frequency signals between systems. Compared with the traditional GNSS / INS combined positioning algorithm, this method can fully mine the information of multi-system GNSS and significantly increase the amount of available information, thereby effectively improving the positioning performance of the GNSS / INS combined system in complex environments.
Owner:TONGJI UNIV

Geological disaster identification method and system based on multi-modal semi-supervised learning

PendingCN122598034AAchieve deep interactionEffectively filter out interference
This invention discloses a method and system for geological hazard identification based on multimodal semi-supervised learning. The method includes the following steps: acquiring labeled and unlabeled orthophotos and elevation models of geological hazard areas; constructing teacher and student networks containing dual-branch encoders, extracting features from the orthophotos and elevation models respectively, and linearly fusing them, generating ensemble predictions using learnable dynamic weights; in semi-supervised training, calculating the uncertainty of the student network's prediction results in real time, and triggering an exponential moving average update of the teacher network using the student network parameters only when the decrease in uncertainty compared to the historical mean exceeds a preset evolution threshold; optimizing the student network parameters by combining supervised loss, confidence-weighted consistency loss, and student historical consistency loss; inputting the test data into the trained student network, and outputting fine-grained geological hazard segmentation results. This invention can achieve high-precision automatic identification of geological hazards under small sample conditions.
Owner:FUJIAN AGRI & FORESTRY UNIV

A method, apparatus, electronic device and storage medium for entity classification

This disclosure provides an entity classification method, apparatus, electronic device, and storage medium. The method includes: acquiring multiple entity relationship networks corresponding to multiple entity nodes; the same entity node corresponding to different entity relationships in different entity relationship networks; performing multi-label prediction on the multiple entity relationship networks based on multiple trained base learners to obtain the multi-label prediction result of each entity node in each entity relationship network; and determining the final multi-label prediction result corresponding to each entity node based on the multi-label prediction result of each entity node in each entity relationship network. This disclosure, from the perspective of multi-view learning, performs multi-label prediction based on multiple entity relationship networks, which can more fully explore the relationships between entities, making the multi-label prediction results for entity nodes more accurate.
Owner:CHINA UNIONPAY

A traffic situation analysis system based on holographic intersections

ActiveCN121281277BDetailed modeling capabilitiesStrong data analysis skillsDetection of traffic movement
This invention belongs to the field of intelligent transportation technology, specifically relating to a traffic situation analysis system based on holographic intersections. It includes edge devices, a data access module, an intersection modeling unit, a data analysis module, a data storage module, and an anomaly backtracking module. The edge devices collect cross-sectional flow, speed, queue length, vehicle trajectory, and traffic signal control data; the data access module receives this information. The intersection modeling unit constructs a detailed 3D digital model including lanes, stop lines, zebra crossings, and other elements. The data analysis module calculates multiple situation indicators such as intersection overflow degree, traffic imbalance index, and congestion degree based on traffic data and the model. The data storage module stores traffic data, the model, and records of anomalies exceeding thresholds. The anomaly backtracking module can trace back to the state before the anomaly occurred based on the anomaly records, supporting the retrieval of monitoring videos, trajectory data, and the situation results at the corresponding time, assisting in the analysis of the causes of the anomalies.
Owner:SICHUAN TIANFU NEW DISTRICT BEIJING INST OF TECH INNOVATION EQUIP RES INST

A monitoring and analysis system for autonomous inspection operations of unmanned aerial vehicles (UAVs)

ActiveCN121330378Bfully excavatedSolve the problem of being unable to fully tap the value of dataImage enhancementImage analysisPoint cloudUncrewed vehicle
This invention discloses an autonomous unmanned aerial vehicle (UAV) inspection operation monitoring and analysis system, belonging to the field of UAV inspection operation analysis technology. The invention processes collected railway track image data, railway catenary thermal imaging data, and 3D point cloud data along the railway line to obtain visual indices, functional indices, and structural indices. The inspection result generation module compares these indices with thresholds and performs corresponding operations, such as marking the priority of defect maintenance or structural maintenance, and pushing relevant data to maintenance personnel. This fully leverages the value of the data, provides guidance for optimizing subsequent inspection work, and solves the problem of existing technologies lacking efficient analysis and processing mechanisms, thus failing to fully exploit the value of the data.
Owner:ZHEJIANG RONGQI TECH CO LTD +1

Grid water depth prediction method and device based on lsh attention mechanism

PendingCN122527832AImprove practicalityBreaking the limitation that the time range of water depth data must be consistent
The embodiment of the application discloses a grid water depth prediction method and device based on an LSH attention mechanism, and relates to the field of hydrological monitoring. The method disclosed by the application first collects B batches of boundary flow time series data and grid water depth time series data of a target basin output by a two-dimensional IFMS model; then, standardizes the collected data, constructs a first feature tensor and transposes the first feature tensor into a second feature tensor; then, a weighted feature tensor is calculated based on an attention algorithm by using a Reformer model; finally, the weighted feature tensor is decoded by using a pre-trained iTransformer to obtain prediction values of grid water depths at future time points. The application can realize cross-time period prediction, improve prediction efficiency and accuracy, and provide a reliable basis for flood control and disaster reduction.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES

Dynamic contrast-enhanced magnetic resonance image classification method, system, device and medium

The application provides a dynamic contrast-enhanced magnetic resonance image classification method, system, device and medium, the method comprising: acquiring breast dynamic contrast-enhanced magnetic resonance images of different disease ages and preprocessing to generate a breast dynamic enhancement magnetic resonance image dataset; according to the breast dynamic enhancement magnetic resonance image dataset, an image classification prediction model comprising a multi-task classification network and a perception discrimination network connected in turn is constructed; the acquired breast dynamic contrast-enhanced magnetic resonance image to be classified is input into the image classification prediction model for multi-task classification, and an image classification result comprising the position, spatial structure and spatial signal of the tumor is obtained. The method can fully and accurately mine the rich multi-dimensional, multi-scale heterogeneous space, time and semantic correlation representation possessed by the breast contrast-enhanced magnetic resonance image data, and can supplement the missing different spatial dimension information, ensuring the reliability and accuracy of image classification prediction.
Owner:GUANGZHOU UNIVERSITY

Photovoltaic output information generation method and device, equipment and storage medium

The embodiment of the invention provides a photovoltaic output information generation method and device, equipment and a storage medium. The method comprises the steps that meteorological factors are screened based on correlation analysis, a comprehensive meteorological factor curve is generated through dimensionality reduction, and a photovoltaic output curve is synchronously generated. Five types of results of cloudy days, cloudy days, sunny days, sunny-to-cloudy days and multi-cloud-to-sunny days are extracted through three-stage clustering, an error distribution estimation model is constructed based on historical data of each scene, a classification historical data set is used for training a Bayesian neural network, an integrated model is constructed, a path is matched according to input data, and an error distribution estimation model is constructed; and inputting the generated comprehensive curve into an integration and error model, and outputting a photovoltaic daily output curve with a confidence interval as final information. Refining input with high reference value is provided for time sequence production simulation, and the refinement degree and the uncertainty quantification capability of output prediction are improved.
Owner:CHINA YANGTZE POWER

Device identification method and apparatus, device, and storage medium

The application discloses a device identification method and device, apparatus and storage medium, and belongs to the technical field of computers. The method comprises: obtaining device feature information of a to-be-identified device; performing feature embedding processing on the device feature information to generate overall feature information of the to-be-identified device; determining cross feature information of the to-be-identified device based on the overall feature information; and determining that the to-be-identified device is an Internet service device in the case that the overall feature information and the cross feature information meet a target condition. In the technical scheme of the application, high-dimensional discrete device features are embedded into low-dimensional dense overall features, the device features are more efficiently represented and the amount of calculation is reduced under the premise of ensuring the completeness of the feature information, then the cross features between the features in the overall features are determined, the feature information is fully mined, and then the type of the to-be-identified device is determined according to the overall features and the cross features, so that the efficiency of identifying the Internet service device is improved, and the identification accuracy is also improved.
Owner:TENCENT TECHNOLOGY (SHENZHEN) CO LTD

Bluetooth AOA signal outlier elimination method and system based on deep learning

The invention relates to a Bluetooth AOA signal outlier elimination method and system based on deep learning, and the method comprises the steps: initializing system configuration, and cooperatively collecting Bluetooth signals through employing a plurality of Bluetooth base stations; acquiring IQ data in a plurality of Bluetooth base stations, and performing data preprocessing; according to the IQ data, performing calculation to obtain a preliminary positioning result of the Bluetooth terminal; constructing an input data set of the deep learning model and designing a network structure of the deep learning model; training a deep learning model according to the input data set; the training precision of the deep learning model is judged, if the training precision meets the requirement, IQ data collected in real time is input into the trained deep learning model, and a real-time positioning result of the Bluetooth terminal is obtained; otherwise, returning to adjust the network structure; and optimizing the real-time positioning result by using a Kalman filtering algorithm to obtain a final positioning result. Compared with the prior art, the method has the advantages of high positioning accuracy and strong robustness.
Owner:SHANGZHILIAN (SHANGHAI) INTELLIGENT TECH CO LTD

Tumor intelligent auxiliary diagnosis system and method based on deep learning, medium, terminal and program product

The invention provides an intelligent tumor auxiliary diagnosis system and method based on deep learning, a medium, a terminal and a program product. The method comprises the steps that pathological section images and multiple single-mode radiology images of tumor tissue are acquired and preprocessed; constructing a pathological encoder for outputting pathological features according to the pathological section image; training according to various single-mode radiology images to obtain a single-mode diagnosis model, and taking the output pathological features as semantic reference in the training process; according to multiple single-mode radiology images, performing fusion and training to obtain a multi-mode diagnosis model, and performing shielding mode input based on a random mode shielding strategy in the training process; and deploying the single-mode diagnosis model and the multi-mode diagnosis model to output a tumor diagnosis result. According to the method, the single-mode image can be independently processed, and the multi-mode image features can be fused, so that complementary information among different modes can be fully mined, and the accuracy of noninvasive tumor diagnosis and the clinical diagnosis efficiency are improved.
Owner:SHANGHAI TECH UNIV