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33 results about "Regression tree model" patented technology

Satellite precipitation two-stage error correction method based on actual measurement site

PendingCN121208982ABiological modelsKnowledge based modelsHydrometrySatellite precipitation
The invention discloses a satellite precipitation two-stage error correction method based on an actual measurement site, and the method comprises the steps: extracting drainage basin DEM data, obtaining a mask file of a drainage basin, and extracting the satellite precipitation of the drainage basin; performing inverse distance weighted interpolation on the rainfall data of the actual measurement site to a corresponding resolution to obtain grid data of the actual measurement site; error correction data are obtained through a deep learning model or dynamic quantile mapping; calculating a residual error between the rainfall data after error correction and grid rainfall of the actual measurement site, and learning a nonlinear relationship between the rainfall data and the residual error by using a gradient lifting regression tree model; and adding the precipitation residual error of the nonlinear residual error correction model to the error-corrected satellite precipitation error to obtain a residual error-corrected precipitation product. According to the method, the satellite precipitation product is corrected based on the actual measurement site data, the high-precision precipitation product is obtained, point-to-surface conversion of the precipitation data can be realized, and data support is provided for input of a refined hydrological model.
Owner:HOHAI UNIV

Power intraday price prediction method based on dynamic holiday weight and multi-source fusion

ActiveCN121480797AMarket predictionsForecastingElectricity priceRegression tree model
The invention discloses an electric power intra-day price prediction method based on dynamic holiday weight and multi-source fusion, and the method comprises the steps: obtaining multi-source historical data, and carrying out the time synchronization processing; holiday and festival time information is acquired, and a dynamic weight is generated based on the influence of holidays and festivals and upstream and downstream dates on the power load and the electricity price; constructing a multi-dimensional predictive factor matrix based on the multi-source historical data after time synchronization processing; and according to the multi-dimensional predictive factor matrix, on the basis of a collaborative optimization multi-model combination comprising a feedforward neural network model and a bagged regression tree model, intra-day joint prediction is executed, the intra-day joint prediction refers to a process of predicting the power load and the electricity price hourly, and an hourly prediction result of the power load and the electricity price is output. A dynamic holiday weight mechanism is introduced, a multi-source fused high-dimensional predictive factor matrix is constructed, and a multi-model combined predictive strategy of collaborative optimization of a feedforward neural network and a bagged regression tree is adopted, so that the precision and stability of intra-day electricity price and load prediction of the electricity market are improved.
Owner:STATE GRID SHANDONG ELECTRIC POWER CO +2

Central air conditioning system host water outlet temperature and cold and hot water pump frequency coupling operation method

The application discloses a kind of central air conditioning system outlet water temperature and cold hot water pump frequency coupling operation method, including S1, collection basic data;S2, based on the basic data collected analysis central air conditioning cold and heat load influencing factor;S3, based on the cold and heat load influencing factor analyzed, constructs decision regression tree model;S4, according to the decision regression tree model constructed, central air conditioning system is carried out cooling and heating condition division;S5, according to the condition category divided to central air conditioning operation data is screened, determines the optimal host outlet water temperature and cold hot water pump frequency under each condition category as corresponding condition optimal setting parameter, realizes coupling operation.(1) the operation control method provided by the application simultaneously to host outlet water temperature and cold hot water pump frequency optimization, improve the energy-saving potential of central air conditioning system;The method of the application starts from actual engineering data, optimizes water temperature and water pump frequency while ensuring indoor comfort requirements, ensure the feasibility of the method.
Owner:SICHUAN INSITITUTE OF BUILDING RES

A Spark task intelligent orchestration method based on gradient boosting regression trees

This application discloses an intelligent orchestration method for Spark tasks based on gradient boosting regression trees, relating to the field of resource scheduling technology. The method includes: acquiring multiple Spark tasks and generating multiple task orchestration schemes; for any given task orchestration scheme, inputting the number of executors for each Spark task into a preset gradient boosting regression tree model, and outputting the predicted runtime of each Spark task; determining the fitness score of each task orchestration scheme based on the number of executors, startup time, and predicted runtime of each Spark task in each orchestration scheme; adjusting each task orchestration scheme and iteratively executing the prediction and scoring steps until a stopping condition is met; and determining the task orchestration scheme with the lowest fitness score as the target orchestration scheme for each Spark task. This application combines the prediction and evaluation stages to achieve a closed-loop decision-making process, improving the overall utilization of cluster resources.
Owner:深圳市名通科技股份有限公司

Method and system for optimizing heat transfer structure of stepped air duct of rotary kiln for extracting lithium from lithium ore

The invention discloses a lithium ore lithium extraction rotary kiln stepped air duct heat transfer structure optimization method and system, and relates to the technical field of intelligent control. Multi-source sensing data in a rotary kiln stepped air duct are collected in real time, geometric parameters of the stepped air duct are combined, and coupling characteristics are extracted from the multi-source sensing data by using a principal component analysis method; constructing a dynamic heat transfer resistance coefficient matrix on the basis of the coupling characteristics and the multi-source sensing data, inputting the coupling characteristics and the dynamic heat transfer resistance coefficient matrix into a pre-trained gradient lifting regression tree model, outputting a real-time effective heat transfer area proportion of each air duct layer, and calculating the real-time effective heat transfer area proportion of each air duct layer on the basis of the real-time effective heat transfer area proportion. Step air duct parameters are optimized by adopting a self-adaptive particle swarm algorithm, and the optimized step air duct parameters are used for adjusting the step air duct parameters in the rotary kiln in real time through a PID (Proportion Integration Differentiation) controller to form closed-loop control; and the heat transfer efficiency in the calcining process can be greatly improved.
Owner:NANTONG INST OF TECH +1

Unmanned aerial vehicle camera lens production and manufacturing online monitoring analysis management method

The invention discloses an unmanned aerial vehicle camera lens production and manufacturing online monitoring analysis management method, and relates to the technical field of unmanned aerial vehicles. The method comprises the following steps: combining Pearson correlation and characteristic mutual information between unmanned aerial vehicle lens characteristic data and unmanned aerial vehicle lens production environment data to obtain an environment quality importance index, and screening the unmanned aerial vehicle lens production environment data to obtain unmanned aerial vehicle lens production environment screening data; constructing a multivariable regression tree model; obtaining a lens evaluation index in combination with the unmanned aerial vehicle lens feature data and a feature weight obtained by an analytic hierarchy process, and classifying the unmanned aerial vehicle lens feature data through a kernel density estimation method to obtain an unmanned aerial vehicle lens label; inputting the corresponding unmanned aerial vehicle lens production environment screening data into the multivariable regression tree model when the unmanned aerial vehicle lens label needs to be rechecked, and obtaining a prediction error result; and combining the error prediction result and the environmental quality importance index to obtain an environmental quality correlation index, and performing traceability early warning.
Owner:JIANGXI HONGXIN OPTICAL TECH CO LTD

TBM rock breaking efficiency intelligent prediction method based on rock size

ActiveCN114202686BEnsemble learningCharacter and pattern recognitionData setRegression tree model
The application discloses a kind of TBM rock breaking efficiency intelligent prediction methods based on rock slag size, which comprises the following steps: install industrial camera on TBM slag belt, and real-time acquisition rock slag image information in TBM tunneling process;The rock slag image information obtained is automatically identified, and the shape and geometric characteristics of the rock slag are obtained;Collect TBM's on-site tunneling parameters, rock slag geometric information characteristics and rock breaking efficiency data, and form sample data set;A gradient boosting regression tree model optimized by particle swarm algorithm is established using the sample data set, and the intelligent prediction of TBM rock breaking efficiency is realized.The application uses particle swarm algorithm to optimize the gradient boosting regression tree model, so as to find the best parameters of the gradient boosting regression tree model, improve the prediction accuracy of the model, and the accurate prediction of rock breaking efficiency can effectively provide reference for TBM tunneling parameter setting and efficient rock breaking.
Owner:CHONGQING COMM CONSTR GRP +2

Indoor air conditioning method and system for tumor patients

PendingCN121677142AMechanical apparatusLighting and heating apparatusMedicineRegression tree model
The invention provides an indoor air conditioning method and system for tumor patients. The indoor air conditioning method comprises the steps that environment parameter values in a room and physiological parameter values of at least one tumor patient in the room are obtained; based on the environmental parameter values and the physiological parameter values, high-order features are determined, and the high-order features are used for representing the influence relation between the different parameter values; the environment parameter values, the physiological parameter values and the high-order features are input into a regression tree model, target environment parameter values output by the regression tree model are obtained, and the regression tree model is obtained through training based on sample environment parameter values in a plurality of sample rooms and sample physiological parameter values of a plurality of sample tumor patients in the sample rooms; the sample environment parameter value is a parameter value of which the comfort level of the sample tumor patient is greater than a preset comfort level; and based on the target environment parameter value, air in the room is adjusted. The air in the room where the tumor patient is located can be adjusted in a targeted and personalized mode.
Owner:CHINA POST DIGITAL INTELLIGENCE (XIAN) TECHNOLOGY CO LTD +2

Grassland degradation ecological risk assessment method based on multi-agent model

This invention relates to the field of ecological environment assessment and spatial simulation technology, and discloses a method for grassland degradation ecological risk assessment based on a multi-agent model. The method includes a spatial risk assessment module that acquires multi-source basic data and divides it into discrete grid cells, calculating a landscape ecological risk index to generate spatial distribution results; a driving mechanism identification module that extracts driving factors to construct an improved regression tree model and outputs nonlinear response rules; and a multi-agent dynamic simulation module that constructs grassland environmental entities based on grid cells, injects risk indices and response rules, generates herder behavior entities, and inputs management policy parameters. Iterative calculations are performed using these two types of entities to simulate the dynamic process of herder relocation and resource consumption. After the iteration reaches the target year, the grid landscape attributes are reclassified according to the remaining grass cover, and the data is re-input into the assessment module for aggregation calculations, outputting a spatial distribution map to complete the evolution assessment. This invention can intuitively test the intervention effect of management policies on grassland degradation.
Owner:GANSU AGRI UNIV

Noninvasive cardiac expulsion measuring method and system

The invention provides a non-invasive cardiac expulsion measuring method and system. The method comprises the following steps: inputting preprocessed arterial pressure waveform signals and basic vital sign data into a parameter estimation neural network for feature extraction, and outputting a correction factor cal, a scale factor SF and a waveform correction coefficient; respectively inputting the correction factor cal, the scale factor SF and the waveform correction coefficient into a pulse contour model, a LiDCO power model and a FloTrac standard deviation model for calculation to obtain a cardiac output estimated value CO1, a cardiac output estimated value CO2 and a cardiac output estimated value CO3; and fusing the cardiac output estimated value CO1, the cardiac output estimated value CO2 and the cardiac output estimated value CO3 by adopting a gradient lifting regression tree model, and outputting a final cardiac output value. According to the invention, calibration-free continuous monitoring is realized, and the stability and precision of cardiac output estimation are improved.
Owner:SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI

A rule extraction method and device of a network security anomaly detection model

ActiveCN119089987BRegression tree modelEngineering
The application relates to the technical field of anomaly detection, in particular to a rule extraction method and device of a network security anomaly detection model, electronic equipment and a storage medium, wherein the method comprises the following steps: based on a root regression tree generation method, using an anomaly probability value output by an original model as a label to train a regression tree model, and generating a root regression tree; performing positioning processing on the root regression tree to obtain a low-confidence area; performing data augmentation processing on the low-confidence area to obtain augmented data; generating a root regression tree subtree based on the augmented data, performing merging processing on the root regression tree and the root regression tree subtree to obtain a merged tree; and performing rule extraction processing on the merged tree to obtain a complete rule set. The method is independent of a specific anomaly detection learning mechanism and is suitable for various anomaly detection models; the extracted rules can effectively assist security experts in model verification, knowledge discovery and decision support, and the transparency and trustworthiness of the anomaly detection system are improved.
Owner:TSINGHUA UNIVERSITY

Method and apparatus for predicting global telecommunication traffic demand

The application provides a global telecommunication service communication demand prediction method and device, the method comprises the following steps: acquiring first spliced grid data of each local area in the world, global aviation data and global maritime data; inputting the first spliced grid data of each local area into a global prediction model, outputting a telecommunication service communication demand prediction result of each local area by the global prediction model, so as to obtain a global ground telecommunication service communication demand prediction result, the global prediction model comprises a geographical weighted regression tree model; estimating a global aviation telecommunication service communication demand prediction result based on the global aviation data, estimating a global maritime telecommunication service communication demand prediction result based on the global maritime data; obtaining a global telecommunication service communication demand prediction result based on the global ground telecommunication service communication demand prediction result, the global aviation telecommunication service communication demand prediction result and the global maritime telecommunication service communication demand prediction result.
Owner:BEIJING UNIV OF POSTS & TELECOMM

Power transaction decision-making method and system

The invention discloses a power transaction decision-making method and system, and the method comprises the steps: dividing market information issued by a power transaction center through employing a similarity calculation method, obtaining transaction attribute data, and carrying out the processing of the transaction attribute data through employing a classification and regression tree model, and obtaining a feature set; processing the feature set by using a Shapley value to obtain a plurality of target features; and inputting the plurality of target features into a constructed statistical arbitrage model to obtain a transaction decision, the construction process of the statistical arbitrage model comprising performing correlation analysis on a transaction target, a market transaction demand and a power grid technology by using a multi-factor model, and adjusting parameters of the statistical arbitrage model to realize optimization of the transaction decision. According to the power transaction decision-making method provided by the embodiment of the invention, the defect that transaction decision-making depends on artificial experience at present is overcome, the power transaction decision-making speed is improved, and the intelligent process of power transaction decision-making is promoted.
Owner:STATE GRID ZHEJIANG ELECTRIC VEHICLE SERVICE CO LTD

Immunoassay automation equipment parameter optimization method based on gradient lifting regression tree model

The invention relates to an immunoassay automation equipment parameter optimization method based on a gradient boosting regression tree model, and solves the technical problems of how to optimize an inter-plate CV value, an in-plate CV value and a% RE absolute value in a detection process of existing electrochemical luminescence immunoassay equipment and how to improve parameter suitability. According to the method, sample incubation time T, cleaning times N, magnetic bead adsorption time t1 and magnetic bead beating time t2 are predicted through a constructed gradient lifting regression tree model, and equipment executes detection work according to prediction results so as to obtain optimized CV values, S / N and% RE of each hole.
Owner:SUZHOU KANGWEIXUN BIOTECHNOLOGY CO LTD

A method for visualizing energy load forecasts

The application belongs to the field of energy and particularly relates to a visual method for energy load prediction, which comprises the following steps: forming an energy load prediction model based on a classification and regression tree model and gradient boosting; inputting energy load historical data parameters and real-time parameters to form the energy load prediction model based on the classification and regression tree model and gradient boosting; and visually processing a prediction path and a prediction result of the energy load prediction model based on the classification and regression tree model and gradient boosting; the application can visually display the process of energy load prediction.
Owner:SHANGHAI NORMAL UNIVERSITY

Soil remediation parameter prediction method, device and equipment based on multi-modal data

The invention relates to the field of machine learning and the field of soil remediation, and discloses a soil remediation parameter prediction method, device and equipment based on multi-modal data, and the method comprises the steps: determining a trained gradient boosting regression tree model, a trained extreme gradient boosting model and a trained random forest model; when the first test result, the second test result and the third test result meet predefined conditions, deploying a trained gradient boosting regression tree model, a trained extreme gradient boosting model and a trained random forest model; obtaining current features through the multi-modal data of the current biochar and the pollution environment parameters of the current soil, and obtaining predicted soil remediation parameters based on the trained gradient boosting regression tree model, the trained extreme gradient boosting model, the trained random forest model and the current features. The method is beneficial for improving the obtaining efficiency of the predicted soil remediation parameters.
Owner:XIANGJIANG LAB

Oil gas recovery control system method and device, storage medium and equipment

PendingCN122071356AMeet prediction accuracy requirementsReduce energy savingLiquid transferring devicesFeature vectorData set
The invention provides an oil and gas recovery control method and device, a storage medium and equipment. The method comprises the steps that working data in the oil and gas recovery process are collected and stored, abnormal value detection and correction are conducted, and a corrected data set is stored; performing normalization processing on the corrected data; performing feature vectorization and tagging processing on the normalized correction data, and dividing a correction data set into a training set and a test set according to feature vectors and tags obtained by processing; establishing an original CART model by using the training set, adjusting by using the test set, and establishing a CART regression tree model; and determining the pumping capacity of the vacuum pump, and controlling the oil and gas recovery system in combination with the established CART regression tree model. According to the method, data collected and stored in the oil and gas recovery process are preprocessed to form feature vectors and labels, the regression model is trained, the trained regression model is predicted, related parameters are adjusted to meet the prediction accuracy requirement, and accurate control over the oil and gas recovery system is achieved.
Owner:CHINA NAT PETROLEUM CORP +1

Core adding and code adding method and system based on warehouse management equipment

The invention discloses a core adding and code adding method and system based on warehouse management equipment. The method comprises the following steps: S1, collecting equipment basic information; s2, calling a built-in rule engine to load and preset, generating a complete equipment number and outputting a two-dimensional code image; s3, decoding the equipment number information in the two-dimensional code image, and executing structured verification; s4, constructing a multi-level interaction architecture, wherein the multi-level interaction architecture comprises a business logic layer, an interaction middle layer and a data storage and interface layer; s5, when the equipment numbering module completes number generation, two-dimensional code generation and RFID writing are triggered; s6, reading equipment RFID tag data in batches through an integrated UHF RFID module, and predicting multi-point RSSI data acquired in real time based on a regional gradient lifting regression tree model; and S7, when the checking module completes the checking operation, carrying out data synchronization updating and recording an operation state. According to the invention, high-efficiency, accurate and intelligent management of warehouse equipment is realized.
Owner:ANHUI DAKUAI INTELLIGENT TECH CO LTD

Power intraday price forecasting method based on dynamic holiday weight and multi-source fusion

ActiveCN121480797BMarket predictionsForecastingElectricity priceRegression tree model
The application discloses a power intraday price prediction method based on dynamic holiday weight and multi-source fusion, comprising: acquiring multi-source historical data and performing time synchronization processing; acquiring holiday time information, generating dynamic weight based on the influence of holidays and upstream and downstream dates on power load and electricity price; constructing a multi-dimensional prediction factor matrix based on the multi-source historical data after time synchronization processing; performing intraday joint prediction based on the multi-dimensional prediction factor matrix according to a collaborative optimization multi-model combination including a feedforward neural network model and a bagged regression tree model, wherein the intraday joint prediction refers to the process of predicting power load and electricity price by hour, and outputting the hourly prediction results of power load and electricity price. By introducing a dynamic holiday weight mechanism, constructing a multi-source fusion high-dimensional prediction factor matrix, and adopting a multi-model combination prediction strategy of collaborative optimization of a feedforward neural network and a bagged regression tree, the accuracy and stability of the power market intraday electricity price and load prediction are improved.
Owner:STATE GRID SHANDONG ELECTRIC POWER CO +2

Method and system for predicting underwater explosion response of grillage structure based on parametric modeling

PendingCN121562046AGeometric CADEnsemble learningUnderwater explosionData set
The invention provides a grillage structure underwater explosion response prediction method and system based on parametric modeling, and relates to the technical field of ship and ocean engineering structure safety assessment, and the method comprises the steps: constructing a test parameter set; inputting the test parameters into finite element simulation software in batches to obtain a response data set, wherein the response data set comprises multiple groups of response data; constructing each group of response data and the corresponding test parameters into a group of training data to obtain a training data set; training the random forest model through test parameters and rupture labels in the training data set to obtain a rupture prediction model; and training the gradient lifting regression tree model through test parameters, the maximum equivalent stress value, the maximum equivalent plastic strain value, the maximum deformation displacement value and the crevasse area in the training data set to obtain a physical response prediction model. The response prediction speed can be greatly increased through parametric modeling and model prediction, and the trained prediction model does not depend on a grid structure and has very high generalization ability.
Owner:WUHAN UNIV OF TECH

Water surface atmospheric environment monitoring and tracing system based on multi-source data fusion

PendingCN121524928AKnowledge based modelsRegression tree modelMulti source data
The invention relates to the technical field of atmospheric environment monitoring, in particular to a water surface atmospheric environment monitoring and tracing system based on multi-source data fusion. According to the system, a monitoring layer adopts a dynamic sampling frequency adaptive algorithm to realize multi-source data synchronous acquisition, and the data precision of a high-pollution area is improved; the data transmission and fusion layer solves the problems of time-space dislocation and standardization of multi-source data through a time attention mechanism and an inverse distance weighting algorithm; the analysis layer improves a forward matrix decomposition model, realizes automatic pollution source identification by introducing a Bayesian optimization factor number and combining with random forest classification, and quantifies secondary pollution contribution by matching with a gradient lifting regression tree model; and the application layer realizes pollution source quantitative traceability and high-value area positioning through a geographically weighted regression model and hotspot analysis, and outputs visual products and prevention and control suggestions. The system effectively solves the problems of low water surface atmosphere monitoring data quality and insufficient traceability precision, and provides technical support for cross-regional joint defense and joint control of the Yangtze river basin.
Owner:JIANGSU ENVIRONMENTAL MONITORING CENT

Method and device for predicting communication demand of global telecommunication service

The invention provides a global telecommunications service communication demand prediction method and device. The method comprises the following steps: acquiring first spliced raster data, global aviation data and global maritime data of each local area in the world; inputting the first spliced raster data of each local area into a global prediction model, outputting a telecommunication service communication demand prediction result of each local area by the global prediction model to obtain a global ground telecommunication service communication demand prediction result, the global prediction model comprising a geographically weighted regression tree model; estimating and obtaining a global aviation telecommunication service communication demand prediction result based on the global aviation data, and estimating and obtaining a global maritime telecommunication service communication demand prediction result based on the global maritime data; and obtaining a global telecommunications service communication demand prediction result based on the global ground telecommunications service communication demand prediction result, the global aviation telecommunications service communication demand prediction result and the global maritime telecommunications service communication demand prediction result.
Owner:BEIJING UNIV OF POSTS & TELECOMM

Methods, apparatus, and equipment for predicting soil remediation parameters based on multimodal data

This application relates to the fields of machine learning and soil remediation. It discloses a method, apparatus, and device for predicting soil remediation parameters based on multimodal data. The method includes: determining a trained gradient boosting regression tree model, a trained extreme gradient boosting model, and a trained random forest model; deploying the trained gradient boosting regression tree model, the trained extreme gradient boosting model, and the trained random forest model when the first test result, the second test result, and the third test result meet predefined conditions; obtaining current features using current biochar multimodal data and current soil pollution environmental parameters; and obtaining predicted soil remediation parameters based on the trained gradient boosting regression tree model, the trained extreme gradient boosting model, the trained random forest model, and the current features. This application is beneficial for improving the efficiency of obtaining predicted soil remediation parameters.
Owner:XIANGJIANG LAB

Intelligent Spark task arrangement method based on gradient boosting regression tree

ActiveCN121722523AProgram initiation/switchingResource allocationAlgorithmRegression tree model
The invention discloses an intelligent Spark task arrangement method based on a gradient boosting regression tree, and relates to the technical field of resource scheduling, and the method comprises the steps: obtaining a plurality of Spark tasks, and generating a plurality of task arrangement schemes; for any task arrangement scheme, inputting the number of actuators of each Spark task into a preset gradient lifting regression tree model, and outputting the predicted running time of each Spark task; according to the number of actuators, the starting time and the predicted operation duration of each Spark task in each task arrangement scheme, determining a fitness score of each task arrangement scheme; adjusting each task arrangement scheme, and iteratively executing the prediction and scoring steps until a stop condition is met; and determining the task arrangement scheme with the minimum fitness score as a target arrangement scheme of each Spark task. According to the method, the prediction link and the evaluation link are combined, so that a decision closed loop is realized, and the overall utilization rate of cluster resources is improved.
Owner:深圳市名通科技股份有限公司

Evaporation complementary relation parameter determination method based on interpretable machine learning

The invention discloses a method for determining evaporation complementary relation parameters based on interpretable machine learning, and relates to the field of ecological hydrology research, and the method comprises the steps: obtaining the evaporation complementary relation parameters of each drainage basin through the inversion of a water balance equation and an evaporation complementary relation; constructing an enhanced regression tree model according to the evaporation complementary relation parameters and the multiple drainage basin features, and determining key driving factors based on feature importance; by taking the key driving factor as an independent variable and the evaporation complementary relationship parameter as a dependent variable, establishing an evaporation complementary relationship parameter determination model corresponding to different partitions; and determining evaporation complementary relation parameters in a global range. According to the method, the relationship between different drainage basin characteristics and the evaporation complementary relationship parameters is explored, the evaporation complementary theory parameter determination model is established based on the interpretable machine learning method, effective acquisition of the evaporation complementary relationship parameters is realized, and the applicability of the evaporation complementary relationship in the global scale is improved.
Owner:CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION

Lithium ore lithium extraction rotary kiln ladder air duct heat transfer structure optimization method and system

The application discloses a lithium ore lithium extraction rotary kiln ladder air duct heat transfer structure optimization method and system, relates to the intelligent control technical field, through real-time collection of multi-source sensing data in the rotary kiln ladder air duct, combining the geometric parameters of the ladder air duct, using the principal component analysis method to extract the coupling characteristics from the multi-source sensing data, and based on the coupling characteristics and the multi-source sensing data, a dynamic heat transfer resistance coefficient matrix is constructed, the coupling characteristics and the dynamic heat transfer resistance coefficient matrix are input into the pre-trained gradient boosting regression tree model, and the real-time effective heat transfer area proportion of each air duct level is output, based on the real-time effective heat transfer area proportion, the adaptive particle swarm optimization algorithm is used to optimize the ladder air duct parameters, the optimized ladder air duct parameters are used for real-time adjustment of the ladder air duct parameters in the rotary kiln through the PID controller, and a closed loop control is formed; the heat transfer efficiency in the calcination process can be greatly improved.
Owner:NANTONG INST OF TECH +1

Wheat-jade rotation future yield prediction method and system based on process model and machine learning

The invention discloses a wheat-corn rotation future yield prediction method and system based on a process model and machine learning, and belongs to the crossing field of agricultural information technology, crop model and machine learning, and the method comprises the steps: constructing a time-space continuous county-level scale region data set; performing parameter calibration on the process model by using point location data, and simulating wheat and corn yields of a site scale; generating a sample set through a fertilization scene experiment and an extreme climate combination scene experiment, and dividing the sample set into a training set and a verification set; a gradient boosting regression tree model integrated with an attention mechanism is trained and verified, and a DNDC-GBRT-ATT prediction framework is constructed; and inputting the county-level scale region data set into the trained gradient boosting regression tree model, and outputting a county-level scale yield prediction result of the wheat-corn rotation mode under future climate change. According to the method, precise county-level prediction is realized, and reliable technical support is provided for regional agricultural production decision making.
Owner:INSTITUTE OF ENVIRONMENT AND SUSTAINABLE DEVELOPMENT IN AGRICULTURE CAAS

Decision Tree-Based Urban Flooding Meteorological Model and Prediction Method

This invention discloses a decision tree-based meteorological model and prediction method for urban flooding based on historical precipitation percentiles. Based on urban flooding disasters, it studies the precipitation-induced disaster factors, discovering and confirming that short-duration heavy rainfall is a common characteristic of the disaster. The maximum cumulative precipitation over different durations and the duration of heavy rainfall are selected as the main disaster-inducing meteorological factors. Binary data is established, with 80% used for training and 20% for testing. The optimal decision regression tree model for the maximum inundation depth is established by adjusting parameters using the CART decision tree regression method. Based on this, the historical percentiles of precipitation factors are introduced into the decision tree regression model, resulting in a decision tree regression model based on historical precipitation percentiles that considers both regional characteristics and site-specific features. The model outperforms decision tree models that do not consider historical precipitation percentiles and can be used for early identification and forecasting of urban flooding.
Owner:NATIONAL METEOROLOGICAL CENTRE

Capacity factor prediction method and system for new energy output, terminal equipment and medium

PendingCN121618415AGeneration forecast in ac networkForecastingNew energyRegression tree model
The invention provides a capacity factor prediction method and system for new energy output, terminal equipment and a medium. The method comprises the following steps: acquiring a geographic position identifier, a current time period and meteorological data; retrieving a corresponding pre-trained regression tree model from a preset capacity factor database; inputting the meteorological data into the regression tree model, traversing a tree structure, and determining a target leaf node; reading to obtain a capacity factor prediction value; wherein the regression tree model is obtained through training according to meteorological sample data and sample capacity factors of historical data samples, and prediction output of each leaf node is optimized through Gaussian kernel density estimation. According to the method, the significant nonlinear and time-varying correlation between new energy power generation and meteorological conditions is considered, and compared with a traditional mean value prediction method, the influence of abnormal values can be avoided, so that the accurate prediction of the capacity factor is realized.
Owner:POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD

A method for synergistic regulation of nitrous oxide emission reduction in farmland and soil nitrogen leaching

PendingCN122311596AAnalysis dataSoil science
This invention discloses a system and method for synergistic regulation of nitrous oxide emission reduction and soil nitrogen leaching in farmland, relating to the field of farmland nitrogen management technology. The method integrates meta-analysis and enhanced regression tree models. Through steps such as collecting relevant research data on biochar application, screening effective sample data, constructing a meta-analysis database, identifying key influencing factors, establishing mathematical quantitative relationships, constructing an enhanced regression tree model, and developing simulation optimization schemes, it achieves accurate prediction and synergistic regulation of N2O emissions and soil nitrogen leaching under different farmland conditions. This invention can quantify the relative importance of each influencing factor, dynamically generate quantitative and operable field management plans adapted to different production scenarios, and ensure the stability of emission reduction effects through long-term monitoring and dynamic feedback mechanisms. It promotes efficient nitrogen utilization and sustainable development in farmland, possesses broad application value, is easy to implement and promote in large-scale farmland, and provides a reliable path for effective greenhouse gas emission reduction.
Owner:KUNMING UNIV OF SCI & TECH