851results about How to "Quick forecast" patented technology

There are provided a positioning section for locating a current position, a travel history database for storing a history of a current position located by the positioning section and a history of a travel to an institution or the like actually visited by walking or so from at least one geographic point in the history, and a destination predicting section for predicting a destination on the basis of a history of using an institution actually visited by walking or so stored in the travel history database. This makes it possible to practically predict as a destination an institution actually visited by walking or so.

The invention belongs to the field of intelligent transportation, and provides an automatic driving lane change trajectory planning method based on quadratic form planning and a neural network. The method provided by the invention comprises the steps of: obtaining driving information of a lane change vehicle and surrounding vehicles by using an information sensing module; providing, by a lateral deviation recommendation module, a lateral deviation value based on the vehicle driving information so as to determine starting point and ending point position information of the lane change vehicle; calculating, by a path planning module, a static lane change path in a plane coordinate system of the lane change vehicle by using the vehicle driving information and the lateral deviation as input; and finally, providing, by a trajectory planning module, a time varying change law of the lane change vehicle and the surrounding vehicles to complete the target of lane change process planning. By adopting the automatic driving lane change trajectory planning method provided by the invention, under the premise of ensuring the safety of the lane change vehicle, the movement trajectories of the lanechange vehicle and the surrounding vehicles are comprehensively considered, and fast solution is achieved by using the quadratic form planning to improve the speed and comfort of the lane change process, thereby satisfying the requirements of automatic driving for the lane change sub-task optimization solution fastness.

The invention discloses a TV shopping commodity recommendation method based on a classification algorithm. The TV shopping commodity recommendation method comprises the steps of: converting a prediction problem into a classification problem by utilizing logistic regression and a random forest, namely, predicting that purchasing behaviors of a user about a commodity can be divided into two categories: purchasing and not purchasing; extracting features from commodity information, user information and a user behavior record as input, and taking a prediction score of the user as output, thereby forming a function; and training a model by adopting a linear regression method, and converting the problem into a training classifier problem. The TV shopping commodity recommendation method does not carry out prediction and calculation on the basis of a heuristic rule, but carries out prediction on the basis of data analysis and statistics as well as machine learning for training model; and new users and new commodities can be calculated and predicted quickly as long as the model is trained.

A noise dosimeter with capability to rapidly predict noise exposure over an extended time period based on a measurement of short duration. Either an acoustic or an electrical earphone adapter provides a convenient means to connect the noise dosimeter to an external sound source. A direct input jack operable to receive at least one audio signal provides a signal to an RMS detector, which provides a DC signal to a two-stage amplifier circuit. The outputs of the amplifiers are provided to a processor having multiple A/D channels. The processor calculates accumulated noise doses and drives a display, which in one embodiment includes a panel of light-emitting diodes. In one embodiment, the dosimeter includes functionality for control of external devices such as sound boards.

The invention discloses a chlorophyll calculating method based on remote-sensing images and a water ecological model. The method comprises the steps of 1, based on remote-sensing image data, data preprocessing like radiometric calibration, atmospheric correction and image cropping and fusing is conducted; 2, a remote-sensing water quality inversion model is constructed, and respective inversion ofindexes like water temperature and chlorophyll concentration is achieved; 3, various index concentrations and future weather change which are obtained through inversion of the remote-sensing images are regarded as input conditions of the water ecological model, and the chlorophyll concentration dynamic change process of a water area environment is simulated within a future duration caused by change like nutritive substance conversion and algae growth and death under a future weather change condition. The chlorophyll calculating method is applicable to water environment monitoring and predicting, and has popularity and high calculation precision, chlorophyll concentration prediction and simulation of a large area of a drainage basin are achieved in real time under the condition of the limited monitoring site, and an integrated chlorophyll concentration predicting system integrating the remote-sensing images and the water ecological model can be formed.

Seamless migration of an AP/STA link across channels to compensate for a changing RF environment is achieved by forecasting alternate AP communication channels to an STA prior to loss of connectivity on the link. The AP, when identifying a preferred communication channel, also identifies an alternate communication channel, and communicates this alternate channel to a coupled STA. In the event that communication between the AP and the STA is lost, the STA can quickly predict the new location of the AP, and migrate to the new channel without loss of communication state. The AP is not required to communicate to any STA that it has switched stations. Rather, the fact that the AP has switched is inferred at the STA by the inability of the STA to communicate with the AP. Thus the present invention may be used to preserve link state when a communication channel used by the AP/STA link is blocked.

The invention discloses a rapid detection method for the battery life. The rapid detection method for the battery life comprises the steps that firstly, the maximum available capacity of a battery is rapidly estimated on the basis of a partial discharge method; secondly, the capacity retention rate is acquired through the maximum available capacity; finally, the residual cycle life, represented in a cycle index mode, of the battery is estimated according to the current capacity retention rate and the known rated cycle life of the battery. It is clear that the maximum available capacity is selected as a key performance parameter, degradation track modeling is conducted on the maximum available capacity of the battery on the basis of a performance degradation method, and then prediction of the residual cycle life of the lead-acid battery is achieved. In addition, the maximum available capacity of the battery is estimated on the basis of the partial discharge method, so that rapid prediction of the residual cycle life of the battery is achieved. Due to the fact that whole-process discharge operation does not need to be conducted, the test time is greatly shortened, the accuracy can be satisfactory on the premise that the discharge rule of the battery is grasped, and the rapid detection method for the battery life has the high application value in the fields of military, energy sources and traffic.

The invention discloses a video emotion identification method based on emotion significant feature integration. A training video set is acquired, and video cameras are extracted from a video. An emotion key frame is selected for each video camera. The audio feature and the visual emotion feature of each video camera in the training video set are extracted. The audio feature is based on a word package model and forms an emotion distribution histogram feature. The visual emotion feature is based on a visual dictionary and forms an emotion attention feature. The emotion attention feature and the emotion distribution histogram feature are integrated from top to bottom to form a video feature with emotion significance. The video feature with emotion significance is sent into an SVM classifier for training, wherein the video feature is formed in the training video set. Parameters of a training model are acquired. The training model is used for predicting the emotion category of a tested video. An integration algorithm provided by the invention has the advantages of simple realization, mature and reliable trainer and quick prediction, and can efficiently complete a video emotion identification process.

The invention discloses a river way multi-sensor fusion upstream and downstream pollution early warning system and method. A river way part includes a water quality on-line monitoring buoy nodes deployed on multiple parts of the upstream and the downstream of a river way, and a shore part includes a wireless gateway and a cloud server. The water quality on-line monitoring buoy nodes are used for real-time collection, storage and transmission of water quality data; the system includes a water quality multi-sensor system, a water flow sensor, a real-time clock module, a microprocessor, a wireless communication module, an antenna, a storage module and a power source module. A river way multi-sensor data fusion analysis model is established by the cloud server, the multi-sensor data fusion method is used for analyzing whether the pollution exists in the river way, classifying pollutants and estimating the location of a pollution source, the upstream and downstream relations are combined for on-line monitoring and classified early warning on the river way water quality, whether the river way is invaded by the pollutants is judged, and the location of the pollution source is estimated. The system and the method perform on-line monitoring by multiple water quality parameters, and have the advantages of low energy consumption, high detection rate of the pollutants and wide applicationrange.

The automatic camera focusing method includes preset several evaluation values and possible focus ranges based on environment brightness value before initial scanning; coarse focusing in the possiblefocus ranges one by one until finding the focus range; fine focusing in the found focus range; and making the lens return to the peak position found in fine focusing. By means of the focus forecasting technology and simplified motor shifting process, the present invention has short focusing time and needs no manual focusing.

The invention is a method for predicting the thickness of steel board online in process of rolling. The method includes calculating the affection to the roller bounce by the roller group elastic deformation, measuring the elastic deformation of roller torii and the related mechanical parts, calculating the roller's bounce, predicting the thickness of the steel board and eliminating the affection of elastic bounce model zero shift to the prediction. The invention can predict the thickness of the steel board with high precision, stably and quickly, provide necessary information for automatic and manual interference.

The invention discloses a simulation calculation model for the heat exchange performance of a straight tube type once-through steam generator and an algorithm thereof. According to the simulation calculation model, a one-dimensional homogeneous flow mathematic model of the once-through steam generator based on heat transfer partition is established, a secondary side heat exchange process is divided by adopting appropriate distinguishing conditions, a once-through steam generator heat exchange simulation program based on MATLAB (matrix laboratory) software is developed independently on the basis of the simulation calculation model, and the simulation for the steady state heat exchange performance of the once-through steam generator under different working conditions is carried out. The programming difficulty is simplified and reduced, automatic judgment and piecewise calculation can be realized, the range and position of wall temperature uprise and the lengths of heat exchange tubes in all heat transfer areas under different working conditions are accurately predicted, and thus a serious working area of the once-through steam generator is obtained. Theoretical support can be provided for preventing the accidents, such as overtemperature tube burst, of the once-through steam generator.

The invention relates to a method for predicting dissolved oxygen saturation in a downstream water body of a high dam, in particular to a BP (back propagation) neutral network-based method for predicting the dissolved oxygen saturation in a water body. The method is characterized in that a three-layer BP neural network model is built to predict the dissolved oxygen saturation in a downstream designated area of the high dam. The method comprises the main steps as follows: (1) determining the main influencing factors of downstream dissolved oxygen of the high dam, and taking the main influencing factors as input variables of the BP model; (2) sample data acquisition: using monitoring data of the downstream designated area of the high dam as a learning sample; (3) BP neural network training: inputting the sample data obtained in step (2) in the three-layer BP network for training, comparing the output value of the network with the actual monitoring value until the mean square deviation of the network training meets the requirement, and determining the weight and the threshold value of the network; and (4) using the BP neural network, which passes the test, to predict the dissolved oxygen saturation of the downstream designated area. The method provided by the invention applies the neural network technology to prediction of dissolved oxygen saturation of the water body of the downstream designated area of the high dam, and solves the problem of quickly predicting the dissolved oxygen of the downstream designated area of the high dam.

The invention discloses a crude oil property rapid detection method based on a recombination prediction technology. The method is used for refinery enterprises, and adopts a near infrared spectrum database and the corresponding crude oil property database as a foundation. The crude oil property rapid detection method comprises the following steps of: firstly adopting a topology modelling technology to distinguish whether the topology modeling technology forecast is credible, if so, adopting the topology modeling technology to carry out crude oil key property data forecast, if not, adopting a partial least squares to carry out the crude oil key property data forecast, and guaranteeing the forecast accuracy of the crude oil key property data. The method provided by the invention can accurately forecast the crude oil property in ten minutes, so that the in-time accurate crude oil key property data is provided for the operation guidance of vacuum distillation units of the refinery enterprises, the blindness of a crude oil in a machining process is avoided, and the production efficiency and economic benefits of the refinery enterprises are improved.

The invention discloses a method for predicting the life of a small sample data object based on a dynamic bipolar modified probabilistic neural network (MPNN) and belongs to the technical field of the life prediction of small samples. The method comprises the following steps of: obtaining a function relation between life influencing factors and life characteristic parameters of a prediction object by collecting all available data of a life prediction object and preprocessing life prediction related data and analyzing data dependency for the life prediction object; then mapping data and obtaining equivalent data values of the prediction object; performing a primary MPNN training and prediction and a secondary MPNN training and prediction by using the improved MPNN; and finally, determining life values of the prediction object according to a life termination criterion of the life characteristic parameters of the prediction object. The method can realize the life prediction of the small sample data object by fully using the life influencing factor data of the prediction object under an adverse condition of a little practical available data of the prediction object and has a strong universality; and moreover, a life prediction model can dynamically regulate a neural network and can constantly improve the precision of the life prediction.

The invention discloses a Bohai sea spilled-oil transporting and extension value forecasting system.The system can conduct forecasting on a transporting trajectory of an oil film, an extended range, the oil film thickness, the oil-passing-through area, the time for spilled-oil for reaching a shore or a sensitive area and the like after oil spilling occurs on a point source and a continuous source in Bohai sea area, and a forecasting result can be displayed on a computer screen visually and dynamically.Oil spill emergency action modes, types and number of vessels and situations of laying oil fences or using oil dispersant or the like are selected according to the forecasting result, oil spill damage is relieved or eliminated, and disaster prevention and reduction are achieved.Back tracking is conducted on the source of spilled oil in the Bohai sea area by combining with finger prints and satellite remote sensing, the source of the spilled oil on the sea is found out, and therefore a troublemaker is determined.

The invention discloses a vehicle-mounted terminal multi-target recognition tracking prediction method, which is a vehicle-mounted terminal multi-target recognition tracking prediction method based onYOLOv5s (You Only Look Once v5s) and FairMOT (FairMOT) fusion, and detects vehicles in front of a road quickly and accurately in real time by using a YOLOv5s deep learning object detection technology. The YOLOv5s model is fused into the FairMOT architecture detection module to perform target detection and re-identification tracking in a single network so as to realize position detection, type identification and multi-target motion trajectory tracking of the traffic target in front of the vehicle on the road, thereby achieving prediction of driving behaviors of lane change, following, deceleration and the like of the traffic target in front of the vehicle.

The invention provides a lottery user churn prediction method based on multi-dimensional data. The method comprises the steps that original user data are collected; the original user data are extracted and converted, and are classified and loaded to a database in a specified format; preprocessed multi-dimensional user data are iteratively tested to extract potential features related to user churn to acquire a feature set; the feature set is divided into training set, a verification set and a test set based on time dimension; logistic regression modeling is carried out based on the training set to acquire multiple sets of prediction models; the verification set is input into the prediction models; the prediction model with the highest accuracy is used as the final user churn evaluation model; and the test set is input into the user churn evaluation model to predict the user churn situation. The invention further provides a lottery user churn prediction system based on multi-dimensional data. According to the technical scheme provided by the invention, the prediction difficulty can be reduced, and the prediction accuracy is improved.

A cutting force prediction method based on features is characterized in that feature recognition is carried out on a part based on a CAD three-dimensional model, and drive geometry recognizing the features is extracted according to a feature recognition result and is dispersed into some points. A primary process decision is carried out to obtain rotating speed, feeding, cutting depth, cutting width and other process parameters, a shearing force action coefficient and a cutting edge force coefficient are measured through experiments, a cut-in angle and a cut-out angle are calculated according to cutting parameters, and finally cutting force is calculated. According to cutting force prediction based on the features, the cutting force can be calculated according to the cutting parameter with different features in the part process decision process, and warning and process modification are carried out on the relatively large feature of the cutting force. Before post-processing, the cutting force can be predicted earlier. The predicted cutting force aims at each feature, that is, the modification is for a single feature, the processing efficiency of each feature of a plane structural component can be maximized, overall efficiency is accordingly maximized, and the number of simulation times is reduced.

The invention discloses a method for testing grading broken stone CBR numerical value. According to the invention, a physical model and a mechanical model are established for simulating the grading broken stone CBR test, the method comprises the following steps: testing basic parameters, simulating of a CBR testing model, test pieces, a load plate, a CBR pressure head and the like, endowing the physical model with micro mechanics parameters, simulating a loading process of CBR test, finishing an arrangement of the simulation result to obtain the relational curve of the pressure head penetration rate and the penetration force, and obtaining the penetration force corresponding to a penetration rate of 2.5 mm according to the relational curve of the penetration rate and the penetration force. According to the invention, the grading broken stone CBR value can be rapidly and accurately predicted by the method, and a change rule of grading broken stone stress-strain can be represented.

The invention belongs to the technical field of comprehensive prediction methods of earthquake in uranium ore, in particular to a method for comprehensively predicting earthquake in sandstone uraniumore. A seismic wave impedance inversion method is used to reversely calculate distribution of sand to obtain sand content information of a target formation directly related to uranium ore formation; wave impedance information of the target formation is converted into porosity information related to ore forming action via the conversion relation or experiential conversion relation of drilling datastatistics; a three-dimensional seismic data body is finally used to extract sensitive seismic attribute information related to a uranium ore forming environment; by comprehensively analyzing and studying and predicating the uranium ore forming potential of a work area via the three types of information, it is possible to quickly and effectively predict the development range of a sandstone uraniumore target reservoir.

The invention relates to the technical field of parameter estimation of a storage battery, in particular to a method and a system for estimating a charge state of the storage battery. The method comprises the steps of obtaining data of on-line state characteristic quantity of the storage battery; utilizing the Newton interpolation method to obtain a plurality of first functions of discharging capacity with terminal voltage serving as an independent variable and a plurality of second functions of discharging capacity with discharging current serving as an independent variable; obtaining an evaluation value of measurement discharging capacity in a state of measuring the terminal voltage and the discharging current according to at least one first function and at least one second function; and obtaining a corresponding evaluation value of the charge state according to the evaluation value of measurement discharging capacity. The method and the system for estimating the charge state of the storage battery utilizes the Newton interpolation method to carry out evaluation of an SOC value of the storage battery, can accurately derive the remaining capacity variation trend so as to intuitively analyze problems and fast predict a phenomenon, and can achieve on-line measurement and high accuracy.