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33results about How to "Accurate and fast calculation" patented technology
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Efficient presentation of comupter object names based on attribute clustering
InactiveUS20120221571A1Accurate and fast calculationLarge actionDigital data processing detailsSpecial data processing applicationsHigh weightComputer memory
A method for discovering and presenting ordered groups of names of objects that are commonly used together by an individual user of a computer system. The invention tracks usages of computer objects and computes a measure of importance (a “weight”) based on attributes such as time of use and other application dependent data. The objects that are commonly used at the same time are called a cluster, and clusters with the highest cumulative weights are the ones a user is most likely to use again in conjunction with one another. A user can select an entire cluster or a subset. The objects with the highest weights in the cluster are presented first when the user, having selected a cluster, needs to select a subset of the objects in the cluster. The invention uses space saving techniques to represent clusters in computer memory.
Owner:ORMAN HILARIE
Dynamic light modulation display control method and device of backlight source
ActiveCN108648700AIt is convenient to obtain the brightness diffusion coefficientAccurate and fast calculationStatic indicating devicesComputer scienceLight modulation
Owner:BOE TECH GRP CO LTD +1
Shale gas physical geography quick evaluation method
InactiveCN104500049AEasy to mineSolve the very inconvenient problem of miningInformaticsInstrumentsKerogenWell logging
The invention discloses a shale gas physical geography quick evaluation method. The geologic factors of production of shale gas are as follow: clay, kerogen, porosity, water saturation and permeability, and according to the above geologic factors, evaluation calculation with different models is performed: in the conventional well logging interpretation, the content of clay is calculated by a uranium-free gamma ray curve; the formation of kerogen is mostly in the reduction environment with relatively high content of the radioactive element U, so that a peak appears in the natural gamma ray curve, and as the density of kerogen is relatively low, TOC is integrally calculated with several methods; the value of porosity is calculated by a neutron-density crossplot, and the amount of minerals in rock can also be calculated through correction of the crossplot; the water saturation is calculated by the Archie's formula; and the permeability is calculated according to regression of porosity, and only the shale segment reservoir bed is subjected to regression. The shale gas physical geography production factors can be quickly and accurately calculated, and the results are accurate.
Owner:CHENGDU CHUANGYUAN OIL & GAS TECH DEV
Method and structure for vehicular traffic prediction with link interactions
ActiveUS20080175161A1Accurate and fast calculationIncrease variabilityAnalogue computers for vehiclesError preventionTraffic capacityTraffic prediction
A method and structure for predicting traffic on a network, includes a receiver which receives data related to traffic on at least a portion of a network. A calculator calculates a traffic prediction for at least a part of the network, the traffic prediction being calculated by using a deviation from a historical traffic on the network.
Owner:TOMTOM GLOBAL CONTENT
Method for identification of traffic lane boundary
ActiveUS8116968B2Reduce misjudgmentAccurate and fast calculationAnalogue computers for vehiclesHand manipulated computer devicesNormal densitySimulation
The invention provides a method for identification of traffic lane boundary. Firstly the microwave signal is received, and the noise reduction is treated for the microwave signal. Then the frequency domain information is employed to calculate the legal set of closed interval, in order to form the frequency span information. Finally, the probability density function model is employed to calculate the frequency span information in order to identify the traffic lane boundary.
Owner:NAT CHIAO TUNG UNIV
Method and structure for vehicular traffic prediction with link interactions and missing real-time data
ActiveUS8755991B2Accurate and fast calculationAnalogue computers for vehiclesInstruments for road network navigationTraffic capacityMissing data
A method and apparatus for predicting traffic on a transportation network where real time data points are missing. In one embodiment, the missing data is estimated using a calibration model comprised of historical data that can be periodically updated, from select links constituting a relationship vector. The missing data can be estimated off-line whereafter it can be used to predict traffic for at least a part of the network, the traffic prediction being calculated by using a deviation from a historical traffic on the network. The invention further discloses a method for in-vehicle navigation; and a method for traffic prediction for a single lane.
Owner:TOMTOM GLOBAL CONTENT
Backlight diffusion transmission parameter acquisition method and display control method and device
ActiveCN108665866AIt is convenient to obtain the brightness diffusion coefficientAccurate and fast calculationStatic indicating devicesNon-linear opticsDiffusionDiffusion function
The invention discloses a backlight diffusion transmission parameter acquisition method and a display control method and device based on the same. The method for acquiring the backlight diffusion transmission parameter includes the following steps of: selecting a plurality of backlight sources of different backlight areas, and measuring the light diffusion data thereof respectively; carrying out pre-processing on the data to obtain effective pixels; establishing a point diffusion function y=f (x) representing the relationship between the diffusion luminance y and the diffusion distance x; carrying out curve fitting according to the data corresponding to each effective pixel point to obtain the parameters in the point diffusion function, and using the point diffusion function as the backlight diffusion transmission parameter. The diffusion of the backlight source can be accurately modeled, and the brightness diffusion coefficient of the backlight source to any distance can be conveniently obtained. The method is used for accurately calculating the equivalent backlight of each pixel point, the corresponding LCD compensation image can be obtained and the same or even better display effect as the full backlight display is realized.
Owner:BOE TECH GRP CO LTD +1
Method and structure for vehicular traffic prediction with link interactions
ActiveUS7953544B2Accurate and fast calculationIncrease variabilityAnalogue computers for vehiclesError preventionTraffic capacityTraffic prediction
A method and structure for predicting traffic on a network, includes a receiver which receives data related to traffic on at least a portion of a network. A calculator calculates a traffic prediction for at least a part of the network, the traffic prediction being calculated by using a deviation from a historical traffic on the network.
Owner:TOMTOM GLOBAL CONTENT
Portable hydraulic oil particle and moisture detection device
The invention provides a portable hydraulic oil particle and moisture detection device, characterized in that: the device comprises a bidirectional plunger pump (8), an automatic particle counting sensor (10), and a moisture sensor (12) connected with an oil outlet pipe, and the bidirectional plunger pump (8), the automatic particle counting sensor (10) and the moisture sensor (12) are successively connected through high pressure flexible pipes; the device is provided with an embedded microprocessing system (11), the embedded microprocessing system (11) is connected with the moisture sensor (12), a display screen and a printer through data lines; a motor-driven electric device (9) controls the bidirectional plunger pump (8) to work. The portable hydraulic oil particle and moisture detection device overcomes the problem that a hydraulic oil detector only can detect particle or moisture, combines off-line and one-line application together, can be directly accessed in a hydraulic system to realize the simultaneous detection of hydraulic oil particle and moisture, and has the advantages of convenient operation, high precision, lasting stability, and the like.
Owner:WUHAN UNIV OF TECH
Calculation method of sub-synchronous oscillation mode attenuation coefficients based on Prony algorithm
InactiveCN104852392AImprove noise immunityAccurate and fast calculationPower oscillations reduction/preventionSpecial data processing applicationsAttenuation coefficientUltrasound attenuation
The invention relates to a calculation method of the sub-synchronous oscillation mode attenuation coefficients based on Prony algorithm, and mainly aims at solving the problem in extracting key modal parameters as modal frequency and attenuation coefficients from sub-synchronous signals. The calculation method is based on the Prony algorithm, takes shafting rotating speed signal of high sensitivity as input signals, employs least square fit, greatly eliminates influence of noise signals, requires no filtering, reserves all data information, is capable of extracting multiple modal information, and thus, extracts attenuation coefficients of different modes accurately and rapidly.
Owner:SHENHUA GUOHUA (BEIJING) ELECTRIC POWER RES INST +1
Method for identification of traffic lane boundary
ActiveUS20100161204A1Reduce wrong judgmentReduce misjudgmentAnalogue computers for vehiclesAnalogue computers for trafficFrequency domainMicrowave signals
The invention provides a method for identification of traffic lane boundary. Firstly the microwave signal is received, and the noise reduction is treated for the microwave signal. Then the frequency domain information is employed to calculate the legal set of closed interval, in order to form the frequency span information. Finally, the probability density function model is employed to calculate the frequency span information in order to identify the traffic lane boundary.
Owner:NATIONAL CHIAO TUNG UNIVERSITY
High speed paper counter based on image sensor
The invention discloses a high-speed paper counter based on image sensor. The paper counter comprises a photoelectric integration module, a data transmission module, a data processing module, a man-machine interface and a power supply module, which match and are connected with each other. The photoelectric integration module comprises a linear image sensor; the data processing module comprises an A / D conversion chip capable of receiving the image information sent by the linear image senor and converting original image information into digital information; the data processing module comprises a universal programmable input output port capable of carrying out data exchange with the A / D conversion chip and the data processing module is connected with the man-machine interface through a transmission line; the power supply module is electrically connected with the photoelectric integration module, the data transmission module, the data processing module and the man-machine interface. The counter does not comprise any part concerning mechanical action and the counting process consequently does not comprise any mechanical action with convenient operation. The counter is applicable to counting paper with a thickness from 0.05mm to 10mm and the softness degree of a counting object does not affect the counting speed and accuracy of the counter.
Owner:NINGBO SHENGGUANG PACKAGING & PRINTING CO LTD
Non-destructive detection method for martensite change amount in austenite stainless steel
ActiveCN104820012AEasy to carryEasy and fast readingMaterial magnetic variablesNon destructiveMeasurement cost
The present invention discloses a non-destructive detection method for the martensite change amount in an austenite stainless steel, wherein the phase change products of the austenite stainless steel are paramagnetic epsilon-martensite and ferromagnetic alpha'-martensite, and based on the austenite stainless steel material with the deformation amount of less than 15%, the detection method specifically comprises that the ferromagnetic alpha'-martensite content in the austenite stainless steel is measured through a ferrite meter and the value is recorded as x, and the martensite change amount in the austenite stainless steel is obtained through the following function relation formula f(x)=1.67x+1.48, wherein the f(x) is the martensite change amount and includes the total content of the epsilon-martensite and the alpha'-martensite, and x is the alpha'-martensite content measured through the ferrite meter. With the method of the present invention, the value of the martensite change amount in the austenite stainless steel can be accurately and rapidly calculated in the practical application, such that the measurement time and the measurement cost of the enterprise are saved, and the foundation is established for the application of the austenite stainless steel material in the low temperature environment.
Owner:HEFEI GENERAL MACHINERY RES INST +1
Novel rapid bidirectional reflection distribution function testing system and method
PendingCN109470656AAccurate measurementAccurate and fast calculationScattering properties measurementsVertical planePhotovoltaic detectors
The invention discloses a novel rapid bidirectional reflection distribution function testing system and method. An optical aperture is formed in the top of a hemispherical testing darkroom; a testinglight source is arranged just above the optical aperture; multiple photoelectric detectors are tightly arranged on the inner spherical surface of the hemispherical testing darkroom; all the photoelectric detectors are connected with a signal processing system; a four-dimensional working turntable is arranged in the hemispherical testing darkroom; a to-be-tested sample is arranged on the four-dimensional working turntable by virtue of a sample supporting component; the four-dimensional working turntable drives the horizontal plane and the vertical plane of the to-be-tested sample to rotate; after light beams of the testing light source come into the to-be-tested sample via the optical aperture after collimation; incident light are scattered via the to-be-tested sample, the scattered light signal is received by the photoelectric detectors, the photoelectric detectors output signals to the signal processing system to process so as to obtain the bidirectional reflection distribution function of the to-be-tested sample. According to the system and method disclosed by the invention, rapid measurement of the bidirectional reflection distribution function of the sample in a 2Pi hemispherical space range can be realized, and the measurement accuracy is high.
Owner:BEIJING UNIV OF TECH +1
Energy consumption metering method and device and electric appliance
ActiveCN111830350AAccurate and fast calculationElectrical testingTime integral measurementCoulombmeterEnergy consumption
The invention discloses an energy consumption metering method and device and an electric appliance. The energy consumption metering method comprises the following steps of acquiring working data of aunit, judging whether the working data contains electric meter electric quantity data or not, if not, inputting operation data in the working data into a preset energy consumption metering model to obtain a power consumption calculation value, and taking the power consumption calculation value as actual power consumption, and if so, correcting the preset energy consumption metering model accordingto the operation data in the working data and the electric meter electric quantity data by taking the electric meter electric quantity data as actual power consumption. According to the method, the energy consumption metering model is continuously corrected and optimized in the operation process of the electric appliance, and the actual power consumption of the electric appliance is accurately and quickly metered.
Owner:GREE ELECTRIC APPLIANCES INC
Gene expression profile distance measurement method based on deep learning
ActiveCN110033041AAccurate and fast calculationCharacter and pattern recognitionNeural architecturesGene EnrichmentProfile analysis
The invention belongs to the field of gene expression profile classification, discloses a gene expression profile distance measurement method based on deep learning, and belongs to mining and application of deep learning on biological big data. Firstly, a convolutional neural network model suitable for gene characteristic metric learning is designed to extract data characteristics, then the distance between the data is calculated by applying an improved cosine distance, and finally, the good performance of the method is measured through the classification effect of a classification algorithm.According to the method, the similarity between different gene expression profiles can be quickly and efficiently measured, and data is provided for subsequent researches such as gene classification,clustering, differential expression analysis and compound screening. Compared with a traditional gene enrichment method, the method has the advantages that the distance measurement effect between thedata is obviously improved, the manual intervention during gene expression profile analysis can be effectively reduced, the overfitting phenomenon easily generated by a conventional deep network is avoided, and the method has relatively high mobility.
Owner:HUNAN UNIV
Jointed rock mass volume joint number determination method based on drilling camera shooting technology
InactiveCN111649672AComprehensive considerationAccurate and fast calculationUsing optical meansClassical mechanicsMechanics
The invention discloses a jointed rock mass volume joint number determination method based on a drilling camera shooting technology, which is applied to the technical field of rock mass integrity evaluation, and comprises the following steps of S1, selecting a surface area per unit area on the surface of a rock mass to be measured, S2, measuring the rock mass surface joint number Js, the joint distance H and the inclination angle theta between the joint and the horizontal roadway of the surface area of the unit area, S3, drilling holes in the surface area of the unit area, and measuring the number Jc of joints in the rock mass, and S4, comparing the joint distanceH measured in the step S2 with a sine value and a cosine value of the joint inclination angle theta, and determining the rock mass volume joint number Jv. According to the method, the volume joint Jv is calculated by comprehensively considering the internal joint Jc and the surface joint Js, the considered factors are more comprehensive, and the calculation is more accurate and faster.
Owner:NORTHEASTERN UNIV LIAONING
Object volume measurement method and device, measurement equipment and storage medium
PendingCN111986251AAccurate and fast calculationImprove efficiency and accuracyImage enhancementImage analysisMeasuring equipmentMeasurement device
The embodiment of the invention discloses an object volume measurement method and device, measurement equipment and a storage medium. The method comprises the steps: acquiring a current object image of an object through the measurement equipment, and detecting the key point position of the object in the current object image; generating a preset reference model according to the key point positions;if the preset edge of the object in the current object image coincides with the preset reference model, obtaining a motion parameter of the measurement device moving along the object direction; and when the motion parameters meet the preset conditions, the object image of the object is acquired through the measurement equipment, and the volume of the object is calculated based on the object image, so that the measurement accuracy and efficiency are improved.
Owner:SF TECH +1
Congestion control method and device for data transmission, computer equipment and storage medium
ActiveCN113766564AOvercoming complexityImprove efficiencyNetwork traffic/resource managementHigh level techniquesEngineeringData transmission
The invention relates to a congestion control method and a device for data transmission, computer equipment and a storage medium. The method comprises the following steps: collecting detection information, inputting the detection information into a bandwidth measurement and calculation network for measurement and calculation to obtain a target network bandwidth corresponding to each connection channel, and performing congestion control on to-be-transmitted data on each connection channel according to the target network bandwidth corresponding to each connection channel. According to the method, network detection is carried out by using the bandwidth measurement network, and congestion control is carried out based on the detection result, so that the effect of separation of detection and control is realized, and the problems of high complexity and poor control effect of the congestion control algorithm caused by simultaneous network detection and control in the traditional congestion control algorithm are solved. Moreover, in the method, network bandwidth measurement and calculation are carried out by utilizing the bandwidth measurement and calculation network based on the detection information of multiple dimensions, so that the effect of accurately and quickly measuring and calculating the current bandwidth of the network is achieved, and the efficiency and the stability of service data transmission are improved.
Owner:WUHAN UNITED IMAGING HEALTHCARE CO LTD
Over-drive value generating apparatus and method
ActiveUS20150310813A1Fast and accurately determiningReduce the number of timesCathode-ray tube indicatorsSteroscopic systemsComputer scienceBrightness perception
The present invention provides an over-drive value generating apparatus, which includes: a measuring module utilized to measure a plurality of brightness values shown by using a plurality of first-eye gray scales in every n scales and a plurality of second-eye gray scales in every n scales; an interpolation module utilized to linearly interpolate the brightness values into N×N brightness values which consist of N first-eye gray scales respectively corresponding to N second-eye gray scales; a calculating module utilized to calculate N×N crosstalk values of the N first-eye gray scales respectively switching to the N second-eye gray scales; and a determining module utilized to determine a first over-drive gray scale and a second over-drive gray scale. The present invention further provides a method for generating over-drive values.
Owner:SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD
A non-destructive testing method for martensite transformation in austenitic stainless steel
ActiveCN104820012BWith NDTEasy to carryMaterial magnetic variablesNon destructiveMartensite transformation
The invention discloses a non-destructive detection method for martensite transformation in austenitic stainless steel. The phase transformation products of austenitic stainless steel are paramagnetic ε-martensite and ferromagnetic α′-martensite. For austenitic stainless steel materials with a deformation of less than 15%, the specific steps of the detection method are as follows: first, measure the content of ferromagnetic α′-martensite in austenitic stainless steel with a ferrite meter, and record the value as x; Then, through the following functional relationship, the martensite transformation in austenitic stainless steel is obtained: f(x)=1.67x+1.48; in the above formula: f(x) is the martensite transformation, including ε- The total content of martensite and α′-martensite; x is the content of α′-martensite measured by ferrite meter. In practical application, the present invention can accurately and quickly calculate the value of the martensite transformation in austenitic stainless steel, which saves the measurement time and cost of the enterprise, and also lays a foundation for the application of austenitic stainless steel materials in low temperature environments .
Owner:HEFEI GENERAL MACHINERY RES INST +1
Method for obtaining diffusion transmission parameters of backlight source, display control method and device
ActiveCN108665866BIt is convenient to obtain the brightness diffusion coefficientAccurate and fast calculationStatic indicating devicesNon-linear opticsPoint spread functionDisplay device
A method for acquiring backlight diffusion transmission parameter, a display control method and a display control device are provided. The method includes: selecting a plurality of backlight sources respectively arranged at different backlight regions of a display device and measuring a light diffusion data for each of the plurality of backlight sources, where the light diffusion data includes luminance values of a plurality of pixel points of a screen of the display device and a distance between a position of each pixel point and a position of a certain backlight source of the plurality of backlight sources in the case that only the certain backlight source is turned on; preprocessing the light diffusion data to determine effective pixel points of the plurality of pixel points; fitting the light diffusion data of the effective pixel points, to obtain a point spread function y=ƒ(x) indicating a relationship between y representing a diffusion luminance value and x representing a diffusion distance, where y representing a diffusion luminance value is a luminance value of each pixel point, and x representing a diffusion distance is a distance between a position of the each pixel point and a position of a certain backlight source of the plurality of backlight sources; and determining the point spread function y=ƒ(x) as the backlight diffusion transmission parameter.
Owner:BOE TECH GRP CO LTD +1
Home site identification method, device, equipment, and readable storage medium
ActiveCN110363591AAccurate and fast calculationMarket data gatheringTransaction dataIdentification device
The invention discloses a home station identification method. The method comprises the following steps of acquiring first subway PSAM card home station real data and first PSAM transaction data with amatching relationship in a first time period; creating a feature user table by using the real data of the site to which the first subway PSAM card belongs and the first PSAM transaction data; obtaining second PSAM transaction data in a second time period and segmenting the second PSAM transaction data to obtain each piece of transaction flow data; and voting the transaction flow data by using thefeature user table to obtain second subway PSAM card attribution site data matched with each piece of transaction flow data. According to the method, the PSAM card attribution site can be accuratelyand quickly calculated. The invention further discloses a home site identification device and equipment and a readable storage medium, which have corresponding technical effects.
Owner:GUANGDONG UNIV OF TECH
A distance measurement method for gene expression profiles based on deep learning
ActiveCN110033041BAccurate and fast calculationCharacter and pattern recognitionNeural architecturesGene FeatureExpression analysis
The invention belongs to the field of gene expression spectrum classification, discloses a gene expression spectrum distance measurement method based on deep learning, and belongs to the mining and application of deep learning on biological big data. First, a convolutional neural network model suitable for gene feature metric learning is designed to extract the characteristics of the data, and then the distance between the data is calculated by using the improved cosine distance, and finally the classification effect of the classification algorithm is used to measure the performance of the method excellent. This method can quickly and efficiently measure the similarity between different gene expression profiles, and provide data for subsequent studies such as gene classification, clustering, differential expression analysis, and compound screening. Compared with the traditional gene enrichment method, this method significantly improves the distance measurement effect between data, and can effectively reduce the manual intervention in gene expression profile analysis, avoiding the over-fitting phenomenon that is easy to occur in conventional deep networks. This method has strong transferability.
Owner:HUNAN UNIV
Method and preheating control apparatus of compressor
InactiveCN100581047CAccurate and fast calculationCompensation voltage errorAC motor controlSpace heating and ventilation safety systemsElectrical resistance and conductanceTemperature control
Owner:SAMSUNG ELECTRONICS CO LTD
Energy consumption measurement method, device and electrical appliance
ActiveCN111830350BAccurate and fast calculationElectrical testingTime integral measurementEnergy meteringElectricity meter
Owner:GREE ELECTRIC APPLIANCES INC
Motor Temperature Calculation System Using Thermal Equivalent Circuit
ActiveCN108233636BAvoid thermal failureIncreased durabilityWindings insulation shape/form/constructionElectric motor controlElectric machineryHeat capacity
The present application relates to a temperature calculation system of a motor using a thermal equivalent circuit, which includes: a yoke, a first tooth and a second tooth, and a coil member, the yoke is arranged along the inner circumferential surface, the first tooth part and the second tooth part are arranged on the inner peripheral surface of the yoke part while having an interval set in the circumferential direction, the coil member is formed between the first tooth part and the second tooth part and includes a plurality of coils, the system Form the thermal equivalent circuit of the coil member and calculate the temperature of the set portion of the coil member, wherein, by using the radial conduction resistance and the temperature T of the inner side of the coil member c To calculate the outer peripheral surface temperature and the inner peripheral surface temperature of the coil member, the average temperature, and the temperature of the end surface is calculated by using the axial conduction resistance and the average temperature.
Owner:HYUNDAI MOTOR CO LTD +1
Determination Method of Volume Joint Number of Jointed Rock Mass Based on Borehole Camera Technology
InactiveCN111649672BComprehensive considerationAccurate and fast calculationUsing optical meansClassical mechanicsJoint spacing
The invention discloses a method for determining the volume and joint number of jointed rock mass based on drilling camera technology, which is applied to the technical field of rock mass integrity assessment and includes the following steps: S1. Selecting a surface area per unit area on the surface of the rock mass to be tested ; S2, measure the rock mass surface joint number Js of the surface area of the unit area, the joint spacing H and the inclination angle θ of the joint and the horizontal roadway; S3, drill holes on the surface area of the unit area, and measure the number of joints inside the rock mass Jc; S4. Comparing the joint spacing H measured in step S2 with the sine and cosine values of the joint inclination angle θ to determine the volumetric joint number Jv of the rock mass. The present invention comprehensively considers the internal joint Jc and the surface joint Js to calculate the volume joint Jv, the consideration factors are more comprehensive, and the calculation is more accurate and fast.
Owner:NORTHEASTERN UNIV LIAONING
Over-drive value generating apparatus and method
ActiveUS9761186B2Fast and accurately determiningReduce the number of timesStatic indicating devicesSteroscopic systemsLinearityComputer science
Owner:TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
A home site identification method, device, equipment and readable storage medium
The invention discloses a method for identifying a home station. The method comprises: obtaining the real data of the home station of the first subway PSAM card and the first PSAM transaction data having a matching relationship within a first period of time; using the real data of the home station of the first subway PSAM card Create a characteristic user table with the first PSAM transaction data; obtain the second PSAM transaction data in the second period and divide the second PSAM transaction data to obtain each transaction flow data; use the characteristic user table to vote on the transaction flow data, Obtain the attribution site data of the PSAM card of the second subway that matches each transaction flow data. The method can accurately and quickly calculate the PSAM card attribution site. The invention also discloses a home site identification device, equipment and a readable storage medium, which have corresponding technical effects.
Owner:GUANGDONG UNIV OF TECH
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