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841results about How to "Strong timeliness" patented technology

Method for obtaining resident travel characteristic parameter based on mobile phone positioning data

The invention discloses a method for obtaining a resident travel characteristic parameter based on mobile phone positioning data. The method comprises the following steps of: (1) collecting mobile phone positioning data; (2) filtering the mobile phone positioning data, matching the mobile phone positioning data to traffic zones, and obtaining the matched mobile phone positioning data; (3) using users as units, ordering the matched mobile phone positioning data in one day by time, merging the continuous data in the same one traffic zone into one piece, and obtaining mobile phone positioning pretreatment data; (4) according to the number of emerged pieces and influence duration, judging residing points, restoring a travel path between two residing points, and obtaining the travel distance and the travel speed, and then obtaining a travel log table of all users; (5) on the basis of the matched mobile phone positioning data, statistically obtaining a place of residence and workplace result table; and (6) and conjointly analyzing the travel log table and the place of residence and workplace result table, and obtaining resident travel characteristic parameters. The method has the characteristics of low cost, large sample quantity, high precision and high time validity.
Owner:北京交通发展研究院

Control system and method of dedicated lane for an autonomous vehicle

The invention discloses a control system and method of a dedicated lane for an autonomous vehicle. The system comprises a vehicle-mounted system, a roadside system, a cloud lane management center, anda road information prompting system. The vehicle-mounted system includes a vehicle-mounted information processing center, an information acquisition device, a vehicle-mounted communication module, and a human-computer interaction terminal arranged on a manually driving vehicle, and an automatic driving terminal arranged on the autonomous vehicle. The roadside system includes a roadside information processing center, a video monitoring module, a roadside unit and a second 5G communication module. The road information prompt system includes an information issuing center, a variable informationprompt board, a broadcast and a third 5G communication module. The cloud lane management center includes a data processing center, a traffic information database and a fourth 5G communication module.Different traffic congestion impact factors are assigned for a manually driving vehicle and an autonomous vehicle; and whether to start an autonomous vehicle dedicated lane is decided based on a traffic congestion index and an autonomous vehicle penetration index, so that the traffic efficiency is improved.
Owner:JIANGSU UNIV

Preventative device maintenance method based on dynamic reliability

ActiveCN104268678ADecision scienceScientific and effective maintenance measuresResourcesAnalysis dataMaintenance planning
The invention discloses a preventative device maintenance method based on dynamic reliability and belongs to the technical field of petrochemical equipment management. The preventative device maintenance method based on the dynamic reliability comprises the following steps of 1 establishing a device basic database including equipment accounts, historical maintenance and repair data, a fault strength analysis data, operation monitoring data and the like; 2 utilizing basic data to conduct operation time analysis, fault strength analysis and alarm state and operation trend analysis on devices; 3 utilizing results to establish a device reliability level and fault strength incidence matrix, formulate DRBPM data analysis logic, automatically screen preventative maintenance devices and generate preventative maintenance planning reports of the devices; 4 examining, verifying and executing the preventative maintenance planning reports of the devices. The preventative device maintenance method based on the dynamic reliability can be used for dynamic analysis and management of states of petrochemical equipment, facilitate formulation of scientific and effective device maintenance measures and provide guarantee for timely device fault elimination and production continuity reliability and can be widely applied to the technical field of petrochemical equipment management.
Owner:中国石油化工股份有限公司武汉分公司 +1

Attack and defense differential game-based network security defense decision determination method and device

The present invention relates to an attack and defense differential game-based network security defense decision determination method and a device. The method comprises the steps of constructing a state evolution model NIRM for network nodes according to an SIR model during the network attack and defense process; according to a network node state migration path, acquiring a node state change differential equation set based on the state evolution model NIRM; according to the node state change differential equation set, constructing an attack and defense differential game model ADDG; according to an attack and defense return strategy and a corresponding execution cost, executing a revenue function of the attack party and the defense party during the differential game process; according to the revenue function and the attack and defense differential game model ADDG, solving out a saddle point strategy for the attack party and the defense party through the dynamic planning method, determining an optimal defense strategy and outputting the optimal defense strategy. According to the technical scheme of the invention, the problem that actual requirements cannot be met through the traditional dynamic game analysis method can be solved. Compared with the existing network security defense strategy, the attack and defense process in the continuous and real-time engagement condition is analyzed. The timeliness, the pertinence and the guiding significance of network defense decision results are better.
Owner:THE PLA INFORMATION ENG UNIV

Image search method based on CGCI-SIFT (consistence index-scale invariant feature transform) partial feature

The invention discloses an image search method based on a CGCI-SIFT (consistence index-scale invariant feature transform) partial feature. The image search method is realized based on CGCI-SIFT and comprises the following steps of: starting from the strength and the distribution of the influence of a neighborhood domain pixel to a key point; establishing a periphery partial feature descriptor through gray level texture comparison strength information; and subsequently establishing a central partial descriptor by combining direction gradient information having relatively high central feature point description so as to form a final description, wherein the CGCI-SIFT utilizes the contrast property of a partial area and is combined with gradient information of the original SIFT algorithm, rather than that the SIFT in which the weight and the direction of the gradient are singly stored, so that the CGCI-SIFT has relatively comprehensive geometric and optical conversion invariance. Due to the utilization of the gray level texture comparison strength information, the CGCI-SIFT is simple in calculation, thereby being relatively efficient and relatively applicable to real-time application. Tests show that according to the search method, the performance is stable, the search time is short, and a remarkable improvement in the search effect can be realized.
Owner:SUZHOU SOUKE INFORMATION TECH

Training method and system of commodity personalized ranking model

The invention relates to a training method and system of a commodity personalized ranking model. The training method comprises the following steps: according to long-term interest characteristics in historical commodity data, carrying out off-line training on the commodity personalized ranking model, obtaining a parameter corresponding to each long-term interest characteristic, i.e. obtaining the commodity personalized ranking model with high precision, and eliminating short-term characteristics in the historical commodity data to reduce time consumption; and at a unit time interval, obtaining real-time commodity data, expanding the commodity personalized ranking model subjected to the off-line training, and carrying out on-line training on the expanded commodity personalized ranking model according to the long-term interest characteristics and the short-term characteristics in the real-time commodity data to obtain an updated parameter corresponding to each long-term interest characteristic and an updated parameter corresponding to each short-term interest characteristic. Therefore the expanded commodity personalized ranking model is updated for one time at the unit time interval to obtain the model with higher timeliness and realize the balance of the precision and the timeliness of the model so as to obtain a better prediction result.
Owner:唯品会(广州)软件有限公司

Outdoor scene rapid three-dimensional reconstruction device based on unmanned aerial vehicle image

ActiveCN112085845AQuasi-real-time 3D reconstructionStrong timeliness3D-image rendering3D modellingPoint cloudUncrewed vehicle
The invention discloses an outdoor scene rapid three-dimensional reconstruction device based on an unmanned aerial vehicle image. The outdoor scene rapid three-dimensional reconstruction device comprises an unmanned aerial vehicle module, a sparse point cloud construction module and a three-dimensional scene construction module. The unmanned aerial vehicle module comprises an unmanned aerial vehicle and an unmanned aerial vehicle ground station. The unmanned aerial vehicle carries a camera and a communication device. The sparse point cloud construction module extracts feature points in each grid region through an OpenMP multi-thread processing mechanism, and performs feature matching on adjacent images; the three-dimensional scene construction module fuses the depth maps to obtain dense point clouds of the image clusters, and performs grid reconstruction based on a multi-view geometric algorithm, and combines reconstruction results of the clusters to obtain a three-dimensional structure of the whole scene. According to the device, parallel grid type feature extraction is realized, so that the reconstruction speed is greatly increased; through point cloud partitioning and grid partitioning, the memory pressure is reduced, and the reconstruction speed is increased.
Owner:NAT INNOVATION INST OF DEFENSE TECH PLA ACAD OF MILITARY SCI

Route planning device and method

The invention provides a route planning device. The device comprises an information acquisition module, a road segment recognition module, an experience route extraction module, an experience route storage module, a route repairing module, a route verifying module and a route planning module, wherein the information acquisition module is used for acquiring floating car information periodically, each piece of floating car information comprises the logo, position, acquisition time and manned state information of a floating car, and the manned state information can be manned information or unmanned information; the road segment recognition module determines the road segment where the floating car is located according to the position in each piece of floating car information and correlates the determined road segment with each piece of floating car information; the experience route extraction module determines an experience route according to acquired information, and the experience route storage module stores the experience route in an experience route library; the route repairing module is used for repairing two discontinuous road segments in the experience route to enable all the road segments in the experience route to be continuous; the route verifying module is used for deleting repeated road segments, invalid road segments and encircling road segments in the experience route; the route planning module is used for planning the route for a user according to the experience route library.
Owner:SHENZHEN URBAN TRANSPORT PLANNING CENT

Method for identifying strokes of handwritten Chinese characters

The invention discloses a method for identifying the strokes of handwritten Chinese characters. The method comprises the specific steps of building the feature sets of standard strokes of Chinese character, position relationships and intersection relationships; recording the writing features of the strokes of handwritten Chinese characters, and building the feature set of the strokes of handwritten Chinese characters; separating the strokes of strokes type uniqueness, so as to be matched with the standard Chinese characters; building the externally covered rectangle of the handwritten Chinese characters, equally dividing the rectangle to a plurality of sublattices, determining the sublattice of each stroke, and matching the sublattices with the standard Chinese characters according to an absolute position relationship; extracting the strokes of the handwritten Chinese characters, and matching with the standard Chinese characters according to the intersection relations, wherein the strokes of the handwritten Chinese characters and the strokes with the defined corresponding relations have intersection characteristics; calculating the relative position relations of similar strokes, and matching with the standard Chinese characters according to the similarity of relative positions; and judging the comprehensive similarity on the rest of strokes, and finally completing the building of the corresponding relations of all strokes. According to the method provided by the invention, the corresponding relationships between the handwritten Chinese characters of the user and the standard Chinese characters can be built, so that the method has an important application value.
Owner:南京文木教育科技有限公司

Customer service repeated call treatment method based on cosine similarity text mining algorithm

The invention discloses a customer service repeated call treatment method based on a cosine similarity text mining algorithm. The customer service repeated call treatment method comprises the following steps of extracting a work order text of 95598, performing data cleaning and removing abnormal call IDs; performing pretreatment on the data, extracting work orders of the same call and constructing a repeated call work order text set; converting the text into the language which can be recognized by a computer, establishing a vector space model, and representing the text by utilizing a characteristic vector; using a vector taking weight of a characteristic item as a component to express the whole text, measuring the similarity among documents on the basis of included angle cosine of two vectors in a use space of the characteristic vector, extracting a repeated call work order of the similar content of the same user by utilizing hierarchical clustering, and performing an analysis on semantic features; timely recording the problem reflected by the repeated call work order, sending an order and tracking a record. The customer service repeated call treatment method disclosed by the invention replaces manual search of the repeated call work order, and can improve the operating rate.
Owner:国网山东省电力公司营销服务中心(计量中心) +2

Method for determining regional ionospheric layer delay

The invention discloses a method for determining regional ionospheric layer delay. The method includes: collecting data; firstly establishing a regional ionospheric second-order term model according to the collected regional ionospheric VTEC (vertical total electron content) data; establishing a VTEC second-order term model and a fusion model of a neural network; adopting the fusion model to calculate VTEC values of puncture points of other positions in this area. By the method, computed results of the regional ionospheric layer delay are high in precision, and CORS (continuous operational reference system) measured results are wide in application range. A large number of engineering example application result analysis shows that precision of the computed results by the method is improved by 40% as compared to that by the VTEC second-order term model. Ionospheric layer space activity rules are high in fitting degree and high in timeliness, and convenience in use is brought. The ionospheric layer space activity rules can be obtained through analyzing according to fitting results of the neutral network, the ionospheric layer delay in any point in the area can be rapidly corrected, transmission precision and stability of radio waves can be improved, and technical support for better service for CORS can be provided.
Owner:SOUTHEAST UNIV

Disaster monitoring and early warning system of expressway

The invention discloses a disaster monitoring and early warning system of an expressway. The system comprises a data acquisition module, a data verification module, a data conversion module, a data classification module, a threshold module and a shape changing module. The data acquisition module is used for acquiring all kinds of real-time data which affects the expressway disasters. The data verification module is used for carrying out format verification and data verification on the real-time data stored in all center servers according to data flows. The data conversion module is used for converting the data subjected to the format verification and data verification into standard data formats. The data classification module is used for classifying the converted standard data formats according to a coding rule. The threshold module is used for setting thresholds of all data which affects the expressway disasters. The shape changing module is used for comparing data flows in the threshold module and a classification database through a data loading module and displaying results in a report and thematic map manner. According to the invention, flexibility and timeliness of monitoringmeans are achieved; monitoring results are quite accurate and reliable; and disaster monitoring and prevention ability in expressway construction processes can be greatly improved.
Owner:SHAANXI SHUIHE PLOTTING INFORMATION CO LTD

Method and device for evaluating quality of rail transit wireless network as well as medium

ActiveCN108156626AQuality close to realityEvaluation sample is largeWireless communicationLongitudeEngineering
The invention provides a method and a device for evaluating quality of a rail transit wireless network as well as a medium. The method comprises the following steps of arranging a plurality of sampling points on a rail line, and acquiring longitude and latitude of each sampling point; segmenting the rail line according to a fixed-length segmentation mode to acquire a plurality of road section intervals, and coding each road section; determining coordinates of a cell switching point in a moving test process and a code of the road section interval to which the cell switching point belongs according to actual path measurement data of the rail line; acquiring S1MME interface signaling data of a full-quantity user, and recognizing a user taking the rail transit according to the S1MME interfacesignaling data; acquiring MR data of the user taking the rail transit; positioning the MR data of the user taking the rail transit to acquire the road section interval to which each piece of MR data reported when the user take the rail transit; and evaluating the network quality of the road section interval according to the MR data of each road section interval in order to automatically evaluate the quality of the whole rail transit line network.
Owner:重庆玖舆博泓科技有限公司

Vegetation classification method based on machine learning algorithm and multi-source remote sensing data fusion

The invention relates to the field of ecological environment monitoring, and discloses a vegetation classification method based on a machine learning algorithm and multi-source remote sensing data fusion, which is used for efficiently realizing identification and classification of vegetation types in a target area. The method comprises the following steps: acquiring a low-altitude remote sensing image of terrestrial plants in a sample area by using an unmanned aerial vehicle, and acquiring a digital orthoimage and a digital surface model of the sample area based on the low-altitude remote sensing image; extracting elevation information of the digital surface model; acquiring an SAR image of a sample region corresponding to the aerial photography time of the unmanned aerial vehicle by utilizing satellite remote sensing; carrying out wave band and image fusion on the digital orthoimage, the elevation information and the SAR image; performing inversion model training and inversion model precision evaluation on the fused image through sample area actual measurement data and a machine learning algorithm to obtain an inversion model meeting requirements; and finally, classifying terrestrial plants in the target area based on the inversion model. The method is suitable for terrestrial plant ecological environment monitoring.
Owner:CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE

Equipment and method for testing high-speed tensile stress and strain of material

The invention discloses equipment for testing high-speed tensile stress and strain of a material. The equipment comprises a test sample, a high-speed tensile testing machine, a strain gauge, a light source, a high-speed camera and a controller, wherein the test sample is shaped like a dumbbell, the middle part thereof is a parallel section, the lower part thereof is an elastic section, and the parallel section is sprayed with speckles; the high-speed tensile testing machine is used for stretching the test sample; the strain gauge is stuck on the elastic section of the test sample; a strain meter is used for receiving data transmitted from the strain gauge; the light source is used for aligning a test part of the test sample so as to make the speckles sprayed on the surface of the test sample clearly visible; the high-speed camera is used for aligning the parallel section of the test sample; the controller is used for receiving data transmitted from the high-speed tensile testing machine, the high-speed camera and the strain meter, and drawing a stress-strain curve of the test sample. The invention further provides a method for testing the high-speed tensile stress and strain of thematerial. Through the equipment and the method, the problem of oscillation of the stress-strain curve of the material under a high strain rate can be effectively solved, so that a test result becomesaccurate.
Owner:武汉钢铁有限公司

Important writing characteristic tagging-based handwritten Chinese character neatness evaluation method

The invention discloses an important writing characteristic tagging-based handwritten Chinese character neatness evaluation method. The specific steps include: establishing a Chinese character template library containing importance writing characteristic tagging; recording handwritten Chinese character writing track point set data of a user, and preprocessing the acquired data; obtaining importance tagging writing characteristics of three levels of entire characters, parts and strokes of handwritten Chinese characters of the user; performing matching analysis on the obtained writing characteristics and template characters, so as to obtain a difference relation; and identifying the grade of problems existing in the handwritten Chinese characters of the user according to the obtained difference relation, and performing neatness evaluation on the grade of the problem existing in the handwritten Chinese character of the user according to the grade. The important writing characteristic tagging-based handwritten Chinese character neatness evaluation method provided by the invention can be used for judging whether the handwritten Chinese character writing of the user is neat, and has extremely import significance and value in application of judging handwritten Chinese character writing quality and performing individual guidance of Chinese character writing.
Owner:NANJING NORMAL UNIVERSITY

User interface interaction method in camera real-time picture of intelligent touch screen equipment

InactiveCN105068748AMeet the creative needs of shootingMeet creative needsInput/output processes for data processingComputer graphics (images)Video processing
The invention belongs to the technical field of video processing, and provides a user interface interaction method in a camera real-time picture of intelligent touch screen equipment. The user interface interaction method comprises the following steps: when a user clicks a camera picture, detecting a current click area, displaying different prop effects in real time in the camera picture, wherein the position, the size and the direction of each prop keep exactly consistent with the positions, the sizes and the directions of the facial features of a face in the camera picture, and the props move along with the movement of the face; executing a corresponding operation by a user through the detection of a clicking area, a dragging distance and a slipping-off speed in a process that the user firstly clicks a camera picture interface and then successively drags and releases the camera picture interface; and if no faces are in the presence, adding a tag on a clicking position, or when the tag is in the presence, replacing a new tag, and ensuring that the user can immediately see an effect of the tag in the camera picture. User operation efficiency and instantaneity are greatly improved, the originality requirements of short video shooting are met, and an operation threshold of general video tool software is obviously lowered.
Owner:SHANGHAI YINGSUI NETWORK TECH

Method for quantitatively determining content of various types of heavy metal in fly ash by adopting XRF (X-ray Fluorescence) instrument

The invention provides a method for quantitatively determining the content of various types of heavy metal in fly ash by adopting an XRF (X-ray Fluorescence) instrument. The method comprises the following steps: 1) collecting the fly ash as a sample to be detected; 2) taking a fly ash standard sample and adding a substrate substance to prepare a series of fly ash standard test samples containing lead, chromium, copper, zinc, arsenic, cesium, cadmium and barium elements with different concentrations; 3) detecting the sample to be detected and the fly ash standard test samples by adopting an X-ray fluorescence spectrometer respectively; carrying out quantification by adopting a standard curve method to obtain the content of the lead, chromium, copper, zinc, arsenic, cesium, cadmium and barium elements in the sample to be detected. According to the method for quantitatively determining the content of various types of the heavy metal in the fly ash by adopting the XRF (X-ray Fluorescence)instrument, provided by the invention, the disadvantages of digestion pre-treatment and ICP-OES detection of an existing fly ash detection technology can be overcome; accurate and rapid quantitative determination of the content of various types of the heavy metal in the fly ash is realized.
Owner:SHANGHAI ENVIRONMENTAL & SANITARY ENG DESIGN INST CO LTD +1
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