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214 results about "Basic knowledge" patented technology

Virtuality-reality head-mounted display equipment distortion parameter measuring method

The invention discloses a virtuality-reality head-mounted display equipment distortion parameter measuring method. According to the method, a screen is made to output a formwork drawing having a coordinate system, and a virtual image is captured by employing a camera instead of eyes; an image shot by the camera is processed through image processing software so as to correct self distortion of the camera, and a corresponding coordinate is extracted; through sampling a coordinate position of an original formwork drawing and a distorted coordinate position after lens imaging, a distortion parameter of certain single-color light is figured out; the screen is made to sequentially output coordinate formwork drawings of R, G and B three colors, the previous steps are repeated, and each distortion parameter of R, G and B is acquired. Through the method, on the basis of an actual imaging state of VR head-mounted display equipment, the virtual image is captured by employing the camera instead of the eyes, repeated debugging of the parameter can be avoided, moreover, developers are not required to have basic knowledge of optical design, so reliability or operation difficulty is better than a method determining the distortion parameter through theoretical simulation.
Owner:NANJING RUIYUE INFORMATION TECH

Knowledge graph construction method based on knowledge point connection relation

PendingCN107784088ARealize leak checking and fillingRealize the effect of drawing inferences about other cases from one instanceSpecial data processing applicationsBasic knowledgePath length
The invention provides a knowledge graph construction method based on a knowledge point connection relation and belongs to the field of education and learning. The method comprises steps as follows: acquiring meta-knowledge points, and establishing a knowledge point database comprising the meta-knowledge points; selecting the meta-knowledge points according to content characterizing teaching knowledge points and a basic knowledge point combination having dependence relationships with the meta-knowledge points; determining path length of each meta-knowledge point, relative to a first meta-knowledge point, in the basic knowledge point combination; constructing the knowledge graph according to the dependence level and the path length. On the basis of the content, a net-like relationship graphcontaining the dependence relationships and path length values corresponding to the dependence relationships is drawn, then the knowledge graph is obtained, the meta-knowledge point with the highestcorrelation with the first meta-knowledge point can be determined at any time in the learning process, so that effects of making up the deficiencies and drawing inferences are achieved in the learningprocess, the probability of occurrence of learning blind areas is reduced, and finally, effectiveness of learning is enhanced.
Owner:杭州博世数据网络有限公司

Electric power control system with simulation training function, and simulation training method thereof

The invention relates to an electric power control system with simulation training function, and a simulation training method thereof. The system comprises a control host and controllers installed on electric power devices. The controllers are electrically connected with the control host; the control host is internally provided with an accident processing module, a daily operation module, and a basic knowledge and electric power equipment preventive experiment module. The method comprises the following steps: performing accurate three-dimensional modeling on the electric power devices in all transformer station chambers; performing format conversion on generated models, and then performing DOF node and LOD special efficacy node arrangement; rendering the models, and constructing scenes; representing the change of the states of the electric power devices by use of a texture switching technology; and determining and displaying fault situations of the electric power devices by use of knowledge rules in an expert knowledge base. Compared to the prior art, the system and the method, provided by the invention have the advantages of real-time performance, reduced work load of workers, simulation of power network accidents, convenient operation, and the like.
Owner:TONGJI UNIV

Electricity usage trend abnormity suspicion analysis method and anti-electric-larceny monitoring system

InactiveCN105203924ARaise the level of credibilitySolve the problem of data asymmetryData processing applicationsFault locationBasic knowledgeElectricity
The invention discloses an electricity usage trend abnormity suspicion analysis method and an anti-electric-larceny monitoring system. The method includes the steps of electricity usage information state estimation, electricity usage abnormity suspicion analysis of low-voltage public transformer platform regions, suspect user filtering and positioning and key suspect user monitoring, and an anti-electric-larceny knowledge base is involved in the method. The step of electricity usage information state estimation is used for dealing with abnormities and deficiency of electric energy collection readings, asymmetry of standing book information and other abnormities. The step of electricity usage abnormity suspicion analysis of the low-voltage public transformer platform regions is used for analyzing electricity usage abnormities of users in the low-voltage public transformer platform regions. The step of suspect user filtering and positioning is used for filtering out suspect electric quantity major users and positioning the suspect major users. The step of key suspect user monitoring is used for tracking electricity usage abnormity users. The anti-electric-larceny knowledge base is used for accumulating anti-electric-larceny basic knowledge. The method is used for achieving the ultimate purposes of automatically positioning the suspect users by analyzing the electricity usage abnormities of the users in the low-voltage public transformer platform regions, forming a checking name list, lowering the technical analysis intensity of anti-electric-larceny staff and improving analysis efficiency.
Owner:SHANGHAI PROINVENT INFORMATION TECH

Crawler-based knowledge graph processing method and device, computer equipment and storage medium

The invention relates to the field of data acquisition. Specifically, a knowledge graph is constructed by using a data crawling mode. The invention further discloses a crawler-based knowledge graph processing method and device, computer equipment and a storage medium. The method comprises the following steps of crawling data information in webpage information by utilizing a crawler system; performing data cleaning on the crawled data information; performing information completion on the crawled data information subjected to data cleaning; target information, and performing feature extraction on the target information, constructing a relationship classification model according to the extracted feature information, obtaining a series of relationship entity pair data from the data informationby using the relationship classification model, and storing the relationship entity pair as a basic knowledge carrier of the knowledge graph to complete the construction of the processing knowledge graph. By means of the mode, the information can be rapidly obtained, the working efficiency can be greatly improved, and knowledge provided by the knowledge graph is beneficial for better understanding information content and carrying out information public opinion analysis.
Owner:PING AN TECH (SHENZHEN) CO LTD

Software project knowledge graph automatic construction method and system

The invention relates to a software project knowledge graph automatic construction method and system. The method comprises the steps of (1) analyzing original software resource data to obtain basic knowledge entities and entity relationships of a software project, and storing the basic knowledge entities and the entity relationships in a graph database in vertex and edge forms; 2) based on the existing basic knowledge entities and the entity relationships, establishing new relationships between the entities by adopting a knowledge abstraction method, and/or adding new basic knowledge entitiesand entity relationships into a knowledge graph, and storing the new basic knowledge entities and entity relationships in the graph database in the vertex and edge forms; and 3) selecting part or allof the basic knowledge entities and the entity relationships to form the knowledge graph of the software project. Each software resource data analysis method and each knowledge abstraction method areexistent in a plug-in form; and required plug-ins are selected and run to generate the knowledge graph of the software project. The problem of extraction and organization of domain-specific knowledgein multi-source heterogeneous software resources is solved; the application range is wide; and the expandability is high.
Owner:PEKING UNIV

Magic cube solving device capable of performing three-dimensional simulation

The invention discloses a magic cube solving device capable of performing three-dimensional simulation. The magic cube solving device comprises a base, support columns, mounting plates, a camera and a controller, wherein the support columns are arranged on both sides of the base; one mounting plate is arranged between the support columns on both sides and the base respectively; the two mounting plates are arranged oppositely, and form angles being 45 degrees with the horizontal plane; manipulator mechanisms for grabbing a fixed magic cube are arranged on the two mounting plates; the camera is arranged on the top of the support column on one side; the camera faces the magic cube; the controller is arranged on the base; the controller is used for controlling the manipulator mechanisms on the two mounting plates and the camera respectively. The magic cube solving device can be used for simulating the three-dimensional movement of the magic cube, is simple and effective in structure, is low in cost, contributes to product commercialization, can be applied to teaching, and contributes to teaching popularization; on the aspect of teaching, the comprehension of electromechanical system simulation and control basic knowledge can be improved, and the participation enthusiasm is enhanced.
Owner:ZHEJIANG UNIV

Social media sentiment classification method and device based on knowledge graph

ActiveCN111538835AEmbedded preciselyImprove embedding accuracyNatural language data processingNeural architecturesBasic knowledgeSocial media
The invention discloses a social media sentiment classification method and device based on a knowledge graph. The method comprises: firstly, based on construction of a basic knowledge graph, carryingout emotion entity positioning and emotion polarity labeling on entities in the basic knowledge graph in combination with an emotion dictionary, and constructing an emotion knowledge graph suitable for social media emotion classification tasks; then, using a GAN neural network model for improving the vector embedding precision of entities and entity relationships; training word vectors by using aCBOW model, and performing sentiment word vector training by using entity attributes in the knowledge graph; and finally, based on a Bi-LSTM multi-feature fusion sentiment classification strategy, fusing a general word vector, an entity vector and a sentiment word vector to the vocabulary input vector to improve the processing performance and precision of the sentiment classification method in thesocial media application. The method and device can effectively solve the common problems of low precision, complex operation and the like of a traditional sentiment classification method, and can bequickly and flexibly applied to social media sentiment classification.
Owner:SOUTHEAST UNIV

Swing follower cam-gear train combination teaching aid

The invention discloses a swing follower cam-gear train combination teaching aid. The motion rule knowledge points of swing followers of a cam mechanism, a counter-rotating method of the cam mechanism, and the conversion frame principle of transmission ratio calculation in an epicyclic gear train are teaching difficult points, yet most students cannot completely understand principles and basic knowledge points. The teaching aid comprises a general support, a driving conversion device, a driving wheel train mechanism, a planetary gear train mechanism and a cam assembly. The driving conversion device manually or electrically drives the driving wheel train mechanism and the planetary gear train mechanism; and the motion and the counter-rotating method of the cam assembly are realized through the planetary gear train mechanism. According to the invention, the motion rules of swing followers of different types can be demonstrated, the head shapes of the swing followers can be converted, basic circles and theoretical profiles are extensible, cam turn angles are readable, the displacement of the swing followers is readable, the motion rules are displayed, the counter-rotating methods of the cam mechanism of the swing followers and the knowledge point of the conversion frame principle of the transmission ratio calculation of the epicyclic gear train can be demonstrated.
Owner:HANGZHOU DIANZI UNIV

Architectural decoration configuration device and method based on computer

InactiveCN106055819ASolve the problem of serious fragmentation of decoration knowledgeOffice automationBuying/selling/leasing transactionsBasic knowledgeCustomer relationship management
The invention discloses an architectural decoration configuration device and method based on a computer. The invention provides a technical scheme capable of achieving one-stop solving for a computer information system and a website thereof for architectural decoration design, construction, project management, material purchase and customer service. The decoration configuration device comprises an input decoration style configuration device, a decoration function configuration device, a decoration project list configuration device, a project monitoring device, a decorative material matching device, a customer relationship management device, an information database of these devices, and an information input-output device. The architectural decoration configuration device particularly has the following technical features: the decoration style configuration device, the decoration function configuration device, the decoration project list configuration device, the project monitoring device, the decorative material matching device, and the customer relationship management device are correlative. The invention may enable every decoration and fitment participant to solve decoration basic knowledge popularization problems by virtue of the computer information system or / and the website thereof set up by the technical scheme, and perfectly combine the basic knowledge with commercial activities.
Owner:湖南鸿扬家网电子商务有限公司
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