50 results about "Column model" patented technology

The present disclosure relates to an operating method for a cross-language machine reading comprehension task, and a natural language processing system. The method comprises: acquiring target language training data corresponding to source language training data; constructing a parallel language pair for training; feeding the parallel language pair to a two-column model constructed on the basis of a pre-trained language model, and using a reverse propagation algorithm for training, the two-column model comprising a source column and a target column, and by means of finding an answer fragment semantically similar to a source language output answer outputted by the source column from the context information given by the target column, calibrating the answer fragment outputted by the target column. The present disclosure uses an attention mechanism to skillfully transfer an answer fragment of a source language to an answer output space of a target language; and a cross-attention block is refined by means of gradient decoupling knowledge sharing technology. In addition, transportability across languages is improved by means of enabling the model to learn semantic alignment from multiple granularities and calibrating the model output under the guidance of a teacher.

The invention relates to an on-site lofting method based on a lofting robot, which comprises the following steps: step 1, pasting a plurality of checkerboard targets on a civil engineering structure to be lofted, and measuring the center coordinates of the checkerboard targets; performing three-dimensional scanning on the civil engineering structure to obtain point cloud data of the civil engineering structure; 2, splicing to form a point cloud model, and matching the center coordinate of the checkerboard target with the coordinate system of the point cloud model; 3, a field wall column model is generated through BIM software fitting, and the wall column model obtained through fitting and the decoration design model are integrated and compared; the decorative wall column facing is adjusted according to the comparison result, and the structure protruding out of the decorative finished face is optimized; step 4, on the basis of Rhino and Grasshopper parameterization design platform, generating all target measuring and releasing point positions, and outputting a pay-off diagram; and 5, importing the pay-off diagram into a lofting robot, and printing marks. According to the method, the lofting efficiency and precision are improved, the decorative wall column facing is adjusted, and reworking and modification in the construction process are reduced.

The invention discloses a building method of a plant column BIM model and related equipment, relates to the technical field of constructional engineering, and mainly aims at solving the problems that traditional plant column modeling is low in precision, poor in efficiency and insufficient in standardization. The method comprises the following steps: establishing a data table based on structural design parameters of plant columns; creating an initial plant column model based on the parameterized component library of the metric conventional model; and establishing a mapping relationship between the data table and the initial plant column model through a logical relationship statement to construct a target plant column model. The method is used for the building process of the plant column BIM model.

Techniques are disclosed for predicting a table column using machine learning. For example, a system can include at least one processing device including a processor coupled to a memory, the processing device being configured to implement the following: determining a local word density for words in a table, the local word density measuring a count of other words in a first region surrounding the words; determining a local numeric density for the words, the local numeric density measuring a proportion of digits in a second region surrounding the words; determining semantic associations for the words by processing the words using an ML-based semantic association model trained based on surrounding words in nearby table columns and rows; and predicting a table column index for the words by processing the table using an ML-based table column model trained based on the local word density, local numeric density, and semantic association.

The invention provides an off-line programming spraying path generation method and device, electronic equipment and a storage medium, and is applied to a terminal.The method comprises the steps that a spraying mechanism model, a spraying tool model and a target workpiece model are constructed, and spraying process parameters are obtained, the spraying model comprises a spraying robot model, a connecting column model and a guide rail model extending in the left-right direction; a target spraying mode is selected, the terminal displays a spraying track parameter setting interface corresponding to the target spraying mode, spraying track parameters input by a user in the spraying track parameter setting interface are obtained, and a target spraying track is generated; and based on the target spraying track, a spraying tool model is used for conducting spraying simulation on a target workpiece model. In the embodiment provided by the invention, the spraying robot model, the connecting column model and the guide rail model extending in the left-right direction are constructed, so that the spraying robot model can move left and right along the guide rail model and move up and down along the connecting column model, the thickness of a simulated paint film is more uniform, and the simulated spraying effect is more attractive.

A computer-implemented method includes receiving input data that is organized into a set of rows and a set of columns. The method includes maintaining a machine learning header model that is trained on tabular data with header rows. The method includes supplying the input data as input to the machine learning header model to generate header row identification data that identifies a set of header rows that is a subset of the set of rows. The method includes maintaining a machine learning column model that is trained on tabular data. The method includes supplying the header row identification data and features of the input data to the machine learning column model to generate column label data that applies a set of defined labels to the set of columns. The method includes generating output data that is organized into rows and columns.

The invention relates to the technical field of ships, in particular to a helicopter mooring seat design method which comprises the following steps: S1, analyzing mechanical properties of materials of a conventional mooring seat structure to obtain replaceable new materials; s2, optimizing the structure of the mooring seat, designing a ball disc into a hollow column model, thickening a panel model to a set thickness, forming four open holes in the panel model at intervals, enabling the middle part of the panel model to be cross-shaped, and assembling the panel model and the hollow column model to form a mooring seat model; s3, checking the strength of the mooring seat model, and optimizing the mooring seat model; s4, a hollow column and a panel are manufactured through the optimized mooring seat model, the panel is welded to the hollow column, and a mooring seat body is formed at the position, located at an opening of the hollow column, of the panel; and S5, carrying out a fracture test and a tension test on the mooring seat body. According to the invention, the manufacturing difficulty can be reduced, the manufacturing cost can be reduced, and the requirement of equipment on a ship is met.

The invention provides an automatic parking method and device, electronic equipment and a vehicle, and the method comprises the steps: obtaining an all-round view image and distance data of the vehicle in the automatic driving process of the vehicle; according to the distance data, screening out a cylinder obstacle in the surround view image; determining an included angle between a cylinder axis of the cylinder obstacle and a parking space central axis of the target parking space, and a circle center coordinate and a radius in a vehicle coordinate system; according to the included angle, the circle center coordinate and the radius, a solid column model of the column obstacle in the current environment is constructed, and a safety envelope column model is constructed based on the solid column model and a preset safety distance expansion rule; performing transverse correction and longitudinal correction on the original parking area of the target parking space according to the safety envelope column model to obtain an effective area of the parking space; and controlling the vehicle to be parked in the effective area of the parking space. Accurate automatic parking of the vehicle can be achieved, and the vehicle rubbing risk is reduced.

To provide a torsion response prediction method and a torsion response prediction device capable of easily evaluating torsion response caused by foundation input motion of a building located on irregular ground.SOLUTION: Calculating respective impedance ratios α γ = (γ 1 * Vs1) / (γ 2 * Vs2) of the stratum structures 1 and 2, where Vs1 and Vs2 are respective shear wave velocities of the stratum structures 1 and 2, and γ 1 and γ 2 are respective wet densities of the stratum structures 1 and 2, and calculating an area ratio β = A1 / (A2 + 2A1) from respective basic cross-sectional areas A1 and A2 of the stratum structures 1 and 2; A response analysis of a one dimensional soil column model is performed with respect to each of the layer structures 1 and 2, maximum displacements D1 and D2 of the grounds of the layer structures 1 and 2 are calculated, a difference in ground displacement Δ D = D1 - D2 is obtained, and a rotation angle θ max of the building caused by a base input motion is calculated using the following equation θ max = = p * (Δ D·L) q·α γ / β using preset coefficients p and q with a base length L of the building.SELECTED DRAWING: Figure 2

To provide a multi-functional soil column model device and an application method.SOLUTION: There is provided a multi-functional soil column model device with which: a pushing plate is made to come closer to a soil layer in a lower direction through extension of an electrically-driven push rod and one end of a rope is connected to a fixation plate, so that a rope disc releases the rope to generate rotation; a rotating shaft drives a cum to rotate and to generate a push-out motion between the cum and a pulley to make a first spring together with a fixation piece reciprocally vibrate, and the fixation piece makes a disc with a screw together with the pushing plate reciprocally vibrate through a second spring; and the pushing plate drives downward to hold a vibration state to be made contact with the soil layer and to carry out compaction work as continuing vibration to improve compaction quality of the soil layer, which simulates a road base soil layer better.SELECTED DRAWING: Figure 1

1. The name of the product of this design: packaging bottle (43g Roman column style). 2. Purpose of this design product: used as outer packaging bottle for food. 3. The design key point of this appearance design product lies in the combination of shape and pattern. 4. The picture or photo that best illustrates the design points: three-dimensional picture. 5. Other situations that need to be explained Other explanations: The yellow liquid in the bottle in each view is the filling liquid and does not fall within the protection scope of this design product.

The invention belongs to a sample generation method, and provides a physical simulation sample generation method for power transmission line icing defects and a related device for solving the technical problems that an existing method for generating power transmission line icing samples in a simulation mode is insufficient in authenticity, diversity and high efficiency. Calculating an icing defect generation path of the power transmission line, performing parameterization generation on an ice column model, determining an attachment position of an ice column generated by parameterization on the power transmission line in combination with a probability density field and inverse transformation sampling, enabling the ice column to present a windward deflection form, and enabling the ice column to be attached to the icing defect generation path of the power transmission line, the method obtains the icing defect virtual scene, converts the icing defect virtual scene into available sample data, and is of great significance in improving the icing defect early warning capability of a power system and guaranteeing safe and stable operation of a power grid.

A full-balance vertical ship lift accurate parking position test model comprises lock head models, the lock head models are located on the two sides of a ship chamber model, tower column models are fixed to the outer sides of the ship chamber model, balance weight systems are installed on the tower column models, and the ship chamber model keeps balance through the balance weight systems; a gear and rack mechanism is installed between the tower column model and the ship chamber model, a synchronizing shaft system is installed on the ship chamber model, and the ship chamber model is driven by the gear and rack mechanism and the synchronizing shaft system to ascend and descend. According to the accurate parking test model for the full-balance vertical ship lift, the operation stability can be improved.

The present invention provides a stress analysis method and system for large-span lattice shell column deviation based on VR technology, which belongs to the field of building construction technology and includes the following steps: S1, using 3D3SV14 technology to establish a large-span lattice shell column model according to a construction plan, and using beam units to simulate reinforced steel columns and roof steel components; S2, using structural analysis software to analyze the stress analysis of large-span lattice shell column deviation; S3, importing the 3D3SV14 model and structural analysis results into VR software, and collecting the construction environment around the lattice shell structure; S4, using VR software to build a virtual scene of the lattice shell column model, and the staff can view and analyze the structural model in the virtual space through VR equipment, allowing the staff to adjust parameters in the VR environment. The problem that the stress condition of the lattice shell column deviation is not analyzed, resulting in the overall structural instability of the lattice shell structure and unclear deviation values ​​is solved.

The present invention discloses an arc additive manufacturing boss column and a manufacturing method thereof, and belongs to the field of additive manufacturing technology. The manufacturing method comprises the following steps: S01, boss column model design; S02, wire material selection; S03, additive preparation; S04, calculation of process parameters; S05, wire feeding path planning; S06, additive process, and finally forming a three-dimensional entity of the boss column. The material utilization rate of the present invention is extremely high, and materials are added only where needed, which greatly improves the material utilization rate, reduces costs, and reduces pressure on the environment. The manufacturing efficiency of the present invention is amazing, and the manufacturing speed can reach a boss column in a few seconds, and the efficiency is improved by 60%-80%, which greatly meets the needs of large-scale production. The equipment of the present invention is highly flexible, and whether it is a simple cylindrical, square, or complex special-shaped structure, it can be easily realized, providing a broad space for the innovative design of products.

The invention relates to the field of building information model construction, and discloses a building rectangular structural column reinforcement cage parameterized modeling method, which comprises the steps of building a building information model, initializing a project environment through a user interface, reading geometric attributes and non-geometric attributes of a structural column model, and building a rectangular structural column reinforcement cage. Reinforcing bar information in the non-geometric attributes is converted into structured reinforcing bar data, a longitudinal bar model is established on the surface of the structural column according to the plane coordinates, the three-dimensional coordinates of binding points of each stirrup on the longitudinal bars are calculated at the same time according to a special-shaped stirrup circulating winding method, three-dimensional modeling of the stirrups is carried out according to the coordinates of the binding points, and the three-dimensional modeling of the stirrups is carried out. Building of a building rectangular structure column steel reinforcement framework model is completed; according to the method, the stirrup binding points are automatically calculated on the basis of the longitudinal bar coordinates by adopting a special-shaped stirrup circulating winding method, automatic processing is carried out by directly reading geometric attributes and non-geometric attributes of the model, the problems of manual intervention and data synchronization are solved, complex design rules are converted into algorithm logic, and intelligent and compliant modeling of the whole process is achieved.

The application discloses a lightning protection grounding design method and design system based on a BIM model, and belongs to the technical field of computer-aided design, and comprises the following steps: S1, a model family module is established; S2, basic parameters are acquired; S3, a lightning receptor belt model is generated by using a lightning receptor belt family, and a lightning receptor leg model is generated by using a lightning receptor leg family, and the lightning receptor leg model is arranged on the lightning receptor belt according to an input interval; S4, a horizontal grounding electrode model is generated by using a horizontal grounding electrode family, and a vertical grounding electrode model is generated by using a vertical grounding electrode family by picking up a horizontal grounding electrode; S5, a break connection card model and a connection body model between the break connection card and the horizontal grounding electrode are generated by using a break connection card family by picking up a structure column model and the horizontal grounding electrode model; S6, connection of lightning protection grounding related equipment is performed; S7, lightning protection grounding equipment marking is performed, and lightning protection grounding material tables in an Excel format are counted and exported; and S8, a lightning protection grounding topology diagram is generated.

The invention relates to a reinforcing and forming method for a photocuring 3D printing ceramic core, which comprises the following steps: additionally arranging an outer frame model on the periphery of a three-dimensional model of the ceramic core, and connecting the outer frame model with the side wall of the three-dimensional model through a plurality of connecting column models to construct an integrated reinforcing model; adding a printing support to the strengthened model; slicing the reinforced model added with the support to generate slice data required by photocuring printing; ceramic slurry is adopted, photo-curing 3D printing is conducted according to the slicing data, the ceramic core, the outer frame and the connecting columns are integrally formed, and a biscuit of the ceramic core is obtained; and the outer frame and the connecting columns in the biscuit are removed, and the ceramic core is subjected to cleaning, degreasing and sintering treatment. The outer frame model and the uniformly distributed connecting column models are additionally arranged on the periphery of the three-dimensional model of the ceramic core, so that the rigidity of a biscuit is enhanced, the biscuit is uniformly stressed in the pressing process, defects caused by swinging of the biscuit are avoided, and the quality is effectively improved.

The application relates to the field of building information model construction, and discloses a building rectangular structure column reinforcement framework parameterized modeling method, which comprises the following steps: establishing a building information model, initializing a project environment through a user interface, reading geometric properties and non-geometric properties of a structure column model, converting reinforcement information in the non-geometric properties into structured reinforcement data, establishing a longitudinal reinforcement model on the basis of the plane coordinates on the structure column surface, simultaneously calculating three-dimensional coordinates of a binding point of each stirrup on the longitudinal reinforcement according to a special-shaped stirrup cyclic winding method, and performing three-dimensional modeling of the stirrup according to the binding point coordinates to complete creation of a building rectangular structure column reinforcement framework model; the special-shaped stirrup cyclic winding method is adopted to automatically calculate the binding point of the stirrup based on the longitudinal reinforcement coordinates, and automatic processing is performed by directly reading the geometric properties and the non-geometric properties of the model, so that manual intervention and data synchronization problems are eliminated, complex design rules are converted into algorithm logic, and intelligent and compliance modeling of the whole process is realized.

The invention belongs to the technical field of hydraulic engineering model tests, and provides a lifting type pier foundation scouring all-terrain scanning monitoring device based on the acoustic principle. The lower portion of the acrylic stand column model is buried in the sand surface and is perpendicular to the sand surface, the acoustic sounding probe is fixed to the tail end of a cable through a clamp, the driving motor is meshed with the annular gear track through a driving gear to drive the carrying platform to move around the column, and the telescopic frame motor controls the rhombic telescopic frame to stretch out and draw back through thread transmission. The cable retracting motor controls the cable to retract and release through the fixed pulley block. According to the invention, a lifting system in which track type circular motion is combined with rhombic telescopic frame and cable cooperation is adopted, panoramic and multi-depth-layer three-dimensional scanning of the pile periphery scouring terrain is realized, the device has the characteristics of adjustable detection depth, high measurement precision and good stability, and an advanced test technical means is provided for research on a bridge foundation scouring mechanism.

The application belongs to the technical field of radio wave propagation prediction modeling and optimization, and discloses a construction method, system, device and terminal of an outdoor fast ray tracing model, 3D digital geometric information of an outdoor environment of a ray tracing model is imported, and initial input parameters of the ray tracing model are fixed; the input parameters are initialized, including a transmitting antenna operating frequency, a transmitting power, a transmitting and receiving antenna position and environmental electrical parameters; the ray tracing model is run, and field strength, power and multipath information of a prediction point are calculated. The application imports a column model into an outdoor ray tracing algorithm, and the column model has much fewer surface elements than a triangular surface element model, so that the calculation efficiency of the ray tracing algorithm is greatly improved. In a specific outdoor environment, compared with a ray tracing algorithm model based on a triangular surface element model, the ray tracing algorithm efficiency of the transformed column surface element model provided by the application is higher, and the modeling model of common software can be directly used.

The invention belongs to the technical field of building design, and discloses a design method of a small-turbulence ultrahigh in-hole supporting column capable of bearing ultra-high wind pressure. The method comprises the following steps: comparing steel consumption of a column model and a column-free model of a large-span section, and determining the layout position of a supporting column in a hole; a plurality of in-hole supporting column structures are selected according to the structural span; by setting the ultimate bearing capacity, comprehensive analysis is conducted on various in-hole bearing column structures, and the in-hole bearing column structure with the lowest steel consumption is selected; obtaining the resistance coefficient of each in-tunnel supporting column structure, and selecting the in-tunnel supporting column structure which has the minimum influence on the internal flow field of the wind tunnel; and combining the related characteristics of the in-tunnel supporting column structure with the lowest steel consumption and the in-tunnel supporting column structure with the lowest influence on the internal flow field of the wind tunnel to obtain an optimal in-tunnel supporting column. According to the invention, on the premise of ensuring that the air flow quality of the wind tunnel is not influenced, the span of the roof is reduced by additionally arranging the structural supporting columns in the tunnel body, the economical efficiency is optimized, and reference is provided for the design of the columns in the tunnel.

The present application belongs to the field of photovoltaic technology, and provides a kind of multi-point drive photovoltaic tracking system and design method, its method includes: the driving device close to the outer end of main shaft is segmented towards the outer end of main shaft of the main shaft, and the main shaft between two driving devices is segmented, to obtain the position of multiple preset segments;The torsion angle of the preset segment between driving device and the end of main shaft, and between adjacent two driving devices is calculated;According to the position of multiple preset segments, the main shaft and column model of multi-point drive photovoltaic tracking support is established, after inputting model parameters, the torsion angle corresponding to each preset segment, load parameter, finite element analysis is carried out, and stress ratio and support reaction force parameter are obtained.The present application proposes a kind of automatic modeling method for mechanical analysis of multi-point drive photovoltaic tracking system, generates stress ratio chart, support reaction force, calculation book and other files based on finite element analysis results, for quickly designing multi-point drive photovoltaic tracking support.

The invention discloses a machining method for a percutaneous Kamb in triangular puncture guide plate. The machining method comprises the steps that firstly, a digital model of the percutaneous Kamb in triangular puncture guide plate is established; 2, the guide plate model and the guide column model are exported in an STL format and imported into 3D printing slicing software for slicing processing, and a. Gcode file is generated; 3, printing a guide plate model and a guide column model by using a 3D printer and a polylactic acid material; and 4, combining the printed guide plate model and the guide column model to form the complete percutaneous Kamb in triangular puncture guide plate. The triangular puncture guide plate is printed through digital modeling and a 3D printing technology, so that the matching precision of the guide plate and a patient is improved, accurate puncture is performed by means of the triangular puncture guide plate, the puncture precision is improved, and the adaptability and success rate of an operation are improved; the use of the guide plate reduces dependence on experience and hand feeling of doctors in the operation process, operation errors can be reduced, and operation risks can be reduced.

This invention provides a turbine foundation design method based on PDMS, comprising the following steps: establishing a support platform model in a PDMS model based on the external dimensions of the upper components located at the top of the turbine unit, the support platform model being used to support the upper components; establishing a support column model based on the height of the lower components located below the upper components and the operating level elevation of the turbine unit, the support column model being used to support the support platform model; establishing an upper component model on the support platform model, and establishing a lower component model below the support platform model; adjusting the shape and dimensions of the support platform model and the support column model through collision checks; and determining the actual shape and dimensions of the turbine foundation based on the adjusted shape and dimensions of the support platform model and the support column model. The turbine foundation layout designed by this invention is reasonable and accurate.

The invention discloses a simulation test device and method for water inrush of a fault subsidence structure induced by mine water recharge, and relates to the technical field of mine water disaster prevention and control, the device comprises a mine water supply and regulation system, a water inrush simulation box and a real-time monitoring system, and an adjustable structure simulation system is arranged in the water inrush simulation box. Fault or collapse column models with different parameters can be constructed, confining pressure and temperature are applied through a rubber sleeve and a temperature control jacket, a deep stratum environment is simulated, a real-time monitoring system synchronously collects multi-field coupling data, and real-time judgment and early warning of four levels of risks of stability, evolution, criticality and water inrush are achieved based on grey correlation analysis and an improved Bayesian judgment algorithm. When the risk is upgraded, the system automatically regulates and controls the recharge parameters in a linkage mode, safe disposal is achieved, the whole process of activation water inrush of the structure induced by deep well recharge can be controllably reproduced, and effective indoor test means and data support are provided for risk evaluation and prevention and control strategy formulation of a recharge project.

The invention relates to a testing device for an impact test, in particular to a pier anti-collision testing device based on spring equivalent buffering and a using method, and aims to solve the problem that a large deviation exists between an existing method and engineering practice, and the pier anti-collision testing device based on spring equivalent buffering comprises a supporting platform. A reaction wall is arranged on the side of the supporting platform seat, and a high-speed camera is arranged on the front side; the device further comprises a structural column, a buffer assembly and an impact assembly. The structural column is arranged at the top of the supporting platform and connected with the reaction wall; the buffering assembly is slidably arranged on the top of the supporting platform and located on the same horizontal line with the structural column. The impact assembly is arranged on the top of the supporting platform and located on the same horizontal line with the buffering assembly. A distortion damage mode caused by free top of a traditional cantilever column model is avoided, the test result is closer to engineering practice, the initial speed and kinetic energy of the impact trolley can be accurately controlled, and the test requirements of different impact strengths are met.

The invention discloses a BIM (Building Information Modeling)-based special-shaped wall column steel bar structure modeling method. The method comprises the following steps: constructing a special-shaped wall column model by utilizing three-dimensional building design software; drawing a steel bar model on the special-shaped wall column model; the steel bar model is imported into a steel structure model, and steel bars, colliding with a core column, an embedded part and a steel beam of a steel structure, in the steel bar model are modified; the modified steel bar model is disassembled, the disassembling sequence is recorded, and the reverse sequence of the disassembling sequence serves as the steel bar installation sequence of the special-shaped wall column to guide construction of the steel bar structure of the special-shaped wall column. The problems that the steel bar structure of the special-shaped wall column is complex, the installation and construction efficiency is low, and the sample plate manufacturing amount is large are solved.

The present invention discloses a parametric staircase automatic design method and storage medium based on Revit and Dynamo. The method writes Dynamo scripts according to the design logic of the staircase, picks up the floor slab boundary (wall, beam boundary) as the starting boundary, terminal boundary, starting side and terminal side of the staircase, automatically designs and creates an entity platform model, an entity flight model, as well as a landing beam and landing column models, can adjust the width of the staircase well, the thickness of the platform, the number of staircase steps, the types of landing beams and columns, and the thickness of the staircase slab by itself, and finally imports it into Revit to complete the creation of the staircase, realizing the efficient automatic design and modeling of the staircase structure. The present invention operates on Revit and the visual programming software Dynamo, has good visualization effects, is convenient to modify, and improves work efficiency; moreover, the parametric staircase structure model created by the present invention realizes precise control of detailed parameters, providing a good BIM information model for subsequent designs.

The embodiment of the invention provides an electronic and electrical architecture evaluation method and device, equipment and a medium, and relates to the technical field of automotive electronics. The method comprises the steps that an evaluation model is obtained, the evaluation model comprises N hierarchies, and N is a positive integer; judging matrixes corresponding to N-1 levels of the evaluation model are constructed, the order of the judging matrixes is equal to the number of model elements of the corresponding levels, and items in the judging matrixes are importance scale values obtained by comparing row model elements and column model elements of the judging matrixes; and obtaining an evaluation result according to the feature vectors of the judgment matrixes corresponding to the N-1 hierarchies. Therefore, a qualitative evaluation standard is converted into a quantitative numerical value by utilizing the judgment matrix corresponding to the hierarchy in the evaluation model. By calculating the ratio of the model elements, the judgment matrix can reflect the relative importance and priority among different elements, so that the evaluation is more objective and accurate, and the reliability of the evaluation result is reflected.