CN115994405A - Urban information management platform construction method based on BIM technology - Google Patents

Urban information management platform construction method based on BIM technology Download PDF

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CN115994405A
CN115994405A CN202310293977.6A CN202310293977A CN115994405A CN 115994405 A CN115994405 A CN 115994405A CN 202310293977 A CN202310293977 A CN 202310293977A CN 115994405 A CN115994405 A CN 115994405A
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management platform
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CN115994405B (en
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候江涛
张军
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Zhongtu Holding Group Co ltd
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Hubei Zhongtu Survey Planning And Design Co ltd
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Abstract

The invention relates to a city information management platform construction method based on BIM technology, comprising the following steps: acquiring city introduction information to construct an introduction information database, and importing the introduction information database into a blank webpage to obtain a city front-end design webpage; obtaining urban geographic information, constructing a three-dimensional BIM model, and obtaining introduction information databases of different geographic areas of the three-dimensional BIM model; constructing a BIM database by using the introduction information database, and connecting the basic BIM database with the urban front-end design webpage to obtain a primary information management platform; acquiring an information modification suggestion, extracting core semantics of the information modification suggestion through a semantic extraction model, carrying out information supplementation on the basic BIM database according to the core semantics, and determining a primary information management platform after the information supplementation as a city information management platform. The invention can improve the accuracy of the urban information management platform for displaying the urban information.

Description

Urban information management platform construction method based on BIM technology
Technical Field
The invention relates to the technical field of artificial intelligence, in particular to a city information management platform construction method based on a BIM technology.
Background
With the progress of the emerging technology, the application of BIM technology in the construction of project platforms is gradually widened and in depth, and the rapid development of intelligent management is promoted. In order to improve the management strength of urban information, deepen the understanding of people on urban information and promote various developments of cities, a novel urban information management system is needed, and various information of cities can be displayed in more detail, accurately and directly.
The conventional urban information management platform generally uses a simple front-end design page, uses characters and pictures to carry out brief display on urban information, cannot enable people to be on the spot to know more about specific internal information of the urban, and is easy to understand errors of the urban information, so that the accuracy degree of information transmission is reduced.
Disclosure of Invention
The invention provides a building method of a city information management platform based on a BIM technology, which mainly aims to solve the problem of low information display accuracy of a city information management system.
In order to achieve the above object, the present invention provides a building method for a city information management platform based on a BIM technology, including:
acquiring preset city introduction information, classifying the city introduction information by using a preset information classification model to obtain an information tag, constructing an introduction information database according to the information tag and the city introduction information, and importing the introduction information database into a preset blank webpage to obtain a city front-end design webpage;
acquiring preset urban geographic information, constructing a three-dimensional BIM model according to the urban geographic information, dividing the three-dimensional BIM model according to geographic areas to obtain a divided three-dimensional BIM model, and acquiring area names of different geographic areas of the divided three-dimensional BIM model;
calculating the matching degree of the area name and the information label, determining the information label with the largest matching degree with the area name as a label to be transmitted, importing city introduction information corresponding to the label to be transmitted into a three-dimensional BIM model corresponding to the area name to obtain a basic BIM database, and connecting the basic BIM database with the city front end design webpage through a preset interface to obtain a primary information management platform;
acquiring information modification suggestions submitted by a user on the primary information management platform, extracting core semantics of the information modification suggestions through a preset semantic extraction model, carrying out information supplementation on the basic BIM database according to the core semantics, and determining the primary information management platform after information supplementation as an urban information management platform.
Optionally, the classifying the city introduction information by using a preset information classification model to obtain an information tag includes:
coding the introduction information to obtain the information code;
carrying out convolution and pooling treatment on the information code to obtain a low-dimensional feature code of the information code;
mapping the low-dimensional feature code to a pre-constructed high-dimensional space to obtain a high-dimensional feature code;
and screening the high-dimensional feature codes by using a preset activation function to obtain the information tag.
Optionally, the importing the introduction information database into a preset blank webpage to obtain a city front-end design webpage includes:
acquiring different database language rules corresponding to the database contents of the introduction information database by using a preset decision tree function;
expressing the database content with a database language according to the database language rule to obtain a database code;
and writing the database code into a preset blank webpage to obtain the urban front-end design webpage.
Optionally, the obtaining, by using a preset decision tree function, different database language rules corresponding to database contents of the introduction information database includes:
and acquiring different database language rules corresponding to the database contents of the introduction information database by using the following decision tree functions:
Figure SMS_1
wherein ,
Figure SMS_2
for the output value of said decision tree function, < >>
Figure SMS_3
For parameters of the decision tree function, +.>
Figure SMS_4
An input value for the decision model; acquiring different database language rules corresponding to the database contents of the introduction information database through the decision tree function;
when the output database language rule is
Figure SMS_5
That is, when the input value is smaller than the parameters of the decision tree function, the database language rule corresponding to the database content of the introduction information database is +.>
Figure SMS_6
When the output database language rule is
Figure SMS_7
That is, when the input value is larger than the parameter of the decision tree function, the database language rule corresponding to the database content of the introduction information database is +.>
Figure SMS_8
When the output database language rule is
Figure SMS_9
That is, when the input value is equal to the parameter of the decision tree function, the database language rule corresponding to the database content of the introduction information database is +.>
Figure SMS_10
Optionally, the constructing a three-dimensional BIM model according to the urban geographic information includes:
acquiring text word segmentation of the urban geographic information to obtain geographic word segmentation;
calculating word frequency of the geographic segmentation by using a preset word frequency calculation formula;
determining geographic segmentation words larger than a preset word frequency as key segmentation words, and searching three-dimensional data associated with the key segmentation words in the urban geographic information;
and constructing a three-dimensional BIM model by using a preset modeling tool according to the three-dimensional data.
Optionally, the calculating the word frequency of the geographic word by using a preset word frequency calculation formula includes:
counting the occurrence times of the geographic segmentation words and the total segmentation word number of the urban geographic information;
calculating word frequency of the geographic segmentation by using the following word frequency calculation formula:
Figure SMS_11
wherein ,
Figure SMS_12
word frequency for the geo-word, +.>
Figure SMS_13
For the occurrence number of the geo-segmentation, +.>
Figure SMS_14
And the total word number of the urban geographic information is obtained. />
Optionally, the calculating the matching degree of the area name and the information tag includes:
calculating the matching degree of the area name and the information label by using the following matching degree calculation formula:
Figure SMS_15
wherein ,
Figure SMS_16
for the degree of matching, +.>
Figure SMS_17
For the area name->
Figure SMS_18
Is the information tag.
Optionally, the basic BIM database is connected with the urban front-end design webpage through a preset interface to obtain a primary information management platform;
connecting the basic BIM database with a preset open database interface;
connecting the open database interface with a webpage interface of the urban front-end design webpage;
and determining the connected urban front-end design webpage as a primary information management platform.
Optionally, the extracting the core semantics of the information modification suggestion through a preset semantics extraction model includes:
converting the information modification suggestion into a vector to obtain a suggestion vector, and encoding the position of the suggestion vector to obtain a position code of the suggestion vector;
analyzing the position codes for a preset number of times by utilizing a self-attention machine module in the semantic extraction model to obtain a primary analysis structure;
and carrying out normalization calculation on the preliminary analysis result to obtain a normalization calculation result, and determining the normalization calculation result as the core semantic of the information modification suggestion.
Optionally, the encoding the position of the suggested vector to obtain a position code of the suggested vector includes:
encoding the position of the suggested vector using a position encoding function:
Figure SMS_19
Figure SMS_20
wherein ,
Figure SMS_21
representing even character positions in the suggestion vector, +.>
Figure SMS_22
Representing odd character positions in the suggestion vector, +.>
Figure SMS_23
Representing the sequence of positions of the characters in the suggestion vector, +.>
Figure SMS_24
Representing the->
Figure SMS_25
Dimension(s) (i.e.)>
Figure SMS_26
Representing the character encoding function.
According to the embodiment of the invention, the three-dimensional BIM model is constructed according to the preset urban geographic information by acquiring the preset urban geographic information, the three-dimensional BIM model is divided according to the geographic area, the divided three-dimensional BIM model is obtained, and the redundant urban geographic information is displayed in a visual mode, so that people are clear at a glance, and meanwhile, the subsequent construction of an urban information management platform with accurate information and simple and convenient operation is facilitated; establishing a basic BIM database, connecting the basic BIM database with the designed webpage at the front end of the city through a preset interface to obtain a primary information management platform, realizing the step of connecting the front end and the rear end, obtaining the primary information management platform, and inquiring the related information of the city in the primary information management platform; acquiring information modification suggestions submitted by a user on the primary information management platform, extracting core semantics of the information modification suggestions through a preset semantic extraction model, carrying out information supplementation on the basic BIM database according to the core semantics, determining the primary information management platform after information supplementation as a city information management platform, and continuously optimizing the primary information management platform of the user so as to pursue a better city information management platform. Therefore, the method and the device for constructing the urban information management platform based on the BIM technology can solve the problem of low information display accuracy of the urban information management platform.
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FIG. 1 is a schematic flow chart of a method for constructing a city information management platform based on BIM technology according to an embodiment of the invention;
fig. 2 is a schematic flow chart of acquiring an information tag according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating a method for obtaining a front-end design web page according to an embodiment of the present invention;
FIG. 4 is a flow chart of a three-dimensional BIM model construction according to an embodiment of the invention;
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The embodiment of the application provides a city information management platform construction method based on BIM technology. The execution subject of the building method of the city information management platform based on the BIM technology includes, but is not limited to, at least one of a server, a terminal and the like, which can be configured to execute the method provided by the embodiment of the application. In other words, the building method of the city information management platform based on the BIM technology may be performed by software or hardware installed in a terminal device or a server device, and the software may be a blockchain platform. The service end includes but is not limited to: a single server, a server cluster, a cloud server or a cloud server cluster, and the like. The server may be an independent server, or may be a cloud server that provides cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, content delivery networks (Content Delivery Network, CDN), and basic cloud computing services such as big data and artificial intelligence platforms.
Referring to fig. 1, a flow chart of a building method of a city information management platform based on a BIM technology according to an embodiment of the present invention is shown. In this embodiment, the method for constructing the city information management platform based on the BIM technology includes:
s1, acquiring preset city introduction information, classifying the city introduction information by using a preset information classification model to obtain an information tag, constructing an introduction information database according to the information tag and the city introduction information, and importing the introduction information database into a preset blank webpage to obtain a city front-end design webpage;
in the embodiment of the invention, the city introduction information comprises detailed information such as urban resident population, key industrial structures, historical humane introduction, special tourist attractions and the like. The city introduction information is used for introducing the city through characters, and the city is further known through the city introduction information.
In the embodiment of the present invention, referring to fig. 2, the classifying the city introduction information by using a preset information classification model to obtain an information tag includes:
s21, coding the introduction information to obtain the information code;
s22, carrying out convolution and pooling treatment on the information code to obtain a low-dimensional feature code of the information code;
s23, mapping the low-dimensional feature codes into a pre-constructed high-dimensional space to obtain high-dimensional feature codes;
s24, screening the high-dimensional feature codes by using a preset activation function to obtain an information tag.
Additionally, the information tag is actually a category tag corresponding to an information category, and may include personal information, medical information, public facility information, scenic spot information, and the like.
In detail, the convolution and pooling processing are carried out on the information codes, so that the dimension of the information codes is reduced, the occupation of computer resources when the information codes are analyzed is further reduced, and the efficiency of acquiring the information labels is improved.
Specifically, the pre-constructed high-dimensional space for mapping the low-dimensional feature codes may map the low-dimensional feature codes to a preset high-dimensional space by using a mapping function of the information classification model, where the mapping function includes, but is not limited to, a Gaussian, radial, basis, function function, a gaussian function, etc. in a MATLAB library.
Additionally, the high-dimensional feature codes are filtered by using a preset activation function, wherein the activation function comprises, but is not limited to, a sigmoid activation function, a tanh activation function and a relu activation function.
In the embodiment of the present invention, the constructing an introduction information database according to the information tag and the city introduction information includes:
filling the information tag and the city introduction information into an electronic form to obtain an electronic information form;
and transmitting the electronic information table into preset database software to obtain an introduction information database.
The preset database software includes, but is not limited to, orancle, access, SQL Server, etc.
In detail, referring to fig. 3, the importing the introduction information database into a preset blank webpage to obtain a city front-end design webpage includes:
s31, acquiring different database language rules corresponding to the database contents of the introduction information database by using a preset decision tree function;
s32, expressing the database content with a database language according to the database language rule to obtain a database code;
and S33, writing the database code into a preset blank webpage to obtain the urban front-end design webpage.
In detail, the preset blank webpage can be a front-end template which is made in advance according to the information management webpage, only the appearance component is provided, and no specific content exists, so that a front-end and rear-end separation development mode can be used, the construction efficiency of the platform is improved, and the input time cost is reduced.
Further, the obtaining, by using a preset decision tree function, different database language rules corresponding to database contents of the introduction information database includes:
and acquiring different database language rules corresponding to the database contents of the introduction information database by using the following decision tree functions:
Figure SMS_27
wherein ,
Figure SMS_28
for the output value of said decision tree function, < >>
Figure SMS_29
For parameters of the decision tree function, +.>
Figure SMS_30
An input value for the decision model; acquiring different database language rules corresponding to the database contents of the introduction information database through the decision tree function;
when the output database language rule is
Figure SMS_31
That is, when the input value is smaller than the parameters of the decision tree function, the database language rule corresponding to the database content of the introduction information database is +.>
Figure SMS_32
When the output database language rule is
Figure SMS_33
That is, when the input value is larger than the parameter of the decision tree function, the database language rule corresponding to the database content of the introduction information database is +.>
Figure SMS_34
When the output database language rule is
Figure SMS_35
That is, when the input value is equal to the parameter of the decision tree function, the database language rule corresponding to the database content of the introduction information database is +.>
Figure SMS_36
In detail, different database language rules are screened out by utilizing the decision tree function, so that the time for converting the database language can be saved, the probability of screening errors can be reduced, and the accuracy, usability and high efficiency of the compiled database codes are ensured.
S2, acquiring preset urban geographic information, constructing a three-dimensional BIM model according to the urban geographic information, dividing the three-dimensional BIM model according to geographic areas to obtain a divided three-dimensional BIM model, and acquiring area names of different geographic areas of the divided three-dimensional BIM model;
in the embodiment of the invention, the urban geographic information comprises urban geographic positions, different areas in the city, main roads and subway trends, different areas of the different areas, urban landmark facilities and the like, for example, the landmark facilities in Shanghai include Oriental pearl, jinmao mansion, global financial center, shanghai Dishi paradise, shanghai central mansion and the like.
Further, the three-dimensional BIM model is constructed according to the urban geographic information, the urban map is actually displayed in front of a user in a 3D mode, the information is visualized to the greatest extent, the information displayed by a visualization means is displayed in a three-dimensional mode as much as possible, and the visual effect that the text information cannot be transmitted is achieved.
In an embodiment of the present invention, referring to fig. 4, the constructing a three-dimensional BIM model according to the urban geographic information includes:
s41, acquiring text segmentation of the urban geographic information to obtain geographic segmentation;
s42, calculating word frequency of the geographic segmentation by using a preset word frequency calculation formula;
s43, determining geographic segmentation words larger than a preset word frequency as key segmentation words, and searching three-dimensional data associated with the key segmentation words in the urban geographic information;
s44, building a three-dimensional BIM model by using a preset modeling tool according to the three-dimensional data.
Since geographic information of a city is usually spread around a certain keyword, for example, a specific floor area of a certain area, a road trend condition of a certain area, and the like. Therefore, the keyword of the geographic information is determined through word frequency calculation, and information can be supplemented around the keyword, so that an accurate three-dimensional BIM model is built.
In detail, the calculating the word frequency of the geographic word by using a preset word frequency calculation formula includes:
counting the occurrence times of the geographic segmentation words and the total segmentation word number of the urban geographic information;
calculating word frequency of the geographic segmentation by using the following word frequency calculation formula:
Figure SMS_37
wherein ,
Figure SMS_38
word frequency for the geo-word, +.>
Figure SMS_39
For the occurrence number of the geographic segmentation, theOccurrence number of geographical word, ++>
Figure SMS_40
And the total word number of the urban geographic information is obtained.
In detail, the searching the city geographic information for three-dimensional data associated with the keyword includes, but is not limited to, find a find function searching the city geographic information for three-dimensional data about the keyword.
Specifically, the three-dimensional data volume refers to a data volume with three-dimensional space coordinates (x, y, z) as a function of position. In the embodiment of the invention, the three-dimensional data are three-dimensional space coordinates of the total area of the city, three-dimensional space coordinates of the landmark information of each area of the city, and the like.
In detail, the three-dimensional BIM model can be accurately built only by acquiring the three-dimensional data, redundant urban geographic information is displayed in a visual mode, people can see the information at a glance, and meanwhile, an urban information management platform with accurate information and simple and convenient operation can be conveniently built later.
Additionally, the preset modeling tools include, but are not limited to Revit, archcad, rhinoceros, benlty, sketchup, and the like.
In the embodiment of the invention, the three-dimensional BIM model is divided according to the geographic area to obtain the divided three-dimensional BIM model, and because the three-dimensional BIM model is built according to the three-dimensional coordinates of the whole city, the modeling of the whole city is too large and detailed division is needed, so that the city is required to be divided according to units such as county or district, and the three-dimensional BIM model after division is obtained.
In detail, the obtained area names of different geographical areas of the divided three-dimensional BIM model may be named according to the original county or region of the city, or renamed in the three-dimensional BIM model, so as to distinguish different areas of the three-dimensional BIM model.
Specifically, the cost of building the city information management platform can be saved by building the three-dimensional BIM model, the specific information of the city can be displayed in more detail, and the common text and pictures are displayed in front of the eyes of the user by using the three-dimensional BIM model, so that the user can know the city information more accurately and intuitively, and the maintenance of an administrator is facilitated.
S3, calculating the matching degree of the area name and the information label, determining the information label with the largest matching degree with the area name as a label to be transmitted, importing city introduction information corresponding to the label to be transmitted into a three-dimensional BIM model corresponding to the area name to obtain a basic BIM database, and connecting the basic BIM database with the city front end design webpage through a preset interface to obtain a primary information management platform;
because the marking information is usually located in different areas, the area names and the information labels are inevitably matched with each other, so that the information after the information can be connected with the areas after the area labels by calculating the matching degree between the information labels and the area names, and the introduction information is filled into the three-dimensional BIM model corresponding to the area labels.
In the embodiment of the present invention, the calculating the matching degree between the area name and the information tag includes:
calculating the matching degree of the area name and the information label by using the following matching degree calculation formula:
Figure SMS_41
wherein ,
Figure SMS_42
for the degree of matching, +.>
Figure SMS_43
For the area name->
Figure SMS_44
Is the information tag.
In detail, the city introduction information corresponding to the tag to be transmitted is imported into the three-dimensional BIM model corresponding to the area name, so that the three-dimensional BIM model is more detailed and plump, and the city introduction information is more in line with the basic situation of city information.
In the embodiment of the invention, the basic BIM database is connected with the designed webpage at the front end of the city through a preset interface to obtain a primary information management platform;
connecting the basic BIM database with a preset open database interface;
connecting the open database interface with a webpage interface of the urban front-end design webpage;
and determining the connected urban front-end design webpage as a primary information management platform.
In detail, the preset open database interface is an open database connection, abbreviated as ODBC interface, which is a database access interface standard of a Windows environment for solving the problem of data sharing among heterogeneous databases, and is a unified interface provided by heterogeneous database access.
Specifically, the step of connecting the front end and the back end is realized by connecting the basic BIM database with the designed webpage at the front end of the city through a preset interface, a primary information management platform is obtained, and related information of the city can be queried in the primary information management platform.
S4, acquiring information modification suggestions submitted by a user on the primary information management platform, extracting core semantics of the information modification suggestions through a preset semantic extraction model, carrying out information supplementation on the basic BIM database according to the core semantics, and determining the primary information management platform after information supplementation as an urban information management platform.
Specifically, the self-correction capability of the web page is lacking only by connecting the basic BIM database with the designed web page at the front end of the city, and the advantages of quick missing and missing searching in the BIM technology cannot be exerted, so that the user primary information management platform needs to be continuously optimized to pursue a better city information management platform.
In the embodiment of the present invention, the extracting the core semantics of the information modification suggestion through a preset semantics extraction model includes:
converting the information modification suggestion into a vector to obtain a suggestion vector, and encoding the position of the suggestion vector to obtain a position code of the suggestion vector;
analyzing the position codes for a preset number of times by utilizing a self-attention machine module in the semantic extraction model to obtain a primary analysis structure;
and carrying out normalization calculation on the preliminary analysis result to obtain a normalization calculation result, and determining the normalization calculation result as the core semantic of the information modification suggestion.
In detail, the encoding the position of the suggested vector to obtain the position encoding of the suggested vector includes:
encoding the position of the suggested vector using a position encoding function:
Figure SMS_45
Figure SMS_46
wherein ,
Figure SMS_47
representing even character positions in the suggestion vector, +.>
Figure SMS_48
Representing odd character positions in the suggestion vector, +.>
Figure SMS_49
Representing the sequence of positions of the characters in the suggestion vector, +.>
Figure SMS_50
Representing the->
Figure SMS_51
Dimension(s) (i.e.)>
Figure SMS_52
Representing charactersAnd (5) a coding function.
In particular, the semantic extraction model includes, but is not limited to, a bert model, a Transform model, and the like.
Further, the self-attention machine module is used for processing data received by the input end of the model, and solving the problem that a plurality of related inputs cannot be connected. For example, in the embodiment of the present invention, the input suggested vectors have different sizes, and the calculated position codes have different sizes, so that the self-attention machine module can be used to connect the position codes that are not connected to form a network model that is related to each other.
In detail, the basic BIM database is supplemented with information according to the core semantics, for example, the core semantics are to adjust the size of an information model, and then the three-dimensional BIM model is adjusted in the basic BIM database according to the three-dimensional data of specific information provided by the core semantics.
Specifically, the primary information management platform cannot supplement or correct the content in the platform in real time, and the city information is not invariable, so that the primary information management platform needs to be continuously optimized according to the information modification suggestion to obtain the city information management platform.
Furthermore, the city information management platform built based on the BIM foundation not only saves resources, but also can better display specific information of the city, not only can bring clear visual and sensory experience to the user, but also can continuously optimize information modification suggestions of the mobile phone user, and is an efficient, feasible and detailed information management platform.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.
Finally, it should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention.

Claims (10)

1. A city information management platform construction method based on BIM technology is characterized by comprising the following steps:
acquiring preset city introduction information, classifying the city introduction information by using a preset information classification model to obtain an information tag, constructing an introduction information database according to the information tag and the city introduction information, and importing the introduction information database into a preset blank webpage to obtain a city front-end design webpage;
acquiring preset urban geographic information, constructing a three-dimensional BIM model according to the urban geographic information, dividing the three-dimensional BIM model according to geographic areas to obtain a divided three-dimensional BIM model, and acquiring area names of different geographic areas of the divided three-dimensional BIM model;
calculating the matching degree of the area name and the information label, determining the information label with the largest matching degree with the area name as a label to be transmitted, importing city introduction information corresponding to the label to be transmitted into a three-dimensional BIM model corresponding to the area name to obtain a basic BIM database, and connecting the basic BIM database with the city front end design webpage through a preset interface to obtain a primary information management platform;
acquiring information modification suggestions submitted by a user on the primary information management platform, extracting core semantics of the information modification suggestions through a preset semantic extraction model, carrying out information supplementation on the basic BIM database according to the core semantics, and determining the primary information management platform after information supplementation as an urban information management platform.
2. The building method of city information management platform based on BIM technology as claimed in claim 1, wherein the classifying the city introduction information using a preset information classification model to obtain an information tag includes:
coding the introduction information to obtain the information code;
carrying out convolution and pooling treatment on the information code to obtain a low-dimensional feature code of the information code;
mapping the low-dimensional feature code to a pre-constructed high-dimensional space to obtain a high-dimensional feature code;
and screening the high-dimensional feature codes by using a preset activation function to obtain the information tag.
3. The building method of city information management platform based on BIM technology as claimed in claim 1, wherein said importing said introduction information database into a preset blank web page to obtain a city front end design web page comprises:
acquiring different database language rules corresponding to the database contents of the introduction information database by using a preset decision tree function;
expressing the database content with a database language according to the database language rule to obtain a database code;
and writing the database code into a preset blank webpage to obtain the urban front-end design webpage.
4. The building method of city information management platform based on BIM technology according to claim 3, wherein the obtaining the different database language rules corresponding to the database contents of the introduction information database by using the preset decision tree function includes:
and acquiring different database language rules corresponding to the database contents of the introduction information database by using the following decision tree functions:
Figure QLYQS_1
wherein ,
Figure QLYQS_2
for the output value of said decision tree function, < >>
Figure QLYQS_3
For parameters of the decision tree function, +.>
Figure QLYQS_4
An input value for the decision model; acquiring different database language rules corresponding to the database contents of the introduction information database through the decision tree function; />
When the output database language rule is
Figure QLYQS_5
That is, when the input value is smaller than the parameters of the decision tree function, the database language rule corresponding to the database content of the introduction information database is +.>
Figure QLYQS_6
When the output database language rule is
Figure QLYQS_7
That is, when the input value is larger than the parameter of the decision tree function, the database language rule corresponding to the database content of the introduction information database is +.>
Figure QLYQS_8
When the output database language rule is
Figure QLYQS_9
That is, when the input value is equal to the parameter of the decision tree function, the database language rule corresponding to the database content of the introduction information database is +.>
Figure QLYQS_10
5. The building method of urban information management platform based on BIM technology according to claim 1, wherein the building of the three-dimensional BIM model according to the urban geographic information includes:
acquiring text word segmentation of the urban geographic information to obtain geographic word segmentation;
calculating word frequency of the geographic segmentation by using a preset word frequency calculation formula;
determining geographic segmentation words larger than a preset word frequency as key segmentation words, and searching three-dimensional data associated with the key segmentation words in the urban geographic information;
and constructing a three-dimensional BIM model by using a preset modeling tool according to the three-dimensional data.
6. The building method of city information management platform based on BIM technology as claimed in claim 5, wherein the calculating the word frequency of the geo-segmentation using a preset word frequency calculation formula includes:
counting the occurrence times of the geographic segmentation words and the total segmentation word number of the urban geographic information;
calculating word frequency of the geographic segmentation by using the following word frequency calculation formula:
Figure QLYQS_11
wherein ,
Figure QLYQS_12
word frequency for the geo-word, +.>
Figure QLYQS_13
For the occurrence number of the geo-segmentation, +.>
Figure QLYQS_14
And the total word number of the urban geographic information is obtained.
7. The building method of city information management platform based on BIM technology according to claim 1, wherein the calculating the matching degree of the area name and the information tag includes:
calculating the matching degree of the area name and the information label by using the following matching degree calculation formula:
Figure QLYQS_15
wherein ,
Figure QLYQS_16
for the degree of matching, +.>
Figure QLYQS_17
For the area name->
Figure QLYQS_18
Is the information tag.
8. The building method of urban information management platform based on BIM technology as claimed in claim 1, wherein said basic BIM database is connected with said urban front-end design web page through a preset interface to obtain a primary information management platform;
connecting the basic BIM database with a preset open database interface;
connecting the open database interface with a webpage interface of the urban front-end design webpage;
and determining the connected urban front-end design webpage as a primary information management platform.
9. The building method of urban information management platform based on BIM technology according to any one of claims 1 to 8, wherein the extracting the core semantics of the information modification suggestion through the preset semantics extraction model includes:
converting the information modification suggestion into a vector to obtain a suggestion vector, and encoding the position of the suggestion vector to obtain a position code of the suggestion vector;
analyzing the position codes for a preset number of times by utilizing a self-attention machine module in the semantic extraction model to obtain a primary analysis structure;
and carrying out normalization calculation on the preliminary analysis result to obtain a normalization calculation result, and determining the normalization calculation result as the core semantic of the information modification suggestion.
10. The building method of city information management platform based on BIM technology according to claim 9, wherein the encoding the position of the advice vector to obtain the position code of the advice vector includes:
encoding the position of the suggested vector using a position encoding function:
Figure QLYQS_19
Figure QLYQS_20
wherein ,
Figure QLYQS_21
representing even character positions in the suggestion vector, +.>
Figure QLYQS_22
Representing odd character positions in the suggestion vector, +.>
Figure QLYQS_23
Representing the sequence of positions of the characters in the suggestion vector, +.>
Figure QLYQS_24
Representing the->
Figure QLYQS_25
The dimensions of the two-dimensional space are,
Figure QLYQS_26
representing the character encoding function. />
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