Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a multi-dimensional science popularization guiding method based on space and theme, which can establish structured guiding contents according to space and theme dimensions, and return science popularization contents including basic contents and related contents such as background contents according to a spatial position relationship of science popularization points.
In order to achieve the purpose, the invention adopts the following technical scheme:
a multidimensional science popularization guide method based on space and theme comprises an intelligent terminal and a server which are communicated with each other, and is characterized by comprising the following steps:
1) The method comprises the steps of performing structured storage on the content of popular science points based on space and themes, and storing the storage data fields of the popular science points into a first field, a second field and a third field to a server, wherein the first field is used for meeting the requirement of description of basic content of the popular science points; the second type of field is used for meeting the requirement of spatial dimension experience, and storing popular science points and the geographical relative relationship between the popular science points by establishing a geographical space tree structure; the third type of field is used for meeting the requirement of the theme dimension, the third type of field defines different theme characteristics of the science popularization point, and a science popularization route can be generated according to the theme characteristics;
2) The intelligent terminal acquires current position information and periodically sends a popular science content request of the current position to the server;
3) After searching the nearest popular science point in the geographic space tree structure according to the current position information, the server returns the popular science content related to the popular science point to the cache device;
4) The intelligent terminal selects the theme characteristics, the server determines a popular science route at the popular science point according to the selected theme characteristics, and the cache device returns popular science contents to the intelligent terminal according to the popular science route;
5) The intelligent terminal timely presents the science popularization content in a presentation mode of space and theme interaction based on the real-time position of the user.
Preferably, step 1) establishes structured science popularization content, including the storage of the spatial position and spatial relationship of the second type field definition science popularization content; the third type of field defines the storage of the subject matter content and tour route.
Preferably, in step 3), the server searches for related popular science contents of the nearest popular science point by using a geographic data retrieval algorithm, wherein the geographic data retrieval algorithm searches for the nearest popular science point within a limited range based on the current position, and then searches for the contents of the related popular science points in the geospatial tree structure, the relevance of which to the popular science point is greater than a preset relevance value threshold.
The multi-dimensional science popularization guide method based on the space and the theme has the following advantages: 1. establishing structured navigation content according to space and subject dimension so as to meet the requirements of quick response of the content and multi-dimensional presentation of the content; 2. establishing a science popularization guide service mechanism, so that the intelligent terminal not only provides the content of a single science popularization point, but also contains the combined knowledge of related backgrounds and other science popularization points; by using the temporary storage of popular science contents and the efficient geographic retrieval method, the reference contents of other popular science points can be given to a user when introducing a popular science point, and the aim of quick response of the contents can be fulfilled; 3. in the navigation process, the contents of popular science points are positioned in real time and fed back according to the current position, and a multi-dimensional presentation mode provides clearer experience for a user; when a user goes to a series of science popularization points for exploration along a science popularization route, the method can provide background introduction about the area and scenic spots which are not planned in a scenic line on the way; when the user enters the coverage area of the popular science point, the navigation method provides the planning content of the scenic spot, including introduction contents such as text introduction and pictures.
Detailed Description
Preferred embodiments of this patent are described in further detail below with reference to the accompanying drawings.
A multi-dimensional navigation method based on space and theme as shown in fig. 1, comprising the following steps: 1) Based on space and theme popular point content storage, dividing storage data fields of popular points into a first field, a second field and a third field to be stored in a server, wherein the first field is used for meeting the requirement of basic content description of the popular points; the second field is used for meeting the requirement of spatial dimension experience and storing popular science points and the geographic relative relationship between the popular science points through a geographic space tree structure; the third field is used for meeting the requirement of the main body dimension, the third field defines different theme characteristics of the science popularization point, and a science popularization route can be generated according to the theme characteristics; 2) The intelligent terminal acquires current position information and periodically sends a popular science content request of the current position to the server; 3) After searching the nearest popular point in the geographic space tree structure according to the current position information, the server returns the popular content related to the popular point to the cache device; 4) The intelligent terminal selects the theme characteristics, the server determines a popular science route at the popular science point according to the selected theme characteristics, and the cache device returns popular science contents to the intelligent terminal according to the popular science route; 5) The intelligent terminal timely presents the science popularization content in a presentation mode of space and theme interaction based on the real-time position of the user. The presentation mode of interacting with space and theme in the step 5) refers to selecting a science popularization point based on the real-time position of the user, and selecting the science popularization content in the cache device according to the selected science popularization route at the science popularization point to present to the user in real time. The intelligent terminal can be a smart phone, a tablet computer or other wearable intelligent equipment.
In this embodiment, the first type field, the second type field, and the third type field in step 1) are respectively defined as: basic, location, and Classication. The contents storage structure of the popular points is shown in table 1.
The contents of table 1 are as follows:
in table 1, the description field of the Basic type contains nine description items. Wherein, title is used to describe popular science point name, creator is used to record content Creator, language is used to describe the Language used by the content, description includes a general popular science point Description and popular science descriptions describing different contents by different chapters, the organization of chapters can be arranged according to different periods or different angles, which provides users to know the interesting contents and the background information of popular science points. Publisher and Source are reference sources of content, and contibutor and Right record content providers and intellectual property rights to which they belong. The Identifier is used to identify the user.
The description field of the Location type includes four items of coding, coverage, address and poicare, wherein coding and Address respectively indicate longitude and latitude and Address of the popular point. The Coverage is used for describing the range size of the popular science point, and the PoiParent is a pointer pointing to a father node and used for establishing a geographical relative relationship between the popular science point and the popular science point;
the Classification Type comprises four items of Subject, type, format and Date, and different theme characteristics of the Subject point can be defined through the four items. Subject defines the Subject of the popular science point by three items of sightseeing, experience and science, type describes the Type of the popular science point by four items of landscape, people, events and products, and Format Type is related description, date is related age record of the popular science point. Navigation routes for different topics can be defined using the Classification category.
The geospatial tree storage structure in the step 1) is shown in fig. 2, one region is defined as a popular point, a plurality of small popular points are contained in the region, and PoiParent of the popular point is subjected to region association by using a spatial position relationship.
The contents of the popular science routes are stored as shown in table 2, and the specific contents of table 2 are as follows:
the popular science routes are used for linking associated popular science point contents according to interested topics and have a certain tour sequence. Seven data items are included in the popular route as listed in table 2, wherein Title and Description are descriptions of names and contents of the popular route, transmission Type is a suitable Visiting vehicle for the popular route, duration and Distance are Visiting time and Distance required for the route to be estimated, the controller is an creator of the popular route, and vising Sequence describes a route planning and Visiting Sequence of the popular route.
In the step 3), the server searches for the related popular science content of the nearest popular science point by using a geographic data retrieval algorithm, the geographic data retrieval algorithm searches for the nearest popular science point in a limited range based on the current position, and then searches for the content of the related popular science point in the geographic space tree structure, wherein the association degree of the related popular science point with the popular science point is greater than a preset association value threshold. The specific method comprises the following steps: the geographic data retrieval algorithm is used for searching a point which is closest to the current position in a storage structure of the spatial tree, the algorithm initially comprises two parameters curpos and root, the curpos is the longitude and latitude of the current position, the root is a root node of a certain tree structure, and for the convenience of calculation, the root node of the whole spatial tree is a null value. The popular science points at the top of the spatial tree are covered to a larger extent, such as a town or a historical park. The algorithm comprises two parts of findNaerestPoi and ZoomingPois: the findNaearestaPoi program sets a predetermined search range threshold to limit the search range, and the science popularization point too far is not meaningful for the search result. After finding the nearest popular point, the ZoomingPOIs algorithm finds the parent node r of the point 0 In 1, with r 0 Subtree structure T as father node 0 The association values of all its child nodes are set to 1. As shown in fig. 3, after the nearest point j is found, the associated values of the popular points e, j, and k in the same subtree structure are set to 1. Determining whether a popular point of the correlation threshold thresh has been obtained by a loop, if the correlation threshold is not reached, setting the correlation value to s{ father } inode r i Except for T i-1 Beyond the nodes in the subtree structure, r i The association values of all child nodes are set to (1/2) i . Taking FIG. 4 as an example, the association values of the parent node b of j and the other subtree structure members g, h, i, d are set to 1/2. Last acquired T thresh If the correlation value is greater than the threshold value (1/2) thresh The science popularization content of (1).
The data returned by the server is temporarily stored in the cache device, and the data presentation architecture planning is carried out according to the current route and state of the user. The temporary storage mode can reduce the times of data transmission between networks; in navigation, to provide a more comprehensive view for the user to recognize, we classify the candidates into the following categories: "target content", "background content", "related content", and "other nearby content". When a user walks into a popular science point, the popular science point is defined as a current popular science point, the introduction content of the current popular science point is a target content, the popular science point content of a parent node of the current popular science point is a background content, the popular science point content of a child node of the background content is a related content, and other popular science point contents near the current popular science point but not the child node and the parent node are other nearby contents. When the "current popular point" is changed, all candidate content structures will also be changed according to the current location.
The specific implementation of the step 4) is as follows: as shown in fig. 4, according to the location of the user, the popular science content is triggered at a proper distance according to the setting of the Coverage in the data, the spatial and topic dimensions are presented in a certain form, and when the user follows a popular science route to a series of popular science point searches, a background introduction about the area and popular science points not planned in the popular science route are provided to the user on the way. When the user enters the coverage area of the popular science point, the planning content of the popular science point is provided, including the introduction contents such as text introduction, pictures and the like. The introduction may take the form of multiple themes, for example, when introducing a cultural park or garden, the user introduction may be triggered at a greater distance, whereas when introducing a monument or plaque, the user introduction may have to be triggered at a lesser distance. When the user is in the popular science point area, besides the content triggering the popular science point, the user can inquire the background content, the related content and other nearby content, so that the user can know the area deeply.
In summary, the present invention can realize: 1. establishing structured navigation content according to space and subject dimension so as to meet the requirements of quick response of the content and multi-dimensional presentation of the content; 2. establishing a science popularization guide service mechanism, so that the intelligent terminal not only provides the content of a single science popularization point, but also contains the combined knowledge of related backgrounds and other science popularization points; by using the temporary storage of popular science contents and the efficient geographic retrieval method, the reference contents of other popular science points can be quickly given to a user when introducing a popular science point, and the aim of quick response of the contents can be fulfilled; 3. in the navigation process, the content of the popular science point is positioned in real time and fed back according to the current position, and the fusion presentation mode of space and theme dimensionality provides clearer experience for users; when the user goes to a series of science popularization point exploration along a science popularization route, the method can provide background introduction about the area and scenic spots which are not planned in the scenic line on the way; when the user enters the coverage area of the popular science point, the navigation method provides the planning content of the scenic spot, including introduction contents such as text introduction and pictures.