CN105530316A - Collaborative plotting spatial system of heterogeneous spatial information based on cloud computing technology - Google Patents
Collaborative plotting spatial system of heterogeneous spatial information based on cloud computing technology Download PDFInfo
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- H—ELECTRICITY
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- H04L67/00—Network arrangements or protocols for supporting network services or applications
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- H—ELECTRICITY
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Abstract
The invention provides a collaborative plotting spatial knowledge system of heterogeneous spatial information based on cloud computing technology. The main purpose is to establish a collaborative plotting model of a heterogeneous space of a global map, and realize collaborative plotting with high concurrency and high online user number by means of the lateral expansion capability and the cloud computing. Therefore, dynamic collection of global information is realized, the island effect of the original spatial information is get rid of, the collaboration and communication ability of related spatial information users is reinforced, and the information is dug in depth, so that the spatial information service of the public and the departments improved from local and single contents to global spatial knowledge cloud services on a multi-subject level.
Description
Technical field
The present invention relates to areas of information technology, specifically relate to a kind of Heterogeneous Spatial Information Collaborative Plotting space system based on cloud computing technology.
Background technology
Under the develop rapidly of information technology and Internet technology, the amount of information of people's contact is increasing.Information service process is exactly that one diffuses information in fact, exchange of information, allow information become more valuable process.And the information gathering in this active procedure and extract, do not need to refine wherein contained knowledge content and analyze, so the just data message itself that retrieved by various means of people and own, might not be knowledge, when such as student retrieves in the Bibliographic Search system in library, result for retrieval only has title and author, and does not see that knowledge is come.Although information service can provide quick, a large amount of information, in the face of disorderly and unsystematic, random large, various information resources, people are difficult to rapidly, locate exactly and obtain all critical learning of dealing with problems.
Knowledge services originates from Library and information service industry, become the hot subject of many industries and field close attention, but in the industry such as education, communication, finance, business, consulting, health medical treatment, intermediary sevices, knowledge services is the inexorable trend of future development, and every profession and trade has set about with knowledge services being that guiding carries out reorientating and designing all.For knowledge services research and pay close attention to then relate to multiple ambits such as Library Information Science, industrial economics, computer science, management, pedagogy.From the content of knowledge services own, knowledge services should have broad sense and narrow sense point.In broad terms, knowledge services refers to that one is cut to user and provides the service of required knowledge (comprise and provide general knowledge service and provide professional knowledge service etc.); In the narrow sense, knowledge services should refer to the demand of specialty for user, to deal with problems as target, relevant knowledge collected, screens, research and analyse and support apply a kind of more profound intelligent service.
But Chinese Space knowledge information is abundant not, and service level also rests on reduced levels, started to restrict the development of spatial information socialization application, this just should strengthen spatial knowledge further in the urgent need to China and excavate and service level.Actively push forward spatial knowledge at the application of national economy and social development every field and public welfare service, become the inevitable requirement that spatial knowledge serves national economic development and social development.The research and development of serving with the spatial information analysis under Active Service System support are upgraded by carrying out global space information association, realization provides spatial knowledge online service, improve constantly quality and the service level of online service, effectively will promote Chinese Space socialization of information application level and the socioeconomic progress of its people.
Summary of the invention
In view of above content, the present invention proposes a kind of Heterogeneous Spatial Information Collaborative Plotting space system based on cloud computing technology.
The technology path adopted is as follows:
Technology is implemented to comprise five parts:
One, the service provided
Collaborative Plotting cloud service system will provide following service: the acquisition service of dynamic heterogeneous plotting information; The dynamic heterogeneous plotting information access service in the whole world based on virtual resource pond; Mark and draw information self-adapting in real time/quasi real time show service; Dynamic heterogeneous plotting information updating service; The foundation of the whole world bank of geographical names; Based on the structure service of the mixing Collaborative Plotting model of Multi-Agent; The mutual role help service of identity-based authentication feature; The cooperation with service of multi-user operation; Collaborative Plotting conflict resolution is served, and the framework that the data Layer of system and Collaborative Plotting service module adopt as shown in Figure 1.
In Fig. 1 to mark each numerology as follows:
1. user's request server provides the geodata of needs, server receives user request is distributed by controller, map image for basis provides service by QuadServer, other request msgs can be converted into object model formation XML file by controller and send to browser end, perform JavaScript program and carry out the data being converted into image or user GIS;
2. submit plotting information to user orientation server, submit the data such as personal information checking to simultaneously.Controller server receives user related information, and after Java object is converted into GIS data, sends into cloud platform and process;
3.Agent receives request to controller and carries out perception, and to data analysis, is processed data redundancy and conflict by testing mechanism, the integrality of bound data and reliability;
4. collected by data from controller after Agent process, and after data message is carried out spatial analysis, data mining, original plotted data is integrated, finally sends into HBaseSpatial;
The design class of 5.HBaseSpatial is similar to OracleSpatial, designs specific data type and structure and is used for storage space information, be kept at by spatial information in real database;
6.HBase distributed data base depends on zookeeper, and HBase provides the database purchase service of non-relational for whole system, and for GIS data, non-relational database can provide service more better than relational database in theory;
7. server end agent is designed to the Master-slaves structure being similar to HBase, use the normal work of Master part of the MasterElection mechanism server end agent of zookeeper, except initial query, client agent all with the slave parts by hand of server end agent, to reduce the transfer of data between server end cluster, server end agent uses buffer memory to improve efficiency of service;
The data of 8.HBase are stored in HDFS in the form of a file, by technology such as MemStore for upper strata provides HDFS self to be difficult to the random storage provided, and the functions such as small documents storage.In system, most information is all stored in HBase, but minority is difficult to directly use the content of HBase process to be also directly stored in HDFS.
9. server end agent and database are mutual, upgrade the content in buffer memory, are up-to-date data with what guarantee that user obtains.
Two, Collaborative Plotting System database
Spatial data types is summarized as three most fundamental types: point, line, relation.Three basic forms of it has developed out diversified Spatial data types.Point, an object with longitude and latitude attribute, and the key assignments list of other attributes additional, the state of the mark position that it can be accurate and unique.Line, can be divided into closing coil, non-closed line segment and three kinds, region line type, and finish up inc line segment ordinary representation road, rivers and creeks, rail etc., ending closed line segment ordinary representation beltway and subway etc.Relation, being combined by a series of point, line, and defined by role, is a kind of data type of recessiveness, is that the one between entity and entity contacts relation.Label Tag, do not belong to map basic element, and map element records association attributes key-value pair Key/Value form by Tag.
Logical design from from E-R figure to relation schema conversion data storehouse mainly converts conceptual model to general relation schema, namely the entity in E-R figure, contact between entity attributes and entity is converted into relation schema.Database design figure as shown in Figure 2.
Three, Collaborative Plotting key modules realizes
1. based on the structure module of the mixing Collaborative Plotting model of Multi-Agent
Multi-Agent system (MAS) is the set that multiple Agent forms, and mutually coordinates, mutually serves, jointly complete a task between its multiple Agent member.Its target is by large and the system Construction of complexity becomes little, communicates each other and coordinate, and is easy to the system managed.Activity between each Agent member be autonomy independently, the target of himself and behavior are by the restriction of other Agent member, and they are by competing and the means settlement by agreement such as consultation certainly contradiction each other and conflict.The main research purpose of MAS is that the interactive group consisted of multiple Agent solves the large-scale complex problem exceeding Agent individual capability.Mark and draw in system the advantage that the inside Multi-Agent system is used for solving practical problems, be summed up, mainly contain following some:
(1) in Multi-Agent system, each plotting private mortgage loan has independence and independence, can solve given subproblem, and independently reasoning and planning also select suitable strategy, and affect environment in a particular manner;
(2) Multi-Agent system supports Distributed Application, so there is good modularity, be easy to autgmentability and flexible design is simple, overcome the difficulty that the huge system of construction one and magnanimity level mark and draw management and the expansion caused, effectively can reduce the total cost of system;
(3) in the implementation procedure of Multi-Agent system, system marks and draws the system not pursuing single bulky complex, but it is multi-level to press Object--oriented method structure, the Agent of diversification, its result reduces the complexity of system, also reduces the complexity of each Agent problem solving;
(4) Multi-Agent system is a system being particular about coordination, and this is the innovative point that system is marked and drawed, and each Agent is by coordinating mutually to go to solve large-scale challenge; Multi-Agent system is also an integrated system, and it adopts Technique of Information Integration, by the information integerated of each subsystem together, completes the integrated of complication system;
(5) in Multi-Agent system, communicate mutually between each Agent, coordinated with each other, Solve problems concurrently, therefore can improve the ability of problem solving effectively;
(6) multi-Agent technology has broken the restriction that artificial intelligence field only uses an expert system, at MAS environment, the different experts in each field may collaborative service some experts problem that cannot solve or cannot solve very well, improves system problem-solving ability;
(7) Agent is heterogeneous with distribution.They can be different individual or entities, adopt different methods for designing and computer language exploitation to form, and thus may be completely heterogeneous with distribution;
(8) process is asynchronous.Because each Agent is autonomous, each Agent has oneself process, carries out asynchronously according to the operational mode of oneself.
2. the mutual role help module of identity-based authentication feature
(1) be applied to multi-user based on the Collaborative Plotting System of Multi-Agent to operate, in the future to server, the pressure of system is huge, and Collaborative Plotting System at least supports hundred general-purpose family on-line operations simultaneously, and ten thousand people users are simultaneously online to mark and draw.After a user has marked and drawed on map, other user can see the information marked and drawed user and mark and draw within the shortest time, comprises image, video, sound and vector icon.
(2) system can not be collapsed due to resource exhaustion because of ten thousand users online plotting simultaneously, and multiple user can not at one time, and same place is marked and drawed, and has sequencing, processed when marking and drawing incorrect by authority soprano.
(3) Collaborative Plotting is carried out in grouping, and the plotting between each group can not allow other groups see, relates to right access control, and the same group of result marked and drawed, at terminal demonstration, allows same group membership see plotting result, relate to resource-sharing.
(4) before Collaborative Plotting, first user is invited to add plotting group by group leader, or oneself application adds certain plotting group, until group leader audit by after just add this group, consider online real-time operation or not on-line annealing, ensure the real-time of data, fail safe, the message that user must be sent is preserved in a database, after treating that user logs in, by message push to client, user is facilitated to process in time.
(5), in plotting process, specified by group leader and mark and draw rule, distribute authority, designated user has permission the plotting results modification to this group, deletion, and rank and file can only revise oneself plotting result, can not revise others' plotting result.
(6) plotting group group leader is this group highest weight limit cammander, has the right the result that this group is marked and drawed to gather, increases, delete, change, look into operation, can also specify two this group of Admin Administration user messages and plotted data.
(7) system manager is highest weight limit cammander, the plotting information of each plotting group in system can be gathered, increase, delete, change, look into operation, can also distribute multiple keeper's assist process, and the filtration of the information of plotting.
3. the cooperative module of multi-user operation and Collaborative Plotting conflict resolution module
Conflict in Collaborative Plotting is that the one existed between multiple user is inharmonious, discordant opposition state, and multi-user, to same place, operates simultaneously, or unreasonable to not sharable competitive resource allocation, and produces conflict.Management role is distributed inharmonious, causes the transmission of different task information in the design to there is contradiction, occurs abnormal during user's obtaining information.Some solutions are had for this kind of problem.
(1) formulate constraints, have some rules when operating, everybody observes operation rules and regulations jointly, reduces conflict and occurs.
(2) conflict resolution is needed to provide enough relevant informations, comprise user profile, geospatial information, mark and draw object information, mark and draw operation information, ensure the sufficient Appropriate application of resource.
(3) reason occurred due to some conflict can be predicted, and just can know when some conflict occurs, certain mode should be taked to develop programs, retain data wherein, and delete other irrational data.
(4) joint consultation manages conflict, and when producing when conflicting, user both sides' initiation session consults to generate strategy, and finally formulates solution, clears up conflict.
(5) prioritizing selection, first operates in accordance with arriving first in plotting process, has operated after determining and has preserved database again, and through the bank of geographical names, knowledge base contrast is filtered, and finally preserves correct result.
(6) keeper's ruling manages conflict, when several mode all cannot manage conflict above, the role of keeper can play a role, arbiter can be served as jointly by keeper and plotting group group leader, arbiter is in the plotting clashed, one is selected effectively to mark and draw, abandon the plotting conflicted with it, arbiter needs to understand abundant information to make correct judgement simultaneously, comprise user profile, plotting information, action type, arbiter submits to during result and broadcasts ruling information to the user producing conflict, and allow it refresh the local information marked and drawed on operation interface.
Four, system is marked and drawed
1. mark and draw form
(1) picture is marked and drawed: user can at plotting layer subscript drawing sheet, icon, and the support form of icon has PNG, JPG, GIF etc.;
(2) word is marked and drawed: user can want single left button mouse click input characters on the position of marking and drawing to mark and draw in plotting layer, but user oneself adjustment word size, font, color;
(3) audio frequency is marked and drawed: user can select audio frequency icon to carry out audio frequency plotting in plotting layer;
(4) video is marked and drawed: user can will mark and draw position with left mouse button clicking in plotting layer, selects audio frequency icon, selects corresponding video and upload;
(5) FLASH marks and draws: user can select FLASH icon to carry out plotting FLASH animation in plotting layer, supports that form is SWF file.
2. mark and draw content
The design of plotted data storehouse also can be carried out according to the hierarchical classification of POI, the plotting content of MAS Collaborative Plotting System platform is marked and drawed according to POI classification method when application, marks and draws content as shown in table 1.
Table 1POI classification and classification code abridged table
3. the collection of plotted data
Complete at Customer Premises owing to marking and drawing, when doing data acquisition, we adopt javascript to obtain data.Mark and draw and marking and drawing the collection of the icon information in layer according to the difference marking and drawing type, there is some difference, the information gathered inside picture is marked and drawed comprises the longitude of plot point, and the latitude of plot point, plot is marked on html marker code during path and the clickable icon of server stores.Flash marks and draws the longitude that the information spinner gathered inside type will comprise flash plot point, the latitude of flash plot point, plotting file memory location on the server, and clicks html marker code when marking and drawing file.Audio frequency marks and draws the longitude that the information spinner gathered inside type will comprise audio frequency plot point, the latitude of audio frequency plot point, audio file memory location on the server, and clicks html marker code when marking and drawing file.The longitude that the information spinner gathered inside type will comprise word plot point marked and drawed in word, the latitude of word plot point, the color of word, the size of word, the content of word.Inside the plotting file that these are all, there is a unique mark ID, the additions and deletions of existence to icon of unique ID change to look into and provide conveniently simultaneously.
Five, technical descriptioon
1.DWR framework technology
DWR can convert the backstage code of server end to javascript and call on foreground, inside plotting system, after user has marked and drawed, plotting information gathering is completed, then convert the class that service end will be called to javascript by DWR framework, confession foreground is called, both the information of plotting was directly saved in inside database.
2.AJAX technology
User is after marking and drawing the plotting layer on map by plotting icon, and ajax can will mark and draw information without what refresh, pass information back server, carry out preservation operation by the mode of asynchronous transmission.Consumer's Experience is improve by AJAX, and for better providing man-machine interaction to lay a good foundation.
3.Hibernate lasting data technology
Hibernate is a ripe Database Mapping framework, and it removes map operation by object, by the process to PO, goes additions and deletions to change database.Which simplify the operation of database, programmer can write very hard sql statement, and directly operates object.And in hibernate, comprise three grades of caching technologys, for some conventional constant data, we can improve the reading speed of data greatly by caching technology.
4.postgresql data store
PostGIS builds based on ORD system PostgreSQL, and it adds the ability of storage administration spatial data on the basis of PostgreSQL, is equivalent to the spatial part of Oracle.The maximum feature of PostGIS meets and achieves some specifications of OpenGIS, is foremost open GIS (GeographicInformationSystem, GIS-Geographic Information System) database.
The copyright of PostGIS is included in the GPL of GNU, and that is anyone freely can obtain the source code of PostGIS and studies it and improve.
PostGIS provides following spatial Information Service function: spatial object, spatial index, spatial operation function and spatial operation symbol etc.In addition, following characteristic is additionally provided:
(1) database coordinate transform; (2) spheroid length operation; (3) three-dimensional geometry type; (4) space clustering function; (5) raster data type; (6) raster data and grid/vector analysis function; (7) topological model of Border object is used for processing.
Accompanying drawing explanation
Fig. 1 is Collaborative Plotting service module Organization Chart;
Fig. 2 is the mixing Collaborative Plotting model based on Multi-Agent
Fig. 3 is Collaborative Plotting System flow chart;
Fig. 4 is Collaborative Plotting visit data process;
Fig. 5 is Collaborative Plotting user interaction process;
Fig. 6 is the utilization of Multi-Agent technology;
Fig. 7 is icon Collaborative Plotting;
Concrete enforcement
One, user accesses Collaborative Plotting System process
(1) user is by terminal browser http protocol, the operations such as realization logs in, registration, and sends to server with sheet format, wait-for-response;
(2) server end builds Ajax engine supervisory control system, real-time monitoring server internal state change, after configuring mapped file, server can utilize realizing with java class replacement JavaScript of DWR Technique dynamic and database alternately, completes the operations such as the preservation in plotting process, deletion.On plotting map system, open event is monitored, and carry out the extraction of data and identification to the operation of user and store, as mouse is clicked on map, system can monitor out the coordinate information clicked, and in conjunction with current state response user;
(3), after extracting operation information, server by utilizing map data management instrument, will need the data upgraded to process according to certain rule, and the data that meet with a response.As map marks change, system can analyze identifier and the event and state of this mark, and positioned update mark.
(4), after Ajax engine monitors the change of server state, capture the data that server process completes, and carry out arranging and coded treatment, be finally converted into the discernible character string of browser end or XML/HTML file;
(5) browser of terminal receives more new data, and dynamic response is to user interface;
(6) XML or character string are formed html file, then send back client browser and show.
Two, user interaction process
The first step, domestic consumer, keeper can use browser access domain name in different operating system, and login page setting digital verification or problem checking, log in case unartificial;
Second step, user sends to server log or enrollment form request, and server is according to certain regular real-time response client; When registering user, verification in advance being carried out to the data of input, strengthening Consumer's Experience effect; For the logging request of user, if server fails to respond in time, by some public interfaces of user's redirect, and the response of Entered state can be made to user;
3rd step, user enters Collaborative Plotting menu, can create the plotting group of oneself, or uses existing plotting group to carry out plotting task, receiving system message and amendment personal information; For the founder of plotting group, have the highest weight limit to group's operation, as can good friend be invited, removing members, amendment sub-block, content etc. is marked and drawed in amendment; When user is added with good friend, real-time communication can be carried out with online good friend;
4th step, first server establishes XML file or Java object, and by its content map in database, form relational data table, once the change of data, system can be located rapidly and make response.
Three, the utilization of Multi-Agent technology
The solicited message of user is compiled by Web service customer side, and sets up the queue of SOAP (SimpleObjectAccessProtocol) request message, and plotting operation information is sent to the entrance provided.The content of soap message contains the identifier and the necessary parameter such as plotting type, position, group that call the service of plotting.After gateway A gent receives SOAP request, resolve this request, action name is converted into corresponding DF service describing title.Gateway A gent creates a FIPARequest message, and message comprises the parameter received from SOPA message.This message is sent to suitable Agent, a conflict situation detects service in this way, after Agent process then by responsible detection behavior, FIPA result is submitted to Conflict solution carry out processing and state and behavior outcome are informed gateway A gent, response converts SOPA message to after receiving, autonomous change system mode, and relevant Web service customer side is given in response.
Four, Collaborative Plotting key modules realizes
1. based on the structure module of the mixing Collaborative Plotting model of Multi-Agent
Multi-Agent system (MAS) is the set that multiple Agent forms, and mutually coordinates, mutually serves, jointly complete a task between its multiple Agent member.Its target is by large and the system Construction of complexity becomes little, communicates each other and coordinate, and is easy to the system managed.Activity between each Agent member be autonomy independently, the target of himself and behavior are by the restriction of other Agent member, and they are by competing and the means settlement by agreement such as consultation certainly contradiction each other and conflict.The main research purpose of MAS is that the interactive group consisted of multiple Agent solves the large-scale complex problem exceeding Agent individual capability.Mark and draw in system the advantage that the inside Multi-Agent system has solving practical problems, be summed up, mainly contain following some:
(1) in Multi-Agent system, each plotting private mortgage loan has independence and independence, can solve given subproblem, and independently reasoning and planning also select suitable strategy, and affect environment in a particular manner;
(2) Multi-Agent system supports Distributed Application, so there is good modularity, be easy to autgmentability and flexible design is simple, overcome the difficulty that the huge system of construction one and magnanimity level mark and draw management and the expansion caused, effectively can reduce the total cost of system;
(3) in the implementation procedure of Multi-Agent system, system marks and draws the system not pursuing single bulky complex, but it is multi-level to press Object--oriented method structure, the Agent of diversification, its result reduces the complexity of system, also reduces the complexity of each Agent problem solving;
(4) Multi-Agent system is a system being particular about coordination, and this is the innovative point that system is marked and drawed, and each Agent is by coordinating mutually to go to solve large-scale challenge; Multi-Agent system is also an integrated system, and it adopts Technique of Information Integration, by the information integerated of each subsystem together, completes the integrated of complication system;
(5) in Multi-Agent system, communicate mutually between each Agent, coordinated with each other, Solve problems concurrently, therefore can improve the ability of problem solving effectively;
(6) multi-Agent technology has broken the restriction that artificial intelligence field only uses an expert system, at MAS environment, the different experts in each field may collaborative service some experts problem that cannot solve or cannot solve very well, improves system problem-solving ability;
(7) Agent is heterogeneous with distribution.They can be different individual or entities, adopt different methods for designing and computer language exploitation to form, and thus may be completely heterogeneous with distribution;
(8) process is asynchronous.Because each Agent is autonomous, each Agent has oneself process, carries out asynchronously according to the operational mode of oneself.
2. the mutual role help module of identity-based authentication feature
(1) be applied to multi-user based on the Collaborative Plotting System of Multi-Agent to operate, in the future to server, the pressure of system is huge, and Collaborative Plotting System at least supports hundred general-purpose family on-line operations simultaneously, and ten thousand people users are simultaneously online to mark and draw.After a user has marked and drawed on map, other user can see the information marked and drawed user and mark and draw within the shortest time, comprises image, video, sound and vector icon.
(2) system can not be collapsed due to resource exhaustion because of ten thousand users online plotting simultaneously, and multiple user can not at one time, and same place is marked and drawed, and has sequencing, processed when marking and drawing incorrect by authority soprano.
(3) Collaborative Plotting is carried out in grouping, and the plotting between each group can not allow other groups see, relates to right access control, and the same group of result marked and drawed, at terminal demonstration, allows same group membership see plotting result, relate to resource-sharing.
(4) before Collaborative Plotting, first user is invited to add plotting group by group leader, or oneself application adds certain plotting group, until group leader audit by after just add this group, consider online real-time operation or not on-line annealing, ensure the real-time of data, fail safe, the message that user must be sent is preserved in a database, after treating that user logs in, by message push to client, user is facilitated to process in time.
(5), in plotting process, specified by group leader and mark and draw rule, distribute authority, designated user has permission the plotting results modification to this group, deletion, and rank and file can only revise oneself plotting result, can not revise others' plotting result.
(6) plotting group group leader is this group highest weight limit cammander, has the right the result that this group is marked and drawed to gather, increases, delete, change, look into operation, can also specify two this group of Admin Administration user messages and plotted data.
(7) system manager is highest weight limit cammander, the plotting information of each plotting group in system can be gathered, increase, delete, change, look into operation, can also distribute multiple keeper's assist process, and the filtration of the information of plotting.
3. the cooperative module of multi-user operation and Collaborative Plotting conflict resolution module
Conflict in Collaborative Plotting is that the one existed between multiple user is inharmonious, discordant opposition state, and multi-user, to same place, operates simultaneously, or unreasonable to not sharable competitive resource allocation, and produces conflict.Management role is distributed inharmonious, causes the transmission of different task information in the design to there is contradiction, occurs abnormal during user's obtaining information.Some solutions are had for this kind of problem.
(1) formulate constraints, have some rules when operating, everybody observes operation rules and regulations jointly, reduces conflict and occurs.
(2) conflict resolution is needed to provide enough relevant informations, comprise user profile, geospatial information, mark and draw object information, mark and draw operation information, ensure the sufficient Appropriate application of resource.
(3) reason occurred due to some conflict can be predicted, and just can know when some conflict occurs, certain mode should be taked to develop programs, retain data wherein, and delete other irrational data.
(4) joint consultation manages conflict, and when producing when conflicting, user both sides' initiation session consults to generate strategy, and finally formulates solution, clears up conflict.
(5) prioritizing selection, first operates in accordance with arriving first in plotting process, has operated after determining and has preserved database again, and through the bank of geographical names, knowledge base contrast is filtered, and finally preserves correct result.
(6) keeper's ruling manages conflict, when several mode all cannot manage conflict above, the role of keeper can play a role, arbiter can be served as jointly by keeper and plotting group group leader, arbiter is in the plotting clashed, one is selected effectively to mark and draw, abandon the plotting conflicted with it, arbiter needs to understand abundant information to make correct judgement simultaneously, comprise user profile, plotting information, action type, arbiter submits to during result and broadcasts ruling information to the user producing conflict, and allow it refresh the local information marked and drawed on operation interface.
In sum, invented a kind of Heterogeneous Spatial Information Collaborative Plotting space system based on cloud computing technology herein, novelty is:
1. by Multi-Agent model is incorporated into Collaborative Plotting System, and be applied in cloud computing environment, utilize the ability extending transversely of model itself and the distributed nature of cloud computing, realize the Collaborative Plotting of high concurrent, high online user number; Introduce the Role-Based Access Control of identity-based authentication feature, realize the opening of the user of different levels being marked and drawed to content, thus ensure that Collaborative Plotting is applied the transformation of applying to the public by department.
2. utilize spatial analysis and data mining correlation technique, carry out the detection of marking and drawing conflict and redundancy, and combine closely with Agent system normal form, realize the service end conflict resolution mechanism of autonomy-oriented, automation; By integrating marking and drawing content, solving with marking the problems such as jljl, different mark foreign matter, the different mark of jljl, same mark foreign matter, and plotting content being carried out to the control of accuracy and serious forgiveness; Traditional search engines achievement, plotted data and spatial information product are comprehensively excavated, set up mutual space time correlation and two-way index, realize the excavation of hot spot data and the generation of picture and text, the spatial knowledge finally realizing plotted data is taken the initiative in offering a hand, and changes traditional spatial knowledge service mode.
By setting up spatial knowledge service system, achieve specializing of spatial knowledge application, the final spatial knowledge service system realized based on Collaborative Plotting technology, for the associated user such as the public, government provides spatial information to take the initiative in offering a hand.
Claims (3)
1. based on a Heterogeneous Spatial Information Collaborative Plotting space system for cloud computing technology, its feature comprises: the acquisition service of dynamic heterogeneous plotting information; The dynamic heterogeneous plotting information access service in the whole world based on virtual resource pond; Mark and draw information self-adapting in real time/quasi real time show service; Dynamic heterogeneous plotting information updating service; The foundation of the whole world bank of geographical names; Based on the structure service of the mixing Collaborative Plotting model of Multi-Agent; The mutual role help service of identity-based authentication feature; The cooperation with service of multi-user operation; Collaborative Plotting conflict resolution is served.
2. a kind of Heterogeneous Spatial Information Collaborative Plotting space system based on cloud computing technology according to claim 1, it is characterized in that: Multi-Agent model is incorporated into Collaborative Plotting System, and be applied in cloud computing environment, utilize the ability extending transversely of model itself and the distributed nature of cloud computing, realize the Collaborative Plotting of high concurrent, high online user number; Introduce the Role-Based Access Control of identity-based authentication feature, realize the opening of the user of different levels being marked and drawed to content, thus ensure that Collaborative Plotting is applied the transformation of applying to the public by department.
3. a kind of Heterogeneous Spatial Information Collaborative Plotting space system based on cloud computing technology according to claim 1, it is characterized in that: utilize spatial analysis and data mining correlation technique, carry out the detection of marking and drawing conflict and redundancy, and combine closely with Agent system normal form, realize the service end conflict resolution mechanism of autonomy-oriented, automation; By integrating marking and drawing content, solving with marking the problems such as jljl, different mark foreign matter, the different mark of jljl, same mark foreign matter, and plotting content being carried out to the control of accuracy and serious forgiveness; Traditional search engines achievement, plotted data and spatial information product are comprehensively excavated, set up mutual space time correlation and two-way index, realize the excavation of hot spot data and the generation of picture and text, the spatial knowledge finally realizing plotted data is taken the initiative in offering a hand, and changes traditional spatial knowledge service mode.
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