168 results about "Spatial query" patented technology

A method, system, and computer program product provides improved performance for queries on local partitioned indexes. A method of performing a database query comprises receiving a query of spatial data in a database, the database comprising at least one partitioned spatial index, obtaining metadata relating to all partitions of the spatial index using array-fetching techniques, determining, for each partition, whether the partition is relevant to the query by comparing with “footprint” (root_mbr) information stored in the metadata for the partition, and processing the query on each relevant partition.

A campaign management system manages campaign data for one or more campaigns and geospatial data for areas in which the campaigns are directed. The system performs spatial queries, data queries, and/or geocode-based queries, generates maps geographically identifying where campaign events are occurring in the geographic area, and generates feature data for display. Campaign symbology, such as shading, color coding, patterns, icons, or other symbols identify one or more campaign events in the geographic area.

Techniques for managing tactical query to continuous query conversion are provided. In some examples, a tactical query configured to enable the pulling of business event data from a database to a query engine may be determined. For example, a query engine may be configured with the tactical query. The configuration may be based at least in part on an indication of the business event data to be displayed. Further, in some examples, a conversion of the tactical query to a continuous query may be enabled. The conversion or enablement of the conversion may be based at least in part on a request.

A method summarizes a video acquired of a scene spatially and temporally by specifying a spatial query and a temporal query. Frames of the video are selected according to the spatial query and the temporal query, and then the selected frames are composited into an image that represents spatial and temporal characteristics of the scene.

The invention relates to a vector data space indexing method base on hbase and geohash. The method comprises the following steps: firstly, vector data to be stored is subjected to grid grading; secondly, grid path is calculated; then, the structure of a grid list is designed and indexing codes are established; lastly, the space range to be inquired is subjected to space indexing. According to the vector data space indexing method, two-dimensional vector data such as dots, lines and surfaces are mapped into a one-dimensional character string type rowkey index, so that a huge amount of vector data can be stored through the adoption of the hbase, and the high-performance space inquiry analysis service is provided.

An apparatus, system, and method for executing a distributed spatial data query. The present invention allows a client to perform spatial queries against spatial data stored in a various formats in various separate databases. A view of the data is created in the relevant databases, wherein the spatial data is converted to WKB and stored as a BLOB. A federated server contains nicknames for the various database views, and also contains views of the data where the BLOB is converted back to a spatial data type. The federated server presents to clients an application view of the distributed heterogeneous spatial data such that the clients can treat the data as if it were a homogenous data source. Also taught is incorporating distributed non-spatial data into the application view by creating a nickname and a view on top of the nickname which derives spatial information from the non-spatial location information.

A database has a plurality of entries and a plurality of attributes common to each entry, where each entry corresponds to an individual. A query is received from a querying entity query and is passed to the database, and an answer is received in response. An amount of noise is generated and added to the answer to result in an obscured answer, and the obscured answer is returned to the querying entity. The noise is normally distributed around zero with a particular variance. The variance R may be determined in accordance with R>8 T log²(T/δ)/ε², where T is the permitted number of queries T, δ is the utter failure probability, and ε is the largest admissible increase in confidence. Thus, a level of protection of privacy is provided to each individual represented within the database. Example noise generation techniques, systems, and methods may be used for privacy preservation in such areas as k means, principal component analysis, statistical query learning models, and perceptron algorithms.

The invention discloses a distributed query method of spatial service data. The distributed query method of the spatial service data comprises querying and parsing a spatial querying and processing object to generate a parsed and optimized spatial query plan; submitting a spatial data query to a service data access and integrated-service end which supports spatial function development; performing interactive operation on query workflow and back-end data service resources which support spatial development and spatial-data storage and returning a query result to an access and integrated client which calls service to apply. The distributed query method of the spatial service data has the advantages of being capable of performing distributed query on the spatial service data based on service access and an access method of the spatial service data, performing integrated-query on geographically distributed data source through a data service request, combining a returned result data-set and guaranteeing the data-consistency of an access and integrated process in a data protocol.

The invention discloses a fairway three-dimensional simulated electronic map which is formed in a following way: DEM topographic data, DOM image data, 3D model design data and aviation shooting model data are used for forming FLT topographic geometric data, RGB topographic texture, 3D model geometric data and RGB topographic texture through compilation of CREATOR tools, PHOTOSHOP tools and 3DMAX tools; then the FLT topographic geometric data and the RGB topographic texture are used for forming FLT topographic data through the CREATOR tools; the 3D model geometric data and the RGB topographic texture are also used for forming FLT topographic data through the CREATOR tools; the two types of FLT topographic geometric data form the fairway three-dimensional simulated electronic map in VEGA. The model of the fairway three-dimensional simulated electronic map expands the visualization concept and applies the visualization technology throughout the whole GIS process. The visualization not only reproduces operation results but also provides more powerful support for data processing, space inquiry and analysis and various three-dimensional models and also provides a three-dimensional, vivid, dynamic and interactive running environment for GIS.

The invention provides a method for rendering mass moving targets. The method includes the steps that indexes are preset, wherein the indexes include the first-level index and the second-level index, the first-level index is the index between the grid range within which a geographic grid region divided in advance is located and the corresponding second-level index, and the second-level index is the index for the positions of the moving targets located within the grid range and the attributes of the moving targets; a spatial query request is received; the second-level index corresponding to the grid range within which the geographic grid region matched with the request is located is found in the first-level index; the positions of the moving targets located within the grid range and the attributes of the moving targets are extracted in the second-level index and aggregated to form a moving target data set; the moving target data set is rendered. According to the method, the space searching efficiency of the mass moving targets can be improved, and it can be ensured that mass data are refreshed efficiently in real time and dynamic rendering of the mass data is supported.

Disclosed is a method for processing temporal data. A spatial query is received specifying a mapping function that identifies a set of temporal values for one or more objects. Geographic positions are automatically extracted from each set of temporal values for each of the one or more objects. Point objects are generated from the geographic positions. One or more spatial objects are generated from the point objects.

The invention discloses a distributed expandable quadtree indexing mechanism oriented to Cassandra and a query method based on the mechanism, and belongs to the technical field of data space storage and management. The method for establishing indexes and achieving space query when space data is stored through Cassandra is put forward, and an expandable quadtree indexing and coding method from the aspects of combined quadrants, index domains and a quadtree, a storage method based on the space object and index code mapping relation of Cassandra and a method for executing space query under indexes are put forward. Multilayer space indexes are established by fully using a Cassandra data model and reading characteristics, indexing can be conducted at different levels for the sizes of space entities, the mechanism and the query method are suitable for the achievement of spatial indexes under the distributed storage environment, parallel execution of space query is facilitated, and the problem that space indexing and space query are not supported when space data is stored through Cassandra is solved.

The invention discloses a campus positioning system based on an LBS (Local Based Service) platform, which integrates Wi-Fi (Wireless Fidelity), GPRS (General Packet Radio Service) technology and Internet, mobile communication, a GIS (Geographic Information System) and other networks, and achieves the functions of terminal positioning, map inquiry, navigation, tracking management, short-message notification and the like by utilizing a GPS (Global Positioning System) chip cell phone or a PDA (Personal Digital Assistant) client side. The system provides various information services related to the positions of schools for students, teachers and visitors, realizes personnel and building position management, achieves yellow-page inquiry management that flexible and various bidirectional spatial inquiry of both graphical information and attribute information in the Web GIS system can be carried out, realizes group management that actions of a user within an effective period of time are record to form space and time combined data to design a user and group essential information database for data storage, and provides normative expansion interfaces to achieve efficient communication and cooperation among interiors of teaching and research sections, all the departments and all the personnel. The system has the advantages of high cost and precision, strong cooperative handling capability and the like.

In the processing of a query while being translated from the SPARQL language to the SQL language, a manner of navigation through the one or more graphs is provided. The plurality of the nodes in the one or more graphs generated from the query is identified. The plurality of the nodes are assigned a priority and arranged in the priority queue based on the assigned priorities. The node with a highest assigned priority is selected each time for execution of the query from the selected node. The one or more graphs are navigated from the selected node to traverse to the one or more nodes connected with the selected node. An access plan element is generated corresponding to the selected nodes and the one or more traversed nodes.

The invention discloses a Merkle tree structure-based space inquiring integrity verification method. Based on an existing quadtree node generated by a self-adaption Hilbert curve, a Merkle tree structural construction method for supporting the inquiring integrity verification is provided, and an integrity verification method for range inquiring and KNN inquiring is provided, so that an integrity verification result provided by the Merkle tree structure-based space inquiring integrity verification method is free of phenomena of the misinformation and the false-information, and malevolence changing is difficult to carried out on a user inquired result by a service supplier. Under the mode of space data outsourcing service, the method can provide an efficient verification structural generating function, accurate range inquiring and a KNN inquiring integrity verification function for a user, and therefore the quality of space inquiring service can be guaranteed.

A campaign management system manages campaign data for one or more campaigns and geospatial data for areas in which the campaigns are directed. The system performs spatial queries, data queries, and/or geocode-based queries, generates maps geographically identifying where campaign events are occurring in the geographic area, and generates feature data for display. Campaign symbology, such as shading, color coding, patterns, icons, or other symbols identify one or more campaign events in the geographic area.

The invention relates to a visible management platform system for highway maintenance data and a visible management method, which are used for the statistics and management of the basic data of highway maintenance; the management platform system comprises a database and a visible platform, wherein the database is provided with the data of highways and auxiliary facilities and the highway spatial data, is used for carrying out integrated display on the data of the highways and the auxiliary facilities and the highway spatial data, and provides a result of spatial query and attribute query; and the visible platform utilizes a cartographic information system GIS to carry out visual display on the database in a cartographic form. The system and the method can realize the digital management of highway maintenance, get rid of the prior paper document-type record, greatly promote the capability of data storability and expandability and are simple and rapid to inquire interface in order that the work of maintenance management becomes simpler, more convenient and visual.

The invention relates to a hierarchical retrieval method for multi-source remote sensing resource heterogeneous databases and solves the problem that the traditional remote sensing resource cannot be subjected to cross-database retrieval and the problem that the retrieval speed is low in the prior art. The method comprises the following steps of: firstly, unifying databases distributed in each remote sensing data center at different places, and storing all the unified data in a local database so as to unify remote sensing resource heterogeneous cataloged databases and provide basis for the subsequent retrieval; secondly, performing hierarchical retrieval on all the data in the local database, wherein the hierarchical retrieval adopts two retrieval strategies, namely primary filtration and secondary filtration so as to reduce the calculated amount; and finally, sequencing the retrieval results and preferentially presenting the retrieval result with high quality to a user. By the method, efficient and stable spatial query of the remote sensing resource heterogeneous databases is realized through the unification of cataloged data and grading of spatial query.

A technology is described herein for identifying suggested query completions for a partial query based upon unique queries which have suffixes similar to the suffix of the partial query, but have prefixes which do not contain the prefix of the partial query. The technology described herein selects suggested query completions for the partial query based on terms occurring at the ends of the unique queries, in a manner which is not limited to past queries that include all of the terms in the partial query. As a result, meaningful suggested query completions that are likely to assist the user in completing a partial query can be provided in instances where terms in the prefix of the partial query are ambiguous or uncommon.