Document-Location Reference Index for Geospatial Relevance
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Solution Overview
Problem
Current online advertising and document searching technologies face challenges in effectively placing relevant advertisements and retrieving relevant documents due to limitations in indexing mechanisms and user keyword choices, leading to suboptimal user experiences and revenue opportunities.
Innovation Solution
A system that determines document relevance to a geographical or abstract region of interest by linking location references to documents, generating and updating a document-location reference index both online and offline, and using a query engine and score generator to select and prioritize documents based on relevance scores.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional keyword-based indexing is used for document searching, then the search system is simple to implement, but many potentially relevant documents are not included in query results
Solution Approach 1:
The patent introduces location references as an intermediary between documents and user queries. Instead of directly matching keywords, the system uses location references (geographical entities, places, regions) as a mediator to connect user intent with relevant documents, thereby improving retrieval relevance while managing complexity through this intermediate layer
Solution Approach 2:
The patent adds a geographical/location dimension to traditional keyword-based document indexing. By linking documents to location references and enabling searches based on geographical regions, the system transforms a one-dimensional keyword match into a multi-dimensional search space that includes spatial context, thereby capturing more relevant documents
2Reliability
If advertisements are placed without considering geographical relevance, then the advertising system is simple to operate, but the click count and revenue are suboptimal
Solution Approach 1:
The patent applies local quality by making advertisement placement geographically specific. Instead of uniform ad placement across all users, the system tailors ad placement to the user's local region by matching advertisements with documents relevant to the user's geographical location, thereby improving ad relevance and effectiveness
Solution Approach 2:
The patent changes the parameters of ad placement from generic keywords to location-specific parameters. By incorporating geographical coordinates, region names, and location references into the ad targeting parameters, the system dynamically adjusts which advertisements are shown based on the user's location, improving click-through rates and revenue
3Speed
If a comprehensive document-location reference index is maintained online, then document relevance can be quickly determined, but the system requires significant computational resources and time to update
Solution Approach 1:
The patent implements preliminary action by pre-computing and storing the document-location reference index before online queries are processed. The index is built offline by associating documents with location references in advance, so that during online operation, the system can quickly retrieve relevant documents without performing complex computations in real-time
Solution Approach 2:
The patent applies periodic action by updating the document-location reference index at scheduled intervals or in batches rather than continuously. The system periodically re-indexes documents and location references, balancing the need for up-to-date information with the computational cost of index maintenance, thereby reducing the time loss associated with frequent updates
Data Source
AI summary
Document relevance is determined with respect to a region of interest (ROI). A set of location references may be associated with a set of documents. The system selects location references associated with an ROI and then selects documents corresponding to the selected location references. The selected documents can be reported or processed further. A document-location reference index can be accessed when the present system is ‘online’ and processing a request for documents relevant to an ROI. The document-location reference index may be generated and updated while the present system is ‘offline’ and not processing a request for documents. The resulting relevant documents may be provided to a user in response to a document search associated with the ROI or along with an advertisement associated with the ROI.