Semi-Automatic POI Extraction in Navigation Systems
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Solution Overview
Problem
Existing navigation systems face challenges in extracting and aligning point of interest (POI) information from different document entries, leading to inefficiencies and increased costs due to the inability to effectively collect and display relevant information.
Innovation Solution
A navigation system with a semi-automatic POI extraction mechanism, comprising a sample extract module, rule module, auto extract module, and display module, which extracts features from sample fields with manual labels, generates rules to assign labels to target fields, and inserts relevant information into a location-based guide for display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual extraction methods are used to collect POI information from different document entries, then extraction accuracy can be maintained, but labor costs increase and processing efficiency decreases
Solution Approach 1:
The system enables automatic self-extraction of POI information from web documents through rule-based modules that autonomously identify and extract relevant fields without continuous manual intervention, allowing the system to serve itself in collecting location-based information
Solution Approach 2:
The patent replaces manual mechanical extraction processes with automated rule-based extraction modules that use predefined rules and features to automatically identify and extract POI information from documents, eliminating the need for manual labor while maintaining extraction capabilities
2Productivity
If automated extraction methods are used to collect POI information from web documents, then processing efficiency increases, but extraction accuracy decreases due to inability to align fields properly
Solution Approach 1:
The patent introduces rule-based extraction modules as intermediaries between automated document processing and POI extraction. These modules use predefined rules and features to bridge the gap between raw document data and structured POI information, ensuring accurate field alignment while maintaining automation
Solution Approach 2:
The system performs preliminary actions by pre-defining extraction rules and features for different POI types before actual extraction occurs. This preparatory work enables the automated system to accurately identify and align fields during the extraction process without requiring manual intervention for each document
3Loss of information
If comprehensive POI information is collected from multiple document sources, then information completeness improves, but system complexity and processing costs increase
Solution Approach 1:
The patent segments the POI extraction system into specialized modules, each handling specific POI types or document formats. This segmentation allows the system to manage complexity by dividing the comprehensive extraction task into smaller, manageable components while still achieving complete POI information collection
Data Source
AI summary
A method of operation of a navigation system includes: extracting a feature from a sample field with a manual label associated with a point of interest, the feature for locating the sample field in a document; generating a rule based on the feature extracted to assign the manual label to a target field; extracting the target field from the document with the manual label assigned by applying the rule to the document; and inserting the target field associated with the point of interest to a location-based guide for displaying on a device.