location-based web services for car infotainment · 2009-07-17 · geospatial web search •...
TRANSCRIPT
Location-Based Web Services for Car Infotainment
Susanne Boll
University of Oldenburg &OFFIS Institute for Information Technology
01.07.20091st tubs.CITY Symposium,
Braunschweig52°16‘30"N 10°31‘43"E
C3World projekt partnersNiedersächsisches Ministerium für
Wissenschaft und Kultur
OFFIS Oldenburg - Institut für Informatik
Technische Universität Carolo Wilhelmina zu Braunschweig
Leibniz Universität Hannover
Volkswagen Konzernforschung
Overview
Grounding and Mapping of Location
and Content
In-Car UsageAnalysis of Web Content
Content and Location
External Sources, Maps, Indexes
Navigation and Infotainment
Motivation• Location-related information need
• Users require location-relatedinformation
• Up to 20% location-related queriesat general search engines
• Spatial information on the Web• Estimated location references in
up to 20% of Web pages• Richer information than most
commercial databases• Valuable source of location-based
information
Geographic Web Information Retrieval• Matching of Web information
to the real world• Semantic retrieval of location
information• Identification, extraction and
processing of geographic references
The challenge• Harvesting, identifying, grounding,
augmenting, exploiting, visualizing location information
• Geospatial information on the Web is:• Hidden in Web pages
• Metadata: Geographic coordinates• Content: Addresses, Place names
• Scattered• Present in a variety of different non-
connected pages• Not explicitly structured
• Mostly written in the textual content with typos, omission etc. without known relation to content
<META name="geo.position"content="53.1467;8.2154">
Geospatial Web Search• Discovery, extraction, processing
of location references• Classification of location-relevant
content• Semantic enrichment of location
and content• Hybrid search on geospatial,
textual and further semanticaspects
Coordinate: 53.146712°N 8.215467°E
Geospatial Retrieval Processes
discover
understand
augment
explore
crawling
geoparsing
link analysis
identification mining scope analysis
semantic enrichment
location extension
visualization
interaction
feedback integration
annotation
Spatial search as new applicationfor in-car infotainment• Understanding of spatial
characteristics• Efficient geospatial search engine• In-car Search
• Special (mobile) requirements and information needs
• Information for the here and now
• Development towards integratedhigh-value services
Requirements of car-based search• Crawling, indexing and querying of Web
content• Location- and route-specific content• Information for drivers and passengers
• Search interaction• Spontaneous and ‚standing‘ search
• Visualization within the car systems• Preprocessing and presentation
• Integration• Communication of car and search engine• Context processing• Connection to car and navigation systems
discover
understand
augment
explore
Architecture
Spatial Web Index
Query Engine
Webcrawler, Indexer, Geoparser
Cont
ext
In-Car System
Car-To-X
Search Engine
Presentation, Visualization,
Interaction
Preprocessing,Context Processing
Context in the car• Context for improvement of search results
and situation-aware presentation• Adaptation to situation and information need• Spatial context
• Position, route, destination,…
• Additional context available in the car• CanBUS• Duration of trip• User profile• Familiarity with route• Type of trip• …
In-Car Context
Automotive Context
Spatial Context
User Context
Spatial context is more than position• Route estimation, departure,
destination, speed, time, distances, …
• Support of mobile users‘information needs
• Result adaptation in mobile IR• Spatial Query + Spatial Filters +
Spatial Ranking Spatial Search• Hybrid search: combination of
spatial and textual features
Interface and Presentation• Challenges
• Restricted interaction• Restricted attention• Fast mobile movement
• User interaction• Intuitive query formulation and
handling• Use of rich context information• Dynamic interaction and exploration
• Presentation of content• Preprocessing and adaptive
visualization• Use of semantic aspects to match query
and content
Conclusion• Spatial search as new application for
in-car infotainment• Spatial search engines for trip-based
and roadside information• Navigation as ‚smart passenger‘• Research challenges in
• Web search• Geographic information retrieval• HMI• Automotive Infotainment
Q&A
Susanne BollMedia Informatics and Multimedia Systems
University of Oldenburg, Oldenburg, [email protected]
53° 8′ 55.9″ N 8° 12′ 0.43″ E