where to find help when you meet a emergency? helpme : a guidance system for self-rescue
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Where to find help when you meet a emergency? HelpMe : a guidance system for self-rescue. Kuien Liu Institute of Software Chinese Academy of Sciences. Pray for Kunming 2014.3.1. Motivation. “Please show me the best way to escape”. Who needs this service?. Run from danger - PowerPoint PPT PresentationTRANSCRIPT
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Where to find help when you meet a emergency? HelpMe: a guidance system for self-rescue
Kuien Liu
Institute of SoftwareChinese Academy of Sciences
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Pray for Kunming
2014.3.1
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Motivation• “Please show me the best way to escape”
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Who needs this service?
• Run from danger– Getting rubbed when walk alone
• Go get help– save the wounded, pets and persons.– Search for gas when a car broke down
• Emergency center– Official, civil or private organizations.
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What does HelpMe serve us?
• For persons run from danger– Daytime: run to crowded places• Based on population, transportation and POI datasets
– At Night: run to bright places• Based on nightscape, road network and POI datasets
• For persons go get help– Route planning: nearest spots + shortest waiting
time + fastest transportation
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What kind of instructions we need?
• Simpler and shorter– One-click control– Short instruction– Easy to understand
• Rational– Temporal and/or spatial constrained– Globally optimal, for the wounded– Locally optimal, for the runaways
• Clearly Induced– Vehicles, e.g., vacant taxi, bus/railway station nearby– Places, e.g., hospital, policy station, gas station, etc.
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Workflow of HelpMe
Mobile Back-end Server
1. Patterns of public transit+
2. Navigation on the Map+
3. Optimal route planning
current GPS
Instructions
“northeast,200 meters,turn left”
GPS + movement
Emergency Center
Rescue plan
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Scene 1: Go-Get-Help(GGH)
• For a person meets a wounded man:– T1: time to run to the possible place for help
– T2: time to wait on the possible place for help
– T3: time to transmit the wounded to a hospital
– E.g., the fastest way to hospital by bus• find the places with minimum {T1+T2+T3}
T1 T3T2
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Scene 2: Run-From-Danger(RFD)• Where is the best place to run?– Run to crowded areas in daylight, or bright locations at night– Where the crowd/bright locations are at that moment?
• NOAA knows, NASA knows, we don’t …
– Fortunately, we have BIG DATA.• Places familiar to individual users• Places with a crowd of POIs
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Technologies (1/3)
• Our existing works– Algorithms
• 1. Patterns of public facilities• 2. navigation• 3. route planning
– Techniques on data management
• To do in the future– Continuously optimizing as running– Person-to-Person, help each others
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Technologies(2/3)
• An Example of Route Planning– Main Road Identification Shortest Path Searching Evacuation Cost
Computing Best Route Selection
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Technologies(3/3)• The maintenance cost on meta-data and the
retrieval cost are not trivial– E.g., the fastest way to hospital by bus
Hospitals in Beijing Stops in Beijing
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Prototype on Android
It can be implemented as an component on the COS Operating System
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Q & A