Micro-Blog: Sharing and Querying Content ThroughMobile Phones and Social Participation

Zhonglu Wang

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OverviewMicro-blog ApplicationsBlock diagram of the Micro-Blog

software architectureDesign ConsiderationsBattery Life and Location

AccuracyLimitations and ongoing work

Overview

A high level view of the virtual information telescope. User generated/sensed content are posted on a location-based map. Internet users browse and query this content. Queries are resolved through participatory or automatic sensing.

Micro-Blog Applications

Block diagram of the Micro-Blog software architecture

The Micro-Blog phone client, implemented on Nokia N95, is approximately 6,000 lines of code using the Carbide C++ compiler supported by the Symbian OS platform2.

The server is approximately 7,500 lines of code across C++, PHP, Ajax,and MySQL.

Design ConsiderationsEnergy-Aware LocalizationEnergy-Aware ApplicationsIncentivesLocation PrivacySpamContent Inaccuracy

Battery Life and Location Accuracy

WIFI+GPS

GSM+WIFI

Limitations and Ongoing workLocation-Privacy in General PublicExploiting Accelerometers for

LocalizationIntegration with a Social Network

ApplicationIdentifying False ContentHow Conclusive is User Study?