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Wireless and Mobile Access to Digital Libraries

Explore the worldwide market growth of wireless and mobile access to digital libraries, including the increase in subscribers and service revenue. Discover the potential for collaboration between US and Korean universities, research, and commercial applications in this field.

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Wireless and Mobile Access to Digital Libraries

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  1. Wireless and Mobile Access to Digital Libraries Sang-goo Lee School of Computer Science and Engineering Seoul National University Seoul, Korea

  2. Worldwide Market • Year 2000 to year 2007 • subscribers: 530 million to 1,370 million • service revenue: $295 billion to $521 billion • Better technologies • 3G services by 2003 (Europe and Asia) • Protocols (eg, WAP) to include graphics and animations • Intelligent and powerful mobile devices

  3. Korean Market • One of the fastest growing markets • Early adapters of new technologies • Lifestyles that demand ubiquitos/ untethered communications

  4. 7:00 Wake up 8:00 Leave home 8:10 Get on bus 8:20 Transfer to subway 8:50 - 14:00 3 classes, lunch, and pools 14:15 Get on subway 14:30 Transfer to another line 14:50 ESL class 16:45 Get on bus 17:00 Math Tutoring 19:00 Get on bus 19:35 Dinner and Karaoke with girlfriend 21:30 Get on bus/subway 22:05 Back home A typical day of Youngsoo 160 minutes (2:40) on the road!

  5. US Universities Research & Publications Korean Universities Technology Transfer Pilot Applications Commercial Deployment Korea-US Collaboration Korean Companies

  6. HANUL • A mediator-based DL system • Integrate distributed information sources to create one single virtual library for the user • Query Recycling • Virtual Index Manager • Result Set Manager • Result Cache Manager

  7. Cd Ca Cb Ce Cc Evolving Hierarchical Topic Structure • Semi-supervised clustering of documents • Hierarchy reorganization/ restructuring operations Ca Cb Cc Cd Ce Semi-supervised clustering Clustering area Fuzzy concept subsumption matrix Sub-hierarchy Cd =0.8 Ca Cb Ce Cc

  8. Mall Mall End Purchaser End Purchaser Catalog Object Server Central Repository Server DC Manufacturer Catalog Manufacturer Catalog Manufacturer Manufacturer CatalogStop • A digital catalog library system for catalog sharing and standardization • Extended Catalog Model • Catalogs • the hierarchy

  9. PDA Data Management • An embedded DB engine for PDA (JTEL’s CellVic) • main memory database management • support for PDA-specific functions • small footprint • sync management

  10. Gestational Diabetes • Anytime, anywhere telemedicine • Diabetes + pregnancy => close monitoring

  11. Query by Taxonomy • Query/navigational characteristics of mobile interaction • Personalized and evolving taxonomy

  12. Summary • Wireless access to digital library is important • QBT and other relevant problems/ issues are interesting • Ideal area for Korea-US collaboration

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