Multimedia Electronic Enterprise

1. Multimedia Electronic Enterprise

2. E-Commerce • Current and Emerging E-Commerce • multimedia information systems, such as medical database, news archive, broadcast.com, on-line library, etc. • need more interactivity • tele-control, such as remote monitoring • can be extended to remote diagnosis, remote vehicle control, etc. • need better multimedia support over Internet • on-line banking and purchasing • need interoperability and efficient global transaction processing • book stores, computer stores, CD records • current applications does not require sophisticated visualization • consider purchasing cloth,customized furniture, house • need graphical simulation and personalization

3. E-Commerce • Current Focus • globally interoperable information system among all entities • e.g., defense people will know all their suppliers and the status of the supplies in stock • funded ECRC to educate business to get on line • e.g., medical information system (statistics) • e.g., Dell sends parts order immediately after clients' order • research • workflow modeling and automation • security: how to authorize or authenticate these accesses

4. E-Enterprise • Extend to E-Enterprise to consider non-commercial applications • e.g., intelligent education system -- collect information on web • e.g., virtual museum, virtual zoo: allow camera control and multimedia visualization • e.g., remote virtual reality training for astronauts • remote vehicle control for cargo transportation • remote diagnosis for doctors or repair service

5. Our Research Focus • Develop MEE enabling technologies • Build MEE subsystems, middlewares, standards, design patterns, and tools to facilitate the development of MEE application systems • highly customizable • highly reliable/available/secure • high performance

6. Research Topics • Web Server Systems Design • MEE server subsystem • availability, load balancing, etc. • MEE middleware for QoS assurance • integrated QoS considering admission control and network QoS • global transaction processing technology • support agent execution -- security issues • Integrated Interface • virtual strip with stores and officies • each store or office can link to multiple sites • personal database to guide the information organization/display

7. Integrated MEE User Interface • User can build a virtual strip to handle everything in his daily life • A store can be linked to several web sites • use agents to go to various store to retrieve information • use wrapping technology to help infor. organization • use personal database to guide the display of the infor. • From office, the user can do all his work • contains a file system that can retrieve all user files • the physical files can be anywhere and files migrate when necessary if no conflicts (e.g.,security) • accesses to files in different file systems require virtual display support • On-line telephony to talk to others • Visualization support for cloth, furniture shops Book Store Cloth Store Office Repair Services Doctors

8. Integrated MEE User Interface Server User Server Integrated Interface A Personal Database

9. Integrated MEE User Interface • Information wrapping • define a standard framework for structuring any information site • break information to segments, tag the information, and define relationship of the information • potential candidate: XML • Personal database • define a framework for extracting and storing personal information • historical, user defined, specified on the fly • links, preferences, personal data • Information organization • define methods for information filtering and selection • e.g., for purchasing a book: filter out entries with price above range, select an entry if multiple are found, etc.

10. Research Projects • Information wrapping, retrieving, and organization • Personal Database • Information organization • Xiao-Dong Wang • Interface (Virtual Strip) • implement a tool (in Java) for construction of virtual city • modify netscape to allow invocation of the tool • for each block, set up links to web sites and to personal database • try to define the framework and entries in the personal database for the implementation of a virtual book store

11. Research Projects • File System • build a file system (as part of the personal database) • the file system stores tuples: (file name, location, software for accessing it, attributes) • when a file is accessed, the corresponding software to manipulate the file should be invoked locally or remotely • modify netscape to list files in the file system • modify netscape to fetch the file when a file is selected, if the access software is not local, then a virtual window should be used to display and manipulate the file • migration, replication, caching issues • Kelly Dougherty • the home page cannot migrate due to the fixed reference address

12. MEE Server Subsystem Model • Distributed servers • clustered locally • distributed over WAN • Distribution algorithms • help clients/agents get to the nearest node with the lowest load C C S S C WWW C S ... D D ... S S S

13. MEE Server Subsystem • Client sends agent to obtain services (instead of request) • agent could go to multiple sites to collect information • agent could replicate itself for fault tolerance • Server should support agent execution • security issues • agent migration C S S C agent S

14. Research Projects • Implement server subsystem • implement a randomized agent/request distribution algorithm • implement agent replication • implement agent migration • integrate the system with netscape and apache • Security for agent-based approach • authentication and code verification • Ajay Sachdev • Support web file system • implement a middleware that supports file system migration and replication among a give set of servers

15. Global Transaction Processing • Processing transactions involving multiple databases • interoperability, atomicity • Processing transactions on widely distributed systems • how to minimize the latency while assuring atomicity • Transaction processing on locally distributed systems • using a shared storage hierarchy (main memory + disk) • reliable shared storage (replicaiton)  Transfer $10K from a to b Deposite $10K to b in DB-B Deduct $10K from a in DB-A + fail

16. Research Projects • Implement a shared memory subsystem • application program define object space • one indexing system for each object space • indexing system is fully replicated on all servers • information for all object spaces is stored on all servers • objects space attributes • structure, memory/disk, replicated/single-copy, migratable • functions • object space definition functions (specify all attributes) • lock/unlock/read/write • execute an entire transaction on the object • object replication migration -- decision functions

17. Research Projects • Two phase commit protocol • implement on top of the shared storage system • TCB space in memory, primary-backup replication • index/lock space in memory, fully replicated on all servers • database on disk, none or RAID replication • periodic updatae RAID scheme (use time stamp to control) • Shian-Shing Shiu • Global transaction processing • transactions involving multiple databases

18. QoS Middleware • Integration of network level and system level QoS control • multimedia server admission control • integrated service • differentiated service • QoS for wireless networks • simulation of an algorithm • IP routing • IP look up • simulation to compare the performance of a few IP lookup algorithms Systems Layer Network Layer

19. Concurrent Control with Virtual Presence • Synchronize concurrent accesses • group requests and multicast multimedia information • Service admission control • Coordination among remotely controlled units • group and multicast common view • coordinate to achieve a common goal • e.g., tele-controlled vehicles C C WWW C S S D D D

20. Multimedia Education Systems • Algorithm Animation • e.g., animate the execution of a tree node deletion • implement a tool that supports algorithm animation • map program objects to graphical objects • insert action in program to display the program/graphics objects • insert interactive buttons for user control • insert parameterized speech for algorithm explaination • Web Lecture System • install the WLS software • examine the functions of client server interaction • examine the functions of video recording