CS 575 Spring 2010 2010-05 -15
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Transcript of CS 575 Spring 2010 2010-05 -15
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CS 575Spring 20102010-05-15
K.V. Bapa Rao
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Outline
• Administrative• Review of previous class• Student Presentations• Licklider’s papers• RDF Overview• General Discussion• Summary• Agenda for next meeting
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Administrative
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Student Presentations
• Hanish Patel: Psychological • Pratyush Mishra: Robotics• Jwalant Desai: Social Networking• Niteen Borge: Accessibility/ Handicapped
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REMINDER: A [flexible] structure for our study
• ‘Human issues’ is all-encompassing• Many interlocking dimensions• Human roles vis-à-vis the computer
– User– Inventor / researcher– Visionary– Content creator– Hacker– Criminal– Business person– Wealth generator– …
• Human-computer coupling– Symbiosis, tool, …
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A [flexible] structure for our study (contd)
• Domains of human activity– Education, Entertainment, Play, Family, Reproduction, Art ,Wealth generation,
Government, consumption, religion, philosophy, …• Values
– Many values depend on role, domain, …– Absolute values?– Creativity, aesthetics, access, opportunity, freedom, spirituality, rationality,
peace, brotherhood, prosperity, …• Vision, potentials, realities
– Babbage’s Analytical Engine, Bush’s Memex, …• Pragmatics
– Is it possible? How to get there?– Techniques, Design, Technology,
• Scaling and emergent phenomena– Will a whole new thing emerge if huge numbers of humans interact with
computers in a certain way? How do we understand that ‘thing’?• Other aspects, dimensions?
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Engelbart: Two-domain system
• H-LAM/T
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JCR Licklider: Human-computer symbiosis
• Issues– Speed mismatch– System requirements (hardware, memory, …)– Organizational mismatch: Memory organization
(Information structuring and retrieval)– Language mismatch• What versus how
– I/O mismatch• Voice, mobile, touch, …
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Computer as communication device
• “In a few years, men will be able to communicate more effectively through a machine than face to face”
• What is communication?– Two tape recorders exchanging data– Two humans having a meeting– Collaborative Modeling
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Licklider Contd--Economics
• Models are complex• Simplification is risky and dangerous– Oversimplification– Premature simplification
• Communicating models is expensive– Cost of not doing it?
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Licklider Contd
• Computer as switch vs. interactor• Distributed intellectual resources– ‘critical creative mass’
• Vision of internet– Store-and-forward technology
• Economics: billing models
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Vision of internet
• Node• Mediator for online life: OLIVER• Social groups• Better for individual• Better for society
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A Concrete Example: Overview of RDF
• http://www.w3schools.com/rdf/rdf_intro.asp
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Summary• Licklider thought through some of the issues of the
human-computer interface modeled by Engelbart, at one extreme (symbiosis)– Impedance mismatch
• RDF is a concrete example of the merger of communication and semantics for data (ref to Berners-Lee)
• Licklider’s vision of internet was based on a rich concept of communication
Led to TCP/IP
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Agenda for next week
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