CS 575 Spring K.V. Bapa Rao

Outline Administrative Review of previous class Student Presentations Licklider’s papers RDF Overview General Discussion Summary Agenda for next meeting

Administrative

Student Presentations Hanish Patel: Psychological Pratyush Mishra: Robotics Jwalant Desai: Social Networking Niteen Borge: Accessibility/ Handicapped

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, …

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?

Engelbart: Two-domain system H-LAM/T

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, …

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

Licklider Contd--Economics Models are complex Simplification is risky and dangerous – Oversimplification – Premature simplification Communicating models is expensive – Cost of not doing it?

Licklider Contd Computer as switch vs. interactor Distributed intellectual resources – ‘critical creative mass’ Vision of internet – Store-and-forward technology Economics: billing models

Vision of internet Node Mediator for online life: OLIVER Social groups Better for individual Better for society

A Concrete Example: Overview of RDF

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

Agenda for next week