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Emergence

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Emergence: a higher-level pattern arising out of parallel ... Pheromone trails. Each ant leaves a trail, and the other ants upon detection act accordingly ... – PowerPoint PPT presentation

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Title: Emergence


1
Emergence
  • A Bottom-up View of the World

2
Definition Emergence
  • Emergence a higher-level pattern arising out of
    parallel complex interactions between local
    agents.
  • Keys
  • No higher level intelligence or leader directing
    the group
  • Behavior is adaptive

3
Slime Molds
  • Found on the bark of trees
  • Normally independent
  • Under certain conditions
  • Move together as a group
  • Avoid danger
  • Move toward food sources
  • Demonstrates emergent behavior
  • No leader directing the group
  • Adaptive behaves in a way that facilitates
    survival

4
The Myth of the Ant Queen
  • The queen ant is commonly misunderstood to be the
    leader or director of a colony
  • Without a leader, worker ants act and behave in
    an organized, patterned way
  • Finding the most efficient route to food sources
  • Self-organizing numbers so just the right amount
    of ants handle food, protection, waste removal,
    etc.
  • How?
  • Pheromone trails
  • Each ant leaves a trail, and the other ants upon
    detection act accordingly

5
Common Themes
  • Feedback
  • Slashdot.org
  • Started out as a small web community
  • As it grew, spammers and trollers emerged making
    it difficult to weed out good information

6
Common Themes(cont)
  • Solution Potential Lieutenants
  • Registered users are randomly picked as
    lieutenants
  • As a lieutenant, the user can rate comments 1-5
    only a limited number of points may be given out,
    then the user loses lieutenant status
  • Better ratings on a users comments gives a
    greater chance of that person being picked as a
    lieutenant
  • Perpetuates competent raters and comments
  • Allows visitors to filter useless comments
  • Show comments with a rating 4 or higher
  • Show comments with a rating 3 or higher
  • Etc.

7
Common Themes(cont)
  • Control Artist
  • Mitch Resnick and StarLogo
  • Demonstrates slime mold cell behavior
  • Programmer is not directly in control
  • Shift in view of a computer programmer
  • Programmers are thought to be in pure control of
    a program
  • Future may be where programmers enter set
    parameters and indicate problem to be solved, and
    the program will do the rest

8
Consequences
  • New way of thinking about problems
  • NP Complete(Traveling Salesman)
  • New way of programming
  • Evolutionary software
  • Biology
  • Help in explaining
  • DNA similarities
  • How firing neurons mind
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