923452130

923452130 - COGS 102A Discussion Wednesday, October 5, 2011...

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Unformatted text preview: COGS 102A Discussion Wednesday, October 5, 2011 Jeremy Karnowski [email protected] Calibrated Peer Review (CPR) ● Feedback? ● The next steps - Your grades based on these 3 things: ○ You will be 'calibrated' : Do this carefully! ○ You will 'review your peers' : Apply rules to their paper ○ You will review yourself : Apply rules to your paper 4 Big Concepts to help you with CitW ● Physical Symbol System Hypothesis (PSSH) ● Marr's 3 Levels of Analysis ● Chinese Room Thought Experiment ● Material Anchors for Conceptual Blends Modeling Human Cognition From last time... Modeling Human Cognition ● Humans manipulate symbols to get get cognitive work done - very inventive ● This computer (they were new) also manipulates symbols and "can do anything" ● Maybe they are the same? Physical Symbol System Hypothesis (PSSH) ● Symbols: x,y,z, etc ● Expressions: x & y, x | y, x --> y, etc ● Designation: relation between symbol and what it symbolizes ● Interpretation: realizing the designations of expressions Designation Symbol Real World Interpretation Real World Symbol Physical Symbol System Hypothesis (PSSH) ● Hypothesis: The necessary and sufficient condition for a physical system to exhibit general intelligent action is that it be a physical symbol system. Brains = Computers? Marr's 3 Levels ● Computational - goal of the computation ● Algorithmic - how that goal gets accomplished ● Implementational - how the algorithm is physically realized Marr's 3 Levels ● Computational - goal of the computation ● Algorithmic - how that goal gets accomplished ● Implementational - how the algorithm is physically realized Example? Marr's 3 Levels ● Computational - goal of the computation ● Algorithmic - how that goal gets accomplished ● Implementational - how the algorithm is physically realized Example? ● I want to leave this classroom Marr's 3 Levels ● Computational - goal of the computation ● Algorithmic - how that goal gets accomplished ● Implementational - how the algorithm is physically realized Example? ● I want to leave this classroom ○ What's the goal? Marr's 3 Levels ● Computational - goal of the computation ● Algorithmic - how that goal gets accomplished ● Implementational - how the algorithm is physically realized Example? ● I want to leave this classroom ○ What's the goal? ○ How does that goal get accomplished? Marr's 3 Levels ● Computational - goal of the computation ● Algorithmic - how that goal gets accomplished ● Implementational - how the algorithm is physically realized Example? ● I want to leave this classroom ○ What's the goal? ○ How does that goal get accomplished? ○ How is that algorithm physically realized? Marr's 3 Levels - Individual Marr's 3 Levels - Collective Marr's 3 Levels - Collective Computational (p.52-58) ○ Three goals of the computation: ■ "Where am I?" (p. 52) ■ "Given that we are where we are, how shall we proceed in order to arrive at a particular somewhere else?" (p. 54) ■ "Given that we are where we are, where shall we proceed in a particular way for a particular period of time?" (p. 54) Algorithmic (p. 58-93) ○ Two ways to achieve the same computational goals: ■ Western way (p.58-65) ■ Micronesian way (p. 65-93) Implementational (p. 93-116 & Ch.3) ○ The types of physical tools you use matter! Certain maps exist for certain reasons West Wing - "Why are we changing maps?" http://www.youtube.com/watch?v=n8zBC2dvERM Chinese Room Thought Experiment ● Piece of paper with Chinese comes into room ● You take paper, manipulate symbols and turn it into a new set of paper ● You send paper outside ● Person outside remarks - "Wow, that's a clever remark!" ● Does the person understand? Thoughts? Chinese Room Thought Experiment ● Eliza - a Psychiatrist ○ http://www.manifestation.com/neurotoys/eliza.php3 ● RadioLab - Talking to Machines ○ http://www.radiolab.org/2011/may/31/ Material Anchors for Conceptual Blends Material Anchors for Conceptual Blends ● Constellations ● Lines at the ATM/Bank/Grocery Store ● Japanese Hand Calculator ● Compass Rose in Navigation Material Anchors for Conceptual Blends ● Human/Computer Analogy? ● Humans??? ● Weak DCog: Cognition is affected by or shaped by interactions with the material and social world. Action reveal underlying cognitive processes. ● Strong DCog: Some forms of human cognition are constituted in interactions of brain and body with material and social world. Action is a form of cognition. ...
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923452130 - COGS 102A Discussion Wednesday, October 5, 2011...

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