CGSC170 Lecture 6: CGSC170 CRUM

• School: University of Delaware
• Department: Cognitive Science
• Course: CGSC170
• Professor: Andreasen Robin

Document Summary

Classical/digital computer: a formal symbol manipulator that transforms digital symbols. Historically digital computers were serial processors; they are no capable of parallel processing. Analog: does not have discrete boundaries (continuous info) Parallel processing: multiple processing steps going on at the same time. Ex: trying to process language, you use visual and audio inputs at the same time including gestures to better reach an understanding. E(cid:454): s(cid:455)(cid:374)ta(cid:454) a(cid:374)d se(cid:373)a(cid:374)tics se(cid:373)a(cid:374)tics=represe(cid:374)tatio(cid:374)s, s(cid:455)(cid:374)ta(cid:454) sho(cid:449)(cid:374) i(cid:374) se(cid:374)te(cid:374)ce trees, syntax operates on the phrases not on individual words (procedural memory) Serial processing: each step follows one at a time, no skipping steps, each step acts as an input for the next step. Ex: search in the memory system (its exhaustive) Formal symbol manipulator: computations act on symbols independent of content. Logic- an argument is (in)valid solely in terms of its loyal form. Goal of syntactic system: a well formed sentence. Goal of semantic system: has meaning (combined = a good sentence) like with logic.