dec 6
philosophy
- strong vs weak
- philosophy of mind
- mind/body problem
- Roger Penrose : quantum gives unpredictability and free will
- John Searle : chinese room
- functionalism
- artificial consciousness
- epistimology and semantic networks
computing power
- bandwidth - bits per second
virtual reality over-estimate:
600dpi at 12" for 90deg width is 1e4, so 1e8 pixels/image.
Then multiply by 8 bits for color
and 24 fps gives
for a total of about 2e10 bps (20Gbps),or 10GB per second.
This is far higher than signal coming out of our optic nerves,
both because we have this high a resolution only at center of view
(eye movement gives illusion of seeing it all this way), and because
of filtering/processing early on.
Actual data rate from human vision is measured to be around 10Mbps
Current CPU speed are in GHz range with 32 bit channels,
so are in this same 1e10 bps ballpark.
For comparison:
CD 0.3 Mbps
DVD 5 Mbps
blu-ray 50 Mbps
ethernet 10-1000 Mbps
GMAT automated essay grading
1e4
from the previous .pdf : "While the [...] details
remain trade secrets [...] text is parsed to flag
syntactic and grammetical structure [...] 500,000
unique word vocabulary and 16 million word concept
net [...] 500 linquistic and grammatical features
tagged [...] multiple mathematical models [...]
associate features extracted from the text with
scores in the training set [...] to yield a single
assigned score."
Overall the system replicates scores of human raters.
