Humans' Deep Learning for Humans
Created by Maciej Sobczak
deep + learning (learnable) + human
DATA
new words in French
LEARNING
remembering the words
GOAL
getting high score on vocabulary test
DATA
technical specs
LEARNING
TDD
GOAL
pass the specs
All generalizations are false, including this one.
Mark Twain
the environment and generalization
The acquired skills should be useful also in the situations not encountered during the learning phase.
when generalization can occur?
- Invariance Assumption
- Learnable Regularity Assumption (detectable + detection algorithm is feasible)
P(no1sin100picks)≈P(no \: 1s \: in \: 100 \: picks) \approxP(no1sin100picks)≈
≈2×10−10=\approx 2 \times 10^{-10} =≈2×10−10=
=210000000000= \frac{2}{10000000000}=100000000002
P(no3sin100picks)≈P(no \: 3s \: in \: 100 \: picks) \approxP(no3sin100picks)≈
2×10−10=2 \times 10^{-10} =2×10−10=
=210000000000= \frac{2}{10000000000}=100000000002
...
97% confidence that after 100 picks one can see representative of 80% of the contents of the urn.
animal vs plant
features (20)
has ears, has leaves, is blue ...
number of species
1048576 (exponentially many!)
learnable
algorithm should learn from a number of examples that is polynomial in the number of the features and one can control the error, and insist that this control be again polynomial
only certain (very limited) classes of functions can fulfil the above (linear separator and conjuctions).
PAC
- learning process takes limited number of steps
- the computation requires only limited number of interactions with the world
- learning leads to categorization with small error rate
why the world around us is learnable?
breeding the intelligent systems = neuroevolution
can the representation be useful on its own?
use case: foreign language acquisition
- hierarchically driven: phonemes, chunking, words
- naturally unfolding examples
- don't be lazy e.g. motor cortex used
- interest driven: fight with the attention selecting mechanism
Big big thank you to Christopher Olah for his blog and permission to adapt some of his examples for this talk
Just as there are odors that dogs can smell and we cannot, as well as sounds that dogs can hear and we cannot, so too there are wavelengths of light we cannot see and flavors we cannot taste.
Why then, given our brains wired the way they are, does the remark “Perhaps there are thoughts we cannot think,” surprise you?
Evolution, so far, may possibly have blocked us from being able to think in some directions; there could be unthinkable thoughts.
Richard Hamming
55
Humans' Deep Learning for Humans
Created by Maciej Sobczak