Encoders

I have implemented Scalar, Category and MultiEncoder

Here is how to use them :

import sys
sys.path.extend(['../../ilib', '../../ilib/encoders', '../../ilib/modules'])
from scalar_encoder import *
from category_encoder import *
from multi_encoder import *

Scalar encoder

se = ScalarEncoder(minimum=0,maximum=100,vsize=100,spaOnbits=0.1)

se.encode(55)

49:50:51:52:53:54:55:56:57:58

se.decode(se.encode(55))

55.000

print se.info

> Scalar encoder -----
min-max/range : 0-100/100
buckets,width,n : 90,10,100
resolution : 1.11, 0.0111%
sparsity : 0.10, spa_nbits:10

Category encoder

cat = CategoryEncoder(ncats=5, vsize=50)

cat.encode(3)

30:31:32:33:34:35:36:37:38:39

se.decode(se.encode(3))

3.000

print cat.info

> Category encoder -----
Num of categories : 5
Num of bits : 50
sparsity : 0.20, spa_nbits:10

Multi encoder

multi = MultiEncoder(encoders=[se,cat])

multi.encode([55,3])

49:50:51:52:53:54:55:56:57:58:80:81:82:83:84:85:86:87:88:89

NotImplemented : multi.decode(multi.encode([55,3]))

print multi.info

=====================================
> Scalar encoder -----
min-max/range : 0-100/100
buckets,width,n : 90,10,100
resolution : 1.11, 0.0111%
sparsity : 0.10, spa_nbits:10
-----------------------------------
> Category encoder -----
Num of categories : 5
Num of bits : 50
sparsity : 0.20, spa_nbits:10
-----------------------------------
Total number of bits : 150
Sparsity : 0.133333333333
Sparse bits : 20

HTM Theory : short intro Spatial Pooler/Mapper