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Pyro - Python Robotics

Package pyrobot :: Package brain :: Module ravq
[frames | no frames]

Module pyrobot.brain.ravq

Classes
ARAVQ Extends RAVQ as described in Linaker and Niklasson.
ModelList  
RAVQ Implements RAVQ algorithm as described in Linaker and Niklasson.

Function Summary
  averageVector(V)
Determines the average vector of a set of vectors V.
  dec2bin(val, maxbits)
A decimal to binary converter.
  euclideanDistance(x, y, mask)
Takes two Numeric vectors as arguments.
  getDistance(V, X, mask)
d(V, X) = (1/|X|) Sum[i = 1 to |X|]{ min[j = 1 to |V|] {|| x_i - v_j||} } where x_i is in X and v_j is in V.
  logBaseTwo(value)
Returns integer ceil of log_2 of value.
  makeBitList(maxbits)
This version is much more flexible as it relies on a general function that takes any number and converts it to binary.
  makeNoisyList(ls, percentNoise, minVal, maxVal)
Returns a noisy version of the given list, and assumes a range of values between 0.0 and 1.0.
  makeNoisySequence(sequence, repeat, percentNoise)
Returns a noisy version of the given sequence, with each item repeated the number of times designated by the repeat variable.
  stringArray(a, newline, width, format)
String form of an array (any sequence of floats, really) to the screen.
  tooSmall(v)

Variable Summary
str __author__ = 'Jeremy Stober'
str __version__ = '$Revision: 1.51 $'

Function Details

averageVector(V) 

Determines the average vector of a set of vectors V.

dec2bin(val, maxbits=8) 

A decimal to binary converter. Returns bits in a list.

euclideanDistance(x, y, mask) 

Takes two Numeric vectors as arguments.
d(x, y) = sqrt(Sum[i = 1 to |x|]{(x_i - y_i) ^ 2 * mask_i})

getDistance(V, X, mask) 

d(V, X) = (1/|X|) Sum[i = 1 to |X|]{ min[j = 1 to |V|] {|| x_i - v_j||} }
where x_i is in X and v_j is in V.

logBaseTwo(value) 

Returns integer ceil of log_2 of value.
Python 2.3 should support different log bases.

makeBitList(maxbits=8) 

This version is much more flexible as it relies on a general function 
that takes any number and converts it to binary. You can make any 
size bit representation that you want: 
makeBitList(2) will give you: [[0, 0], [0, 1], [1, 0], [1, 1]] 
for example. Defaults to 8 bits.

makeNoisyList(ls, percentNoise=0.10000000000000001, minVal=0.0, maxVal=1.0) 

Returns a noisy version of the given list, and assumes a range
of values between 0.0 and 1.0.

makeNoisySequence(sequence, repeat, percentNoise=0.10000000000000001) 

Returns a noisy version of the given sequence, with each item
repeated the number of times designated by the repeat variable.

stringArray(a, newline=1, width=0, format='%4.4f ') 

String form of an array (any sequence of floats, really) to the screen.

Variable Details

__author__

Type:
str
Value:
'Jeremy Stober'

__version__

Type:
str
Value:
'$Revision: 1.51 $'

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Pyro - Python Robotics

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