Package nltk :: Module probability :: Class ConditionalProbDistI

Class ConditionalProbDistI

object --+
         |
        ConditionalProbDistI

Known Subclasses:

A collection of probability distributions for a single experiment run under different conditions. Conditional probability distributions are used to estimate the likelihood of each sample, given the condition under which the experiment was run. For example, a conditional probability distribution could be used to estimate the probability of each word type in a document, given the length of the word type. Formally, a conditional probability distribution can be defined as a function that maps from each condition to the ProbDist for the experiment under that condition.

Instance Methods

[hide private]

__init__(self)
x.__init__(...) initializes x; see x.__class__.__doc__ for signature

source code

ProbDistI

__getitem__(self, condition)
Returns: The probability distribution for the experiment run under the given condition.

source code

int

__len__(self)
Returns: The number of conditions that are represented by this ConditionalProbDist. source code

list

conditions(self)
Returns: A list of the conditions that are represented by this ConditionalProbDist. source code

Inherited from object: __delattr__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __repr__, __setattr__, __str__

Properties

[hide private]

Inherited from object: __class__

Method Details

[hide private]

init(self)
(Constructor)

source code

x.__init__(...) initializes x; see x.__class__.__doc__ for signature

Overrides: object.__init__: (inherited documentation)

getitem(self, condition)
(Indexing operator)

source code

Parameters:

condition (any) - The condition whose probability distribution should be returned.

Returns: ProbDistI

The probability distribution for the experiment run under the given condition.

len(self)
(Length operator)

source code

Returns: int: The number of conditions that are represented by this ConditionalProbDist.

conditions(self)

source code

Returns: list: A list of the conditions that are represented by this ConditionalProbDist. Use the indexing operator to access the probability distribution for a given condition.

Class ConditionalProbDistI

__init__(self) (Constructor)

__getitem__(self, condition) (Indexing operator)

__len__(self) (Length operator)

conditions(self)

init(self)
(Constructor)

getitem(self, condition)
(Indexing operator)

len(self)
(Length operator)