nltk.collocations.QuadgramCollocationFinder

class documentation

class QuadgramCollocationFinder(AbstractCollocationFinder): (source)

Constructor: QuadgramCollocationFinder(word_fd, quadgram_fd, ii, iii, ...)

View In Hierarchy

A tool for the finding and ranking of quadgram collocations or other association measures. It is often useful to use from_words() rather than constructing an instance directly.

Class Method from_words Undocumented
Method __init__ Construct a QuadgramCollocationFinder, given FreqDists for appearances of words, bigrams, trigrams, two words with one word and two words between them, three words with a word between them in both variations.
Method score_ngram Undocumented
Class Variable default_ws Undocumented
Instance Variable ii Undocumented
Instance Variable iii Undocumented
Instance Variable iixi Undocumented
Instance Variable ixi Undocumented
Instance Variable ixii Undocumented
Instance Variable ixxi Undocumented

Inherited from AbstractCollocationFinder:

Class Method from_documents Constructs a collocation finder given a collection of documents, each of which is a list (or iterable) of tokens.
Method above_score Returns a sequence of ngrams, ordered by decreasing score, whose scores each exceed the given minimum score.
Method apply_freq_filter Removes candidate ngrams which have frequency less than min_freq.
Method apply_ngram_filter Removes candidate ngrams (w1, w2, ...) where fn(w1, w2, ...) evaluates to True.
Method apply_word_filter Removes candidate ngrams (w1, w2, ...) where any of (fn(w1), fn(w2), ...) evaluates to True.
Method nbest Returns the top n ngrams when scored by the given function.
Method score_ngrams Returns a sequence of (ngram, score) pairs ordered from highest to lowest score, as determined by the scoring function provided.
Instance Variable N Undocumented
Instance Variable ngram_fd Undocumented
Instance Variable word_fd Undocumented
Class Method _build_new_documents Pad the document with the place holder according to the window_size
Static Method _ngram_freqdist Undocumented
Method _apply_filter Generic filter removes ngrams from the frequency distribution if the function returns True when passed an ngram tuple.
Method _score_ngrams Generates of (ngram, score) pairs as determined by the scoring function provided.
@classmethod
def from_words(cls, words, window_size=4): (source)

Undocumented

def __init__(self, word_fd, quadgram_fd, ii, iii, ixi, ixxi, iixi, ixii): (source)
overrides nltk.collocations.AbstractCollocationFinder.__init__

Construct a QuadgramCollocationFinder, given FreqDists for appearances of words, bigrams, trigrams, two words with one word and two words between them, three words with a word between them in both variations.

def score_ngram(self, score_fn, w1, w2, w3, w4): (source)

Undocumented

default_ws: int = (source)

Undocumented

ii = (source)

Undocumented

iii = (source)

Undocumented

iixi = (source)

Undocumented

ixi = (source)

Undocumented

ixii = (source)

Undocumented

ixxi = (source)

Undocumented