Module lattice

Word lattices for speech recognition.

Includes routines for loading lattices in Sphinx3 and HTK format.

Version: 05-631 local version

Author: David Huggins-Daines <dhuggins@cs.cmu.edu>

Classes

Dag
Directed acyclic graph representation of a phone/word lattice.

Functions

float

logadd(x, y)
For x=log(a) and y=log(b), return z=log(a+b).

source code

boolean

is_filler(sym)
Returns true if sym is a filler word. source code

Variables

LOGZERO = -100000

Function Details

For x=log(a) and y=log(b), return z=log(a+b).

Parameters:

Returns: float

log(a+b)

Returns true if sym is a filler word.

Parameters:

Returns: boolean

True if sym is a filler word (but not <s> or </s>)