// doc/glossary.dox

// Copyright 2015 Johns Hopkins University (author: Daniel Povey)

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/**

\page glossary Glossary of terms

This page contains a glossary of terms that Kaldi users might want to know

about. The current content here consists just of a few examples; more content

will be added shortly. The easiest way to search in this page is to use the

search function of your browser. For convenience the definition of each

term's section is preceded and followed by a colon, so for

instance, typing ctrl-f ":lattice:" would take you to the section for "lattice".

<div style="text-indent: -1.5em; padding-left: 1.5em;">

<b>:alignment:</b> A representation of the sequence of HMM states taken by the

Viterbi (best-path) alignment of an utterance. In Kaldi an alignment is

synonymous with a sequence of <b>transition-ids</b>. Most of the time an

alignment is derived from aligning the reference transcript of an utterance,

in which case it is called a <b>forced alignment</b>. <b>lattices</b> also

contain alignment information as sequences of transition-ids for each word

sequence in the lattice. The program \ref bin/show-alignments.cc "show-alignments" shows

alignments in a human-readable format.

<b>:forced alignment:</b> see <b>alignment</b>.

<b>:lattice:</b> A representation of alternative likely transcriptions of an utterance, together

with associated alignment and cost information. See \ref lattices.

<b>:transition-id:</b> a one-based index that encodes the pdf-id (i.e. the clustered context-dependent HMM state),

the phone identity, and information about whether we took the self-loop or forward transition in the HMM.

Appears in lattices, decoding graphs and alignments. See \ref transition_model.

<b>:transition model:</b> The TransitionModel object encodes the transition probabilities

of the HMMs, and also various other important integer mappings; see \ref transition_model.

This object is generally written at the start of model files. The program

\ref bin/show-transitions.cc "show-transitions" shows these.

</div>

*/