Word-specific information for recognized words. Word
information is only included in the response when certain request
parameters are set, such as enable_word_time_offsets.
Time offset relative to the beginning of the audio, and
corresponding to the end of the spoken word. This field is
only set if enable_word_time_offsets=true and only in the
top hypothesis. This is an experimental feature and the
accuracy of the time offset can vary.
Output only. The confidence estimate between 0.0 and 1.0. A
higher number indicates an estimated greater likelihood that
the recognized words are correct. This field is set only for
the top alternative. This field is not guaranteed to be
accurate and users should not rely on it to be always
provided. The default of 0.0 is a sentinel value indicating
confidence was not set.
