OnlineTimingStats Class Reference

class OnlineTimingStats stores statistics from timing of online decoding, which will enable the Print() function to print out the average real-time factor and average delay per utterance. More...

#include <online-timing.h>

Collaboration diagram for OnlineTimingStats:

Public Member Functions
	OnlineTimingStats ()
void	Print (bool online=true)
	Here, if "online == false" we take into account that the setup was used in not-really-online mode where the chunk length was the whole file. More...

Protected Attributes
int32	num_utts_
double	total_audio_
double	total_time_taken_
double	total_time_waited_
double	max_delay_
std::string	max_delay_utt_

Friends
class	OnlineTimer

Detailed Description

class OnlineTimingStats stores statistics from timing of online decoding, which will enable the Print() function to print out the average real-time factor and average delay per utterance.

See class OnlineTimer.

Definition at line 41 of file online-timing.h.

Constructor & Destructor Documentation

OnlineTimingStats()

OnlineTimingStats

(

)

Definition at line 24 of file online-timing.cc.

                                    :
    num_utts_(0), total_audio_(0.0), total_time_taken_(0.0),
    total_time_waited_(0.0), max_delay_(0.0) {
}

Member Function Documentation

Print()

void Print

(

bool

online = true

)

Here, if "online == false" we take into account that the setup was used in not-really-online mode where the chunk length was the whole file.

We need to change the way we interpret the stats and print results, in this case.

Definition at line 29 of file online-timing.cc.

References KALDI_LOG, OnlineTimingStats::max_delay_, OnlineTimingStats::max_delay_utt_, OnlineTimingStats::num_utts_, OnlineTimingStats::total_audio_, OnlineTimingStats::total_time_taken_, and OnlineTimingStats::total_time_waited_.

Referenced by main().

                                        {
  if (online) {
    double real_time_factor = total_time_taken_ / total_audio_,
        average_wait = (total_time_taken_ - total_audio_) / num_utts_,
        idle_proportion = total_time_waited_ / total_audio_,
        idle_percent = 100.0 * idle_proportion;

    KALDI_LOG << "Timing stats: real-time factor was " << real_time_factor
              << " (note: this cannot be less than one.)";
    KALDI_LOG << "Average delay was " << average_wait << " seconds.";
    if (idle_percent != 0.0) {
      // If the user was calling SleepUntil instead of WaitUntil, this will
      // always be zero; so don't print it in that case.
      KALDI_LOG << "Percentage of time spent idling was " << idle_percent;
    }
    KALDI_LOG << "Longest delay was " << max_delay_ << " seconds for utterance "
              << '\'' << max_delay_utt_ << '\'';
  } else {
    // we have processed each utterance in one chunk.
    // the decoding code will have "pretended to wait" (using WaitUntil())
    // till the end of the utterance before starting to decode it.
    // We want to subtract this waiting time, which is not really
    // of interest in an offline scenario, before printing the
    // real-time factor.
    double real_time_factor = (total_time_taken_ - total_time_waited_) /
        total_audio_;
    KALDI_LOG << "Timing stats: real-time factor for offline decoding was "
              << real_time_factor << " = "
              << (total_time_taken_ - total_time_waited_) << " seconds "
              << " / " << total_audio_ << " seconds.";
  }
}

Friends And Related Function Documentation

OnlineTimer

friend class OnlineTimer

friend

Definition at line 49 of file online-timing.h.

Member Data Documentation

max_delay_

double max_delay_

protected

Definition at line 57 of file online-timing.h.

Referenced by OnlineTimer::OutputStats(), and OnlineTimingStats::Print().

max_delay_utt_

std::string max_delay_utt_

protected

Definition at line 58 of file online-timing.h.

Referenced by OnlineTimer::OutputStats(), and OnlineTimingStats::Print().

num_utts_

int32 num_utts_

protected

Definition at line 50 of file online-timing.h.

Referenced by OnlineTimer::OutputStats(), and OnlineTimingStats::Print().

total_audio_

double total_audio_

protected

Definition at line 52 of file online-timing.h.

Referenced by OnlineTimer::OutputStats(), and OnlineTimingStats::Print().

total_time_taken_

double total_time_taken_

protected

Definition at line 53 of file online-timing.h.

Referenced by OnlineTimer::OutputStats(), and OnlineTimingStats::Print().

total_time_waited_

double total_time_waited_

protected

Definition at line 54 of file online-timing.h.

Referenced by OnlineTimer::OutputStats(), and OnlineTimingStats::Print().

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The documentation for this class was generated from the following files:

• online2/online-timing.h
• online2/online-timing.cc