From b538f11199b2c1d196682d9e4f7afcb4d41ce75c Mon Sep 17 00:00:00 2001
From: tanel <alumae@gmail.com>
Date: Fri, 7 Nov 2014 12:46:05 +0200
Subject: [PATCH] Experimenting with confidence threshold for updating
adaptation state
---
src/gstkaldinnet2onlinedecoder.cc | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/src/gstkaldinnet2onlinedecoder.cc b/src/gstkaldinnet2onlinedecoder.cc
index 6ffed6c..82cfe80 100644
--- a/src/gstkaldinnet2onlinedecoder.cc
+++ b/src/gstkaldinnet2onlinedecoder.cc
@@ -48,6 +48,7 @@
#include "./gstkaldinnet2onlinedecoder.h"
#include "fstext/fstext-lib.h"
+#include "lat/confidence.h"
namespace kaldi {
@@ -604,7 +605,15 @@ static void gst_kaldinnet2onlinedecoder_loop(
// Only update adaptation state if the utterance was not empty
// We might avoid updating the adaptation state if
// we felt the utterance had low confidence.
+ int32 num_paths;
+ std::vector<int32> best_sentence,second_best_sentence;
+ BaseFloat confidence = SentenceLevelConfidence(clat, &num_paths,
+ &best_sentence,
+ &second_best_sentence);
+ // FIXME: is 1.0 a good value?
+ if (confidence > 1.0) {
feature_pipeline.GetAdaptationState(&adaptation_state);
+ }
}
} else {
GST_DEBUG_OBJECT(filter, "Less than 0.1 seconds decoded, discarding");
--
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