Pocketsphinx Android doesn't return probability. It is always 0.

[Yuri Kobets]

The probability of recognition results is always 0.

I am using Pocketsphinx for Android.

 recognizer = defaultSetup()
                .setAcousticModel(new File(assetsDir, "en-us-ptm"))
                .setDictionary(new File(assetsDir, "cmudict-en-us.dict")
                .setRawLogDir(assetsDir)
                .setKeywordThreshold(1e-15f)
                .setBoolean("-allphone_ci", true)

                .getRecognizer();
        recognizer.addListener(this);

Then I am trying to get probability of results and it always returns 0.

public void onResult(Hypothesis hypothesis) {
    Log.i(LOG_TAG, "1prob " + hypothesis.getProb() );
}

How can I get the right value of probability?

[Nickolay V. Shmyrev]

It depends on the search type you are using.

[Yuri Kobets]

I am using a grammar search.

File fieldGrammar = new File(assetsDir, "keywords.gram");
recognizer.addGrammarSearch(KEYWORD_SEARCH, keywordsGrammar);

What search type should I use to get probability results?

[Nickolay V. Shmyrev]

Confidence is not supported for grammar searches. Only in keyword or language model searches.