Stores the NBest results for ASR Answers. Pretty typically, there will be only one NBest per interaction, but for systems using NBest (n > 1), each interaction will have multple entries in this tables.
| Column Name | Data Type | Data Length | Default Value | See Also |
|
NBestID |
INTEGER |
N/A |
N/A |
N/A |
|
AnswerID |
INTEGER |
N/A |
N/A |
|
|
Rank |
INTEGER |
N/A |
0 |
N/A |
|
AcousticModelScore |
FLOAT |
N/A |
-1 |
N/A |
|
AverageWordScore |
FLOAT |
N/A |
-1 |
N/A |
|
Noise |
FLOAT |
N/A |
-1 |
N/A |
|
UtteranceScore |
FLOAT |
N/A |
-1 |
N/A |
NBestID
| Foreign key | Reference table | Reference key |
|
AnswerID |
tblLVST_Answers |
AnswerID |
NBestID
Description:Autoincrementing primary key.
Constraint Name:N/A
Constraint Description:N/A
AnswerID
Description:Foreign key to tblLVST_Answers. Identifies the answer this NBest result is part of.
Constraint Name:N/A
Constraint Description:N/A
Rank
Description:Identifies the ordinal rank of this n-best result; a lower number indicates a higher rank, i.e. 0 here indicates 'First best', 1 indicates 'second best', etc.
Constraint Name:N/A
Constraint Description:N/A
AcousticModelScore
Description:The search probability of this NBest result. Care should be taken when comparing these numbers. Nearly everything affects this, including the size of the grammar, the length of the utterance, and the quality of acoustic models and dictionary. This number is typically *NOT* directly comparable to any other result, and the normalization required to make them comparable can be quite complex. Make sure you understand all of the factors before drawing conclusions between scores. If the field is set to -1, no acoustic model score was available.
Constraint Name:N/A
Constraint Description:N/A
AverageWordScore
Description:The average confidence score for all words in the raw text result. This number is very sensitive to outliers, like any average. Be careful about affording it too much importance. If this field is set to -1, the average word score was not avialable.
Constraint Name:N/A
Constraint Description:N/A
Noise
Description:Roughly, a signal-to-noise ratio (SNR). Measures how much of the result was attributed to noise versus actual speech. It has no noise score if it's value is -1.
Constraint Name:N/A
Constraint Description:N/A
UtteranceScore
Description:This combined measure is a look at how good a result the entire *utterance* is, based on combining scores from acoustics, confidence measures, grammars, etc. If the utterance score is not avialable, this field is set to -1.
Constraint Name:N/A
Constraint Description:N/A
Constraint Name:N/A
Constraint Description:N/A
Columns related:N/A