1.0 - 8.00 - HMMEvaluator Input - Teradata Vantage

Teradata® Vantage Machine Learning Engine Analytic Function Reference

Product
Teradata Vantage
Release Number
1.0
8.00
Release Date
May 2019
Content Type
Programming Reference
Publication ID
B700-4003-098K
Language
English (United States)
Table Description
InitStateProb InitStateTable, output by either HMMUnsupervised or HMMSupervised. For schema, see HMMUnsupervised Output or HMMSupervised Output.
TransProb StateTransitionTable, output by HMMUnsupervised or HMMSupervised.
EmissionProb EmissionTable, output by HMMUnsupervised or HMMSupervised.
observation Contains newly observed sequences. Has same schema as HMMUnsupervised Input table.

InitStateProb Schema

Column Data Type Description
model_key_attribute Any Model attribute in column specified by InitStateModelColumn argument.
state_key_attribute Any Symbol defining hidden state.
probability DOUBLE PRECISION Initial probability of hidden state.

TransProb Schema

Column Data Type Description
model_attribute Any Model attribute in column specified by TransAttributeColumn argument.
from_state_key_attribute Any Symbol defining hidden state from which a transition emanates.
to_state_key_attribute Any Symbol defining hidden state to which a transition is made.
probability DOUBLE PRECISION Probability of transition from from_state to to_state.

EmissionProb Schema

Column Data Type Description
model_attribute Any Model attribute in column specified by EmitModelColumn argument.
state_key_attribute Any Symbol defining hidden state.
observed_key_attribute Any Symbol defining observation value.
probability DOUBLE PRECISION Probability of emitting observed symbol, given that HMM is in hidden state.