HMMEvaluator Syntax - Teradata Vantage

Machine Learning Engine Analytic Function Reference

Product
Teradata Vantage
Release Number
8.00
1.0
Published
May 2019
Language
English (United States)
Last Update
2019-11-22
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blj1506016597986.ditamap
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B700-4003
lifecycle
previous
Product Category
Teradata Vantage™

Version 1.8

SELECT * FROM HMMEvaluator (
  ON input_table AS InitStateProb PARTITION BY model_key 
  ON state_transition_table AS TransProb PARTITION BY model_key 
  ON emission_table AS EmissionProb PARTITION BY model_key 
  ON observation_table AS observation PARTITION BY model_key 
    ORDER BY time_ordered_sequence_column ASC [,...]
  USING
  InitStateModelColumn ('model_key_column')
  InitStateColumn ('state_key_column')
  InitStateProbColumn ('init_state_probability')
  TransAttributeColumn ('model_key_column')
  TransFromStateColumn ('from_state_key_column')
  TransToStateColumn ('to_state_key_column')
  TransProbColumn ('trans_probability')
  EmitModelColumn ('model_key_column')
  EmitStateColumn ('state_key_column')
  EmitObsColumn ('observed_key_column')
  EmitProbColumn ('emit_probability')]
  ModelColumn ('model_column')
  SeqColumn ('seq_column')
  ObsColumn ('observed_key_column')
  [ Incremental ({'true'|'t'|'yes'|'y'|'1'|'false'|'f'|'no'|'n'|'0'}) ]
  [ ShowChangeRate ({'true'|'t'|'yes'|'y'|'1'|'false'|'f'|'no'|'n'|'0'}) ]
  [ SeqProbColumn ('sequence_probability_column') ]
  [ SkipColumn ('skip_key_column') ]
  [ Accumulate ({ 'accumulate_column' | accumulate_column_range }[,...]) ]
) AS alias;