Which researchers are credited with showing how standard multiclass logistic regression could be applied to score enumerated dialog states in 2006?
Answer
Bohus and Rudnicky.
The transition toward a data-driven, discriminative foundation for Dialog State Tracking is often attributed to the crucial work performed by Bohus and Rudnicky in 2006. They demonstrated a practical path forward by applying standard multiclass logistic regression techniques. This method involved scoring a predetermined, fixed set of possible dialog states that were derived from the N-best hypothesis lists provided by the upstream ASR and SLU modules. This pioneering effort solidified the shift toward models learning parameters automatically to maximize predictive performance.
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