The earliest decision trees, producing systems of hard if–then rules, were still very similar to the old rule-based approaches. Only the introduction of hidden Markov models, applied to part-of-speech tagging, announced the end of the old rule-based approach.
The earliest decision trees, producing systems of hard if–then ru,les, were still very similar to the old rule-based approaches. Only the introduction of hidden Markov models applied to part-of-speech tagging announced the end of the old rule-based a,pproach.