원문정보
초록
영어
Hidden Markov Model is an important approach applied to activity recognition. In the first- order Hidden Markov Model, there is the hypothesis that the transition probability of state and the output probability of observation are only dependent on the current state of the model, which debases the precision of information extraction comparatively. In second- order Hidden Markov Model, the relevance between the current state and its previous two states is considered. Also, the relevance between the current observation and its previous state is considered. So second-order Hidden Markov Model has stronger performance of recognition of incorrect information. In my paper, second-order Hidden Markov Model is applied to activity recognition. The experiments show that our approach has higher precision than those approaches based on first-order Hidden Markov Model and based on Conditional Random Fields.
목차
1. Introduction
2. Related Work
3. Activity Recognition in Smart Homes
4. Second-Order Hidden Markov Model and its Application in Activity Recognition
4.1. One-Order Hidden Markov Model (HMM(1))
4.2. Second-Order Hidden Markov Model(HMM(2))
4.3. Viterbi(2) Algorithm
4.4. Algorithm of Activity Recognition
5. Experiments
5.1. Raw Data for Experiments
5.2 Measurement Criteria
5.3. Experiment Result
6. Conclusion and Future Work
Acknowledgements
References