Research Article
A Spatial-Contextual Indoor Trajectory Prediction Approach via Hidden Markov Models
Table 1
Notations used in the paper.
| Symbol | Description |
| | Wi-Fi access point in the shopping mall | | Similarity between access points according to their shop categories | | Trajectory point is a combination of and association time | | Similarity threshold between access points | | A sequence of time-ordered indoor trajectory points | | Indoor trajectory database | | Hidden states in the HMM | | Observation states in the HMM | | Initial probability of choosing state | | Probability of transforming form hidden state to hidden state | | Probability of transforming from hidden state to observation state | | Indoor Hidden Markov model | | The Hidden Markov model regarding shop category | | A group of trajectory points | | Threshold of time duration between two consecutive trajectory points |
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