Mathematical Problems in Engineering / 2015 / Article / Tab 1

Research Article

Hidden Semi-Markov Models for Predictive Maintenance

Table 1

State recognition accuracy.
(a) Continuous observations

Test case Duration distribution
Gaussian Gamma Weibull

1 99.4% 98.5% 99.2%
2 99.7% 98.6% 99.5%
3 99.4% 99.2% 99.7%
4 98.9% 98.9% 99.7%
5 98.2% 98.9% 100%
6 99.1% 98.8% 99.7%
7 98.5% 99.4% 99.7%
8 99.2% 99.1% 99.5%
9 99.2% 98.6% 99.7%
10 99.2% 99.1% 99.5%
Average 99.1% 98.9% 99.6%

(b) Discrete observations

Test case Duration distribution
Gaussian Gamma Weibull

1 97.4% 96.7% 97.4%
2 97.2% 97.6% 96.5%
3 99.4% 95.8% 96.6%
4 98.2% 95.3% 97.7%
5 99.1% 97.4% 97.5%
6 97.8% 97.7% 97.8%
7 95.8% 97.2% 96.6%
8 97.7% 96.4% 97.2%
9 98.9% 97.2% 98.5%
10 99.2% 95.6% 96.9%
Average 98.1% 96.7% 97.3%

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