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Using software testing data collected, this paper established a software safety defects S curve model based on Weibull model theory. χ2 testing and prediction error testing are employed to verify the matching ability of the Weibull model and applicability of the predicting result. How to select truncation error is also discussed here. Results show that better predictive effect can be achieved...
Many researches on the prediction of the penetration rate of the tunneling boring machine (TBM) have been carried out. The prediction of the penetration rate will contribute to reduce the danger of TBM construction, decrease the cost and provide the support for the construction planning. Most methods for predicting penetration rate rely on the fixed equation relationship between the input parameters...
Because of the excellent performance of the HMM (hidden Markov model), it has been widely used in pattern recognition. Due to the high false alarm rate in the classical intrusion detection system (IDS) based on HMM, a fuzzy approach for the HMM, called fuzzy hidden Markov models (FHMM) is proposed. it is introduced with the fuzzy logic to the HMM. The robustness and accurate rate of the IDS based...
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