Research Article
Application in Feature Extraction of AE Signal for Rolling Bearing in EEMD and Cloud Similarity Measurement
Table 4
Notation list of the mathematical symbols used in the analysis.
| | Mathematical symbol | Definition | Unit |
| | Expected value of cloud mode | — | | Entropy of cloud mode | — | | Hyperentropy of cloud mode | — | | Similarity threshold | — | | Embedding vector | — | | Time lag vector | — | | Tolerance level | — | | Length of time series | — | | Penalty factor | — | | Kernel parameter | — |
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