Research Article
Optimizing Hadoop Performance for Big Data Analytics in Smart Grid
Table 2
Mathematic functions used in GEP.
| Functions | Function descriptions | Input data types |
| plus | | Integer or float | minus | | Integer or float | multiply | | Integer or float | divide | | Integer or float | sin | | Integer or float | cos | | Integer or float | tan | | Integer or float | acos | | Integer or float | asin | | Integer or float | atan | | Integer or float | exp | returns the exponential | Integer or float | log | | Positive integer or float | log10 | returns the (base-10) logarithm of | Positive integer or float | pow | returns base raised to the power exponent | Integer or float | sqrt | | Positive integer or float | fmod | returns the floating-point remainder of (rounded towards zero) | Integer or float | pow10 | returns base 10 raised to the power exponent | Integer or float | inv | | Integer or float | abs | returns absolute value of parameter | integer | neg | ; | Integer or float |
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