Search results
Results from the WOW.Com Content Network
While the chosen value is an invalid result for this operation, it might be a valid input to followup operations. For example in Python str.find returns −1 if the substring is not found, [2] but −1 is a valid index (negative indices generally start from the end [3]).
The strict definition of an undefined value is a superficially valid (non-null) output which is meaningless but does not trigger undefined behaviour. For example, passing a negative number to the fast inverse square root function will produce a number. Not a very useful number, but the computation will complete and return something.
In contrast to the mean absolute percentage error, SMAPE has both a lower and an upper bound. Indeed, the formula above provides a result between 0% and 200%. Indeed, the formula above provides a result between 0% and 200%.
When bootstrap aggregating is performed, two independent sets are created. One set, the bootstrap sample, is the data chosen to be "in-the-bag" by sampling with replacement.
Lodash is a JavaScript library that helps programmers write more concise and maintainable JavaScript. It can be broken down into several main areas: Utilities: for simplifying common programming tasks such as determining type as well as simplifying math operations.
The standard pow function and the integer exponent pown function define 0 0, 1 ∞, and ∞ 0 as 1. The powr function defines all three indeterminate forms as invalid operations and so returns NaN. Real operations with complex results, for example: The square root of a negative number. The logarithm of a negative number.
setx is idempotent because the second application of setx to 3 has the same effect on the system state as the first application: x was already set to 3 after the first application, and it is still set to 3 after the second application. A pure function is idempotent if it is idempotent in the mathematical sense. For instance, consider the ...
Whether a particular function or value is undefined, depends on the rules of the formal system in which it is used. For example, the imaginary number is undefined on the real number plane. So it is meaningless to reason about the value, solely within the discourse of real numbers.