Less than half of brands have ‘well-defined’ effectiveness function B2B brands are far less likely than those in B2C to have a dedicated, fully accountable marketing effectiveness team. By Charlotte ...

"Now that we have a well-defined function for ADAR1p110, we can work to understand its role in postnatal development and disease, in a particular cancer," added Nishikura. ### ...

We conclude that consistency violations not only preclude the estimation of well-defined causal effects but also compromise our ability to estimate even ill-defined causal effects.

In mathematics, a "well-defined" function is one where there is only 1 output for a given input (as a side note, you can have only single input functions, and still semantically get multiple ...