# Clickthrough Rate Prediction eCTR() Function

(Redirected from pCTR() predictive model)

A Clickthrough Rate Prediction eCTR() Function is a predicted performance function for a clickthrough rate metric (to produce pCTR values).

**Context:**- It can range from being a Personalized pCTR() [math]p(click \mid item, context)[/math] to being a Population-level pCTR().
- It can range from being a Contextual pCTR() [math]p(click \mid item, user)[/math] to being an Non-Contextual pCTR().
- It can be produced by a Clickthrough Rate Prediction System (that solves a eCTR modeling task).
- It can be a type of a User-Item Relevance Estimation Function.

**Example(s):**- VigLink's pCTR().
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**Counter-Example(s):****See:**Consumer Experience Prediction Model.