The Ad Agency AI Dictionary

Common AI terms beginning with F, defined for advertising professionals.

F

Find the Flux+Form AI glossary & dictionary to help you make sense of common AI terms. Below you can find an AI Glossary & Dictionary for “F”.

22 Terms in section F Updated May 2026

Fairness Metrics

Quantitative measures used to evaluate whether an AI system produces equitable outcomes across different groups.

False Negative

A type of error where a model incorrectly predicts a positive case as negative, such as failing to flag a spam email.

False Positive

A type of error where a model incorrectly predicts a negative case as positive, such as flagging a legitimate message as spam.

Feature

An individual measurable property or characteristic of a phenomenon being observed.

Feature Engineering

The process of creating and selecting features that improve model performance.

Feature Importance

Metrics that quantify how much each feature contributes to a model’s predictions.

Federated Learning

A training approach where models are trained across multiple devices or servers holding local data sets, without centralising raw data

Feedback Loop

A cycle where a model’s predictions influence the data it receives, potentially reinforcing its own biases.

Feed‑Forward Network

A neural network architecture where information moves in one direction from input to output with no cycles.

Few‑Shot Learning

Techniques that enable models to learn new tasks from a very small number of labelled examples.

Filter

A convolutional kernel used in image processing to extract specific patterns such as edges or textures.

Fine‑Tuning

Taking a pre‑trained model and training it further on a specific task or data set to specialize its capabilities.

First‑Party Data

Information collected directly from your audience or customers, used to personalize marketing and avoid dependence on third‑party data.

Focal Loss

A loss function that down‑weights well‑classified examples to focus learning on difficult ones.

Forecasting

Using statistical methods or machine learning to predict future outcomes such as sales, demand or engagement.

Foundation Model

A large, pre‑trained model that can be adapted to a wide range of tasks, such as a general‑purpose language model.

Fourier Transform

A mathematical technique that decomposes signals into constituent frequencies; used in audio and image processing.

Framework

A set of libraries and tools that provide a structure for developing AI models and applications, like TensorFlow or PyTorch.

Frontier Model

A highly advanced AI model that pushes the limits of current capabilities, often requiring special governance.

Funnel Optimization

Analysing each stage of the marketing funnel and applying AI to improve conversion and retention rates.

Fuzzy Logic

Logic that allows reasoning with degrees of truth rather than strict binary decisions; used in recommendation systems.

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