The Ad Agency AI Dictionary

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

G

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 “G”.

17 Terms in section G Updated May 2026

Gaussian Distribution

A common continuous probability distribution characterised by its bell shape; many models assume normality in errors.

Generalization

The ability of a model to perform well on new, unseen data rather than only on its training set.

Generative AI

A class of AI models that can produce new content such as text, images, video or code by learning underlying patterns in data

Generative Pre‑Training

Training a model on a large corpus of unlabelled data to learn general features before fine‑tuning on specific tasks.

Genetic Algorithm

An optimization method inspired by natural selection that evolves solutions by selection, crossover and mutation.

GEO (Generative Engine Optimization)

The practice of optimizing content and brand authority so AI-powered search engines like ChatGPT, Perplexity, and Google AI Overviews recommend your brand in their responses — not just rank it in traditional search.

Geo‑Targeting

Serving ads or content to users based on their geographic location, often combined with machine‑learning models to refine targeting.

Gini Impurity

A metric used in decision trees to measure how often a randomly chosen element would be incorrectly classified.

Global Optimization

Searching for the best solution across the entire parameter space rather than settling for a local optimum.

GPU Acceleration

Using graphics processing units to speed up parallelizable computations in AI workflows.

Gradient Descent

An algorithm for minimizing a function by iteratively moving in the direction of the steepest decrease.

Graph Neural Network

A neural architecture designed to work directly with graph‑structured data, such as social networks or knowledge graphs.

GraphRAG Inference

The answering stage of a retrieval system that draws on a knowledge graph of connected facts rather than just similar-looking text, letting it reason across relationships.

Greedy Algorithm

A strategy that makes the locally optimal choice at each step with the hope of finding a global optimum.

Grid Search

Systematically searching through a parameter space to find the best combination of hyperparameters for a model.

Ground Truth

The accurate, verified data used to train and evaluate models, often collected through human annotation.

Growth Hacking

Experimenting across marketing channels and product development to rapidly grow a customer base, increasingly supported by AI analytics.

Guardrails

Rules and limits placed around an AI system to keep its inputs and outputs safe, on-policy, and on-brand.

When the dictionary isn’t enough

Want your team to actually understand how to use these tools?

The dictionary defines the words. The Creative Cadence Workshop builds the practice. Eight weeks of hands-on AI training built for ad agencies and in-house creative teams.

Learn about the workshop