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Glossary

Agent-based modelling (ABM)

A computational model for simulating the actions and interactions of autonomous agents, which can be individual entities or groups like organisations, to understand the behaviour of a system and what governs its outcomes.

Aggregate data

Aggregate or macro data are data about populations, groups, regions or countries. These are data that have been averaged, totalled or otherwise derived from the individual level data found in the survey datasets.

AI hallucinations

Outputs from AI models that appear confident and plausible but are completely fabricated or incorrect. 

Algorithmic transparency

The principle of making computational systems, AI, and automated decision-making processes understandable, accessible, and open to review.

Analytical process

In quantitative computational research, the analytical process is a systematic approach for examining data, assessing relationships, and exploring trends to derive meaningful insights. This process typically involves steps such as data discovery, data cleaning, modeling, and interpretation.

API (Application Programming Interface)

A set of rules and protocols enabling various software applications to communicate and securely exchange data. In research and data analysis, APIs help learners retrieve data from online platforms, databases, or other digital services for analysis. This facilitates hands-on experience with real-world data and supports skill development in data extraction and manipulation.

Artificial Intelligence (AI)

AI refers to the ability of computer systems to perform tasks typically associated with human intelligence, including learning, reasoning, problem-solving, perception, and decision-making.

Attrition

Sample attrition refers to the loss of study units from a sample after an initial wave of data collection. For example, individuals who take part in a first wave of a longitudinal study dropping out at a sunsequent wave.

Augmented data

Data created by adding new records to an existing dataset in order to increase dataset size, address gaps, or improve the performance of machine learning models. These additional records are typically generated from or based on the original data and are designed to resemble or preserve its key characteristics. See also observed data and synthetic data.

Augmented reality (AR)

Augmented reality refers to the real-time integration of digital information into a user’s environment. This technology superimposes digital content onto the real world, enhancing the user’s perception without replacing their view of reality.

Automation

The application of technology, programs, robotics, or processes to achieve outcomes with minimal human input.

Autonomous agent (reinforcement learning)

A system that makes decisions and takes actions within an environment without direct human guidance, learning from rewards or penalties to improve its performance. For example, a self-driving car continuously decides how to navigate based on sensor input. See also Reinforcement learning.