# Bayesianism

CEFR C1 · Noun

Source: https://englishreference.com/word/bayesianism
Updated: 2026-09-28

## Definition

a method of thinking and calculating where you update how much you believe something as new evidence appears.

For teachers: a philosophical and mathematical framework that interprets probability as a subjective degree of belief updated via Bayes' rule upon encountering new data.

## Examples

- Under Bayesianism, learning is seen as updating your beliefs when you see new evidence.
- Modern robotics relies heavily on Bayesianism to estimate a robot's location amid noisy sensor readings.
- Objective Bayesianism seeks non-informative priors to minimize subjective bias during continuous model parameter estimation.

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