Prior probability

Term · Chemistry · MLC-T-CHM-009480

The probability assigned to a parameter or a hypothesis before any empirical evidence is taken into account. It represents the initial degree of belief in a proposition based on previous knowledge or a subjective assessment. In the context of Bayes's theorem, the prior probability is multiplied by the likelihood function to yield the posterior probability, which reflects the updated belief after considering new data.

Table 1. Record
Identifier	MLC-T-CHM-009480
Field	Chemistry
Subject	Chemistry and Human Health
References	PAC, 2016, 88, 239. 'Glossary of terms used in computational drug design, part II (IUPAC Recommendations 2015)' on page 253 (https://doi.org/10.1515/pac-2012-1204)
See also	Bayes’s theorem; Posterior probability

Record as JSON

{
  "id": "MLC-T-CHM-009480",
  "term": "Prior probability",
  "field": "Chemistry",
  "definition": "The probability assigned to a parameter or a hypothesis before any empirical evidence is taken into account. It represents the initial degree of belief in a proposition based on previous knowledge or a subjective assessment. In the context of Bayes's theorem, the prior probability is multiplied by the likelihood function to yield the posterior probability, which reflects the updated belief after considering new data.",
  "subject": "Chemistry and Human Health",
  "see_also": [
    "Bayes’s theorem",
    "posterior probability"
  ],
  "references": [
    "PAC, 2016, 88, 239. 'Glossary of terms used in computational drug design, part II (IUPAC Recommendations 2015)' on page 253 (https://doi.org/10.1515/pac-2012-1204)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/prior-probability/"
}

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