p,q rule

{
  "id": "MLC-T-CYB-003205",
  "term": "p,q rule",
  "field": "Cybersecurity",
  "definition": "It is assumed that out of publicly available information the contribution of one individual to the cell total can be estimated to within q per cent (q=error before publication); after the publication of the statistic the value can be estimated to within p percent (p=error after publication). In the (p,q) rule the ratio p/q represents the information gain through publication. If the information gain is unacceptable, the cell is declared as confidential. The parameter values p and q are determined by the statistical authority and, thus, define the acceptable level of information gain. In some [National Statistical Organizations] the values of p and q are confidential.",
  "synonyms": [
    "ambiguity rule"
  ],
  "references": [
    "NIST SP 800-188 from OECD Glossary of Statistical Terms",
    "NIST CSRC Glossary"
  ],
  "url": "https://mlchart.com/terminology/cybersecurity/p-q-rule/"
}