Method for forming a cohort for use in identification of an individual
US6081660A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1997 |
| Grant date | Jun 27, 2000 |
| Priority date | — |
| Expiry date | Aug 25, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L17/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of forming a cohort for use in identification of an individual by comparing a model of characteristics of the individual, such as a model of utterances, with models of the cohort including a model for the client in respect of whom it is desired to test whether the individual is identifiable. Models related to the population excluding the client are tested to determine whether they meet an acceptance threshold test as to identify with a model for the client. Then, from each meeting the threshold test, it is determined whether those models are distributed so as to present at least a substantial probability that models for nonmembers of the population spaced from the client model in all directions will each be closer to a member of the cohort, excluding the client, than to the client. If that probability is less than a predetermined value, a selection is made from the population of another cohort member which will reduce that probability. Alternatively, if the mentioned probability is less than the predetermined value, a "phantom" model is generated for inclusion in the population and which will reduce that probability. The method may employ both the described selection and "…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.