Majority vote

Majority vote is a quality control method based on matching responses from the majority of performers who complete the same task. For example, if a task has an overlap of “5” and three performers selected the same answer, this is considered indirect confirmation of the correct response. Depending on the percentage of correct answers, increase the performer's skill value or ban them from tasks.

The rule takes effect when the number of responses for the task is equal to the overlap. To get the required number of responses faster, enable the Keep task order option in the pool settings.

Rule settings


Field	Description
Answer threshold	The number of matching responses that is considered the “majority vote” (for example, 3). The threshold should be less than or equal to the overlap.
History size	How many of the performer's recent responses in the project are used for the calculation. If the field is empty, the calculation is based on all the performer's responses in the pool.
If	A condition for performing the action in the then field: answer count — The number of completed tasks. % correct answers — The percentage of correct responses, meaning responses that matched the majority opinion (from 0 to 100). % incorrect answers — The percentage of incorrect responses, meaning responses that didn't match the majority opinion (from 0 to 100). To add multiple conditions, click .
then	Action to perform for the condition: set skill — Assign a skill constant value. Pause — Suspend the performer's access to the pool for the specified number of days. The ban reason is shown only to the requester. set skill from "If" — Save the performer's percentage of correct responses as the skill value. Ban — Block access to the project or all of the requester's projects for the specified number of days. The reason for banning is only shown to the requester. If access to tasks is blocked temporarily (for example, for 7 days), the history of the performer's responses is not saved after the ban is lifted. The skill value is calculated based on the new responses.


Field	Description
Answer threshold	The number of matching responses that is considered the “majority vote” (for example, 3). The threshold should be less than or equal to the overlap.
History size	How many of the performer's recent responses in the project are used for the calculation. If the field is empty, the calculation is based on all the performer's responses in the pool.
If	A condition for performing the action in the then field: answer count — The number of completed tasks. % correct answers — The percentage of correct responses, meaning responses that matched the majority opinion (from 0 to 100). % incorrect answers — The percentage of incorrect responses, meaning responses that didn't match the majority opinion (from 0 to 100). To add multiple conditions, click .
then	Action to perform for the condition: set skill — Assign a skill constant value. Pause — Suspend the performer's access to the pool for the specified number of days. The ban reason is shown only to the requester. set skill from "If" — Save the performer's percentage of correct responses as the skill value. Ban — Block access to the project or all of the requester's projects for the specified number of days. The reason for banning is only shown to the requester. If access to tasks is blocked temporarily (for example, for 7 days), the history of the performer's responses is not saved after the ban is lifted. The skill value is calculated based on the new responses.

Examples of rules

Examples are provided for simple classification. The number of tasks per page is 10.

Calculating a skill and banning for incorrect responses

Both rules work independently:

If the performer gives at least 3 responses to the tasks, the percentage of correct answers is written as the skill value.
If the performer gives at least 3 answers to tasks and the percentage of correct answers is less than 65%, they are banned on the project.

The calculation uses up to 10 performer's responses to the project tasks.

The performer is blocked after the first incorrect response to the first, second or third task. However, the skill isn't set. Since the ban reason is not specified, it is impossible to find out why the performer is banned.

All rules are applied independently:

If the performer gives at least 3 responses to the tasks, the percentage of correct answers is written as the skill value.
If the performer gives 2 incorrect responses to 3 tasks, they are blocked in the pool for 10 days.
If the performer gives 2 incorrect responses to 4 tasks, they are blocked in the pool for 10 days.
If the performer gives 5 or more responses to tasks and the percentage of correct responses is less than 80%, they are blocked in the pool for 10 days.

Such set of rules prevents performers from being blocked for one incorrect response and lets you maintain high accuracy.

Setting the skill

If the performer completes 3 tasks, the skill is set to the percentage of correct answers.

Use the skill value to set access to other pools with filters.

Example of filter settings

This rule will never take effect because the number of responses counted (History size) is less than the number of responses in the rule (answer count).

Blocking for incorrect responses

If the percentage of correct responses is less than 40%, the performer is blocked on the project for 30 days.

If the percentage of correct responses is less than 40%, the performer is blocked on the project for 30 days. The rule will work once — after the fifth response.