The phrase "a defined set of rules" is correct and usable in written English.
You can use it when referring to a specific and clearly outlined collection of guidelines or regulations that govern behavior or procedures.
Example: "In order to ensure fairness in the competition, all participants must adhere to a defined set of rules established by the organizing committee."
Alternatives: "a clear framework of regulations" or "a specified collection of guidelines."
The importance here is that you have a defined set of rules from your auction and don't vary from those rules once you set them.
To accomplish proper guideline development the GWG recommends partnerships within and outside WHO according to a defined set of rules.
We have analysed our new dataset using a defined set of rules employed by the SRSF as a standard, reproducible approach to screen analysis.
In practice, clinicians estimate the rate of maintenance fluids (usually in the range of 1 to 3 ml/kg/hour) by estimating fluid loss, a task that is very difficult in a critically ill patient because of the absence of a defined set of rules and guidelines for specific patient subsets in various clinical scenarios.
Arnold and two other new directors – whose films are yet to appear – were challenged to make films using a clearly defined set of rules which included using the same group of characters.
"We are all working under a clearly defined set of rules and regulations set forth by the NFL in the collective bargaining agreement with the NFLPA". .
"War may or may not be immoral," he wrote, "but it should be fought within a clearly defined set of rules". Nicholas Goldberg is deputy editor of the editorial pages.
Service policy: Service policy defines set of rules associated with the service.
In the 28-minute long Two Pages for two keyboards, from 1968, a succession of five pitches is repeated without break, while being shortened, extended or reordered according to a defining set of rules, so the music seems to be simultaneously unchanging and in constant flux.
Traditionally, extracting free-text information has necessitated manual coding (where a researcher reads free-text and codes it by hand according to a defined set of coding rules) [ 8], which is time and labour intensive and therefore, not always feasible on a large scale.
Retrosynthesis algorithms [ 32] perform a backward search for biosynthetic routes leading from a target compound to the host metabolites through iterative application of a defined set of biochemical transformation rules.
