Hi MNoor, This isn't really a Jess question, but perhaps I can help. The knowledge domain that you are seeking is called Operations Research. Here is a wikipedia reference to get you stated: http://en.wikipedia.org/wiki/Operations_research .
An objective function is what you minimize (in the case of cost) or maximize (in the case of profit, output, or other positive objective) -- in other words, you are trying to find the values for the independent variables in the objective function for which its value is optimum These inputs are often constrained over some domains like [0 <= number_of_CPUs <= 1000]. This optimization is an application of Linear Programming (LP). See http://en.wikipedia.org/wiki/Linear_programming . So, Is there a particular reason why you have to use rules to solve your problem? There is a whole branch of applied mathematics which is devoted to this exact kind of problem. Also, would you please send the *exact* wording of the problem you have been given? That way, I can say for certain whether or not an LP approach would be better. Cheers, Jason ----------------------------------------------------------- Jason Morris Morris Technical Solutions LLC http://www.morris-technical-solutions.com On Jan 8, 2008 10:55 AM, Mohd. Noor <[EMAIL PROTECTED]> wrote: > Dear all > > What is it means by cost or objective function? > > one more things. > How I am going to map (using rules) between two different attributes from > users and resources > let say user need to run the job and get results in 1 hour > but the resource available is represented in another attribute, say, the > number of CPU available is 100CPUs > > How I am going to translate and map this two different definition/schema > > Regards > > mnoor > --
