"Another thing you can try is partitioning your data--for instance if one of those independent variables has a large influence in the prediction, the value of that one independent variable may affect how other variables influence the predicted value.…"
"I've used both to solve large problems, and between the two, i would get price estimates for how you would need to configure your licenses (i know Xpress starts cheap but as you add features it get pretty comparable to CPLEX last i…"
"the March-April 2009 issue of 'Interfaces' contained an article ("A Plackett-Burmann Experiment to increase supermarket sales of a national magazine") describing how researchers used an experimental design and subsequent analysis…"
"> This seems to fall right in line with the type of problems you're interested. I'm also looking at designing casualty evacuation vehicles from a systems point of view (speed, range, capacity etc).
Sounds interesting and a challenge!…"
I'm conducting a simulation analysis of how different system characteristics of a casualty evacuation aircraft (speed, capacity, range, number of aircraft) affect system performance (delays, timing through different levels of care etc). The purpose of the study is not to determine the optimal or near optimal set of characteristics, but to determine the marginal benefit or penalty of each aircraft system characteristic to the patient compared to the current system, so that if and when the system…See More
I like the comment that you made, in some systems multiple models are required. This is true, however, a good way of tracking a model is to plot the model with the dependant variable as a function of time and note any differences. In certain cases it may be possible to isolate another independant variable.