search for: monomials

...e a vector of rate equation which will be passed into an ODE function and solved with associated functions from 'deSolve.' Roughly what this entails is scanning through a very large stoichiometric matrix containing integers which map metabolites to reactions and then assembling a series of monomials that describe the rates of the reactions. I'm running into trouble because R does not like doing numerical operations on characters, but I need the rate to be in symbolic form. Below I've described an example. The input is a matrix like this one, but a lot bigger: rxn1 rxn2 rxn...

Hello, I am using the mda package and in particular the fda routine to classify in term of gear a set of 20 trips. I preformed a flexible discriminant analysis (FDA) using a set of 151 trips. FDAT1 <- fda(as.factor(gear) ~ . , data =matrizR) A total of 22 predictors were considered. 20 of the predictors are "numeric" and 2 are "factors/discrete". The resulting FDA

...modify each model by the action of further parameters as: time changes: t -> t+omega, t -> omega*t, t -> t^omega model function change: G(t) -> sign(G(t))*|G(t)|^omega I plan to include models that can be generated by these actions from trig functions, some piecewise linear functions, monomials, and exponential function. My question is: what further parametric models are of sufficiently general interest to be included? Many thanks, Michael Meyer [[alternative HTML version deleted]]