Encountered this error---Error, (in Optimization:-NLPSolve) could not store [HFloat(515427.81882622803)]-HFloat(27861.617865768) in a floating-point rtable

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Question:Encountered this error---Error, (in Optimization:-NLPSolve) could not store [HFloat(515427.81882622803)]-HFloat(27861.617865768) in a floating-point rtable

Posted: ogunmiloro 120 Product: Maple 18

August 21 2020

`Πh` := .1097250; mu := 0.863781636e-1; `Πm` := .15151; `μb` := .3333; k1 := .5905; k2 := .6905; k3 := .6302; omega := .701; Nh := 500; Nb := 500

(1)

times := [5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150, 155, 160, 165, 170, 175, 180, 185, 190, 195, 200, 205, 210, 215, 220, 225, 230, 235, 240, 245, 250, 255, 260, 265];

(2)

DE1 := diff(St(T), T) = `Πh`-a1*`βx`*St(T)*[(k1*IT(T)+k2*Mi(T)+omega(k3*Ib(T)+k2*Mi(T)))/Nh]-(mu+beta2*Ev(T))*St(T)+sigma*Th(T):

res := dsolve({DE1, DE2, DE3, DE4, DE5, DE6, DE7, ics}, parameters = [a1, `βx`, beta2, sigma, ro, `αo`, alpha1, r1, ko, eo, a2, `βy`], numeric);

(3)

sse := proc (a1, `βx`, beta2, sigma, ro, `αo`, alpha1, r1, ko, eo, a2, `βy`) local testRes; res(parameters = [a1, `βx`, beta2, sigma, ro, `αo`, alpha1, r1, ko, eo, a2, `βy`]); try testRes := add((C__f[i]-rhs(res(times[i])[3]))^2, i = 1 .. numelems(times)) catch "cannot evaluate the solution": testRes := 1000000000000 end try; return testRes end proc

optPars := Minimize(('sse')(a1, `βx`, beta2, sigma, ro, `αo`, alpha1, r1, ko, eo, a2, `βy`), initialpoint = {`βx` = 10.021, `βy` = 10.0212, a1 = 10.0114, a2 = 10.0119, alpha1 = 10.0432, beta2 = 10.0111, eo = 10.0114, ko = 10.0211, r1 = 10.0651, ro = 10.0601, sigma = 10.01030, `αo` = 10.0431}, assume = nonnegative, optimalitytolerance = 0.1e-4)

Error, (in Optimization:-NLPSolve) could not store [HFloat(515427.81882622803)]-HFloat(27861.617865768) in a floating-point rtable

Statistics:-ExponentialFit([`$`(1 .. nops(C__f))], C__f, T)

Error, (in Statistics:-ExponentialFit) invalid input: for this calling sequence, use a two-column Matrix

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Question: Encountered this error---Error, (in Optimization:-NLPSolve) could not store [HFloat(515427.81882622803)]-HFloat(27861.617865768) in a floating-point rtable

Question:Encountered this error---Error, (in Optimization:-NLPSolve) could not store [HFloat(515427.81882622803)]-HFloat(27861.617865768) in a floating-point rtable

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Question: Encountered this error---Error, (in Optimization:-NLPSolve) could not store [HFloat(515427.81882622803)]-HFloat(27861.617865768) in a floating-point rtable

Question:Encountered this error---Error, (in Optimization:-NLPSolve) could not store [HFloat(515427.81882622803)]-HFloat(27861.617865768) in a floating-point rtable

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