103 lines
3.4 KiB
Matlab
103 lines
3.4 KiB
Matlab
function int = JEInterface(fhandle, range, varargin)
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% EvA2 Interface for Matlab
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% JEInterface(fhandle, range)
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% JEInterface(fhandle, range, defaultargs)
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% JEInterface(fhandle, range, defaultargs, options...)
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%
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% Arguments:
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% fhandle: a function handle defining the optimization target.
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% range: a 2 x dim array defining the solution subspace with lower and
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% upper bounds; or a scalar defining the bitwidth for binary
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% problems.
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% defaultArgs: (optional) additional constant argument to the target
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% function, empty by default.
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% options: (optional) options as name-value pairs defining optimization parameters,
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% especially tolerance and maximum function calls.
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% Check makeOoptions for default settings.
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%
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% Further options may be specified using setOptions with a JE options struct.
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% Main options are:
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% TolX: convergence criterion in the solution space
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% TolFun: convergence criterion in the target space
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% MaxFunEvals: maximum number of function evaluations
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% Display: 'off'/'final'/'notify'/'iter', where 'notify' corresponds to
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% displaying every k-th iteration, with k=10 as default.
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% The termination criterion of a run is a combination of the TolX, TolFun and
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% MaxFunEvals criteria. The run terminates if MaxFunEvals has been reached
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% or the best solution changes both in domain and codomain less than TolX
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% and TolFun for a certain number of evaluations, which may be set using
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% TolXEvals and TolFunEvals, respectively.
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% To ignore a criterion, set it to 0. E.g. to perform 10^5 evaluations in
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% any case, set TolX=TolFun=0 and MaxFunEvals=10^5.
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%
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% Define a 2 x dim range with a double valued function, or for
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% binary problems set a scalar as range defining the number of bits to be
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% used. The values passed to the function handle will then be arrays of
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% uint32, each of them representing 32 bits.
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int.args = [];
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int.opts = [];
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int.finished = 1;
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int.result = [];
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int.resultArr = [];
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int.f = '';
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int.dim = 0;
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int.range = [];
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int.mp = [];
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int.msg = '';
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int.funCalls = 0;
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int.mediator = '';
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int.optParams = [];
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int.optParamValues = [];
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int.hexMask=hex2dec('ffffffff');
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if (isa(fhandle, 'function_handle'))
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int.f = fhandle;
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else
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error('Wrong second argument type, expected function_handle');
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end
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disp('Setting up JEInterface...');
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if (isa(range, 'double') && (size(range,1) == 2))
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int.dim=size(range,2);
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int.range=transpose(range);
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s = sprintf('Double valued search space, dimension: %d', int.dim);
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disp(s);
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else
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if (length(range)==1)
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int.range=[];
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int.dim=range;
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s = sprintf('Binary valued search space, dimension: %d', int.dim);
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disp(s);
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else
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error('Wrong third argument type, expected double array of 2 x dim (double ranges) or scalar (binary bit width).');
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end
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end
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int = class(int,'JEInterface');
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int.opts = makeOptions(int);
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if (nargin>2)
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int.args = varargin{1};
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disp('Fitness function argument: '); disp(int.args);
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if (nargin > 3)
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if (rem(nargin,2)==0)
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error('Invalid number of arguments!');
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end
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disp('Reading options:');
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for i=2:2:nargin-2
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int=setOpt(int, varargin{i}, varargin{i+1});
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end
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end
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end
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display(getOptions(int));
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% finally create the java object
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int.mp = eva2.server.go.problems.MatlabProblem(int.dim, int.range);
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disp('Java object created');
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testEvalFunc(int);
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