demo.m

install();
load ('data/synthetic.mat');

% train LMNN
L1 = lmnn2(x, y, 1, 'mu', 0.5, 'quiet', 1,'checkup',0);
% train U-LMNN
L2 = ulmnn2(u, x, y, 1, 'ep', 0, 'lambda', 2, 'mu', 0.5, 'quiet', 1,'checkup',0);

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y1 = -1.5; y2 = 1.5; x1 = -4;   x2 = 4;
hold on, axis square,
set(gca,'Box', 'on',...
    'XGrid', 'on',...
    'YGrid', 'on' , ...
    'YTick', y1:0.75:y2, ...
    'XTick', x1:2:x2, ...
    'LineWidth', 1, ...
    'XLim',[x1 x2], ...
    'YLim',[y1 y2]);
hcont(1)= plotDecisionBoundary(u', x', y, L1, 'k', 1, x1, x2, y1, y2);
hcont(2)= plotDecisionBoundary(u', x', y, L2, 'g',0, x1, x2, y1, y2);
h = legend(hcont, 'LMNN', '$\mathcal{U}$-LMNN');
set(h,'Interpreter','latex');

clear;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%