%X80 Handwritten character dataset, 45 objects with 8 features in 3 classes % % A = X80 % % DESCRIPTION % Load the dataset in A. This is the 80X dataset, having 3 classes. % The 8 features are the distances from a bounding box to the % pixels of a set of handwritten characters 'X', '8' and '0', measured from % the corners along the diagonals and from the edge midpoints along the % horizontal and vertical central axes. % % REFERENCES % 1. R. Dubes and A.K. Jain, Clustering techniques: The user's dilemma, % Pattern Recognition, Volume 8, Issue 4, October 1976, Pages 247-260. % 2. A.K. Jain, R.C. Dubes, C.C. Chen, Bootstrap Techniques for Error Estimation % IEEE Trans. Pattern Anal. and Mach. Intel., 9(5), pp. 628-633, 1987. % % See also DATASETS, PRDATASETS, IMOX % Copyright: R.P.W. Duin, r.p.w.duin@prtools.org % Faculty EWI, Delft University of Technology % P.O. Box 5031, 2600 GA Delft, The Netherlands function a = x80; prdatasets('80x',1); a = pr_dataset('80x'); a = setname(a,'80X Dataset'); a = setlablist(a,str2mat('8','0','X')); a = setfeatlab(a,str2mat(... 'diagonal from top-left', ... 'vertical from top-center', ... 'diagonal from top-right', ... 'horizontal from right-center', ... 'diagonal from bottom-right', ... 'vertical from bottom-center', ... 'diagonal from bottom-left', ... 'horizontal from left-center'));