How are you using the values? How significant are the differences?
i am using these eigenvectors to do PCA on a set of images(of faces).I sort the eigenvectors in descending order of their eigenvalues and this is multiplied with the (orig data of some images viz a matrix)to obtain a facespace. like #pseudocode... sortedeigenvectors=mysort(eigenvectors) facespace=sortedeigenvectors*adjfaces /* adjfaces is a matrix */ if i do this in python i get a facespace [[-1028755.44341439, 1480864.32750018, 1917712.0162213, -983526.60328021, -1662357.13091294, -499792.41540038, 208696.97376238, -916628.92613255, -1454071.95225114, -1563209.39113008, -231969.96968212 , -768417.98606125] [ -866174.88336972, 1212934.33524067, 543013.86361006, -1352625.86282073, -309872.30710619 , 466301.12884198, 216088.93319292 ,-1512378.8688779, 2581349.03171275, 1797812.01270033, 1876754.7339826 , 751781.8166291 ] [ -57026.32567001 , -69918.94570563, -399715.51441018, -233720.8360051, 188227.41229887, 177341.47889165 , -65241.23138424 , -311917.28253664, 1133399.70627111, 1089028.99019462, 684854.41725944 , 413465.86494352] [ 405955.15245412, 562832.78296479 , 864334.63457882 , 629752.80210603, 894768.52572026, 578460.80766675 , 629146.32442893 , 768037.57754708, -485157.28573271, -1718776.11176486 , -780929.18155991 , -165391.19551137]] whereas the same steps in java [ [-516653.73649950844, 274000.54127598763, -108557.2732037272, -799041.4108906921, -495577.7478765989, -49125.38109725664, -162041.57505147497, -917033.3002665655, 1207264.8912226136, 1384551.3481945703, 1056098.9289163304, 357801.9553511339], [-956064.0724430305, 1424775.0801567277, 898684.8188346579, -1385008.5401600213, -514677.038573372, 387195.56502804917, 281164.65362325957, -1512307.8891047493, 2114204.697920214, 1280391.7056360755, 1650660.0594245053, 554096.482085637], [-666313.7580419029, 1365981.2428742633, 2011095.455319733, -453217.29083790665, -1199981.2283586136, -358852.32104592584, 375855.4012532809, -311436.16701894277, -2033000.776565753, -2418152.391663846, -847661.841421182, -926486.0374297247], [593030.0669844414, 121955.63569302124, 124121.99904933537, 697146.7418886195, 1321002.514808584, 743093.1371151333, 493712.52017493406, 767889.8563902564, 487050.6874229272, -641935.1621667973, -310387.14691965195, 246026.0999929544] ] such difference causes diff results in all calculations involving the facespace dn