January 2012

[SOLVED] SugarSync on Mac puts files in Trash, “alias” problems

Leave a Comment / Cloud, Coding / By

Like many oth­ers, I have started using cloud ser­vices to sync my data across com­put­ers. Although there are many nice alter­na­tives like Drop­box and so on, my choice until now is Sug­ar­Sync. It is very nice and it has com­pletely removed the man­ual copy­ing of files using FTP that I used to do. I really …

[SOLVED] Sug­ar­Sync on Mac puts files in Trash, “alias” prob­lems Read More »

The numerical estimate of matrix rank

Leave a Comment / Applied math, Chemometrics, Coding / By

The most com­monly used func­tion to cal­cu­late the matrix rank is prob­a­bly the one in the MATLAB soft­ware pack­age [1]. It is based on the cal­cu­la­tion of sin­gu­lar val­ues of the matrix A, and the num­ber of sin­gu­lar val­ues that are greater than some tol­er­ance defines the rank. The algo­rithm is sim­ple: r = svd(A); …

The numer­i­cal esti­mate of matrix rank Read More »

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