How about orthogonality? How about differences between PLS algorithms?

Leave a Comment / Applied math, Better words, Chemometrics / By

When good pre­dic­tive abil­ity is the one and only goal, it is per­haps less impor­tant to think about orthog­o­nal­ity. The rea­son is sim­ple: we decide to only think about the pre­dicted val­ues and we don’t care about look­ing at any­thing else in the mod­els we have cre­ated. When talk­ing about dif­fer­ences between dif­fer­ent lin­ear algorithms …

How about orthog­o­nal­ity? How about dif­fer­ences between PLS algo­rithms? Read More »

Creating transparent overlays for iMovie

Leave a Comment / Animation, Video / By

The trans­par­ent func­tion­al­ity is back again thanks to John Sadler, his excel­lent con­tri­bu­tion in the com­ments to get around a bug is marked red below. Thank you John. Some­times you want to add graph­ics on top of your iMovie. Maybe you want to show an arrow point­ing at some­thing, maybe you want to encir­cle some­thing or …

Cre­at­ing trans­par­ent over­lays for iMovie Read More »

Code for analytical separation videos

Leave a Comment / Animation, Applied math, Chemistry, Coding / By

My old videos about ana­lyt­i­cal sep­a­ra­tion processes should be added to this site. The scripts are still good and easy to mod­ify to sim­u­late dif­fer­ent sce­nario by chang­ing a few para­me­ters. When I first made them in 1996 and 1999, I saved them in mpeg1 for­mats. Nowa­days, other for­mats are more pop­u­lar, espe­cially MP4 that …

Code for ana­lyt­i­cal sep­a­ra­tion videos Read More »

Replace “independent variables” with “modeling variables”

Leave a Comment / Better words / By

The mean­ing of the words depen­dent and inde­pen­dent are not dif­fi­cult to under­stand. Inde­pen­dent sim­ply means not depen­dent. It could refer to a per­son, a mol­e­cule, a cell, a coun­try, or to any kind of object. The point is that it is not influ­enced or con­trolled by any­thing, except by itself. It is IN-depen­­dent. Of …

Replace “inde­pen­dent vari­ables” with “mod­el­ing vari­ables” Read More »

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