|w| is really supposed to be ||w|| since vectors don't technically have
absolute values
************
We discussed this in class: technically yes, you're a little bit right. It's a common usage to write |w| instead of ||w|| for the very reason you mention: there's no such thing as the absolute value of a vector, so what else could |w| mean but ||w||. There's really no room for confusion so no harm in this usage.
No comments:
Post a Comment