On 01/26/2015 01:37 PM, Antoine Pitrou wrote:
On Mon, 26 Jan 2015 11:26:59 -0800 Chris Barker<chris.barker@noaa.gov> wrote:
Simplicity has its virtues.
But which is more simple? I came to the conclusion that the asymmetric was simpler to explain and reason about in any case.
Symmetricity removes any uncertainty as to parameter order.
Correct, it uses either the closer or further from zero value. But it seems to me it's not better than just using the asymmetric one as if it was a symmetric function. The difference is you have both options with the asymmetric version, including alternating the order if you want. Or, a symmetric version can use an average, in which case it can't be used for anything other than relative distance comparisons. (Not relative value comparisons.) Ron