topic Question about the HP Neural Network Node in SAS Academy for Data Science

Question about the HP Neural Network Node

WWD — Sat, 20 Apr 2019 22:05:47 GMT

In Module 4, chapter 6, the subsection that presents parallel processing the task of building/training a neural network model, the instructor explains information panel for the HPNN node. Within this panel, there are two areas that allow the user to modify the algorithm.

In the section titled “Network Options”, the user can specify the architecture and the number of hidden layers. In the example, the instructor used the setting of “architecture” equal to “One Layer” and the “number of hidden layers” equal to 3.

My question is “Doesn’t the ‘One Layer’ setting indicate that there will be ONLY one hidden layer?” If the answer is yes, then does SAS disregard hidden layers set to 3?

Re: Question about the HP Neural Network Node

Cynthia_sas — Mon, 22 Apr 2019 00:01:23 GMT

Hi:
We've asked the instructors for the course to take a look at your question. Someone will post a response.
Cynthia

Re: Question about the HP Neural Network Node

JThompson — Mon, 22 Apr 2019 14:32:17 GMT

If you look at the property "number of hidden layers" it is shaded in grey. This means that the property is not being used (it is ignored for the current run). The property "architecture" is white so it is being used. The neural network will have one hidden layer due to the active property of "architecture". To activate the "number of hidden layers" property you would need to set "architecture" to "user defined". This would then activate the "number of hidden layers" property (it would turn white) and then its value would be used.

So keep in mind that for Enterprise Miner, anytime a property is colored in grey, it is ignored.

Hope this helps!

Re: Question about the HP Neural Network Node

WWD — Thu, 25 Apr 2019 12:41:42 GMT

Thank you. I’m good to go.