topic Re: ensemble models in SAS Data Science

ensemble models

frupaul — Thu, 27 Apr 2017 10:24:22 GMT

Hi everyone,

I passed my Predictive modeller (SAS EM 13.1) exam about 6 months ago, and have managed to get into a data science role. I never really understood how ensemble models fit into the process flow in SAS EM. Which of the two obtions describe how they fit in the process flow:

a. The ensemble model note comes before the models, and then connects to the various models. e.g Ensemble model>>>>>>Linear Regression model

b. The ensemble model comes after the models, in a similar manner to the model comparison node. e.g Models>>>>>ensemble model

Your response will be much appreciated.

Thanks,

Paul

Re: ensemble models

WendyCzika — Thu, 27 Apr 2017 13:47:17 GMT

b - you connect multiple modeling nodes to an Ensemble node similar to Model Comparison.

See this paper for some examples: https://support.sas.com/resources/papers/proceedings14/SAS133-2014.pdf

And this paper and post for more advanced ensemble models:

https://support.sas.com/resources/papers/proceedings16/SAS3120-2016.pdf

https://communities.sas.com/t5/SAS-Communities-Library/Quick-guide-to-implementing-advanced-ensemble-methods-in-SAS/ta-p/270341

Re: ensemble models

frupaul — Thu, 27 Apr 2017 14:04:41 GMT

Hi Wendy,

Thanks for the papers. They all look like easy reads.

Thanks