"It is not uncommon for an analyst to conduct a supervised analysis of data to detect which predictors are significantly associated with the outcome. These significant predictors are then used in a visualization (such as a heat map or cluster analysis) on the same data. Not surprisingly, the visualization reliably demonstrates clear patterns between the outcomes and predictors and appears to provide evidence of their importance. However, since the same data are shown, the visualization is essentially cherry picking the results that are only true for these data and which are unlikely to generalize to new data."

Wrote Max Kuhn @topepo and Kjell Johnson, 2019, in "Feature Engineering and Selection: A Practical Approach for Predictive Models" https://bookdown.org/max/FES/

#correlations #NoFreeLunch #electricity #agriculture #livestock #renewables #dataViz #emissions #GHG #methane #GreenhouseForcing #dataScience #featureEngineering #correlation

/3
The cure for political scurvy is not for the rich to ignore the poor,
but for everyone to redefine the national purpose.[4]

If we decide that every Canadian must be well housed, well fed &
well cared for, then we will live in a nation as healthy as ourselves.

#USpol #CanPol #politics #FoodSecurity
#PoliticalCorruption #PoliticalApathy #SocialAlienation #populism #NoFreeLunch
#FailureToGovern #FailureToLead
#billionaires #capitalism #corporations #profiteering #oligarchy #libertarianism

Scurvy in Canada Is a Symptom of Our Sick Politics
https://mastodon.social/@persagen/113595618972941643

* reveals how we approach fairness & human rights

#USpol #CanPol #politics #FoodSecurity #scurvy
#PoliticalCorruption #apathy #PoliticalApathy #SocialAlienation #populism #NoFreeLunch
#FailureToGovern #FailureToLead