# Which Algorithm
**URL:** https://community.drivendata.org/t/which-algorithm/2037
**Category:** Pover-T Tests: Predicting Poverty
**Created:** [February 22, 2018, 4:27pm UTC](https://community.drivendata.org/t/which-algorithm/2037 "2018-02-22T16:27:41Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@wbickelmann](https://community.drivendata.org/u/wbickelmann)
#### Post date: [February 22, 2018, 4:27pm UTC](https://community.drivendata.org/t/which-algorithm/2037/1 "2018-02-22T16:27:41Z")
Which algorithm gave all of you the highest accuracy?
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### Author:  [@payback](https://community.drivendata.org/u/payback)
#### Post date: [February 22, 2018, 5:08pm UTC](https://community.drivendata.org/t/which-algorithm/2037/2 "2018-02-22T17:08:19Z")
accuracy is not a good metric for this competition and also…
> **[No free lunch theorem](https://en.wikipedia.org/wiki/No_free_lunch_theorem)**
>
> In mathematical folklore, the "no free lunch" theorem (sometimes pluralized) of David Wolpert and William Macready appears in the 1997 "No Free Lunch Theorems for Optimization". Wolpert had previously derived no free lunch theorems for machine learning (statistical inference). In 2005, Wolpert and Macready themselves indicated that the first theorem in their paper "state\[s\] that any two optimization algorithms are equivalent when their performance is averaged across all possible problems". The 19...