**Daily update | 12 May, 2022**

# StackExchange

#### If $L$ is regular then so is $\{y \mid \exists x \, xyx \in L\}$

**Source:** cs**Views:** 41**Score:** 3**Tags:** regular-languages automata finite-automata

#### What kind of training in statistics should an undergraduate in ecology be subjected to?

**Source:** stats**Views:** 21**Score:** 3**Tags:** ecology teaching

#### Why do discrete choice models (such as MNL) not require test set?

**Source:** stats**Views:** 24**Score:** 3**Tags:** machine-learning logistic mathematical-statistics statistical-significance

#### How to convert percentage values from 7 point scale to 5 point scale?

**Source:** stats**Views:** 44**Score:** 2**Tags:** survey scales

#### Does scoring rules really only apply to categorical outcomes?

**Source:** stats**Views:** 120**Score:** 2**Tags:** loss-functions decision-theory scoring-rules