**Daily update | 16 March, 2022**

# StackExchange

#### Which Turing Award winners have supervised the PhDs of other Turing Award winners?

**Source:** cs**Views:** 1040**Score:** 6**Tags:** history

#### Understanding a proof from a paper

**Source:** cs**Views:** 35**Score:** 3**Tags:** model-checking linear-temporal-logic game-semantics

#### having trouble understanding the proof of regular expression identities $(u + v)^* = (u^*v)^*u^*$

**Source:** cs**Views:** 44**Score:** 2**Tags:** regular-languages regular-expressions proof-techniques

#### How to choose $\gamma$ parameter in Focal Loss?

**Source:** stats**Views:** 32**Score:** 2**Tags:** machine-learning loss-functions hyperparameter

#### Meaning of & intuition behind predictors being fixed in linear regression

**Source:** stats**Views:** 26**Score:** 2**Tags:** regression linear-model fixed-effects-model