**Daily update | 12 December, 2021**

# Medium

#### The Algorithm That (Recently) Changed the World

**Author:** Ella Alderson**Claps:** 275**Source:** machine-learning**Description:** “This will change medicine. It will change research. It will change bioengineering. It will change everything.”

#### 2021 Year in Review: The Future of AI & Blockchain Technology

**Author:** MXC Official**Claps:** 95**Source:** artificial-intelligence**Description:** 2021 has been a banner year for MatchX and the MXC Foundation. Both companies have made huge strides to build a crowd-sourced IoT network…

#### Will Switching To Solar And Wind Power Really Solve Our Problem?

**Author:** Will Lockett**Claps:** 95**Source:** artificial-intelligence**Description:** Upcoming technology could make our current eco-efforts counterproductive.

#### Amazon Engineer to ML Scientist: notes on a 2-year journey of growth

**Author:** Abhishek (Adam) Divekar**Claps:** 63**Source:** machine-learning**Description:** As of this week, I’m officially a Machine Learning Scientist (technically, an Applied Scientist, which is equivalent here at Amazon). This…

#### Implementing PCA from Scratch

**Author:** Eugenia Anello**Claps:** 15**Source:** data-science**Description:** Compare the implementation with Scikit-Learn’s PCA

# StackExchange

#### What is the covariance matrix of the normal order statistics?

**Source:** stats**Views:** 60**Score:** 3**Tags:** hypothesis-testing normal-distribution order-statistics mahalanobis

#### Distribution of $x_4(x_1-x_3)+x_5(x_2-x_1)$ with iid $x_i \sim N(0,1)$

**Source:** stats**Views:** 122**Score:** 2**Tags:** distributions normal-distribution random-variable

#### Computing a series of matrix power - matrix products

**Source:** cs**Views:** 11**Score:** 2**Tags:** algorithms numerical-algorithms matrix-multiplication

#### How can accuracy be greater than my precision, recall and F-Score metrics?

**Source:** stats**Views:** 28**Score:** 2**Tags:** machine-learning mathematical-statistics model-evaluation precision-recall confusion-matrix

#### How to predict data from sequence of sequences of variable size?

**Source:** datascience**Views:** 15**Score:** 1**Tags:** neural-network dataset rnn preprocessing sequence