**Daily update | 23 November, 2021**

# Medium

#### How to process a DataFrame with millions of rows in seconds?

**Author:** Roman Orac**Claps:** 168**Source:** data-science**Description:** TLDR; process it with a new Python Data Processing Engine in the Cloud.

#### 7-day Challenge — Mastering Ggplot2: Day 1 — Bar Chart

**Author:** Chi Nguyen**Claps:** 162**Source:** data-science**Description:** A guide to getting to know ggplot2 visualization in R from zero.

#### Machine Learning Predicts Who is Most Likely to Cheat

**Author:** Carlyn Beccia**Claps:** 120**Source:** artificial-intelligence**Description:** Pay attention, men. Sexual dissatisfaction was a more significant predictor of infidelity in women than men.

#### Python’s Dependency Conflicts are Depriving Data Scientists of Sleep

**Author:** Manuel Treffer**Claps:** 75**Source:** data-science**Description:** A guide about mastering dependencies in your personal Data Science project and finding a possible way to deal with emerging conflicts.

#### Advanced Group Time Series Validation

**Author:** Dmitry Labazkin**Claps:** 54**Source:** machine-learning**Description:** And how CNN formula can help to implement it

# StackExchange

#### Data structure that supports insertion and fast random element lookup

**Source:** cs**Views:** 2634**Score:** 12**Tags:** complexity-theory data-structures

#### Data structure for fast insertion and fast random element removal

**Source:** cs**Views:** 2754**Score:** 12**Tags:** complexity-theory data-structures

#### Could any equation have predicted the results of this simulation?

**Source:** stats**Views:** 3194**Score:** 10**Tags:** r probability distributions simulation histogram

#### discrete optimization problem with a matrix inverse

**Source:** cs**Views:** 88**Score:** 5**Tags:** optimization discrete-mathematics greedy-algorithms

#### Should I make equally sized samples for the Mann-Whitney U test if originally I have unequal sample sizes

**Source:** stats**Views:** 247**Score:** 4**Tags:** mathematical-statistics statistical-power wilcoxon-mann-whitney-test