General Dev>In The News

Using NumPy to replace Pandas GroupBy-Apply pattern for performance

CommunityNews

CommunityNews

Using NumPy to replace Pandas GroupBy-Apply pattern for performance

Using NumPy to replace Pandas GroupBy-Apply pattern for performance.
If you use PySpark a lot you would know that the DataFrame API is great. However there are times when it is not sufficient because it does not cover every single piece of functionality we may want. This is where the Pandas UDF functionality comes in. The nice thing about the Pandas UDF functionality is that it uses Arrow for data transfer between Spark and Pandas which minimizes serialization-deserialization costs. I have a slight preference for Pandas Function API over Pandas UDF but now let’s get to the meat of the post which is about speeding up the Pandas GroupBy-Apply pattern by using NumPy instead.

Read in full here:

This thread was posted by one of our members via one of our news source trackers.

View thread on forum
#performance#pandas
0 480 0

Where Next?

View thread on forum
performance
pandas
Home General Dev>In The News
#performance#pandas
0 480 0
Last post

Popular General Dev topics Top

First poster: HenryCost
General Dev>In The News

I wired my tree with 500 LED lights and calculated their 3D coordinates
I wired my tree with 500 LED lights and calculated their 3D coordinates… If you support me on Patreon at any point in December 2020 I wi...
youtube.com
1 1302 2
New
First poster: bot
General Dev>In The News

Are top websites using WebGL for fingerprinting?
Site Fingerprinting google.com Yes youtube.com Yes Amazon.com Yes Yahoo.com Yes Zoom.us No Facebook.com Yes Reddit.com Ye...
jonatron.github.io
#webgl
0 1439 0
New
First poster: AstonJ
General Dev>In The News

Launching Fig
:tada: Launching Fig I am excited to announce that, as of today, Fig is generally available to the public for download. With our public ...
fig.io
29 1437 17
New
First poster: bot
General Dev>In The News

22 years of Emacs
How a piece of advice became a lifestyle TABLE OF CONTENTS WHERE TO BEGIN… FIRST CONTACT PICKING EMACS FOR LIFE CHEATING ON EMACS SERE...
arjenwiersma.nl
/emacs
0 1059 0
New
First poster: bot
General Dev>In The News

The overengineered Solution to my Pigeon Problem
The overengineered Solution to my Pigeon Problem. TL;DR: I built a wifi-equipped water gun to shoot the pigeons on my balcony, controlle...
maxnagy.com
0 4367 0
New
First poster: bot
General Dev>In The News

A more mature ChatGPT competitor? PaLM + RLHF - Pytorch (wip)
GitHub - lucidrains/PaLM-rlhf-pytorch: Implementation of RLHF (Reinforcement Learning with Human Feedback) on top of the PaLM architectur...
github.com
#chatgpt
0 1046 0
New
First poster: bot
General Dev>In The News

I made a home security system, powered by a Raspberry Pi 3
Raspberry Pi security alarm — the basics. In November last year — I started building a DIY security alarm system, using a Raspberry Pi a...
blog.cavelab.dev
/security
0 1924 0
New
First poster: bot
General Dev>In The News

A Framework for Prioritizing Tech Debt
A Framework for Prioritizing Tech Debt. Leverage is a powerful tool that applies to many things, including the code we write. However, t...
maxcountryman.com
0 675 0
New
First poster: bot
General Dev>In The News

Declarative GNOME configuration with NixOS
Declarative GNOME configuration with NixOS. I adore tinkering with my machine, trying new tools, extensions, themes, and ideas. When I w...
hoverbear.org
/nixos
0 1087 0
New
First poster: DevotionGeo
General Dev>In The News

To avoid being replaced by LLMs, do what they can't
To avoid being replaced by LLMs, do what they can’t. What LLM’s can’t do yet
seangoedecke.com
17 378 7
New

Other popular topics Top

AstonJ
General Dev>Dev Chat

What are you listening to?
A thread that every forum needs! Simply post a link to a track on YouTube (or SoundCloud or Vimeo amongst others!) on a separate line an...
#community#music
201 4638 102
New
wolf4earth
Science/Tech>Health & Diet

How do you keep fit and healthy?
@AstonJ prompted me to open this topic after I mentioned in the lockdown thread how I started to do a lot more for my fitness. https://f...
#fitness#heath
193 4510 82
New
PragmaticBookshelf
Game Dev>Learning Resources

Hands-on Rust: Effective Learning through 2D Game Development and Play
Rust is an exciting new programming language combining the power of C with memory safety, fearless concurrency, and productivity boosters...
pragprog.com
#pragprog/rust#published-book/book-hands-on-rust
116 8760 30
New
AstonJ
General Dev>Hardware

Planck vs Preonic vs Subatomic (Keyboards)
I ended up cancelling my Moonlander order as I think it’s just going to be a bit too bulky for me. I think the Planck and the Preonic (o...
/keyboards#mechanical-keyboards#ortholinear#planck#preonic
105 14440 47
New
AstonJ
General Dev>Hardware

GMK Serika Keycaps - Serika 2 available to order now!
I have seen the keycaps I want - they are due for a group-buy this week but won’t be delivered until October next year!!! :rofl: The Ser...
/keyboards#keycaps#mechanical-keyboards
9 4393 7
New
dimitarvp
macOS>Chat

My thoughts on macOS vs Linux
Small essay with thoughts on macOS vs. Linux: I know @Exadra37 is just waiting around the corner to scream at me “I TOLD YOU SO!!!” but I...
#macos#linux
166 7775 69
New
PragmaticBookshelf
Backend>Learning Resources

Programming Phoenix LiveView
Build highly interactive applications without ever leaving Elixir, the way the experts do. Let LiveView take care of performance, scalabi...
pragprog.com
#pragprog/elixir/phoenix#published-book/book-programming-phoenix-liveview
63 5206 19
New
DevotionGeo
General Dev>Dev Chat

The V Programming Language
The V Programming Language Simple language for building maintainable programs V is already mentioned couple of times in the forum, but I...
#programminguages/v
21 11128 7
New
AstonJ
General Dev>Hardware

CharaChorder - type at the speed of thought?
Saw this on TikTok of all places! :lol: Anyone heard of them before? Lite:
/keyboards#charachorder
13 3957 4
New
PragmaticBookshelf
Community>In The Spotlight

Spotlight: Peter Ullrich (Author) Interview and AMA!
Author Spotlight: Peter Ullrich @PJUllrich Data is at the core of every business, but it is useless if nobody can access and analyze ...
/elixir/phoenix/book-building-table-views-with-phoenix-liveview
72 3959 21
New
Back to top

Sponsor Spotlight

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

General Dev>In The News

General Dev In The News ❯

Latest on Devtalk

Devtalk ❯

We ❤️ helpful members!

We reward our most helpful members via our MOTM scheme - by giving away a whopping 25 books per year!

Member of the Month

Devtalk Sponsors

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

Erlang Solutions

We build trusted fault-tolerant systems that scale to billions of users.

Honeybadger

Real-time error tracking, performance insights, and observability for devs.

Manning Publications

Develop your skills with books, videos, and courses.

AppSignal

Catch errors, track performance, monitor hosts and more.

WyeWorks

Enabling companies to succeed by building software people love.

Pragmatic Studio

Courses that move you from confusion to "Aha, now I get it!"

View all our sponsors ❯

Categories:

Sub Categories:

Popular Portals

Devtalk Sponsors

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

Erlang Solutions

We build trusted fault-tolerant systems that scale to billions of users.

Honeybadger

Real-time error tracking, performance insights, and observability for devs.

Manning Publications

Develop your skills with books, videos, and courses.

AppSignal

Catch errors, track performance, monitor hosts and more.

WyeWorks

Enabling companies to succeed by building software people love.

Pragmatic Studio

Courses that move you from confusion to "Aha, now I get it!"

View all our sponsors ❯

We're in Beta

About us Mission Statement See our Roadmap