tungwaiyip.info

home

about me

links

Blog

< December 2012 >
SuMoTuWeThFrSa
       1
2 3 4 5 6 7 8
9101112131415
16171819202122
23242526272829
3031     

past articles »

Click for San Francisco, California Forecast

San Francisco, USA

 

Collaborative Filtering in 9 Lines of Code

I have purchased Toby Segaran's book Programming Collective Intelligence when it first come out in 2007. Yet I still have not been able to finished it after all these years. Now I am giving myself another push. While I was revisiting the book I tried to implement its technique using Pandas. I am quite happy to be able to do it in just 9 lines of code. So I have put together a little article to show collaborative filtering using Pandas. This is also a great exercise for me using to make a very nice document using iPython notebook for the first time.

The main reason for not having completed the book is not because it is not interesting or not useful. It is very much an excellent book to introduce readers to the topic of collective intelligence. The problem is I strive to work through all the coding examples and not just to read the text. Many times I have feel the examples given, designed for average programmer without additional experience, often has low abstraction level. I tried to improve them, including building some tools on myself. This unfortunately doomed me because I never have the time to build the tools or even just to work through the exercises in sufficient detail. This time around I feel that I have gained a lot of experience and have access to many tools like Pandas. I hope this will be an enjoyable exercise.

2012.12.17 [] - comments

 

 

blog comments powered by Disqus

past articles »

 

BBC News

 

US election: McConnell promises an 'orderly' transition of power (24 Sep 2020)

 

California wildfire trend 'driven by climate' (24 Sep 2020)

 

Cardinal Becciu: Vatican official resigns unexpectedly (24 Sep 2020)

 

Coronavirus: Are the lockdown restrictions too strict? (24 Sep 2020)

 

Breonna Taylor: Family lawyer slams 'devilish' grand jury outcome (24 Sep 2020)

 

Magawa the mine-detecting rat wins PDSA Gold Medal (24 Sep 2020)

 

UK chancellor defends emergency jobs scheme (24 Sep 2020)

 

Chen Qiushi: Chinese journalist missing since February 'under state supervision' (24 Sep 2020)

 

Germany far right: Intelligence chief forced out amid criticism (24 Sep 2020)

 

Pregnant woman rescues husband from shark attack in Florida (24 Sep 2020)

more »

 

SF Gate

 

Ship traffic, September 25 (24 Sep 2020)

 

Ship traffic, September 24 (23 Sep 2020)

 

Ship traffic, September 23 (22 Sep 2020)

 

Ship traffic, September 22 (21 Sep 2020)

 

Ship traffic, September 21 (20 Sep 2020)

 

Ship traffic, September 19 (18 Sep 2020)

more »


Site feed Updated: 2020-Sep-24 18:00