Kdb+ Mastermind Challenge
4 Oct 2017
The Kx Community NYC Meetup recently competed in a Mastermind coding competition moderated by expert kdb+ programmer Nick Psaris, author of the book "Q Tips: Fast, Scalable and Maintainable Kdb+." The top four solutions were notable for the completely different approaches they took. Mastermind is a popular code-breaking game introduced in 1975 that pits a “codemaker” against a “codebreaker.” The “code,” represented by four pegs chosen from a universe of 6 colors, is picked by the “codemaker.” The “codebreaker” continually makes 4-peg guesses and is told by the “codemaker” how many are the correct color in the correct position, and how many are the correct color in the wrong position.
Using q in Machine Learning with Neural Network and Clustering Examples
4 Apr 2017
Tokyo-based kdb+ programmer, and algorithmic quantitative analyst, Mark Lefevre recently gave a couple of talks about using high-performance machine learning with kdb+ at the Kx Community Tokyo Meetup. His talk “Using Q to Read Japanese” focused on utilizing neural networks and how supervised learning can be used in q to teach a machine to recognize Japanese characters from handwritten images. His second talk, “Kx for Wine Tasting” focused on utilizing the k-means clustering algorithm and unsupervised learning in q to teach a machine to appreciate wine!
Another test framework for q/kdb+
15 Aug 2016
Patryk Bukowinski has an interesting Github repo, "yet Another Test Framework for q/kdb+," or yATF.q.
Raw Unapologetic Firepower with Kx
10 Aug 2016
Joe Landman of Scalable Informatics, a hardware vendor that sells Big Data analytics appliances, was inspired by our blog post last week to write about Kx based on his first-hand experience. Worth reading.
On implementing a linear programming algorithm in q
3 May 2016
KxCon2016 is around the corner and mathematician Joel Lemay and engineer Max Tsuno have come up with a presentation for the conference about their methodology for applying linear programming algorithms in q to the utility industry.
New edition of Q for Mortals
7 Dec 2015
Jeffry Borror has published q for Mortals Version 3, An Introduction to Q Programming. You can read the first chapter, "Shock and Awe," at the Kx wiki, code.kx.com.