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Basic Machine Learning with KNN and Racket

K Nearest Neighbor (KNN) is a lazy, supervised machine learning algorithm. In this post we step through a KNN implementation in Racket, a dialect of Scheme.

Software Science

Improve Your Software Architecture with Ports and Adapters

Ports and adapters prevent business logic from becoming coupled to other dependencies. They create little classes with well-defined pieces of functionality.

Software Science

FFI: Foreign Function Interfaces for Fun & Industry

An FFI wrapper is much easier to write and maintain than a C extension, more portable across platforms and languages, and easier for users to install.

Software Science

The First Time Programming Scared Me

Back in March of 2012, I wrote some code that disturbed me immensely. The experience was profound and a bit frightening.

Software Science

Message-Oriented Programming

Designing around the messages, rather than the objects, brought my whole system into focus. If modules communicate by passing around self-contained textual data, or a simple struct

Software Science

Solving Sudoku in C with Recursive Backtracking

Recursive backtracking algorithms are incredibly powerful, solving complex problems with little bookkeeping. Here's an example of one in action.

Software Science

Binary Serialization Tour Guide

A list of most of the choices for serializing and communicating binary data structures.

Software Science

The UDP Firewall Punching Technique Explored

A proof-of-concept Java client and server to illustrate the UDP firewall punching technique used by Skype and similar programs.

Software Science

"All input is evil until proven otherwise. That’s rule number one."

The simplicity of this approach means that the instruction set doesn’t have to change and the code stays binary-compatible.

Software Science

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