Being able to transport encrypted data is important in some of my projects at work. One-way hashes using MD5 usually suffice for most encryption purposes but Symmetric Encryption algorithms are important for encrypting and then decrypting data. For this, we use the Rijndael and AES algorithm in a few different languages.
A short script to remove that pesky BuddyPress Admin Bar in Wordpress 3.4.2 and BuddyPress 1.6.1
Cosine similarity measures the angle between two vectors and can be used to perform similarity between text strings. In the following code, the two input strings are vectorized and the similarity is returned as a floating point value between 0 and 1.
Multidimensional Scaling (MDS) is a linear embedding method used when we only know the pairwise distances between data points. For linear systems, MDS works well with as little as 10 points and the system is 2 dimensional.
Particle swarm optimization can be used in a variety of different applications. A few examples involving nonconvex, multi-objective, discontinuous search spaces and applications in neural networks and support vector machines are mentioned.
I explain and show code to construct the Particle Swarm Optimization in Python. I conclude by optimizing on the Rastrigin function, a function that researchers use to test optimization algorithms on.
Particle swarm optimization is often used to optimize functions in rather unfriendly non-convex, non-continuous spaces. The idea behind the algorithm involves a swarm of particles flying through a space both collaboratively and independently.
Step-by-step instructions for rewiring where your RSS link icon points to within the Platform theme (by PageLines) for Wordpress (Updated 2012-06-21)
Python code is shown that estimates the Lyapunov spectra for the Rossler and Lorenz systems. This code is written in a way that makes it adaptable for other continuous-time systems.
Support Vector Regression is a technique in machine learning that can be used to model chaotic data. A program is shown to work on Delayed Henon Map data.
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