introduced by Marco Dorigo in 1992 in his PhD thesis, is a probabilistic technique for solving computational problems which can be reduced to finding good paths through graphs. They are inspired by the behavior of ants in finding paths from the colony to food.
a digital signal processing (DSP) technique for identifying frequency components of a signal, published by Dr. Gerald Goertzel in 1958. While the general Fast Fourier transform (FFT) algorithm computes evenly across the bandwidth of the incoming signal, the Goertzel algorithm looks at specific, predetermined frequency.
Whilst the puzzles here are mainly lateral thinking puzzles, they range from the image type puzzle shown here, through to riddles and other puzzles. Overall, they provide somewhere to exercise the brain muscle and have fun.
Now 'Common Practice' got divided in patterns and idioms, jeez... One thing is to intelligently describe something another is to over-complicate and over engineer stuff out without creating added value.