I wouldn't call it quick... spiral in 150 iterations, with sigmoid magic: http://playground.tensorflow.org/#activation=sigmoid&regularization=L2&batchSize=10&da

I wouldn't call it quick... spiral in 150 iterations, with sigmoid magic: http://playground.tensorflow.org/#activation=sigmoid&regularization=L2&batchSize=10&dataset=spiral&regDataset=reg-plane&learningRate=0.1&regularizationRate=0.01&noise=0&networkShape=8&seed=0.63555&showTestData=false&discretize=false&percTrainData=50&x=true&y=true&xTimesY=true&xSquared=true&ySquared=true&cosX=false&sinX=true&cosY=false&sinY=true&collectStats=false&problem=classification http://playground.tensorflow.org/#activation=sigmoid&regular... I find the pulsating unsightly.