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I haven't read the research papers yet, but as someone new to machine learning and image recognition... > Hinton’s capsule networks matched the accuracy of the
by epmaybe 9y ago
I haven't read the research papers yet, but as someone new to machine learning and image recognition...
> Hinton’s capsule networks matched the accuracy of the best previous techniques on a standard test of how well software can learn to recognize handwritten digits
Is the journalist just saying that capsule networks can perform well on MNIST? Don't most state of the art techniques perform with 99+ accuracy on MNIST?
- yorwba 9y agoYes, their first paper is on MNIST. That they get high accuracy isn't earth-shattering, but since they are doing something very different from other approaches, it's still noteworthy. The real benefit is in the generalization performance: We then tested this network on the affNIST 4 data set, in which each example is an MNIST digit with a random small affine transformation. Our models were never trained with affine transformations other than translation and any natural transformation seen in the standard MNIST. An under-trained CapsNet with early stopping which achieved 99.23% accuracy on the expanded MNIST test set achieved 79% accuracy on the affnist test set. A traditional convolutional model with a similar number of parameters which achieved similar accuracy (99.22%) on the expanded mnist test set but only achieved 66% on the affnist test set.
- amelius 9y agoYes that seems like a good first test for generalization. Did they publish these images somewhere?
- c3534l 9y agoIn Machine Learning terms, current neural network techniques are a local minima. Capsule networks might not perform as well now, but may offer a way forward which will outperform them in the long term as they're developed and refined. Being able to match MNIST results, rather than do worse, is a good reason to work on them.