is4junk comments on Open thread, Mar. 23 - Mar. 31, 2015 - Less Wrong
You are viewing a comment permalink. View the original post to see all comments and the full post content.
You are viewing a comment permalink. View the original post to see all comments and the full post content.
Comments (181)
Yes, I'm familiar with the history. But how far would we be without the neural network work done since ~2001? The non-neural-network competitors on Imagenet like SVM are nowhere near human levels of performance, Watson required neural networks, Stanley won the DARPA Grand Challenge without neural networks because it had so many sensors but real self-driving cars will have to use neural networks, neural networks are why Google Translate has gone from roughly Babelfish levels (hysterically bad) to remarkably good, voice recognition has gone from mostly hypothetical to routine on smartphones...
What major AI achievements have SVMs or random forests racked up over the past decade comparable to any of that?
NNs connection to biology is very thin. Artificial neurons don't look or act like regular neurons at all. But as a coined term to sell your research idea its great.
NNs are popular now for their deep learning properties and ability to learn features from unlabeled data (like edge detection).
Comparing NNs to SVMs isn't really fair. You use the tool best for the job. If you have lots of labeled data you are more likely to use an SVM. It just depends on what problem you are being asked so solve. And of course you might feed an NNs output into an SVM or vice versa.
As for major achievements - NNs are leading for now because 1) most of the world's data is unlabeled and 2) automated feature discovery (deep learning) is better then paying people to craft features.
I am well aware of that. Nevertheless, as a historical fact, they were inspired by real neurons, they do operate more like real neurons than do, say, SVMs or random forests, and this is the background to my original question.
ImageNet is a lot of labeled data, to give one example.
There is a difference between explaining, and explaining away. You seem to think you are doing the latter, while you're really just doing the former.
SVMs are O(n^3) - if you have lots of data you shouldn't use SVMs.