In this chapter, as preparation for deep learning, we dug into neural networks, which are one of the algorithms of machine learning. You learned about three representative algorithms of single-layer neural networks: perceptrons, logistic regression, and multi-class logistic regression. We see that single-layer neural networks can't solve nonlinear problems, but this problem can be solved with multi-layer neural networks—the networks with a hidden layer(s) between the input layer and output layer. An intuitive understanding of why MLPs can solve nonlinear problems says that the networks can learn more complicated logical operations by adding layers and increasing the number of units, and thus having the ability to express more complicated functions. The key to letting the model have this ability is the backpropagation algorithm. By backpropagating the error of the output to the whole network, the model is updated and adjusted to fit in the training data with each iteration, and finally...
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Yusuke Sugomori is a creative technologist with a background in information engineering. When he was a graduate school student, he cofounded Gunosy with his colleagues, which uses machine learning and web-based data mining to determine individual users' respective interests and provides an optimized selection of daily news items based on those interests. This algorithm-based app has gained a lot of attention since its release and now has more than 10 million users. The company has been listed on the Tokyo Stock Exchange since April 28, 2015. In 2013, Sugomori joined Dentsu, the largest advertising company in Japan based on nonconsolidated gross profit in 2014, where he carried out a wide variety of digital advertising, smartphone app development, and big data analysis. He was also featured as one of eight "new generation" creators by the Japanese magazine Web Designing. In April 2016, he joined a medical start-up as cofounder and CTO.
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Yusuke Sugomori is a creative technologist with a background in information engineering. When he was a graduate school student, he cofounded Gunosy with his colleagues, which uses machine learning and web-based data mining to determine individual users' respective interests and provides an optimized selection of daily news items based on those interests. This algorithm-based app has gained a lot of attention since its release and now has more than 10 million users. The company has been listed on the Tokyo Stock Exchange since April 28, 2015. In 2013, Sugomori joined Dentsu, the largest advertising company in Japan based on nonconsolidated gross profit in 2014, where he carried out a wide variety of digital advertising, smartphone app development, and big data analysis. He was also featured as one of eight "new generation" creators by the Japanese magazine Web Designing. In April 2016, he joined a medical start-up as cofounder and CTO.
Read more about Yusuke Sugomori