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2 changes: 1 addition & 1 deletion _book/neural_networks.md
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Expand Up @@ -13,7 +13,7 @@ header_text: "“It were much to be desired, that when mathematical processes pa
     [日本語](/ml4a/jp/neural_networks/)


Nearly a century before neural networks were first conceived, [Ada Lovelace](http://findingada.com/) described an ambition to build a "[calculus of the nervous system](http://www.thelancet.com/journals/lancet/article/PIIS0140-6736(15)00686-8/fulltext?rss=yes)." Although speculative analogies between brains and machines are as old as the philosophy of computation itself, it wasn't until Ada's teacher [Charles Babbage](https://en.wikipedia.org/wiki/Charles_Babbage) proposed the [Analytical engine](https://en.wikipedia.org/wiki/Analytical_Engine) that we conceived of "calculators" having humanlike cognitive capacities. Ada would not live to see her dream of building the engine come to fruitio n, as engineers of the time were unable to produce the complex circuitry her schematics required. Nevertheless, the idea was passed on to the next century when [Alan Turing](https://en.wikipedia.org/wiki/Alan_Turing) cited it as the inspiration for the [Imitation Game](http://phil415.pbworks.com/f/TuringComputing.pdf), what soon came to be called the "[Turing Test](https://en.wikipedia.org/wiki/Turing_test)." His ruminations into the extreme limits of computation incited the first boom of artificial intelligence, setting the stage for the first golden age of neural networks.
Nearly a century before neural networks were first conceived, [Ada Lovelace](http://findingada.com/) described an ambition to build a "[calculus of the nervous system](http://www.thelancet.com/journals/lancet/article/PIIS0140-6736(15)00686-8/fulltext?rss=yes)." Although speculative analogies between brains and machines are as old as the philosophy of computation itself, it wasn't until Ada's teacher [Charles Babbage](https://en.wikipedia.org/wiki/Charles_Babbage) proposed the [Analytical engine](https://en.wikipedia.org/wiki/Analytical_Engine) that we conceived of "calculators" having humanlike cognitive capacities. Ada would not live to see her dream of building the engine come to fruition, as engineers of the time were unable to produce the complex circuitry her schematics required. Nevertheless, the idea was passed on to the next century when [Alan Turing](https://en.wikipedia.org/wiki/Alan_Turing) cited it as the inspiration for the [Imitation Game](http://phil415.pbworks.com/f/TuringComputing.pdf), what soon came to be called the "[Turing Test](https://en.wikipedia.org/wiki/Turing_test)." His ruminations into the extreme limits of computation incited the first boom of artificial intelligence, setting the stage for the first golden age of neural networks.

## Birth and rebirth of neural nets

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