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๐—›๐—ผ๐˜„ ๐—–๐—ผ๐—ป๐˜ƒ๐—ผ๐—น๐˜‚๐˜๐—ถ๐—ผ๐—ป๐—ฎ๐—น ๐—ก๐—ฒ๐˜‚๐—ฟ๐—ฎ๐—น ๐—ก๐—ฒ๐˜๐˜„๐—ผ๐—ฟ๐—ธ๐˜€ ๐—ช๐—ผ๐—ฟ๐—ธ A Convolutional Neural Network (CNN) works by using layers to process images: โ€ข Convolutional layers scan the input image using filters to detect features like edges, textures, and patterns.๐Ÿ‘‡

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6 ๆก่ฏ„่ฎบ

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โ€ข Next, Pooling layers reduce the spatial dimensions while preserving important information. โ€ข Then, fully connected layers take these extracted features and make final classifications by weighting connections between all neurons.

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็ˆ†ๆญปใฎ็ฅž ็š„ๅคดๅƒ
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What is this

Kit ็š„ๅคดๅƒ
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This thing is smarter than me

ramakrushna โ€” e/acc ็š„ๅคดๅƒ
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๐Ÿ˜ฌ๐Ÿ˜‡

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For what is it for? For wich porpouse?

็›ธๅ…ณ่ง†้ข‘

Fukushima's video (1986) shows a CNN that recognises handwritten digits [3], three years before LeCun's video (1989). CNN timeline taken from [5]: โ˜… 1969: Kunihiko Fukushima published rectified linear units or ReLUs [1] which are now extensively used in CNNs. โ˜… 1979: Fukushima published the basic CNN architecture with convolution layers and downsampling layers [2]. He called it neocognitron. It was trained by unsupervised learning rules. Compute was 100 times more expensive than in 1989, and a billion times more expensive than today. โ˜… 1986: Fukushima's video on recognising hand-written digits [3]. โ˜… 1988: Wei Zhang et al had the first "modern" 2-dimensional CNN trained by backpropagation, and also applied it to character recognition [4]. Compute was about 10 million times more expensive than today. โ˜… 1989-: later work by others [5]. REFERENCES (more in [5]) [1] K. Fukushima (1969). Visual feature extraction by a multilayered network of analog threshold elements. IEEE Transactions on Systems Science and Cybernetics. 5 (4): 322-333. This work introduced rectified linear units or ReLUs, now widely used in CNNs and other neural nets. [2] K. Fukushima (1979). Neural network model for a mechanism of pattern recognition unaffected by shift in positionโ€”Neocognitron. Trans. IECE, vol. J62-A, no. 10, pp. 658-665, 1979. The first deep convolutional neural network architecture, with alternating convolutional layers and downsampling layers. In Japanese. English version: 1980. [3] Movie produced by K. Fukushima, S. Miyake and T. Ito (NHK Science and Technical Research Laboratories), in 1986. YouTube: [4] W. Zhang, J. Tanida, K. Itoh, Y. Ichioka. Shift-invariant pattern recognition neural network and its optical architecture. Proc. Annual Conference of the Japan Society of Applied Physics, 1988. First "modern" backpropagation-trained 2-dimensional CNN, applied to character recognition. [5] J. Schmidhuber (AI Blog, 2025). Who invented convolutional neural networks?

Jรผrgen Schmidhuber

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