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½Å°æ¸Á(neural network)À̶õ?

½Å°æ¸ÁÀº Àΰ£ÀÇ ³ú ±¸Á¶¸¦ ÀÌ¿ëÇÏ¿© ¸ðµ¨¸µµÈ ¾Ë°í¸®ÁòÀ¸·Î ÆÐÅÏ ÀνÄ( ¼ýÀÚ ÀÎ½Ä ) µî ±× Ȱ¿ë ¹üÀ§°¡ ´ë´ÜÈ÷ ±¤¹üÀ§ÇÏ´Ù. ±×µµ ±×·² °ÍÀÌ Àΰ£ÀÇ ³ú ±¸Á¶¸¦ ¸ðµ¨¸µÇߴµ¥ Á¦´ë·Î¸¸ µÉ ¼ö ÀÖ´Ù¸é ¸øÇÒ °ÍÀÌ ÀÖÀ¸·ª? ±Ù·¡¿¡´Â ÀÚµ¿Â÷ ¿îÀü±îÁö ½Å°æ¸ÁÀ» ÀÌ¿ëÇØ °¡´ÉÇØÁ³À¸¸ç, Ȥ½Ã ÇнÀ ¾Ë°í¸®ÁòÀ̳ª ÀΰøÁö´É °ü·Ã ¾Ë°í¸®ÁòÀ» »ç¿ëÇÒ Çʿ䰡 ÀÖÀ» ¶§ ½Å°æ¸ÁÀ» ÀÌ¿ëÇØº¸ÀÚ! ¶ó°í ¿ÜÄ¥ ¼ö ÀÖÀ» ¸¸Å­ °ÅÀÇ ¸ðµç ºÐ¾ß¿¡ Àû¿ëÀÌ °¡´ÉÇÏ´Ù.

 ¹°ÁúÀÇ ¼ºÁúÀ» ÀÒÁö ¾Ê´Â ÃÖ¼Ò ´ÜÀ§°¡ ºÐÀÚÀÎ °Íó·³, Àΰ£ÀÇ ³ú¸¦ Æ÷ÇÔÇÑ ½Å°æµéÀ» ±¸¼ºÇÏ´Â ÃÖ¼Ò ´ÜÀ§´Â ´º·Ð(neuron)ÀÌ´Ù. ´º·Ð°ú ´º·ÐÀÇ ¿¬°áÀº ½Ã³À½º(synapse)¶ó´Â ¹°ÁúÀÌ °ü¿©¸¦ ÇÑ´Ù. ¸¸¾à ´ÙÃÆ´Ù...¶ó¸é ±× ÅëÁõÀÌ ´º·ÐµéÀÇ ¿¬°á, ¿¬°áÀ» ÅëÇØ ³ú±îÁö Àü´ÞµÇ°í, ³ú¿¡¼­ ±× ÅëÁõÀ» ´À³¢´Â °ÍÀÌ´Ù. ¾Æ·¡ ±×¸²Àº ½Å°æ¸ÁÀÇ ÃÖ¼Ò ´ÜÀ§°¡ µÇ´Â PE(Processing Element)ÀÌ´Ù. ´º·ÐÀ» ¸ðµ¨¸µÇß´Ù°í ÇÒ ¼ö ÀÖ´Ù.


±×¸². PEÀÇ ±âº» ±¸Á¶¿Í ½Å°æ¸Á

ÀÔ·ÂÀÇ °¢ ¼ººÐ¿¡ °¡ÁßÄ¡(weight)¸¦ °öÇÑ °ªÀÌ net °ªÀÌ µÇ¸ç, Ãâ·ÂÀº net °ª°ú ÇÔ¼ö f¿¡ µû¶ó ´Þ¶óÁø´Ù. ½±°Ô ¼³¸íÇϸé, K¾ç°ú L¾çÀÌ µ¿½Ã¿¡ Áö³ª°¥ ¶§, K ¾çÀ¸·Î ¸Ó¸®°¡ µ¹¾Æ°£´Ù¸é ´ç½ÅÀÇ ³ú ±¸Á¶´Â K¾çÂÊ¿¡ °¡ÁßÄ¡°¡ ³ô´Ù(°ü½ÉÀÌ ¸¹´Ù)¶ó°í ¸»ÇÒ ¼ö ÀÖ´Â °ÍÀÌ´Ù.(^^;)

 

 


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