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用Excel手搓神经网络2:从Small到Large,增长的是参数,不变的是逻辑

  • 2026-04-06 12:01:44
用Excel手搓神经网络2:从Small到Large,增长的是参数,不变的是逻辑

小朋友们、大朋友们，春节假期余额已经正式清零啦！

是不是还沉浸在吃喝玩乐里没回过神？是不是悄悄长了肉肉，一想到上班 / 上学就开始有点小焦虑？

别慌，其实很多事情和咱们今天要聊的「Excel 手搓神经网络」一样 ——从 Small 到 Large，模型越做越大，增加的是参数，堆上去的是体量，但底层灵魂逻辑，从来没变过。

不知道去哪里找Excel表格的，看这里。👇👇👇

过年拆“AI黑箱”：用Excel手搓神经网络，初学者也能吃透深度学习底层逻辑

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  1. CONNECT:[ UseTime:0.000859s ] mysql:host=127.0.0.1;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000776s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000323s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000290s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000487s ]
  6. SELECT * FROM `set` [ RunTime:0.000212s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000557s ]
  8. SELECT * FROM `article` WHERE `id` = 476211 LIMIT 1 [ RunTime:0.000393s ]
  9. UPDATE `article` SET `lasttime` = 1775720745 WHERE `id` = 476211 [ RunTime:0.006259s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000240s ]
  11. SELECT * FROM `article` WHERE `id` < 476211 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000442s ]
  12. SELECT * FROM `article` WHERE `id` > 476211 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000351s ]
  13. SELECT * FROM `article` WHERE `id` < 476211 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.003189s ]
  14. SELECT * FROM `article` WHERE `id` < 476211 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000660s ]
  15. SELECT * FROM `article` WHERE `id` < 476211 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000784s ]
0.159747s