```MySQL主从复制是数据库复制的一种形式, 其中数据从一个MySQL数据库(主服务器)自动复制到一个或多个MySQL数据库(从服务器). 主从复制的工作流程主服务器上的...
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IP属地：上海
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sql: DB master slave
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python: shutil
```import shutil shutil.copytree(r'../input/trydata/image_test', r'./trydata')shutil.co...
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python: env print
```import sys print(sys.path)print(sys.executable)print(sys.version)import pandas as pd...
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python: Jupyter,Kaggle !%
```! Jupyter Notebook/Kaggle Notebook: os command% Jupyter Notebook/Kaggle Notebook: Ma...
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java: DB master slave
```<dependencies> <dependency> <groupId>org.springframework.boot</groupId> spri...
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paper: kaggle register
```edge1.microsoft Edge plugin2.Header Editor(firefox)3.add, setup, and enable4.export ...
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design philosophy
no see no contribution tracekeep last trace cyclecan return, return easy forms regularf...
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心理学定律
奥卡姆剃刀曝光效应启动效应常态理论因果关系错觉确认偏误光环效应框架效应墨菲定理酒与污水定律彼得原理沉默螺旋水桶定律马太效应零和博弈华盛顿合作规律手表定律不值得定律蘑菇定律
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ai: loss-tverskyloss
```class TverskyLoss(nn.Module): def __init__(self, apply_nonlin=None, batch_dice=Fal...
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ai: loss-focalloss
```class FocalLoss(nn.Module): def __init__(self, apply_nonlin=None, alpha=None, gamm...
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ai: losss-bce
```import torchimport torch.nn as nn predictions = torch.tensor([0.1, 0.9, 0.8, 0.3], d...
