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%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
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% Document Info
\author{ysesst93013}
\pdfinfo{
  /Title (trick-of-classification-model.pdf)
  /Creator (Cheatography)
  /Author (ysesst93013)
  /Subject (Trick of Classification Model Cheat Sheet)
}

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% Header and Footer
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\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
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    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
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\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{Trick of Classification Model Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{ysesst93013} via \textcolor{DarkBackground}{\uline{cheatography.com/213613/cs/46513/}}}
\end{tabulary}
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\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}ysesst93013 \\
  \uline{cheatography.com/ysesst93013} \\
  \end{tabulary}
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\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Not Yet Published.\\
   Updated 28th May, 2025.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
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  Measure your website readability!\\
  www.readability-score.com
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\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{3}

\begin{tabularx}{5.377cm}{x{1.94103 cm} x{3.03597 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Data Augmentation}}  \tn
% Row 0
\SetRowColor{LightBackground}
Random Horizontal Flipping & \seqsplit{在每一個batch中，對輸入圖像以50\%的機率執行水平翻轉，使用RandomHorizontalFlip(p=0}.5)進行設定 \tn 
% Row Count 5 (+ 5)
% Row 1
\SetRowColor{white}
Random Crop with Padding & \seqsplit{在圖像周圍添加隨機填充，然後進行隨機裁剪，在每個輸入圖像的四周加上一定的像素填充，例如4像素。隨機裁剪回原始圖像大小。可以通過} \seqsplit{torchvision.transforms.RandomCrop()} 配合 padding \seqsplit{參數來完成，目前我們內部無使用此方式，改為使用數據增強方法3。} \tn 
% Row Count 19 (+ 14)
% Row 2
\SetRowColor{LightBackground}
Pad Image to Square & \seqsplit{承上，此方式為目前取代Random} Crop with \seqsplit{Padding，將輸入的圖片填充（padding）為正方形，並在填充區域使用常數值（默認為0）作為填充內容。最終返回處理後的正方形圖片。} \tn 
% Row Count 29 (+ 10)
% Row 3
\SetRowColor{white}
MixUp & 通過將兩個樣本及其標籤進行線性插值來生成新的訓練樣本。可以視為在數據樣本空間中創造新的混合"樣本，從而幫助模型學習更廣泛的特徵。混和係數α的合理設置範圍是{[}0.1, 0.4{]}，取決於數據集的具體特性，另外在Loss計算上要將x和y特別使用x ̃= \seqsplit{λx\_i+(1-λx\_i)進行計算。} \tn 
% Row Count 44 (+ 15)
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\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{5.377cm}{x{1.94103 cm} x{3.03597 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Data Augmentation (cont)}}  \tn
% Row 4
\SetRowColor{LightBackground}
Fancy PCA & \seqsplit{來自AlexNet論文內有幾句話提到此方法，通過對訓練影像的} RGB \seqsplit{進行主成分分析，提取影像的主要光照方向，並使用正態分布} ( N(0, 0.1) ) \seqsplit{生成隨機噪聲，將其映射到影像的} RGB \seqsplit{通道，模擬光照條件的微小變化。這種方法能有效增強影像的多樣性，幫助模型提升對不同光照場景的適應能力。} \tn 
% Row Count 16 (+ 16)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.34379 cm} x{3.63321 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Regularization}}  \tn
% Row 0
\SetRowColor{LightBackground}
Label Smoothing & \seqsplit{用於減少模型過度自信的預測。將原始的} one-hot \seqsplit{標籤轉換為平滑後的標籤。可以提升模型的泛化性能，先定義一個小的平滑參數} ε，例如 \seqsplit{0.1，具體做法是將原始標籤中的} 1 減小為 1 - ε，並將 0 增加到 ε / (n - 1)，其中 n 是分類數量。 \tn 
% Row Count 11 (+ 11)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
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\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}