# Writing Tips

A set of (opinionated) tips to get started with writing high-quality scientific reports.

### General advice

- Get bib entries from dblp (condensed form).
- Avoid orphans.
- Ensure symbols are in the same line as their descriptor using
`~`

`[...] given an action~$a$ [...]`

- Use vectorized figures.
- Be consistent.
- either British or American English
- uniform capitalization of each heading level

- Use
`\colon`

instead of`:`

in function definitions, e.g.`$T \colon S \times A \rightarrow \Delta(S)$`

- Punctuate equations since they are part of the text:
`Mathematical expressions can be ``inline'' like this: $x^2+y^2=z^2$, or ``displayed'' like this: % \begin{equation*} x^2+y^2=z^2. \end{equation*} %`

- Use the right quotation marks.
`Here we see some `text in quotes'.`

- If you see an error, fix it. It is good practice to keep a file without errors or warnings, this way when you add an error it is easy to find the problem.

### Useful packages

#### Citations

The natbib package allow us to work with both authorâ€“year and numerical citations.

```
% preamble: \uspackage{natbib}
A Markov decision process \citep[MDP;][]{Puterman1994} is a tuple [...]
[...] we refer to~\citet{DBLP:journals/ai/KaelblingLC98} for more details.
```

A Markov decision processes (MDP; Puterman 1994) is a tuple [â€¦]

[â€¦] we refer to Kaelbling, Littman, and Cassandra (1998) for more details.

#### Automatic references

Use `cleveref`

to keep references consistent.

```
% preamble: \usepackage{cleveref}
From \cref{eq:max}, we notice [...]
```

From Eq. (1), we notice [â€¦]

#### Clean tables

Get some inspiration from clear off the table.

```
% Preamble: \usepackage{booktabs} \usepackage{multirow} \usepackage{xcolor}
\newcommand{\gc}[1]{\color{green!60!black}\textbf{#1}}
\begin{tabular}{@{}rrrrr@{}}
\toprule
\multirow{2}{*}{Algorithm} & \multicolumn{2}{c}{Reward} & \multicolumn{2}{c}{Cost} \\ \cmidrule(lr){2-3} \cmidrule(l){4-5}
& Problem A & Problem B & Problem A & Problem B \\ \cmidrule(lr){2-3} \cmidrule(l){4-5}
Method A & \gc{0.87} & 0.80 & \gc{0.729} & 0.75 \\
Method B & 0.80 & \gc{0.90} & \gc{0.847} & 0.85 \\
\bottomrule
\end{tabular}
```

For python/pandas users, consider using pandas.DataFrame.to_latex to export your dataframe to a latex table.

### Math

#### Inline math

For inline math, that is, math inside a sentence, use `$\sum_{x \in X} x$`

.

For better spacing, try to keep inline math at the same lineheight. Commands like `\frac{1}{2}`

will be larger than the line and add white space above and below. Instead, use `$\nicefrac{1}{2}$`

.

#### Display math

Display math can be done in several ways. For single equations, use

```
\[
\sum_{x \in X} x
\]
% or
\begin{equation}
\sum_{x \in X} x
\end{equation}
```

Make sure equations you want to refer to later are numbered.

Multiple lines of math, for example to write equation systems or if your equation doesnâ€™t fit a single line, can be done via the align environment:

```
\begin{align}
\sum_{x \in X} & = f(x) \\
& + g(x).
\end{align}
```

### Externalize Tikz pictures

You can easily export Tikz pictures into PDF figures, by adding the following to your preamble:

```
\usetikzlibrary{external}
\tikzexternalize % activate!
```

Moreover, before each Tikz picture, set the desired filename for the export with:

```
\tikzsetnextfilename{test_figure}
```

If youâ€™re on Overleaf, then compile and click the logs. Scroll downwards and click â€śother logs and files.â€ť In this dropdown list, you will find all of the exported figures. For more options for the externalize package, see: https://tikz.dev/library-external.