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Obsidian Literature Maintenance

Use this reference when working inside the user's Obsidian vault literature area:

C:\Users\qyh15\Documents\Obsidian Vault\01 文献阅读

Empty AI Note Cleanup

Target folder:

01 文献阅读\00 AI总结笔记

Definition of an empty note:

Markdown file under the target folder.
After removing YAML frontmatter, standalone --- separators, whitespace,  , <br>, empty <p></p>, and HTML comments, there is no body content.
A note with any real summary, heading, bullet, Zotero link, DOI text, or manual annotation is not empty.

PowerShell dry-run pattern:

$dir = '01 文献阅读\00 AI总结笔记'
$empty = @()
Get-ChildItem -LiteralPath $dir -File -Filter '*.md' | ForEach-Object {
  $text = [System.IO.File]::ReadAllText($_.FullName)
  $body = $text -replace '^\uFEFF',''
  $body = [regex]::Replace($body, '(?s)^\s*---\r?\n.*?\r?\n---\s*', '')
  $body = [regex]::Replace($body, '(?m)^\s*---\s*$', '')
  $body = [regex]::Replace($body, '&nbsp;|<br\s*/?>|<p>\s*</p>|<!--.*?-->', '', 'Singleline')
  if ([string]::IsNullOrWhiteSpace($body)) { $empty += $_ }
}
$empty | Select-Object Name,Length
'EMPTY_COUNT=' + $empty.Count

Delete only after inspecting the dry-run count and at least a few representative files:

$empty | ForEach-Object { Remove-Item -LiteralPath $_.FullName }

After deletion, rerun the dry-run scan and confirm EMPTY_COUNT=0.

Dataview Dashboard Folder

Default dashboard folder:

01 文献阅读\01 Dataview文献看板

Recommended files:

00 文献总览.md: journal distribution, recent updates, missing rating/status.
01 按期刊分类.md: journal count ranking, one-row-per-paper detail table, high-impact journals, missing journal.
02 驱动器相关.md: actuator/robotic/soft robotics keyword views.
03 综述与进展类.md: review/recent/advances/progress/emerging/fundamentals/current/strategies views.
04 按年份分类.md: year grouping and count summaries.
05 材料与关键词分类.md: MXene, MOF, hydrogel/organogel/ionogel, cellulose/PVA/polymer, TENG.
06 DOI明细.md: DOI-heavy views separated from the main dashboard to avoid wide tables.

Dataview source path:

FROM "01 文献阅读/00 AI总结笔记"

Use TABLE WITHOUT ID for cleaner tables.

Avoid this pattern for visual dashboards:

TABLE rows.file.link AS 文章
GROUP BY journal

Also avoid the same pattern with other short grouping fields such as year, status, or rating:

TABLE rows.file.link AS 文章, rows.journal AS 期刊
GROUP BY year

These queries create one huge list per table cell. Short columns such as year then waste a large amount of horizontal space while the article list still wraps badly. Prefer a compact count table:

TABLE WITHOUT ID
  key AS 期刊,
  length(rows) AS 篇数
FROM "01 文献阅读/00 AI总结笔记"
WHERE contains(tags, "literature") AND journal
GROUP BY journal
SORT length(rows) DESC, key ASC

For year grouping, use the same compact pattern:

TABLE WITHOUT ID
  key AS 年份,
  length(rows) AS 篇数
FROM "01 文献阅读/00 AI总结笔记"
WHERE contains(tags, "literature") AND year
GROUP BY year
SORT key DESC

Then add a separate one-row-per-paper detail table:

TABLE WITHOUT ID
  file.link AS 文章,
  journal AS 期刊,
  year AS 年份
FROM "01 文献阅读/00 AI总结笔记"
WHERE contains(tags, "literature") AND journal
SORT journal ASC, year DESC, file.name ASC

If the page is already organized by a short field such as year, use that field for sorting but do not repeat it as a wide table column:

TABLE WITHOUT ID
  file.link AS 文章,
  journal AS 期刊
FROM "01 文献阅读/00 AI总结笔记"
WHERE contains(tags, "literature") AND year
SORT year DESC, journal ASC, file.name ASC

Dataview Table Width

Keep main dashboard tables narrow. Put wide fields such as DOI, authors, and file modification times into separate detail pages.

Optional CSS snippet:

.obsidian\snippets\literature-dataview.css

Recommended behavior:

table-layout: fixed
width: 100%
wrap long cell text with overflow-wrap: anywhere
first column about 42%, second about 28%, third about 10%

Enable the snippet in .obsidian/appearance.json with:

"enabledCssSnippets": [
  "literature-dataview"
]

If Obsidian does not pick it up immediately, use Settings > Appearance > CSS snippets > Refresh or restart Obsidian.

Rendering Troubleshooting

If Dataview blocks show as code:

Confirm the Dataview community plugin is installed and enabled.
Switch from editing/live-preview into reading view if needed.
Reopen the note or restart Obsidian.
A real Dataview syntax issue usually shows an error, not a raw code block.

Encoding Caution

Some older generated notes may display mojibake in PowerShell output or Obsidian if the original generation used the wrong encoding. Do not bulk rewrite those notes unless the user asks for text repair. Dataview dashboards should primarily rely on frontmatter fields and file names until encoding is repaired.

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